Patents Examined by Lucille M. Phynes
  • Patent number: 4767838
    Abstract: 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: Grant
    Filed: February 9, 1987
    Date of Patent: August 30, 1988
    Assignee: Amoco Corporation
    Inventors: Robert A. Clendinning, George T. Kwiatkowski
  • Patent number: 4767828
    Abstract: 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: Grant
    Filed: July 27, 1987
    Date of Patent: August 30, 1988
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Gary A. Lodoen
  • Patent number: 4767839
    Abstract: 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: Grant
    Filed: July 6, 1987
    Date of Patent: August 30, 1988
    Assignee: Allied-Signal Inc.
    Inventor: Shaul M. Aharoni
  • Patent number: 4767830
    Abstract: 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: Grant
    Filed: September 22, 1987
    Date of Patent: August 30, 1988
    Assignee: Polyplastics Co., Ltd.
    Inventors: Yukihiko Kageyama, Toshio Nakane, Kenji Hijikata
  • Patent number: 4764570
    Abstract: 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: Grant
    Filed: April 6, 1987
    Date of Patent: August 16, 1988
    Assignee: Cassella Aktiengesellschaft
    Inventors: Steffen Piesch, Peter Dorries
  • Patent number: 4764584
    Abstract: 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: Grant
    Filed: September 11, 1987
    Date of Patent: August 16, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Josef Pfeifer, Rudolf Duthaler
  • Patent number: 4764583
    Abstract: 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: Grant
    Filed: March 10, 1987
    Date of Patent: August 16, 1988
    Assignee: Mitsui Petrochemical Industries, Ltd.
    Inventors: Kunisuke Fukui, Masanori Motooka
  • Patent number: 4764582
    Abstract: 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: Grant
    Filed: August 11, 1987
    Date of Patent: August 16, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Bernd Hisgen, Hans-Jakob Kock, Michael Portugall, Erhard Seiler, Gerd Blinne
  • Patent number: 4764585
    Abstract: 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: Grant
    Filed: September 15, 1987
    Date of Patent: August 16, 1988
    Assignee: Sandoz Ltd.
    Inventors: Jurg Heller, Bruno Kissling, Curt Muller, Tibor Robinson, Salvatore Valenti
  • Patent number: 4762909
    Abstract: 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: Grant
    Filed: September 23, 1987
    Date of Patent: August 9, 1988
    Assignee: The Dow Chemical Company
    Inventor: Marlin E. Walters
  • Patent number: 4760112
    Abstract: 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: Grant
    Filed: December 1, 1986
    Date of Patent: July 26, 1988
    Assignee: General Electric Company
    Inventors: Russell J. McCready, John A. Tyrell
  • Patent number: 4758636
    Abstract: 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: Grant
    Filed: November 21, 1986
    Date of Patent: July 19, 1988
    Assignee: Polyplastics Company, Ltd.
    Inventors: Kenji Hijikata, Toshio Kanoe
  • Patent number: 4758608
    Abstract: 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: Grant
    Filed: September 14, 1987
    Date of Patent: July 19, 1988
    Assignee: Hoechst Celanese Corporation
    Inventors: George L. Collins, Paul Zema, William M. Pleban
  • Patent number: 4757130
    Abstract: 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: Grant
    Filed: July 1, 1987
    Date of Patent: July 12, 1988
    Assignee: Hoechst Celanese Corporaton
    Inventor: Ronald N. DeMartino
  • Patent number: 4755555
    Abstract: Particulate polyimide molding resin characterized by high surface area and low crystallinity and molded articles prepared therefrom having unusually high toughness.
    Type: Grant
    Filed: November 10, 1986
    Date of Patent: July 5, 1988
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Carl H. Manwiller, Waifong L. Anton
  • Patent number: 4755556
    Abstract: 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: Grant
    Filed: August 10, 1987
    Date of Patent: July 5, 1988
    Assignee: Amoco Corporation
    Inventors: James E. Harris, Michael J. Michno, Jr.
  • Patent number: 4755587
    Abstract: 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: Grant
    Filed: March 26, 1987
    Date of Patent: July 5, 1988
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Verne R. Rinehart
  • Patent number: 4751128
    Abstract: 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: Grant
    Filed: July 31, 1987
    Date of Patent: June 14, 1988
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael Portugall, Bernd Hisgen, Hans-Jakob Kock, Erhard Seiler, Gerd Blinne
  • Patent number: 4751272
    Abstract: A process for producing an oxymethylene copolymer, comprising the steps of polymerizing trioxane and cyclic ether in the presence of a boron trifluoride catalyst, adding a hindered amine compound to the polymer obtained by said polymerization, and stabilizing instable chain ends of the polymer. The oxymethylene copolymer thus obtained provides excellent heat resistance and superior mechanical properties.
    Type: Grant
    Filed: April 27, 1987
    Date of Patent: June 14, 1988
    Assignee: Toray Industries, Inc.
    Inventors: Sigeru Okita, Yoshiyuki Yamamoto, Toshihiro Hatsu
  • Patent number: RE32741
    Abstract: 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: Grant
    Filed: June 4, 1987
    Date of Patent: August 30, 1988
    Assignee: Toray Industries, Inc.
    Inventors: Takehiko Miyoshi, Tadayuki Matsumoto, Keizo Sano