Fluorine Reactant Contains Atoms Other Than C, H, Or Hal Patents (Class 525/200)
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Patent number: 5567770Abstract: This invention relates to liquid crystalline polymers, having a glass transition temperature of greater than 140.degree. C., blended with tetrafluoroethylene polymers, said blends having improved wear properties.Type: GrantFiled: May 17, 1994Date of Patent: October 22, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventor: Robert R. Luise
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Patent number: 5560986Abstract: A composite of a thermoplastic copolymer of tetrafluoroethylene and perfluoro(propyl vinyl ether), and a porous membrane of polytetrafluoroethylene, at least a portion of the thermoplastic copolymer being dispersed within the pores of the porous polytetrafluoroethylene. The composite is useful as insulation for wire and cable.Type: GrantFiled: May 31, 1994Date of Patent: October 1, 1996Assignee: W. L. Gore & Associates, Inc.Inventor: William P. Mortimer, Jr.
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Patent number: 5552199Abstract: This invention provides a melt-processable conductive fluoroplastic composition comprising a melt-processable, thermoplastic fluoropolymer component of interpolymerized units comprising those derived from vinylidene fluoride, a conductive particulate component comprising conductive carbon black particles, and a hydrocarbon polymer component. The composition is useful for making, for example by melt-processing, conductive shaped articles including tubing.Type: GrantFiled: September 2, 1994Date of Patent: September 3, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Thomas J. Blong, Claude Lavall ee
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Patent number: 5549948Abstract: This invention provides a melt-processable fluoroplastic composition comprising a blend of a melt-processable thermoplastic fluoropolymer component of interpolymerized units derived from vinylidene fluoride and an ethylenically-unsaturated, copolymerizable, fluorinated comonomer, and a hydrocarbon polymer component comprising a poller of ethylene or propylene. The composition is useful for making shaped articles including tubing or film.Type: GrantFiled: September 2, 1994Date of Patent: August 27, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventors: Thomas J. Blong, Claude Lavall ee
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Patent number: 5548028Abstract: Blends of previously-vulcanized fluoroelastomer with fluorine-free elastomer can be cured to have unexpectedly excellent physical properties.Type: GrantFiled: February 24, 1995Date of Patent: August 20, 1996Assignee: E. I. Du Pont de Nemours and CompanyInventor: David L. Tabb
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Patent number: 5540997Abstract: An alignment layer for a liquid crystal display device is described. The alignment layer comprises a copolymer of a thermoset polymer containing perfluorinated cyclobutane rings and a thermoplastic polymer containing perfluorinated cylcobutane rings, or a blend of thermoset and thermoplastic homopolymers or copolymers containing perfluorinated cyclobutane rings.This copolymer or blend provides an alignment layer with a cure temperature of less than 250.degree. C., a low dielectric, and a low moisture content. The resultant alignment layer can also provide surface tilt angles suitable for supertwisted nematic-liquid crystal displays.Type: GrantFiled: March 13, 1995Date of Patent: July 30, 1996Assignee: The Dow Chemical CompanyInventors: Donald J. Perettie, Benjamin M. DeKoven, David A. Babb
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Patent number: 5525673Abstract: Disclosed are:1) a three-component resin composition comprising a hydroxyl group-containing compound (A), an epoxy group-containing compound (B) and a silane group-containing compound (C);2) a two-component resin composition comprising a hydroxyl group-containing compound (A) and silane group- and epoxy group-containing compound (D);3) a two-component resin composition comprising hydroxyl group- and silane group-containing compound (E) and epoxy group-containing compound (B); and4) two-component resin composition comprising hydroxyl group- and epoxy group-containing compound (F) and silane group-containing compound (C); wherein at least one of the components in each of the resin compositions 1) to 4) is (are) fluorine-containing resin;5) a curable composition comprising one of the resin compositions 1) to 4) and a metal chelate compound as curing catalyst; and6) coating compositions comprising such curing composition and when required a pigment.Type: GrantFiled: July 18, 1994Date of Patent: June 11, 1996Assignee: Kansai Paint Company, LimitedInventors: Akimasa Nakahata, Nobushige Numa, Masahiro Yamane, Osamu Isozaki, Noboru Nakai
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Patent number: 5516578Abstract: The invention relates to a water and oil repellency imparting composition which comprises:(a) a fluoroaliphatic radical-containing agent; and(b) a polymer comprising cyclic carboxylic anhydride groups.Additionally, the composition may comprise:(c) a softener and/or a plasticizer. The composition provides water and oil repellent properties to fibrous and other substrates treated therewith and it shows high compatibility with the commonly used softeners.Type: GrantFiled: October 14, 1994Date of Patent: May 14, 1996Assignee: Minnesota Mining and Manufacturing CompanyInventor: Dirk M. Coppens
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Patent number: 5502097Abstract: A fluororesin powder liquid dispersion comprising heat-flowable fluororesin powder, liquid dispersion medium having a surface tension of not more than 45 dyne/cm, and organic liquid with a boiling point of 150.degree.-340.degree. C. provides thick film fluororesin treatment by a single application.Type: GrantFiled: May 26, 1994Date of Patent: March 26, 1996Assignee: DuPont-Mitsui Fluorochemicals Co., Ltd.Inventor: Takumi Saito
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Patent number: 5473018Abstract: A tetrafluoroethylene/fluoroalkoxy trifluoroethylene copolymer (PFA) composition which has finer spherulite diameters compared to a conventional PFA is provided, so as to give fabricated articles having excellent surface smoothness, and which are free from problems, such as process contamination and the like, caused by leaching. This effect is obtained by incorporating into the composition prior to fabrication a polytetrafluoroethylene having a crystallization temperature of at least 305.degree. C. and a heat of crystallization of at least 50 J/g.Type: GrantFiled: June 22, 1994Date of Patent: December 5, 1995Assignee: DuPont-Mitsui Fluorochemicals Co., Ltd.Inventors: Shinichi Namura, Takao Nishio
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Patent number: 5468782Abstract: Novel compositions containing an ECTFE polymer and PTFE particles dispersed therein, and insulated wires and cables, especially local area network (LAN) cables in which the conductors are covered by foamed insulation made from such compositions.Type: GrantFiled: February 18, 1995Date of Patent: November 21, 1995Assignee: Raychem CorporationInventor: Ashok Mehan
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Patent number: 5464904Abstract: Copolymers of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP) having high HFP content and end-of-melting temperature, T.sub.m (end), as low as 200.degree. C. are disclosed. Exceptional performance as a processing aid in polyolefins results from having T.sub.m (end) of the TFE/HFP copolymer close to the processing temperature of the polyolefin. These TFE/HFP copolymers are soluble in fluorinated cyclic solvents. Copolymer/solvent systems copolymer at significant concentrations in selected solvents are fluid and stable at room temperature.Type: GrantFiled: November 16, 1994Date of Patent: November 7, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventors: George R. Chapman, Jr., Lewis E. Crenshaw, Rita S. McMinn, Richard A. Morgan, Donnan E. Priester, Charles W. Stewart, Robert E. Tarney
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Patent number: 5461107Abstract: An elastomeric composition having improved resistance to chemical attack is provided, the elastomeric composition including a perfluoroelastomer and a non-fibrillating particulate fluorographite. Also, a process for improving the processibility and resistance to chemical attack of a perfluoroelastomer is provided, in which the perfluoroelastomer is mixed with a non-fibrillating fluorocarbon particulate polymer to form a elastomeric composition which is processed at a temperature less than the melting temperature of the non-fibrillating fluorocarbon particulate polymer to disperse the fluorocarbon polymer throughout the perfluoroelastomer while maintaining the fluorocarbon polymer in particulate form. A method of making a seal which is resistant to chemical attack for preventing the leakage of a fluid between a first member and a second member is also provided.Type: GrantFiled: September 14, 1994Date of Patent: October 24, 1995Assignee: Greene, Tweed & Co.Inventors: Harshad P. Amin, Carl A. Aufdermarsh
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Patent number: 5459202Abstract: Seals capable of containing corrosive liquid and/or vapor of, e.g., HCFCs, are made of cured blends of (a) CTFE/VF.sub.2 elastomer, (b) chlorine-free fluoroelastomer, and (c) 1 to 20 wt % of hydrocarbon polymer, based on the combined weight of (a) and (b). The blends are homogeneous and coherent wherein the hydrocarbon polymer is not visible at 165.times. magnification as a separate phase within the matrix of the blend of (a) and (b) and the blend is free of internal cracks and voids.Type: GrantFiled: June 30, 1994Date of Patent: October 17, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventors: Felix V. Martinez, Nabil F. Boufakhreddine
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Patent number: 5459199Abstract: A graft polymer wherein an iodine-containing fluororubber has been grafted on an ethylene-.alpha.-olefin copolymer or other polymer can be obtained by mixing 30 parts by weight of an iodine-containing fluororubber (a vinylidene fluoride-hexafluoropropylene copolymer containing iodine) and 70 parts by weight of an ethylene-propylene copolymer rubber at 180.degree. C. for 30 minutes while applying shear deformation using a Brabender mixer.Type: GrantFiled: September 21, 1993Date of Patent: October 17, 1995Assignee: Sumitomo Chemical Company, LimitedInventors: Keisaku Yamamoto, Yoshio Tanimoto, Kiyosi Ikeda, Nobuhiro Natsuyama
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Patent number: 5453540Abstract: Fluorochemical compositions comprising fluorinated compounds, wherein the fluorinated compound comprises fluorochemical oligomeric portion, an organic moiety, and a group that can impart soft hand, stain release, water repellency, or a durable property when the compound is applied to a fibrous substrate, wherein the fluorochemical oligomeric portion is bonded to the organic moiety through an isocyanate-derived linking group. Also disclosed are fluorochemical compositions in the form of fluorochemical liquid dispersions and methods for preparing substrates treated with such compositions. Substrates so treated exhibit particularly durable and abrasion-resistant oil and water repellent properties. Intermediates in the preparation of the fluorochemical compositions are also disclosed. Some of the intermediates are useful as emulsifiers in fluorochemical liquid dispersions.Type: GrantFiled: November 29, 1993Date of Patent: September 26, 1995Assignee: Minnesota Mining and Manufacturing CompanyInventors: Rudolf J. Dams, Johan E. De Witte
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Patent number: 5451440Abstract: A laminate comprising a substrate, a continuous layer of a release coating on one surface thereof, and a layer of a silicone pressure sensitive adhesive on the surface of said release coating, said release coating being a mixture of a resin having perfluoro side chains and a film forming resin which binds said resin having said perfluoro side chains to said substrate, wherein said film forming resin is selected from the group consisting of polyester, polyamides, functionalized polyolefins, and nitrile polymers and copolymers.Type: GrantFiled: July 30, 1993Date of Patent: September 19, 1995Assignee: American Tape Co.Inventor: John K. Tynan, Jr.
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Patent number: 5430103Abstract: The present invention provides a crosslinkable composition which comprises an internally crosslinked acrylic elastomer which is crosslinkable with a peroxide, a fluoroelastomer and a crosslinking agent for at least one of the elastomers.A crosslinkable composition of the present invention can afford a molding which are excellent in physical properties such as mechanical strength and compression set, heat resistance and workability.Type: GrantFiled: December 7, 1993Date of Patent: July 4, 1995Assignees: Daikin Industries, Ltd., Nissin Chemical Industry Co., Ltd.Inventors: Hiroyuki Ohata, Satoshi Terasaki, Etsuo Minamino, Masayasu Tomoda, Yoshihiro Shirai, Tsuyoshi Noguchi, Kazuhisa Matsumoto
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Patent number: 5428108Abstract: The present block copolymer contains a structural unit (A) derived from a compound represented by the general formula (I): CH.sub.2 .dbd.CR.sub.1 COOR.sub.2 R.sub.f, and also contains a structural unit (B) consisting of a polymer moiety represented by at least one of the structural formulae (III) and (IV) and another polymer moiety derived from a compound represented by the general formula (II): CH.sub.2 .dbd.CR.sub.3 R.sub.4. For preparing the above block copolymer, a block copolymer consisting of the structural unit (A) derived from a compound represented by the general formula (I): CH.sub.2 .dbd.CR.sub.1 COOR.sub.2 R.sub.f and the structural unit (B1) derived from a compound represented by the general formula (II): CH.sub.2 .dbd.CR.sub.3 R.sub.4 and a compound represented by the general formula (V): CH.dbd.CR.sub.6 COO(R.sub.9).sub.t H are reacted with a compound represented by the general formula (VI): R.sub.10 COCl to allow a dehydrochlorination reaction to take place.Type: GrantFiled: February 3, 1994Date of Patent: June 27, 1995Assignee: Nippon Oil & Fats Co., Ltd.Inventors: Yoshihiro Oshibe, Michihisa Yamada, Hisao Yamamoto, Hiroshi Ohmura
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Patent number: 5412034Abstract: Curable elastomeric blends of fluoroelastomer and hydrocarbon elastomer in which at least one of the fluoroelastomer and hydrocarbon elastomer contains a cure site monomer.Type: GrantFiled: October 26, 1993Date of Patent: May 2, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventor: David L. Tabb
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Patent number: 5408001Abstract: Disclosed are:1) a three-component resin composition comprising a hydroxyl group-containing compound (A), an epoxy group-containing compound (B) and a silane group-containing compound (C);2) a two-component resin composition comprising a hydroxyl group-containing compound (A) and silane group- and epoxy group-containing compound (D);3) a two-component resin composition comprising hydroxyl group- and silane group-containing compound (E) and epoxy group-containing compound (B); and4) two-component resin composition comprising hydroxyl group- and epoxy group-containing compound (F) and silane group-containing compound (C); wherein at least one of the components in each of the resin compositions 1) to 4) is (are) fluorine-containing resin;5) a curable composition comprising one of the resin compositions 1) to 4) and a metal chelate compound as curing catalyst; and6) coating compositions comprising such curing composition and when required a pigment.Type: GrantFiled: August 18, 1993Date of Patent: April 18, 1995Assignee: Kansai Paint Company, LimitedInventors: Akimasa Nakahata, Nobushige Numa, Masahiro Yamane, Osamu Isozaki, Noboru Nakai
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Patent number: 5387646Abstract: The invention provides:1) a fluorine-containing resin composition including:a) a fluorine-containing resin having (i) a hydrolyzable group attached directly to a silicon atom and/or a silanol group and (ii) an epoxy group in the molecule, orb) a mixture of a component (I) having a hydrolyzable group attached directly to a silicon atom and/or a silanol group and a component (II) having an epoxy group, such that at least one of the components (I) and (II) is a fluorine-containing resin;2) a curable composition including the resin composition and a metal chelate compound; and3) a coating composition including this resin composition or this curable composition.Type: GrantFiled: April 7, 1993Date of Patent: February 7, 1995Assignee: Kansai Paint Company, LimitedInventors: Akimasa Nakahata, Nobushige Numa, Masahiro Yamane, Osamu Isozaki, Noboru Nakai
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Patent number: 5374683Abstract: Copolymers of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP) having high HFP content and end-of-melting temperature, T.sub.m (end), as low as 200.degree. C. are disclosed. These copolymers contain one or more additional fluoromonomers such as perfluoro(alkyl vinyl)ether. These TFE/HFP copolymers are soluble in fluorinated cyclic solvents.Type: GrantFiled: November 23, 1993Date of Patent: December 20, 1994Assignee: E. I. Du Pont de Nemours and CompanyInventor: Richard A. Morgan
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Patent number: 5354811Abstract: A fluorine-containing thermoplastic elastomer composition comprising a continuous phase of at least one melt-formable thermoplastic fluorocarbon resin and a disperse phase of vulcanizate of a fluorine-containing elastomer having vulcanizable sites selected from the group consisting of epoxy groups, carboxylic acid groups, carboxylic acid derivative groups, sulfonic acid groups and sulfonic acid derivative groups, wherein the disperse phase is from 50 to 90% by weight based on the total amount of the continuous phase and the disperse phase.Type: GrantFiled: November 18, 1992Date of Patent: October 11, 1994Assignee: Asahi Glass Company Ltd.Inventors: Hiroki Kamiya, Masayuki Saito
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Patent number: 5350795Abstract: Fluorochemical compositions for treating textile fibers and fabrics to impart oil and water repellency without thermal treatment are provided. The compositions comprise an aqueous, substantially organic solvent free, solution or dispersion of (a) a fluorochemical acrylate copolymer comprised of a fluorinated acrylate monomer, polyalkylene glycol acrylate or methacrylate, and polyalkylene glycol diacrylate or dimethacrylate; and (b) a polyalkoxylated polyurethane having pendant perfluoroalkyl groups comprised of an aliphatic or aromatic tri- or higher order isocyanate, a fluorinated alcohol, amine, or mercaptan, and a poly(oxyalkylene) diol or dithiol.Type: GrantFiled: July 9, 1993Date of Patent: September 27, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard S. Smith, Frans Audenaert
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Patent number: 5349019Abstract: New copolymers, mixtures thereof with poly(meth)acrylate esters and the use thereof for improving the cold fluidity of crude oils.Copolymers comprising as comonomers therein from 50 to 99.9% by weight of a C.sub.14 -C.sub.22 -alkyl(meth)acrylate and 50 to 0.1% by weight of a comonomer derived from a compound comprising a single polymerizable C.dbd.C group and these copolymers or their mixture with C.sub.14 -C.sub.22 -alkyl poly(meth)acrylates having enhanced pour point depressant properties.Type: GrantFiled: September 2, 1993Date of Patent: September 20, 1994Assignee: HoechstInventors: Herbert Wirtz, Sigmar-Peter von Halasz, Michael Feustel, Juliane Balzer
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Patent number: 5322899Abstract: Adhesion of fluoropolymer capstock layer to thermoplastic substrates such as polyvinyl chloride is achieved without the need for an intermediate adhesive layer while maintaining adequate impact resistance and processing properties by blending with the fluoropolymer a selected combination of acrylic polymers. The fluoropolymer-acrylic polymer blend includes a first acrylic polymer having a major methyl methacrylate monomeric component and a second acrylic polymer having a major ethyl methacrylate component.Type: GrantFiled: July 21, 1992Date of Patent: June 21, 1994Assignee: PPG Industries, Inc.Inventors: John F. Grunewalder, Mark A. Harley
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Patent number: 5317061Abstract: A composition which contains 35 to 85% by weight of a copolymer of tetrafluoroethylene and hexafluoropropylene (FEP), 10 to 60% by weight of a copolymer of tetrafluoroethylene and perfluoropropylvinyl ether (PFA), and 5 to 60% by weight of melt-processable polytetrafluoroethylene (PTFE). The composition is particularly suitable for use as an insulating material on a substrate such as a resistive element in a conductive polymer heating cable. The composition has good physical properties, low creep, and low secondary crystallization, and exhibits little stress-cracking when exposed to elevated temperatures.Type: GrantFiled: February 24, 1993Date of Patent: May 31, 1994Assignee: Raychem CorporationInventors: Edward F. Chu, Vijay Reddy, Robert P. Saltman
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Patent number: 5292796Abstract: Fluorochemical compositions comprising fluorinated compounds, wherein the fluorinated compound comprises fluorochemical oligomeric portion bonded through --O--, --S--, --NH--, or CO.sub.2 -- to a moiety comprising a group derived from an amino resin. Also disclosed are fluorochemical compositions in the form of fluorochemical liquid dispersions and methods for preparing substrates treated with such compositions. Substrates so treated exhibit particularly durable and abrasion-resistant oil and water repellent properties.Type: GrantFiled: April 2, 1991Date of Patent: March 8, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Rudolf J. Dams, Johan E. De Witte
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Patent number: 5274042Abstract: A graft polymer wherein an iodine-containing fluororubber has been grafted on an ethylene-.alpha.-olefin copolymer can be obtained by mixing 30 parts by weight of an iodine-containing fluororubber (a vinylidene fluoride-hexafluoropropylene copolymer containing iodine) and 70 parts by weight of an ethylene-propylene copolymer rubber at 180.degree. C. for 30 minutes while applying shear deformation using a Brabender mixer.Type: GrantFiled: February 12, 1992Date of Patent: December 28, 1993Assignee: Sumitomo Chemical Company, LimitedInventors: Keisaku Yamamoto, Yoshio Tanimoto, Kiyosi Ikeda, Nobuhiro Natsuyama
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Patent number: 5266639Abstract: Copolymers of tetrafluoroethylene (TFE) and hexafluoropropylene (HFP) having high HFP content and end-of-melting temperature, T.sub.m (end), as low as 200.degree. C. are disclosed. Exceptional performance as a processing aid in polyolefins results from having T.sub.m (end) of the TFE/HFP copolymer close to the processing temperature of the polyolefin. These TFE/HFP copolymers are soluble in fluorinated cyclic solvents. Copolymer/solvent systems copolymer at significant concentrations in selected solvents are fluid and stable at room temperature.Type: GrantFiled: August 28, 1992Date of Patent: November 30, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventors: George R. Chapman, Jr., Lewis E. Crenshaw, Rita S. McMinn, Richard A. Morgan, Donnan E. Priester, Charles W. Stewart, William H. Tuminello, Robert E. Tarney, John G. Van Alsten, Mark E. Wagman
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Patent number: 5260376Abstract: Disclosed are:1) a three-component resin composition comprising a hydroxyl group-containing compound (A), an epoxy group-containing compound (B) and a silane group-containing compound (C);2) a two-component resin composition comprising a hydroxyl group-containing compound (A) and silane group- and epoxy group-containing compound (D);3) a two component resin composition comprising hydroxyl group- and silane group-containing compound (E) and epoxy group-containing compound (B); and4) two-component resin composition comprising hydroxyl group- and epoxy group-containing compound (F) and silane group-containing compound (C); wherein at least one of the components in each of the resin compositions 1) to 4) is (are) fluorine-containing resin;5) a curable composition comprising one of the resin compositions 1) to 4) and a metal chelate compound as curing catalyst; and6) coating compositions comprising such curing composition and when required a pigment.Type: GrantFiled: June 25, 1992Date of Patent: November 9, 1993Assignee: Kansai Paint Company, LimitedInventors: Akimasa Nakahata, Nobushige Numa, Masahiro Yamane, Osamu Isozaki, Noboru Nakai
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Patent number: 5241007Abstract: Fluorinated styrenes of the formula I; ##STR1## where R.sub.1 is a C.sub.1 -C.sub.6 alkyl and R.sub.2 is the repeating unit ##STR2## where x is zero or any positive integer, which are useful as compatibilizing and toughening agents for various polymers such as styrene, dienes (butadiene, isoprene, etc.) acrylates, polymethacrylates, polycarbonates, polyesters, polyamides, etc. Particularly preferred are p-(1,1,1,3,3,3-hexafluoro-2-hydroxy isopropyl)-.alpha.-methylstyrene, polymers thereof, block and random copolymers thereof and polymer blends incorporating the same.Type: GrantFiled: January 21, 1992Date of Patent: August 31, 1993Assignee: The United Statets of America as represented by the Secretary of CommerceInventors: Charles C. Han, Manjun He, Yongming Liu, Yi Feng, Ming Jiang
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Patent number: 5229461Abstract: A vinylidene fluoride copolymer comprising 50 to 90% by mole of units having the formula (I):--CH.sub.2 --CF.sub.2 -- (I)1 to 30% by mole of units having the formula (II): ##STR1## 1 to 30% by mole of units having the formula (III): ##STR2## 1 to 30% by mole of units having the formula (IV): ##STR3## and a composition comprising the copolymer as the main component. Since the copolymer is excellent in solvent solubility, it can be dissolved in a widely used solvent for coatings and it is not required to treat the film at a high temperature after coating. Moreover, the obtained film is excellent in adhesion to a substrate, glossiness, weatherability, stain resistance and corrosion resistance.Type: GrantFiled: May 21, 1991Date of Patent: July 20, 1993Assignee: Daikin Industries, Ltd.Inventors: Hideya Saitoh, Yoshiki Shimizu, Masayuki Oka, Akira Chida, Atsushi Sakakura
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Patent number: 5208293Abstract: A rubber composition having low friction is proposed which contains a thermoplastic fluororesin, a thermosetting fluororubber and a low-molecular weight fluorine-containing polymer.Type: GrantFiled: October 26, 1990Date of Patent: May 4, 1993Assignee: NTN Engineering Plastics CorporationInventors: Yoshio Oki, Kazutoshi Sugitani, Takeo Kaneko, Yukimasa Shimizu, Hidetsugu Yagi
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Patent number: 5194335Abstract: A fluoroplastic resin dispersion is modified by the addition of a fluoroelastomer latex to yield a fluid coating or casting composition for forming films. The fluoroplastic resin dispersion, preferably an aqueous dispersion of a perfluoroplastic, such as polytetrafluoroethylene (PTFE), is modified by blending with a fluoroelastomer composition, preferably a latex, such that the fluoroplastic comprises up to about 95%, preferably up to about 90%, by weight of the invention composition. The fluoroelastomer component comprises at least about 5% by weight of the blend. The fluid composition and film according to the invention may preferably comprise from about 10-95% by weight fluoroplastic and from about 5-90% fluoroelastomer.Type: GrantFiled: November 26, 1985Date of Patent: March 16, 1993Assignee: Chemical Fabrics CorporationInventors: John A. Effenberger, Frank M. Keese
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Patent number: 5187201Abstract: Coating compositions and molding compositions containing an amount of alkyl vinyl ether polymer which is effective for improving leveling and/or preventing or eliminating foam, and the use of these copolymers for improving leveling and/or preventing or eliminating foam in coating compositions and molding compositions. The alkyl vinyl ether polymer is a copolymer containing identical or different repeating units of the formula ##STR1## in which R represents a C.sub.1-18 --alkyl group or C.sub.m F.sub.2m+1 --(CH.sub.2).sub.2 --group, where m is a number from 4 to 18, and identical or different repeating units of the formula ##STR2## in which R' represents various groups.Type: GrantFiled: January 19, 1990Date of Patent: February 16, 1993Assignee: BYK-Chemie GmbHInventors: Karl-Heinz Haubennestel, Alfred Bubat
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Patent number: 5179167Abstract: A meltable fluorine-containing resin composition comprising(A) a copolymer which has a molecular weight distribution peak in a lower molecular weight region and is selected from the group consisting of a tetrafluoroethylene/hexafluoropropylene copolymer and a copolymer of tetrafluorethylene and at least one fluorovinyl ether of the formula:CF.sub.2 .dbd.CF--O--R.sub.fwherein R.sub.f is a fluoroalkyl group having 1 to 10 carbon atoms, and(B) a copolymer which has a molecular weight distribution peak in a higher molecular weight region and is selected from the group consisting of a tetrafluoroethylene/hexafluoropropylene copolymer and a copolymer of tetrafluoroethylene and at least one fluorovinyl ehter of the formula:CF.sub.2 .dbd.CF--O--R.sub.fwherein R.sub.f is the same as defined above, which has good mechanical properties and molding properties.Type: GrantFiled: October 5, 1989Date of Patent: January 12, 1993Assignee: Daikin Industries, Ltd.Inventors: Kazuo Ishiwari, Tsuyoshi Noguchi
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Patent number: 5166265Abstract: Disclosed are:1) a three-component resin composition comprising a hydroxyl group-containing compound (A), an epoxy group-containing compound (B) and a silane group-containing compound (C);2) a two-component resin composition comprising a hydroxyl group-containing compound (A) and silane group- and epoxy group-containing compound (D);3) a two-component resin composition comprising hydroxyl group- and silane group-containing compound (E) and epoxy group-containing compound (B); and4) two-component resin composition comprising hydroxyl group- and epoxy group-containing compound (F) and silane group-containing compound (C); wherein at least one of the components in each of the resin compositions 1) to 4) is (are) fluorine-containing resin;5) a curable composition comprising one of the resin compositions 1) to 4) and a metal chelate compound as curing catalyst; and6) coating compositions comprising such curing composition and when required a pigment.Type: GrantFiled: March 1, 1990Date of Patent: November 24, 1992Assignee: Kansai Paint Company, LimitedInventors: Akimasa Nakahata, Nobushige Numa, Masahiro Yamane, Osamu Isozaki, Noboru Nakai
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Patent number: 5140070Abstract: Polymeric flame retardants comprise halogenated aromatic compounds having acylamino functional groups which are chemically bonded to cyclic imide-containing or imide-forming polymers or copolymers. The polymeric flame retardants are prepared by the reaction of halogenated aromatics containing a reactive hydrazido group with some or all of the anhydride groups of an cyclic alpha, beta-unsaturated dicarboxylic acid anhydride polymer or copolymer to form pendant halogenated-aromatic-substituted imide or amic acid groups. In addition, polymeric film retardants are used to render thermoplastic resins less flammable under conditions which promote combustion. Novel flame retardant hydrazides are disclosed.Type: GrantFiled: May 31, 1991Date of Patent: August 18, 1992Assignee: Elf Atochem North America, IncInventors: Ronald E. MacLeay, Terry N. Myers
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Patent number: 5139879Abstract: Solid bodies having a reflective surface are provided with an anti-reflection coating of a fluoropolymer blends of (1) a terpolymer composition derived from (a) perfluoroalkylakyl acrylate or methacrylate, (b) acrylic, methacrylic or itaconic acid, and (c) hydroxyl- containing acrylate or methacrylate; and (2) an amorphous fluoropolymer.Type: GrantFiled: November 21, 1991Date of Patent: August 18, 1992Assignee: Allied-Signal Inc.Inventors: Shaul M. Aharoni, Ajay Nahata, James T. Yardley
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Patent number: 5132368Abstract: The subject invention provides a composition having excellent extrusion characteristics comprising a difficulty-melt-processible polymer and 0.002-0.5 wt. % of one or more fluoropolymer process aids wherein the fluoropolymer has a fluorine to carbon ratio of at least 1:2, is capable of forming a die-coating film under the prevailing conditions of extrusion temperature and pressure, and contains an effective amount of polar functional polymer chain end groups, --W, wherein --W is selected from --COF, --SO.sub.2 F, --SO.sub.3 M, --OSO.sub.3 M, --COOR, and --COOM, wherein R is C.sub.1-3 alkyl and M is hydrogen, a metal cation, preferably an alkali or alkaline earth metal cation, or a quaternary ammonium cation.Type: GrantFiled: September 3, 1991Date of Patent: July 21, 1992Assignee: E. I. Du Pont de Nemours and CompanyInventors: George R. Chapman, Jr., Donnan E. Priester, Charles W. Stewart, Robert E. Tarney
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Patent number: 5118579Abstract: Blends of amorphous fluoropolymers with copolymer compositions derived form (a) perfluroalkylalkyl acrylate or methacrylate, (b) acrylic, methacrylic or itaconic acid, and (c) a hydroxyl-containing acrylate or methacrylate, in combination, can be cured to form coatings having properties typical of fluorine-containing polymers, with unusually low critical surface energy.Type: GrantFiled: September 20, 1991Date of Patent: June 2, 1992Assignee: Allied-Signal Inc.Inventors: Shaul M Aharoni, Ajay Nahata, James T. Yardley
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Patent number: 5115026Abstract: Process for the production of a composite material based on a polymer matrix comprising homogeneously dispersed therein an organic and/or inorganic filler, said process consisting in mixing together the aqueous dispersions of the single components, in which the dispersed particles of the dispersion have a surface charge of the same sign and "zeta potential" between 10 and 100 mV (in absolute value) and wherein the ratio (in absolute value) between the "zeta potentials" of the particles of each dispersion is between 0.2 and 5.Type: GrantFiled: September 13, 1988Date of Patent: May 19, 1992Assignee: Ausimont S.p.A.Inventors: Mario Visca, Giancarlo Boero, Daria Lenti
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Patent number: 5106911Abstract: An extrusion process for difficultly melt processible resins, for example, a difficultly-melt-processible hydrocarbon polymer, having improved processibility and having incorporated therein an elastomeric fluorocarbon copolymer, for example, an amorphous vinylidene fluoride copolymer, and a crystalline vinylidene fluoride polymer.Type: GrantFiled: July 15, 1991Date of Patent: April 21, 1992Assignee: E. I. Du Pont de Nemours and CompanyInventors: George R. Chapman, Jr., Donnan E. Priester
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Patent number: 5059480Abstract: A curable adhesive composition comprises a thermoplastic fluoropolymer, an elastomeric fluoropolymer, an ethylene copolymer and a crosslinking component. The composition preferably also comprises a tackifier. The crosslinking component preferably comprises a free radical generator such as a peroxide and a co-crosslinking agent comprising a multifunctional monomer. The adhesive is particularly useful with heat recoverable articles and bonds exceptionally well to fluoropolymer substrates.Type: GrantFiled: September 20, 1990Date of Patent: October 22, 1991Assignee: Raychem CorporationInventors: Robert Guerra, Pravin Soni
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Patent number: 5051479Abstract: A melt-processable thermoplastic composition consisting essentially of a blend of a melt processable thermoplastic fluorocarbon polymer and about 0.05 to about 0.5 percent by weight of an elastomeric copolymer of tetrafluoroethylene and a perfluoro(alkyl vinyl ether) exhibits improved processing properties.Type: GrantFiled: April 3, 1989Date of Patent: September 24, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: Anestis L. Logothetis, Charles W. Stewart
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Patent number: 5043390Abstract: The invention provides a novel copolymer comprising 25-75 mol % of a fluoroolefin such as CTFE or TFE, 10-70 mol % of an alkene such as ethylene or propylene, 3-40 mol % of a hydroxyl-containing allyl ether such as ethylene glycol monolallyl ether and 0-20 mol % of a carboxyl-containing monomer such as vinylacetic acid. This copolymer possesses favorable properties characteristic of fluororesins, is soluble in organic solvents including aromatic solvents low in polarity, such as xylene, and is curable at relatively low temperatures. The copolymer is useful particularly as a paint vehicle. The water repellency of the copolymer in cured state can be enhanced by incorporating a fluorine-containing surface modifier in the copolymer.Type: GrantFiled: April 4, 1990Date of Patent: August 27, 1991Assignee: Central Glass Company, LimitedInventors: Toshio Koishi, Yutaka Maruyama, Mikio Ootani, Seichi Katsuragawa, Kentaro Tsutsumi, Kiyomi Sugawara
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Patent number: 5041500Abstract: A heterogeneous meltable fluorine-containing polymer blend composition which comprises a tetrafluoroethylene/hexafluoropropylene copolymer and a copolymer of tetrafluoroethylene and at least one fluorovinyl ether of the formula:CF.sub.2 .dbd.CF--O--R.sub.f (I)wherein R.sub.f is a fluoroalkyl group having 1 to 10 carbon atoms, which is easily molded and provides an article having good mechanical properties.Type: GrantFiled: September 25, 1989Date of Patent: August 20, 1991Assignee: Daikin Industries, Ltd.Inventors: Kazuo Ishiwari, Tsuyoshi Noguchi
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Patent number: 5013792Abstract: Polymer blend composition having improved processibility and comprising:(a) a major portion of a difficultly melt-processible polymer, and(b) a minor portion of:(1) at least an effective amount, to improve processibility, of a fluorocarbon copolymer which at the melt-processing temperature of (a) is either in a melted form if crystalline, or is above its glass transition temperature if amorphous, and(2) at least an effective amount, to improve processibility, of at least one tetrafluoroethylene homopolymer or copolymer of tetrafluoroethylene and at least one monomer copolymerizable therewith, wherein the mole ratio of fluorine to hydrogen is at least 1:1, and which is solid at the melt-processing temperature of (a);masterbatches comprised of the processing aid; and processes utilizing the processing aid.Type: GrantFiled: August 29, 1990Date of Patent: May 7, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: George R. Chapman, Jr., Donnan E. Priester, Charles W. Stewart