Matrix Admixed With Synthetic Fiber Patents (Class 525/935)
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Patent number: 6767950Abstract: Pigmented molding compositions having good weatherability for sheet and bulk molded articles are made by mixing a resin component comprising an unsaturated polyester, a monomer which will react with the polyester and a non-aromatic, thermoplastic polymer; an ultraviolet light absorbing material and/or a hindered amine light stabilizing material; a pigment; and a reinforcing agent.Type: GrantFiled: February 6, 2001Date of Patent: July 27, 2004Assignee: AOC, L.L.C.Inventors: Thomas Steinhäusler, Robert M. Walrath, John J. Young, Thomas J. Folda, Mark S. Harber
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Patent number: 6288209Abstract: Polyimide copolymers were obtained containing 1,3-bis(3-aminophenoxy)benzene (APB) and other diamines and dianhydrides and terminating with the appropriate amount of reactive endcapper. The reactive endcappers studied include but should not be limited to 4-phenylethynyl phthalic anhydride (PEPA), 3-aminophenoxy-4′-phenylethynylbenzophenone (3-APEB), maleic anhydride (MA) and nadic anhydride (5-norbornene-2,3-dicarboxylic anhydride, NA). Homopolymers containing only other diamines and dianhydrides which are not processable under conditions described previously can be made processable by incorporating various amounts of APB, depending on the chemical structures of the diamines and dianhydrides used. By simply changing the ratio of APB to the other diamine in the polyimide backbone, a material with a unique combination of solubility, Tg, Tm, melt viscosity, toughness and elevated temperature mechanical properties can be prepared.Type: GrantFiled: September 21, 2000Date of Patent: September 11, 2001Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventor: Brian J. Jensen
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Patent number: 6160039Abstract: This invention relates to a process for the production of masterbatches which contain short fibres or pulps and which may be used for the production of polymer compositions or rubber compositions.Type: GrantFiled: March 1, 1999Date of Patent: December 12, 2000Assignee: Rhein Chemie Rheinau GmbHInventors: Harald Kleinknecht, Andreas Schuch, Iris Degen
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Patent number: 6133401Abstract: Polyimide copolymers were obtained containing 1,3-bis(3-aminophenoxy)benzene (APB) and other diamines and dianhydrides and terminating with the appropriate amount of reactive endcapper. The reactive endcappers studied include but should not be limited to 4-phenylethynyl phthalic anhydride (PEPA), 3-aminophenoxy-4'-phenylethynylbenzophenone (3-APEB), maleic anhydride (MA) and nadic anhydride (5-norbornene-2,3-dicarboxylic anhydride, NA). Homopolymers containing only other diamines and dianhydrides which are not processable under conditions described previously can be made processable by incorporating various amounts of APB, depending on the chemical structures of the diamines and dianhydrides used. By simply changing the ratio of APB to the other diamine in the polyimide backbone, a material with a unique combination of solubility, Tg, Tm, melt viscosity, toughness and elevated temperature mechanical properties can be prepared.Type: GrantFiled: June 29, 1999Date of Patent: October 17, 2000Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space AdministrationInventor: Brian J. Jensen
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Patent number: 5973064Abstract: This invention relates to colored polyester thermoplastics comprised of polymeric colorants having poly(oxyalkylene) moieties and/or anionic dye/quatenary ammonium substantially inorganic salt-free colorant complexes mixed with diluents selected from the group consisting essentially of sorbitan (C.sub.8 -C.sub.22) monoesters, ethoxylated sorbitan (C.sub.8 -C.sub.22) monoesters, mixtures thereof of sorbitan (C.sub.8 -C.sub.22) monoesters and ethoxylated sorbitan (C.sub.8 -C.sub.22) monoesters, ethoxylated nonyl-phenol ethers, ethoxylated dodecylphenol ethers, mixtures thereof of said ethoxylated nonyl-phenol ethers and ethoxylated dodecylphenol ethers, and mixtures of (i) sorbitan (C.sub.8 -C.sub.22) monoesters or ethoxylated sorbitan (C.sub.8 -C.sub.22) monoesters and (ii) ethoxylated nonyl-phenol ethers or ethoxylated dodecylphenol ethers.Type: GrantFiled: July 7, 1998Date of Patent: October 26, 1999Assignee: Miliken Research CorporationInventors: X. Edward Zhao, Todd David Danielson, Eugene Kyle Stephenson, Elizabeth M. Irwin
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Patent number: 5861462Abstract: The present invention relates to a method for forming the LCP composite having LCP fibers dispersed in the matrix resin even if the LCP content may be smaller than the lower limit of the fiber formable range.The method is characterized in that a resin composite reinforced by the LCP fiber in a mixture ratio beyond the fiber formable range or the preferred fiber formable range by means of an extrusion or injection molding of a resin mixture containing a liquid crystal resin composite extruded in the fiber formable range or the preferred fiber formable range.Type: GrantFiled: September 30, 1992Date of Patent: January 19, 1999Assignee: Mazda Motor CorporationInventors: Keita Sasaki, Masatoshi Shinomori
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Patent number: 5811485Abstract: The present invention relates to an adhesive kit comprising two packs and a method of manufacture of an adhesive composition therefrom. The kit comprises, in a first pack a water-continuous polymer emulsion and in a second pack a non-alkali activated inverse emulsion of a high molecular weight water soluble synthetic polymer. The method of manufacture of the adhesive requires mixing for short periods with hand stirring. The adhesive composition formed is particularly, but not exclusively useful as an adhesive for hanging wallpaper.Type: GrantFiled: July 21, 1997Date of Patent: September 22, 1998Assignee: Polycell Products Ltd.Inventors: Ronald Scott Charnock, Derrick Frederick Deamer, James Duncan Holloway
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Patent number: 5708127Abstract: The invention relates to a PMR type resin which comprises a mixture of:(a) nadic acid of Formula (Ia) or a derivative thereof ##STR1## (b) a diaminobisimide of Formula (Ib) ##STR2## (c) an aromatic tetracarboxylic acid of Formula (Ic) or a derivative thereof ##STR3## the components (a), (b) and (c) being present in the approximate molar proportions of 2:n:n-1 respectively.Type: GrantFiled: July 21, 1995Date of Patent: January 13, 1998Assignee: Commonwealth Scientific and Industrial Research OrganisationInventors: Jonathan Howard Hodgkin, Robert Eibl
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Patent number: 5688590Abstract: The invention is directed to a process for preparing SRIM molded article. The process broadly requires the use of a fiber reinforcement mat which is placed inside the mold cavity, and then a polyurethane reaction system is injected into the mold. The system comprising a polyisocyanate and a blend of active hydrogen containing compounds requires aldimines as part of the blend of active hydrogen containing compounds.Type: GrantFiled: August 21, 1995Date of Patent: November 18, 1997Assignee: Bayer CorporationInventors: E. Haakan Jonsson, Kristen L. Parks, Harald Pielartzik, Philip E. Yeske, Douglas A. Wicks
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Patent number: 5688583Abstract: There are disclosed an adhesive obtained by dispersing a cured amino resin fine powder soluble in acid or oxidizing agent into an uncured heat-resistant resin matrix hardly soluble in acid or oxidizing agent when being subjected to a curing treatment as well as a printed circuit board using this adhesive and a method of producing the same. The adhesive has excellent properties such as resistance to chemicals, heat resistance, electric properties, hardness and adhesion property owing to the use of the amino resin fine powder. Therefore, the printed circuit board using such an adhesive is not influenced by service circumstance and is high in the connection reliability without forming short circuit between patterns. Furthermore, in the method of producing the printed circuit board, the adhesive is provided in form of a sheet or a prepreg, whereby the printed circuit board can be produced easily and cheaply.Type: GrantFiled: June 6, 1995Date of Patent: November 18, 1997Assignee: Ibiden Co., Ltd.Inventors: Motoo Asai, Chie Onishi
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Patent number: 5644003Abstract: An epoxy resin composition which comprises: (a) an epoxy resin having at least two epoxy groups in the molecule, (b) an epoxy resin curing agent, (c) a cure accelerator, (d) an aromatic polyamide pulp and (e) an inorganic filler as the essential components, the aromatic polyamide pulp (d) being contained in an amount of 0.5 to 10% by weight based on the total weight of the component (a), the component (b) and the component (d), and the inorganic filler (e) being contained in an amount of 75 to 94% by weight based on the total weight of the component (a), the component (b), the component (c) and the component (e), and a semiconductor device sealed with the above epoxy resin composition. The cured product of the epoxy resin composition is good in balance of hot impact strength and hot flexural strength and hence, the semiconductor device sealed with the epoxy resin composition is excellent in soldering resistance.Type: GrantFiled: July 18, 1995Date of Patent: July 1, 1997Assignee: Sumitomo Chemical Company, Ltd.Inventors: Noriyuki Arai, Yutaka Shiomi, Hiroshi Nakamura, Noriaki Saito
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Patent number: 5629080Abstract: Thermobondable fiber of at least one first component of polypropylene having a melt flow rate of 0.5-30, and at least one second component of polypropylene having a melt flow rate of 60-1000.Type: GrantFiled: January 13, 1993Date of Patent: May 13, 1997Assignee: Hercules IncorporatedInventors: Rakesh K. Gupta, James E. Mallory, Kunihiko Takeuchi
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Patent number: 5614600Abstract: A fiber-reinforced resin plate comprising a fibrous base material and a matrix bonding the fibers contained in the fibrous base material, the matrix being formed by curing a resin composition comprising a highly reactive modified phenolic resin (A) prepared by polycondensing a petroleum heavy oil or pitch, a formaldehyde polymer and a phenol in the presence of an acid catalyst to thereby prepare a modified phenolic resin and-reacting the resultant modified phenolic resin with a phenol in the presence of an acid catalyst to thereby lower the molecular weight of the modified phenolic resin, and an epoxy resin (B). Also, a prepreg and a process for producing the fiber-reinforced resin plate.Type: GrantFiled: March 15, 1995Date of Patent: March 25, 1997Assignee: Kashima Oil Co., Ltd.Inventors: Masahiro Tsumura, Hiromi Miyasita, Kaneyoshi Oyama
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Patent number: 5612424Abstract: A fiber-reinforced resin composition, which comprises:an epoxy resin having at least two epoxy groups in the molecule,a polymerizable unsaturated group-containing epoxy compound of the following general formula [I], ##STR1## wherein R.sup.1 is H or CH.sub.3, R.sup.2 is an alkylene group having 1 to 20 carbon atoms, and n is an integer of 0 to 20,a liquid carboxylic acid anhydride containing a monofunctional carboxylic acid anhydride and/or a polyfunctional carboxylic acid anhydride obtained by reacting a lower aliphatic polyhydric alcohol with a trimellitic acid or a derivative thereof,a curing promoter,a radical polymerization initiator, anda fiber,the glass transition temperature (Tg, .degree.C.) and breaking strain (E, %) of a cured product of said composition satisfying the following formulae:Tg.gtoreq.-17E+240E.gtoreq.4, andTg.gtoreq.125.Type: GrantFiled: August 18, 1994Date of Patent: March 18, 1997Assignee: Mitsubishi Chemical Industries, Ltd.Inventors: Shoichi Sato, Tohru Imanara, Takao Uematsu
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Patent number: 5591279Abstract: A pneumatic tire having a tread composed of a matrix rubber, a low hardness rubber powder, hollow particulates, and short fibers, and optionally a liquid polymer, wherein the low hardness rubber powder has an average particle size of less than 1000 .mu.m, including or not including no more than 20 parts by weight of carbon per 100 parts by weight of the rubber component in the low hardness rubber powder, and is contained in an amount of 1 to 10 parts by weight per 100 parts by weight of the matrix rubber, the hollow particulates have an average particle size of 10 to 120 .mu.m and an average thickness of 0.1 to 15 .mu.m, and the short fibers have an aspect ratio (ratio of length/diameter) of 10 to 1000.Type: GrantFiled: May 19, 1994Date of Patent: January 7, 1997Assignee: The Yokohama Rubber Co., Ltd.Inventors: Shingo Midorikawa, Masaaki Harada, Takanori Kondoh
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Patent number: 5543441Abstract: Collagen, particularly atelopeptide collagen, exhibits improved handling characteristics when chemically conjugated and/or crosslinked with a synthetic hydrophilic polymer.Type: GrantFiled: April 24, 1995Date of Patent: August 6, 1996Assignee: Collagen CorporationInventors: Woonza Rhee, Donald G. Wallace, Alan S. Michaels, Ramon A. Burns, Jr., Louis Fries, Frank DeLustro, Hanne Bentz
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Patent number: 5541238Abstract: Disclosed is a fiber of an organic, inorganic or metallic material or a simple substance wherein ultrafines of an inorganic or metallic material or a simple substance having an average particle diameter of 0.005-1 .mu.m are uniformly dispersed and deposited on 8-90% of the surface in a single layer. The fiber is produced by exposing a fiber of an organic, inorganic or metallic material or a simple substance to a gaseous stream forming ultrafines of an inorganic or metallic material or a simple substance by a vapor phase process, thereby contacting said ultrafines in the gaseous stream with said fiber in a state wherein the ultrafines are still active. The treated fiber is useful as a reinforcing material for a fiber reinforced composite.Type: GrantFiled: October 8, 1993Date of Patent: July 30, 1996Assignees: Nisshin Flour Milling Co., Ltd., Kaoru Umeya, Ryobi LimitedInventors: Yukiyoshi Yamada, Tadashi Fuyuki, Eisuke Kuroda, Satoshi Akiyama, Naoto Tonoike, Kaoru Umeya, Kazunobu Ogawa, Kazuya Miyazaki, Hitoshi Nagasaka
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Patent number: 5464902Abstract: Relatively brittle epoxy resin systems which may be employed as structural film adhesives and matrix resins for fiber-reinforced prepregs are toughened against impact-induced damage by the addition of minor quantities of functionalized elastomer particles having a glass transition temperature of less than 10.degree. C.Type: GrantFiled: February 4, 1994Date of Patent: November 7, 1995Assignee: Cytec Technology Corp.Inventor: Hans G. Recker
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Patent number: 5443775Abstract: A process for preparing a pigmented thermoplastic polymer composition which is useful as a low profile additive composition for thermosetting resins comprises the steps of(A) selecting at least one thermoplastic polymer having a refractive index which is within about 0.06 units of the refractive index of the thermosetting resin;(B) preparing a mixture of said thermoplastic polymer and at least one color pigment, dye or mixture thereof under high shear in a high-intensity mixer; and(C) forming a slurry comprising said mixture obtained in step (B) in at least one liquid copolymerizable monomer containing at least one CH.sub.2 .dbd.C< group. In a preferred embodiment, at least one surfactant is included in the slurry obtained in step (C) in an amount sufficient to enhance the uniformity of the pigmentation of a cured composite produced from the thermosetting resin composition and a low profile additive composition.Type: GrantFiled: May 10, 1993Date of Patent: August 22, 1995Assignee: Plasticolors, Inc.Inventor: Selby M. Brannon
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Patent number: 5439986Abstract: A thermo-curable resin composition which contains (a) an aromatic polyamide oligomer having polymerizable unsaturated group(s) at both terminals or within side chain(s), (b) a maleimide compound and (c) an epoxy resin; and a copper foil laminate which comprises impregnating said composition into substrates, followed by bonding by co-pressing copper foils is provided. The copper-clad laminate of the present invention has excellent adhesiveness to copper foil, heat resistance and electrical properties.Type: GrantFiled: November 16, 1993Date of Patent: August 8, 1995Assignee: Showa Highpolymer Co., Ltd.Inventors: Tadayuki Hosogane, Hiroshi Nakajima, Eiichiro Takiyama
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Patent number: 5434226Abstract: Thermosetting resin systems exhibiting improved performance characteristics when utilized in composite product applications, said resin systems being modified with a polyarylsulfidesulfone dispersed therein and with a polyethersulfone dissolved therein.Type: GrantFiled: January 28, 1994Date of Patent: July 18, 1995Assignee: Ciba-Geigy CorporationInventors: Ly D. Nguyen, Matthew A. Lowry, Deborah L. Stone, Julie A. Underwood
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Patent number: 5397610Abstract: A plastic molding produced by molding a resin composition comprising 98 to 50 parts by weight of a thermoplastic polyester resin (A) and 2 to 50 parts by weight of a resin (B) incompatible with the thermoplastic polyester resin (A), the resin (B) being dispersed in the resin (A), wherein the resin (B) has in a layer that is situated at an arbitrary depth from the outer surface of the plastic molding a substantially rodlike form satisfying the requirement represented by the following formulae (1) and (2) and is oriented in parallel to the outer surface of the plastic molding and in the direction of flow of the resin composition in molding:1.ltoreq.P/Q.ltoreq.10 (1)(P+Q)/L.ltoreq.0.5 (2)wherein L, P and Q represent the size of the particle of said resin (B) and respectively have the following values:L: the average length (.mu.m) in the direction of stretching of the particle;P: the average major axis (.mu.Type: GrantFiled: January 29, 1993Date of Patent: March 14, 1995Assignee: Kao CorporationInventors: Shingo Odajima, Shoji Ohtani, Tetsuhiro Osawa, Masanori Takita, Yukihiro Nakano
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Epoxy resin composition containing a polyaminoamide and a latent curing agent for fiber impregnation
Patent number: 5350826Abstract: An epoxy resin composition for forming prepregs is disclosed which includes an epoxy resin having at least two epoxy groups, a latent curing agent for the epoxy resin in an amount of 0.5-3.0 equivalents per equivalent of the epoxy groups of the epoxy resin, and a reactive, viscosity-increasing agent in an amount of 0.2-3.0 parts by weight per 100 parts by weight of the epoxy resin. The epoxy resin composition has an initial viscosity n.sub.I(50) at 50.degree. C. of 1,000-200,000 cP and an initial viscosity n.sub.I(23) at 23.degree. C. of at least 10,000 cP.Type: GrantFiled: November 27, 1992Date of Patent: September 27, 1994Assignee: Tonen CorporationInventors: Osamu Watanabe, Makoto Takezawa -
Patent number: 5326516Abstract: This invention relates to a process for preparing a pigmented thermoplastic polymer composition which is useful as a low profile additive composition for thermosetting resins. The process includes the steps of(A) selecting at least on thermoplastic polymer having a refractive index which is within about 0.06 units of the refractive index of the thermosetting resin;(B) preparing a mixture of said thermoplastic polymer and at least one color pigment, dye or mixture thereof under high shear in a high-intensity mixer; and(C) forming a slurry containing said mixture obtained in step (B) in at least one liquid copolymerizable monomer containing at least one CH.sub.2 .dbd.C<group. In a preferred embodiment, at least one surfactant is included in the slurry obtained in step (C) in an amount sufficient to enhance the uniformity of the pigmentation of a cured composite produced from the thermosetting resin composition and a low profile additive composition.Type: GrantFiled: May 10, 1993Date of Patent: July 5, 1994Assignee: Plasticolors, Inc.Inventor: Selby M. Brannon
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Patent number: 5283289Abstract: A fiber-reinforced rubber composition capable of providing a vulcanizate having an excellent strength and modulus and a production process thereof. This fiber-reinforced rubber composition includes fine short fibers of thermoplastic polymer having ##STR1## groups buried in vulcanizable rubber. The vulcanizable rubber and the thermoplastic polymer are grafted to each other through a resol type alkylphenol formaldehyde resin precondensate or a novolak type phenol formaldehyde resin precondensate at an interface of the fiber. The ratio of the fiber to the vulcanizable rubber (A) 1 to 70 parts by weight based on 100 parts by weight of the rubber in the case of the resol type alkylphenol formaldehyde resin precondensate or (B) 1 to 100 parts by weight based on 100 parts by weight of the rubber in the case of the novolak type phenol formaldehyde resin precondensate.Type: GrantFiled: June 19, 1991Date of Patent: February 1, 1994Assignee: UBE Industries, Ltd.Inventors: Shinji Yamamoto, Kouhei Kaijiri, Kouichi Nagakura, Denichi Oda, Yasuo Matsumori, Kimio Nakayama
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Patent number: 5242993Abstract: A method for the melt reaction of polyesters, particularly polyethylene terephthalate, with an alkylacetylacetonate endcapping agent which reacts with terminal carboxyl groups of the polyester to produce polyesters having reduced acidity and PET products produced by the method having reduced acid content.Type: GrantFiled: February 4, 1991Date of Patent: September 7, 1993Assignee: Bridgestone/Firestone, Inc.Inventors: William L. Hergenrother, John M. Donshak
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Patent number: 5240773Abstract: A fabric reinforced thermoplastic composite which is reformable at a temperature less than about 100.degree. C. The thermoplastic comprises about 70 to 95% by weight of polyvinyl chloride and about 5 to 30% by weight of a halogenated polyvinyl chloride. The composite is used for forming orthotics and prosthesis devices.Type: GrantFiled: January 13, 1992Date of Patent: August 31, 1993Assignee: Mutual Industries, Inc.Inventor: Edmund M. Dunn
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Patent number: 5094797Abstract: Pigmented curable polyester molding compounds which cure to give homogeneously colored moldings contain an unsaturated polyester, copolymerizable monomers, a thermoplastic polymer and a color pigment and are prepared by dispersing the pigment in the molten thermoplastic in an extruder.Type: GrantFiled: September 26, 1990Date of Patent: March 10, 1992Assignee: BASF AktiengesellschaftInventors: Helmut Heel, Jan Holoch, Gerd Esswein, Friedrich Goffing
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Patent number: 5055342Abstract: Fluorinated polymeric composition exhibiting low dielectric constant and a low coefficient of thermal expansion containing a fluorinated polymeric material and a silica and/or quartz filler having a mean particle size of no greater than 7 microns, and use thereof to form a substrate having vias therein. Layers of the above composition are obtained by applying the composition to a substrate and then heating the composition to a temperature sufficient to cause the composition to fuse.Type: GrantFiled: February 16, 1990Date of Patent: October 8, 1991Assignee: International Business Machines CorporationInventors: Voya Markovich, Ashit Mehta, Jae M. Park, Eugene Skarvinko, David W. Wang
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Patent number: 5047453Abstract: Fibrous material, in particular shoddy from synthetic fiber wastes, can be compacted into thermally and acoustically insulating boards and moldings by mixing with a pulverulent adhesive comprising a hot-melt adhesive and a solid epoxy resin/curing agent system and heating the mixture under pressure in a mold to a temperature at which the hot-melt adhesive becomes liquid and the epoxy resin reacts with its curing agent.Type: GrantFiled: May 3, 1985Date of Patent: September 10, 1991Assignee: Hoechst AktiengesellschaftInventors: Walter Vost, Heinz Schmelzer
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Patent number: 5043388Abstract: A fiber-reinforced rubber composition capable of providing a vulcanizate having an excellent strength and modulus and a production process thereof. This fiber-reinforced rubber composition includes fine short fibers of thermoplastic polymer having ##STR1## groups buried in vulcanizable rubber. The vulcanizable rubber and the thermoplastic polymer are grafted to each other through a resol type alkylphenol formaldehyde resin precondensate or a novolak type phenol formaldehyde resin precondensate at an interface of the fiber. The ratio of the fiber to the vulcanizable rubber (A) 1 to 70 parts by weight based on 100 parts by weight of the rubber in the case of the resol type alkylphenol formaldehyde resin precondensate or (B) 1 to 100 parts by weight based on 100 parts by weight of the rubber in the case of the novolak type phenol formaldehyde resin precondensate.Type: GrantFiled: May 4, 1987Date of Patent: August 27, 1991Assignee: UBE Industries, Inc.Inventors: Shinji Yamamoto, Kouhei Kaijiri, Kouichi Nagakura, Denichi Oda, Yasuo Matsumori, Kimio Nakayama
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Patent number: 4703086Abstract: A fiber-reinforced rubber composition capable of providing a vulcanizate having an excellent strength and modulus and a production process thereof. This fiber-reinforced rubber composition includes fine short fibers of thermoplastic polymer having ##STR1## groups buried in vulcanizable rubber. The vulcanizable rubber and the thermoplastic polymer are grafted to each other through a resol type alkylphenol formaldehyde resin precondensate or a novolak type phenol formaldehyde resin precondensate at an interface of the fiber. The ratio of the fiber to the vulcanizable rubber (A) 1 to 70 parts by weight based on 100 parts by weight of the rubber in the case of the resol type alkylphenol formaldehyde resin precondensate or (B) 1 to 100 parts by weight based on 100 parts by weight of the rubber in the case of the novolak type phenol formaldehyde resin precondensate.Type: GrantFiled: October 21, 1985Date of Patent: October 27, 1987Assignee: UBE Industries, Ltd.Inventors: Shinji Yamamoto, Kouhei Kaijiri, Kouichi Nagakura, Denichi Oda, Yasuo Matsumori, Kimio Nakayama
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Patent number: 4612241Abstract: A composite consisting essentially of a polymer matrix and thermoplastic elastomeric fibers is disclosed. During preparation, elastomeric fibers are embedded in polymer or polymer precursor under from about 0 tension to tension only sufficient to eliminate slack and develop tension as the composite is formed. The composite is impact resistant and capable of elongation.Type: GrantFiled: June 12, 1985Date of Patent: September 16, 1986Assignee: E. I. Du Pont de Nemours and CompanyInventor: Edward G. Howard, Jr.
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Patent number: 4574108Abstract: Fibers and plastic materials reinforced with these fibers which have a diameter that varies along the fiber axis are provided. The fibers increase the strength of the material by reducing fiber pull out from the plastic matrix. The variation in diameter results in an undulating surface on the fiber which locks it into the matrix.Type: GrantFiled: May 2, 1985Date of Patent: March 4, 1986Assignee: University of DelawareInventors: Stoyko C. Fakirov, Jerold M. Schultz
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Patent number: 4546128Abstract: The present invention provides composite material compositions using waste synthetic fiber released from fiber-related factories or general households. In an embodiment of the present invention, a thermoplastic synthetic resin may be incorporated with plasticizer(s), lubricant(s), and other additive(s), the mixture being molten and then kneaded with waste synthetic fiber which had been fibrillated into filaments, whereby said waste synthetic fiber is impregnated with the molten resin liquid to form a composite material composition. The present invention can thus provide inexpensive composite material compositions having excellent mechanical properties by making use of waste synthetic fiber which has been junked as waste so far, and lessening the rate of use of synthetic resins.Type: GrantFiled: May 9, 1984Date of Patent: October 8, 1985Assignee: Kabushiki Kaisha Mikuni SeisakushoInventor: Yoshikazu Nakajima
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Patent number: 4439561Abstract: Disclosed is a composition for stopping leaks which comprises the combination of a fibrillated fiber and a particulate material, such as a seed meal, in a suspension in a liquid medium. A preferred fibrillated fiber comprises the polymer, poly(imino-1,4-phenyleneiminoterephthaloyl).Type: GrantFiled: March 24, 1982Date of Patent: March 27, 1984Assignee: Union Carbide CorporationInventor: Alan G. Barber
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Patent number: 4309473Abstract: A strand prepreg which comprises (i) a resin composition comprising 100 parts by weight of thermosetting resin having a softening point of 60.degree. C. or less and about 5 to 60 parts by weight of epoxy resin having a number average molecular weight of 5,000 or more and (ii) about 20 to 80% by volume strands of carbon fibers, glass fibers, aromatic polyamide fibers and the like, wherein the strands are impregnated with the resin composition.Type: GrantFiled: December 5, 1979Date of Patent: January 5, 1982Assignee: Toho Beslon Co., Ltd.Inventors: Tsuyoshi Minamisawa, Keitsugu Nohara
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Patent number: 4263184Abstract: A homogeneous predispersed fiber composition useful for dispersing a fibrous material in a rubber or plastic compound stock, said composition comprising a fibrous material and a rubber or plastic polymer binder, wherein said composition is prepared by mixing a latex of the rubber or plastic polymer with the fibrous material to form a wetted fiber mixture, mixing a coagulant with the wetted fiber mixture thereby forming the predispersed fiber composition, wherein the total amount of water present in the wetted fiber mixture prior to coagulation is substantially equal to that required to completely wet the fibrous material by either capillary action, surface adsorption or a combination thereof.Type: GrantFiled: January 5, 1977Date of Patent: April 21, 1981Assignee: Wyrough and Loser, Inc.Inventors: Thomas J. Leo, Anders H. Johansson
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Patent number: RE32692Abstract: The present invention provides composite material compositions using waste synthetic fiber released from fiber-related factories or general households. In an embodiment of the present invention, a thermoplastic synthetic resin may be incorporated with plasticizer(s), lubricant(s), and other additive(s), the mixture being molten and then kneaded with waste synthetic fiber which had been fibrillated into filaments, whereby said waste synthetic fiber is impregnated with the molten resin liquid to form a composite material composition. The present invention can thus provide inexpensive composite material compositions having excellent mechanical properties by making use of waste synthetic fiber which has been junked as waste so far, and lessening the rate of use of synthetic resins.Type: GrantFiled: September 8, 1986Date of Patent: June 7, 1988Assignee: Kabushiki Kaisha Mikuni SeisakushoInventor: Yoshikazu Nakajima