Patents Examined by Lucille M. Phynes
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Patent number: 4767828Abstract: A polyester-based spandex filament or film is provided. The filaments when used swim-wear fabrics provide the fabrics with increased resistance to mildew-induced degradation. The filaments are formed from a spandex derived substantially from a poly(1,2-dimethyl-1,3-propylene 1,12-dodecanedioate) glycol having no more than 15 milliequivalents of glycol acidity per kilogram of glycol, which glycol is capped with an organic diisocyanate and then chain-extended with an aliphatic diamine.Type: GrantFiled: July 27, 1987Date of Patent: August 30, 1988Assignee: E. I. Du Pont de Nemours and CompanyInventor: Gary A. Lodoen
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Patent number: 4767830Abstract: The invention process comprises reacting a polyester with a hydroxy-aromatic carboxylic ester to effect the transesterification and then further polymerizing the product. The process is conducted so that the obtained product has a high molecular weight and does not contain impurities, without corrosion of a used reactor.Type: GrantFiled: September 22, 1987Date of Patent: August 30, 1988Assignee: Polyplastics Co., Ltd.Inventors: Yukihiko Kageyama, Toshio Nakane, Kenji Hijikata
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Patent number: 4767839Abstract: Poly(esteramide) having thermotropic polymorphic properties is characterized by the repeating structure ##STR1## where: x=integers from 1 to 14Y=integers from 3 to 9R.sub.1, R.sub.2 =Hwhen x+y is an odd integer, properties usually associated with liquid crystal polymers are seen, while when x+y is an even integer birefringence above a major endotherm is observed but the spontaneous flow property usually seen with liquid crystal polymers is absent.Type: GrantFiled: July 6, 1987Date of Patent: August 30, 1988Assignee: Allied-Signal Inc.Inventor: Shaul M. Aharoni
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Patent number: 4767838Abstract: Described herein are novel crystalline chain extended poly(aryl ether ketones) which display excellent toughness, fabricability and very good high temperature and solvent resistance.Type: GrantFiled: February 9, 1987Date of Patent: August 30, 1988Assignee: Amoco CorporationInventors: Robert A. Clendinning, George T. Kwiatkowski
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Patent number: 4764585Abstract: Cationic fixing agents based on the reaction products of(a) a monofunctional or polyfunctional amine having one or more primary and/or secondary and/or tertiary amino groups and(b) cyanamide, dicyandiamide, guanidine or bisguanidinegive improved results when the reaction takes place in the presence of a catalyst (K) selected from metals, metal salts and heterocyclic nitrogen-containing organic bases, particularly zinc chloride.Type: GrantFiled: September 15, 1987Date of Patent: August 16, 1988Assignee: Sandoz Ltd.Inventors: Jurg Heller, Bruno Kissling, Curt Muller, Tibor Robinson, Salvatore Valenti
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Patent number: 4764582Abstract: Wholly aromatic thermotropic polyesters are based on(A) from 25 to 60 mol % of a mixture of(A.sub.1) 4-hydroxybenzoic acid and(A.sub.2) 3-hydroxybenzoic acid, 4-aminobenzoic acid and/or 3-aminobenzoic acid or their chlorine, bromine, C.sub.1 -C.sub.8 -alkyl or C.sub.1 -C.sub.8 -alkoxy derivatives substituted in the nucleus,the molar ratio of A.sub.1 to A.sub.2 being from 5:1 to 41:1,(B) from 20 to 37.5 mol % of a mixture of(B.sub.1) terephthalic acid and(B.sub.2) isophthalic acid,the molar ratio of B.sub.1 to B.sub.2 being from 1.04:1 to 19:1, and(C) from 20 to 37.5 mol % of a mixture of(C.sub.1) hydroquinone and(C.sub.2) 4,4'-dihydroxydiphenyl,the molar ratio of C.sub.1 to C.sub.2 being from 0.1:1 to 2.67:1 and the molar ratio of B to C being from 0.9:1 to 1.1:1.Type: GrantFiled: August 11, 1987Date of Patent: August 16, 1988Assignee: BASF AktiengesellschaftInventors: Bernd Hisgen, Hans-Jakob Kock, Michael Portugall, Erhard Seiler, Gerd Blinne
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Patent number: 4764570Abstract: Sulphonamide compounds of the formula ##STR1## are prepared by condensation of sulphonamides of the formulaR.sup.1 --SO.sub.2 --NH.sub.2-m-p R.sup.2.sub.m (--CH.sub.2 OH).sub.pwith formaldehyde and diols or diol monoethers of the formula ##STR2## in a molar ratio of sulphonamide: formaldehyde: diol or diol monether of 1:(1-p):0.5 to 1:(4-p):6 in the presence of a catalyst which splits off water and at temperatures of 80.degree. to 250.degree. C.,whereinR.sup.1 is phenyl, phenyl substituted phenyl, or alkyl substituted phenyl having 1 to 4 alkyl carbon atoms,R.sup.2 is alkyl having 1 to 4 carbon atoms,R.sup.3 is hydrogen or alkyl having 1 to 4 carbon atoms,R.sup.4 is hydrogen or alkyl having 1 to 18 carbon atoms,R.sup.5 is hydrogen, R.sup.2, ##STR3## R.sup.6 is R.sup.4 or ##STR4## m is zero or one, p is zero, one or two with the sum of m and p ranging from 0 to 2, andn is a number from 2 to 19q is one, two or threeand the compounds so obtained are used as modifying agents for melamine resins.Type: GrantFiled: April 6, 1987Date of Patent: August 16, 1988Assignee: Cassella AktiengesellschaftInventors: Steffen Piesch, Peter Dorries
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Patent number: 4764583Abstract: A melt-moldable wholly aromatic polyester comprising (A) aromatic hydroxycarboxylic acid residues, (B) aromatic diol residues, (C) 4,4'-dihydroxydiphenyl ether residues represented by the following formula ##STR1## and (D) aromatic dicarboxylic acid residues, and a melt-moldable wholly aromatic polyester comprising (A) aromatic hydroxycarboxylic acid residues, (C)' aromatic diol residues represented by the following formula--O--Ar.sup.4 --O--wherein Ar.sup.4 represents a group at least 60 mole % of which consists of a group of the following formula (a) ##STR2## or a group of the formula (a) and a group of the following formula (b) ##STR3## and (D) aromatic dicarboxylic acid residues.Type: GrantFiled: March 10, 1987Date of Patent: August 16, 1988Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Kunisuke Fukui, Masanori Motooka
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Patent number: 4764584Abstract: Homo- and copolycondensates selected from the group consisting of linear saturated polyamides, polyesters and polyester amides derived from dicarboxylic acids of formula IV ##STR1## wherein Z is a direct bond, methylene, --O--, --S--, --SO--, --SO.sub.2, --CO--, --NH-- or alkylidene, R.sup.1 and R.sup.2 are independently alkyl, halogen, cyano, nitro, alkoxy, phenoxy or benzyl, and m and n are independently 0 to 3, are radiation-sensitive and are particularly suitable for the production of protective coatings and relief images.Type: GrantFiled: September 11, 1987Date of Patent: August 16, 1988Assignee: Ciba-Geigy CorporationInventors: Josef Pfeifer, Rudolf Duthaler
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Patent number: 4762909Abstract: A new process for making polyketones which comprises reacting a diacylaromatic compound with a bis(trichloromethylketone) compound in the presence of a basic catalyst. New poly-.beta.-diketones have been prepared using the process.Type: GrantFiled: September 23, 1987Date of Patent: August 9, 1988Assignee: The Dow Chemical CompanyInventor: Marlin E. Walters
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Patent number: 4760112Abstract: Polyetherimide ester polymers exhibiting a high flexural modulus comprising the reaction products of:(i) at least one diol;(ii) at least one dicarboxylic acid or an ester forming reactive derivative thereof; and(iii) a set of reactants selected from(a) (1) at least one high molecular weight poly(oxy alkylene)diamine, and (2) at least one tricarboxylic acid or its derivative, or(b) at least one high molecular weight polyoxyalkylene diimide diacid;wherein the weight ratio of (iii) to (ii) is from about 0.002 to 0.20:1.Type: GrantFiled: December 1, 1986Date of Patent: July 26, 1988Assignee: General Electric CompanyInventors: Russell J. McCready, John A. Tyrell
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Patent number: 4758636Abstract: A polyester composition comprises (1) a polyester being incapable of further substantial propagation of the chains by heating, being capable of forming the anisotropic phase in the molten state, being capable of the melt-processing and (2) an epoxy compound and is improved in heat resistance.Type: GrantFiled: November 21, 1986Date of Patent: July 19, 1988Assignee: Polyplastics Company, Ltd.Inventors: Kenji Hijikata, Toshio Kanoe
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Patent number: 4758608Abstract: Ultraviolet curable terpolymers of trioxane, from at least 65 weight percent to about 75 weight percent of 1,3-dioxolane and from about 2 weight percent to about 20 weight percent of a monoethylenically unsaturated aliphatic diol formal having at least 4 carbon atoms in its main chain, e.g., 4,7-dehydro- 1,3-dioxepin, which are non-crystalline at room temperature or above are disclosed. These terpolymers, when admixed with a multifunctional crosslinking monomer, e.g., a multifunctional acrylate such as 1,6-hexanediol diacrylate, and a photosensitizer, e.g., a benzoin compound such as benzoin isobutyl ether, can be cured to an insoluble, non-tacky, rubbery state using UV radiation. The thus-cured polymeric materials form useful crosslinked films, and when cryogenically ground to a suitable small particle size can be blended with conventionally prepared crystalline oxymethylene homo-, co- and terpolymers to improve the latters' impact properties.Type: GrantFiled: September 14, 1987Date of Patent: July 19, 1988Assignee: Hoechst Celanese CorporationInventors: George L. Collins, Paul Zema, William M. Pleban
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Patent number: 4757130Abstract: This invention provides novel condensation polymers with pendant side chains which exhibit nonlinear optical response. The polymers have utility as a transparent optical component of optical switch or light modulator devices.Type: GrantFiled: July 1, 1987Date of Patent: July 12, 1988Assignee: Hoechst Celanese CorporatonInventor: Ronald N. DeMartino
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Patent number: 4755555Abstract: Particulate polyimide molding resin characterized by high surface area and low crystallinity and molded articles prepared therefrom having unusually high toughness.Type: GrantFiled: November 10, 1986Date of Patent: July 5, 1988Assignee: E. I. du Pont de Nemours and CompanyInventors: Carl H. Manwiller, Waifong L. Anton
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Patent number: 4755556Abstract: Composites comprising structural fibers such as carbon fibers and, as the matrix resin, an aryl ether sulfone polymer comprising a 4,4'-bis-phenylsulfonyl biphenyl and at least two additional arylene structural units. The matrix resins exhibit improved toughness and stress crack resistance and a reduced tendency toward crystallization. The polymers are soluble and film-forming from solution, and may be used as coating and impregnating resins for producing the laminates and fiber-reinforced composites of this invention.Type: GrantFiled: August 10, 1987Date of Patent: July 5, 1988Assignee: Amoco CorporationInventors: James E. Harris, Michael J. Michno, Jr.
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Patent number: 4755587Abstract: High molecular weight polyester resins such as polyethylene terephthalate, are sometimes produced from low molecular weight polyester prepolymers having the same composition by solid state polymerization. The low molecular weight polyester prepolymers which are used in such solid state polymerizations are normally prepared by conventional melt polymerizations and are generally in the form of pellets or chips. It has been unexpectedly found that solid state polymerization rates can be greatly improved by utilizing polyester prepolymers which are in the form of porous pills. By utilizing polyester prepolymers that are in the form of porous pills, higher molecular weights can be achieved after shorter solid state polymerization times.Type: GrantFiled: March 26, 1987Date of Patent: July 5, 1988Assignee: The Goodyear Tire & Rubber CompanyInventor: Verne R. Rinehart
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Patent number: 4751281Abstract: Novel polymeric compounds of the repeating structural unit (I) ##STR1## in which R.sub.1 is hydrogen, 0.degree., CN, cyanomethyl, C.sub.1 -C.sub.12 -alkyl, C.sub.3 -C.sub.12 -alkenyl or C.sub.3 -C.sub.12 -alkynyl subject to the proviso that the carbon atom attached to the nitrogen atom is a primary carbon atom, C.sub.7 -C.sub.12 -aralkyl, C.sub.1 -C.sub.12 -acyl, 2,3-epoxypropyl or C.sub.2 -C.sub.6 -alkyl substituted by OH, R.sub.2 is C.sub.2 -C.sub.18 -alkylene, C.sub.4 -C.sub.18 -alkylene substituted by 1 or 2 oxygen or nitrogen atoms in the chain, C.sub.5 -C.sub.18 -cycloalkylene, C.sub.6 -C.sub.18 -arylene or C.sub.8 -C.sub.18 -aralkylene, R.sub.3 is as defined for R.sub.2 or is a group of the formula (II) or (III) ##STR2## in which R.sub.4 is hydrogen or C.sub.1 -C.sub.4 -alkyl and R.sub.5 is C.sub.2 -C.sub.12 -alkylene, C.sub.4 -C.sub.12 -alkenylene subject to the proviso that the carbon atom attached to the nitrogen atom is a primary carbon atom, or is C.sub.8 -C.sub.Type: GrantFiled: February 18, 1987Date of Patent: June 14, 1988Assignee: Ciba-Geigy CorporationInventors: Giuseppe Cantatore, Valerio Borzatta
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Patent number: 4751128Abstract: Fully aromatic themotropic polyesters are based on(A) from 30 to 60 mol % of 4-hydroxybenzoic acid,(B) from 20 to 35 mol % of a mixture of(B.sub.1) terephthalic acid and(B.sub.2) isophthalic acid,the molar ratio of B.sub.1 to B.sub.2 being from 1.04:1 to 19:1, and(C) from 20 to 35 mol % of a mixture of(C.sub.1) hydroquinone,(C.sub.2) 4,4'-dihydroxydiphenyl and(C.sub.3) from 0 to 5 mol % of a dihydroxy compound of the general formula I ##STR1## where R and R' are each C.sub.1 -C.sub.4 -alkyl, halogen or aryl, n is 1, 2 or 3 and m is 0 or 1,the molar ratio of C.sub.1 to C.sub.2 being from 0.1:1 to 2.67:1 and the molar ratio of B to C being from 0.9:1 to 1.1:1.Type: GrantFiled: July 31, 1987Date of Patent: June 14, 1988Assignee: BASF AktiengesellschaftInventors: Michael Portugall, Bernd Hisgen, Hans-Jakob Kock, Erhard Seiler, Gerd Blinne
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Patent number: RE32741Abstract: A polyester fiber having a tenacity of at least 4.0 g/d is formed from a copolyester having a degree of polymerization of from 80 to 100 of which copolyester 1.0 to 2.0 mol % of its acid component has a metal sulfoisophthalic group and 0.5 to 1.9 weight % of which copolyester is provided by a glycol component provided by glycol having a molecular weight of from 400 to 6000. The polyester fiber is readily dyed with basic dyes.The polyester fiber can be prepared by spinning the copolyester at a shear rate of .ltoreq.10.sup.4 sec.sup.-1, a spinning draft ratio of .ltoreq.250, a back pressure of the spinneret of .gtoreq.40 kg/cm.sup.2 and a shear stress of .ltoreq.(Q+0.7).times.10.sup.7 dyne/cm.sup.2, where Q is the mass output rate per single hole (g/min).Type: GrantFiled: June 4, 1987Date of Patent: August 30, 1988Assignee: Toray Industries, Inc.Inventors: Takehiko Miyoshi, Tadayuki Matsumoto, Keizo Sano