Patents Examined by L. Henderson
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Patent number: 4900365Abstract: Azeotrope-like compositions comprising trichlorofluoromethane, a dichlorotrifluoroethane selected from the group consisting of 1,1-dichloro-2,2,2-trifluoroethane and 1,2-dichloro-1,1,2-trifluoroethane and isopentane are novel compositions particularly useful as blowing agents in the preparation of polyurethane and polyisocyanurate foams.Type: GrantFiled: September 6, 1988Date of Patent: February 13, 1990Assignee: Allied-Signal Inc.Inventors: Earl E. A. Lund, Robert G. Richard, Ian R. Shankland
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Patent number: 4898922Abstract: Urethane resin having hydrophilic polar groups (mercapto groups) shows excellent dispersibility of magnetic powder when used as a binder for magnetic recording media. Magnetic recording media prepared by using the binder are excellent in surface-smoothness and durability. The mercapto groups contained in the magnetic layer react with isocyanate groups in the polyisocyanate to form thiourethane bonds to leave no hydrophilic polar groups, i.e., mercapto groups, and thus is excellent in moisture- and heat-resistance as well.The resin and the binding agent are advantageously used in the production of magnetic recording media, for example, magnetic tape, magnetic disc, etc.Type: GrantFiled: October 5, 1988Date of Patent: February 6, 1990Assignee: Takeda Chemical Industries, Ltd.Inventor: Hiroyuki Shiraki
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Patent number: 4897430Abstract: One component mixtures of tri- and higher functional polyoxyalklyeneamines and aromatic polyisocyanates do not react or react only partially at room temperature and are cured by intimate mixing and heating. They are useful as caulks, sealants, and adhesives, for example.Type: GrantFiled: October 31, 1988Date of Patent: January 30, 1990Assignee: Texaco Chemical CompanyInventors: George P. Speranza, Wei-Yang Su
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Patent number: 4883826Abstract: Mannich polyols of low viscosity and reduced reactivity are prepared by condensing a phenolic compound with formaldehyde and a mixture of diethanolamine and at least one other alkanol amine. The condensation product is the alkoxylated to form a polyol which is particularly useful in preparing rigid polyurethane foam.Type: GrantFiled: July 27, 1988Date of Patent: November 28, 1989Assignee: The Dow Chemical CompanyInventors: J. E. Marugg, Michael A. P. Gansow, J. A. Thoen
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Patent number: 4883825Abstract: A process for the manufacture of low density flexible polymethane foam via a catalyzed reaction of a highly reactive, high ethylene oxide, high functionality polyol, a hydrophilic polyhydric compound, water and polyisocyanates.Type: GrantFiled: December 30, 1987Date of Patent: November 28, 1989Assignee: Union Carbide Chemicals and Plastics Company Inc.Inventors: Paul M. Westfall, Frank E. Critchfield, William A. Gill
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Patent number: 4880844Abstract: Polyether flexible urethane foams are rendered flame laminatable by use of a combination of an organophosphorus additive to confer flame laminatable properties on the foam and a polyalkylene glycol additive to improve the flame laminatable properties. A halogenated flame retardant is preferably also contained in the foam.Type: GrantFiled: May 27, 1988Date of Patent: November 14, 1989Assignee: Akzo America Inc.Inventor: Gerald Fesman
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Patent number: 4876327Abstract: The invention relates to aromatic polyesters containing units with two carbonyl groups and having liquid crystalline properties. The aromatic polyesters are characterized in that the polyesters contain heterocyclic units with two carbonyl groups. Preferably these units are derived from furandicarboxylic acid. The aromatic polyesters show a considerable reduction in melting temperature, rendering the polyester more processable.Type: GrantFiled: May 11, 1988Date of Patent: October 24, 1989Assignee: Stamicarbon B.V.Inventors: Bindert K. Vriesema, Francesco Miniaci
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Patent number: 4876292Abstract: The present invention is directed to a reactive mixture for use in preparing a flexible polyurethane foam and to the foams produced therefrom. The reactive mixture broadly comprises(A) from more than 0 up to 3 parts by weight per 100 parts by weight of components (B) and (C) of an amine of the formula:H.sub.2 N--R--NH.sub.2where R is a C.sub.4 to C.sub.10 straight or branched alkylene group, or a C.sub.4 to C.sub.15 alicyclic group,(B) from 0 to 30% by weight of a polyoxyalkylene polyamine having a molecular weight of from about 400 to about 5000 and containing from 2 to 3 primary amino groups, and(C) from 700 to 100% by weight of one or more polyether polyhydroxyl compounds having hydroxyl functionalities from about 2 to 3 and molecular weights of from about 1000 to about 10,000, the percents of components (B) and (C) totalling 100%.Type: GrantFiled: October 6, 1988Date of Patent: October 24, 1989Assignee: Mobay CorporationInventor: Charles M. Milliren
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Patent number: 4870150Abstract: A high performance urethane sealant or coating composition is made from a physical blend of a polypropyleneoxide polyol intermediate and a high molecular weight polybutyleneoxide polyol intermediate or copolymers thereof wherein the comonomer is preferably ethyleneoxide. The urethane prepolymer is made by reacting the physical intermediate blend with a polyisocyanate and preferably blocking the same with blocking agents such as phenols to prevent reaction with moisture in the air. Alternatively, the prepolymer can be end capped with an epoxy. Cure is effected through the utilization of curing agents such as polyamines or polyimines, e.g., diamines, amine terminated polyethers, ketimines, aldimines, and the like. The sealant composition can contain various fillers, organosilanes, and the like. The prepolymers as well as the sealants of the present invention have improved physical rubbery type properties such as higher elongation, lower modulus, and generally improved tensile strength.Type: GrantFiled: May 23, 1988Date of Patent: September 26, 1989Assignee: Tremco IncorporatedInventors: Baldev K. Bandlish, Larry R. Barron
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Patent number: 4865795Abstract: In a process for producing thermosetting resins by the polymerization reaction of a cyclic carbonate with a polyvalent isocyanate compound, potassium fluoride is used as the catalyst. If desired, a co-catalyst selected from the group consisting of polyethylene oxides, cryptands and quaternary onium salts is additionally used. The thermosetting resins so produced have excellent impact stength and, therefore, are useful as molded materials and various substrates.Type: GrantFiled: June 13, 1988Date of Patent: September 12, 1989Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Tetsunosuke Shiomura, Yoshiho Sonobe, Akihiro Yamaguchi
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Patent number: 4857581Abstract: Cationic paint binders obtained through reaction of substituted ureas with formaldehyde and phenols are described. The substituted ureas are obtained through reaction of an isocyanate compound carrying at least one free, and optionally also blocked, NCO-group with equivalent quantities of a secondary non-aromatic amine. After partial protonation, the binders are used in water-dilutable paints, particularly in cathodically depositable electrodeposition paints.Type: GrantFiled: December 15, 1987Date of Patent: August 15, 1989Assignee: Vianova Kunstharz, A.G.Inventors: Willibald Paar, Anton Arzt
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Patent number: 4857364Abstract: The intumescent compositions according to the invention are reaction mixtures which are obtained on mixing and reacting the following components:(A) specific polyether polyols,(B) specific polyester polyols,(C) specific phosphorus-containing polyols,(D) inert desiccants,(E) dehydratable fillers,(F) other inorganic auxiliaries and fillers,(G) catalysts and(H) polyisocyanates.Type: GrantFiled: December 14, 1987Date of Patent: August 15, 1989Assignee: Bayer AktiengesellschaftInventor: Wulf von Bonin
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Patent number: 4855383Abstract: Disclosed is a curable composition suitable for use as a coating, adhesive, or the like which comprises a storage-stable, liquid composition comprising an isocyanate-functional compound (e.g. monomer, oligomer, or polymer), an epoxy component, and an alkylating agent; and a tertiary amine catalyst precursor. Upon admixing of the liquid composition and tertiary amine, the tertiary amine forms a quaternary ammonium salt in situ for achieving cross-linking of said isocyanate-functional compound.Type: GrantFiled: September 23, 1988Date of Patent: August 8, 1989Assignee: Ashland Oil, Inc.Inventors: Laurence G. Dammann, Brent A. Blakley, Gary M. Carlson
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Patent number: 4853417Abstract: Rigid polyurethane foams are obtained by reacting an isocyanate-reactive component containing at least two isocyanate-reactive hydrogen atoms, having a molecular weight of from 32 to 10,000 or a mixture thereof, with a polyisocyanate composition comprising(a) 30 to 70 pbw of polymethylene polyphenyl polyisocyanate with an iscocyanate content of from 29 to 32%,(b) 30 to 70 pbw of a compound having 30 to 42% by weight isocyanate content obtained by reacting 2,4- and/or 2,6-tolylene diisocyanate with an active hydrogen containing compound, thereafter initiating a reaction in the presence of trimerization catalyst, if necessary diluted with 2,4- and/or 2,6-tolylene diisocyanate,(c) 0 to 30 pbw of other isocyanate compounds in the presence of water and/or organic blowing agents, catalysts and surfactants.Type: GrantFiled: June 8, 1988Date of Patent: August 1, 1989Assignee: Sumitomo Bayer Urethane Co., LtdInventors: Eckehard Weigand, Yoshinori Kihara, Masaru Honda
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Patent number: 4853261Abstract: The invention relates to a process for the production of coatings based on polymers having a hydantoin structure by reacting blocked polyisocyanate carrying carbodiimide and/or uretone imine groups with .alpha.,.beta.-unsaturated diicarboxylic acids or derivatives thereof at 50.degree. to 700.degree. C. said reaction being carried out on the substrate to be coated.Type: GrantFiled: April 13, 1988Date of Patent: August 1, 1989Assignee: Bayer AktiengesellschaftInventors: Willi Dunwald, Hans Schlegel, Reinhard Halpaap, Josef Pedain
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Patent number: 4851504Abstract: An improved copolyester fiber capable of being dyed with cationic dyes and having an excellent brightness, heat resistance and a satisfactory mechanical strength comprises a copolyester resin comprising a polymerization product of at least one aromatic dicarboxylic acid compound, at least one alkylene diol compound and at least one quaternary phosphonium organic sulfonate of the formula (I): ##STR1## wherein A=an aromatic or aliphatic radical, X.sup.1 =H or an ester-forming organic radical, X.sup.2 =an ester-forming organic radical, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 =an alkyl or aryl radical, n=1 or more, and having an [.eta.].sub.f of 0.5 or more, the copolyester fiber having a silk factor of 25 or more and exhibiting the number of scission of backbone chains of the copolyester molecules of 140.times.10.sup.23 or less per 10.sup.6 g of fiber when wet heat-treated in a solution of 0.4 g/l of acetic acid in distilled water at 130.degree. for 60 minutes.Type: GrantFiled: January 15, 1988Date of Patent: July 25, 1989Assignee: Teijin LimitedInventors: Togi Suzuki, Shinji Ohwaki, Setsuo Yamada, Hironori Yamada, Kimihiro Ogawa, Kohichi Iohara
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Patent number: 4849492Abstract: Polyhydantoins of the general formula ##STR1## in which X stands for a bivalent aliphatic, aromatic or araliphatic radical,R.sup.1 denotes --CH.sub.2 --, ##STR2## --O--, --SO.sub.2 --, --C(R.sup.5,R.sup.6) R.sup.2 and R.sup.3 are identical or different and stand for hydrogen, C.sub.1 -C.sub.6 -alkyl or together stand for --(CH.sub.2).sub.4 --or --(CH.sub.2).sub.5 --andR.sup.5 and R.sup.6 are identical or different and stand for C.sub.1 -C.sub.6 -alkyl or together stand for --(CH.sub.2).sub.4 --or --(CH.sub.2).sub.5 --,are valuable high temperature-resistant polymers, which have utility in particular as film materials.Type: GrantFiled: September 29, 1988Date of Patent: July 18, 1989Assignee: Bayer AktiengesellschaftInventors: Gerhard Heywang, Friedrich Jonas, Rudolf Merten, Werner Schmidtberg
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Patent number: 4839128Abstract: Copolyesteramides consisting of specific units can be injection molded at a low temperature into a part having a high heat distortion temperature. A filled composition is obtained by blending the copolyesteramide with an inorganic filler. A magnetic resin composition is obtained by blending the copolyesteramide with an magnetic powder.The copolyesteramide consists essentially of units <I>, <II>, <III>, <IV>, and <V> of the following formulae: ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently at least one divalent radical selected from the group consisting of para-phenylene, 2,6-naphthalene, and 4,4'-biphenylene,R.sup.5 is a para- or meta-phenylene radical,X.sup.1 is --NH--,X.sup.Type: GrantFiled: January 28, 1988Date of Patent: June 13, 1989Assignee: Kawasaki Steel Corp.Inventors: Kenji Yoshino, Tadahiro Wakui, Yumiko Kumazawa, Mitsuhiko Izumi, Touru Yamagishi
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Patent number: 4824928Abstract: This invention discloses a copolyester which has been found to be optically anisotropic in the melt and which readily undergoes melt processing to form quality fibers and molded articles. These copolyesters are particularly suitable for use in making tire cord which has an outstanding combination of properties including tenacity, modulus, toughness and flex life. This invention specifically reveals a copolyester which is comprised of repeat units which are derived from (A) at least one member selected from the group consisting of phenyl hydroquinone, hydroxy benzoic acid and hydroxy naphthoic acid; (B) at least one diol selected from the group consisting of 1,4-bis(4-hydroxycumyl) benzene, 1,3-bis(4-hydroxycumyl) benzene, alkyl substituted 1,4-bis(4-hydroxycumyl) benzene, and alkyl substituted 1,3-bis(4-hydroxycumyl) benzene; and (C) a diacid component which is comprised of terephthalic acid and optionally up to about 10 mole percent isophthalic acid.Type: GrantFiled: March 28, 1988Date of Patent: April 25, 1989Assignee: The Goodyear Tire & Rubber CompanyInventors: Edward R. Terrill, Douglas D. Callander
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Patent number: 4822827Abstract: Disclosed are novel high flexural modulus polyurethane plastics wherein a polyisocyanate and a particular combination of extenders including cycloalkane diol are reacted optionally in the presence of a minor proportion of high molecular weight polyol.The polymers have outstanding resistance to high temperatures thereby expanding their utilities into higher temperature end-use environments than related prior art materials. Certain members of these new polymers are also possessed of outstanding optical clarity which thereby provides a combination of properties heretofore not available in a polyurethane. These polymers are easily melt-fabricated notwithstanding their inherent high temperature properties.Type: GrantFiled: December 17, 1987Date of Patent: April 18, 1989Assignee: The Dow Chemical CompanyInventors: Henry W. Bonk, Augustin T. Chen, Benjamin S. Ehrlich