Patents Examined by Sam Acquah
  • Patent number: 4981904
    Abstract: Stable spray-coatable, water base composition having about 2 percent solids, that dries into glittering film having plurality of reflective surfaces resistant to flaking, comprising: a blend of a surfactant free first solution comprising, butyl methacrylate, butyl acrylate, 2-ethylhexyl acrylate, glacial methacrylic acid and styrene; a blend of a self-crosslinking second solution comprising, 2-ethylhexyl acrylate, butyl methacrylate, glacial methacrylic acid, styrene and at least one cross-linking polymer; a thickener gel; transparent polyethylene terephthalate chips on which a color imparting or reflective material has been vacuum deposited and cured fast by an epoxy resin and ammonia.
    Type: Grant
    Filed: June 9, 1989
    Date of Patent: January 1, 1991
    Inventor: Larry C. Fischer
  • Patent number: 4977240
    Abstract: A peroxide curing agent composition containing 20-90% of an unsaturated alkyd diluent which is fluid at room temperature, is disclosed. The curing agent is useful for the curing of unsaturated polyesters and eliminates the problem of the bleeding of harmful phthalate diluents from such cured polyesters, while providing excellent stability of the diluted peroxide.
    Type: Grant
    Filed: November 7, 1989
    Date of Patent: December 11, 1990
    Assignee: Kayaku Akzo Corporation
    Inventor: Akio Ishiwatari
  • Patent number: 4977238
    Abstract: Precondensates of urea and formaldehyde containing monomethylolacrylamidomethyleneurea are produced from pure acrylamidomethyleneurea and urea/formaldehyde precondensate or from the starting substances used for the manufacture of acrylamidomethyleneurea with formaldehyde. They are useful additives for aminoplastic resins, which in turn may be used as glue in the manufacture of chipboard sheets.
    Type: Grant
    Filed: November 29, 1989
    Date of Patent: December 11, 1990
    Assignee: Norsolor S.A.
    Inventors: Roger Garrigue, Jack Lalo
  • Patent number: 4977191
    Abstract: A water-soluble or water-dispersible polyester resin composition, suitable for textile sizing applications, comprises a reaction product of 20-50% by weight of waste terephthalate polymer, 10-40% by weight of at least one glycol and 5-25% by weight of at least one oxyalkylated polyol. Preferred compositions also comprise 20-50% by weight of isophthalic acid. A further water-soluble or water-dispersible resin comprises a reaction product of 20-50% by weight of waste terephthalate polymer, 10-50% by weight of at least one glycol and 20-50% by weight of isophthalic acid.
    Type: Grant
    Filed: June 27, 1989
    Date of Patent: December 11, 1990
    Assignee: The Seydel Companies, Inc.
    Inventor: Robert K. Salsman
  • Patent number: 4977235
    Abstract: Novel polyarylate polymers comprise alternating moieties derived from an aromatic dicarboxylic acid halide, with moieties derived from a hydroxyaryl-substituted 1,6-diaza [4.4] spirodilactam compound and, optionally, with moieties derived from a di(hydroxyphenyl) compound. The polyarylate polymers are thermoplastic polymers characterized by relatively high glass transition temperatures.
    Type: Grant
    Filed: December 21, 1989
    Date of Patent: December 11, 1990
    Assignee: Shell Oil Company
    Inventor: Pen-Chung Wang
  • Patent number: 4975519
    Abstract: Cationic polymerization of trioxane and a mixture of ester derivatives of .alpha.,.alpha.- and .alpha.,.beta.-isomers of glycerol formal yields acetal terpolymers having pendant functional groups (i.e., ester groups, or hydroxyl groups obtained by hydrolyzing ester groups, pendent from the polymer's backbone). The glycerol formal monomers employed in this invention may include functional groups selected from ester moieties which are protected from, and thus survive, the polymerization process with trioxane. These groups may then be present as functional reactive sites for the subsequent synthesis of block polymers and/or to chemically bind modifiers to the acetal terpolymer backbone, for example.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: December 4, 1990
    Assignee: Hoechst Celanese Corporation
    Inventors: Nan L. Yang, Andrew Auerbach, Rose Pesce, Jerry A. Broussard, James L. Paul
  • Patent number: 4975518
    Abstract: Cationic copolymerization of trioxane and 1,2,6-hexanetriol formal (HTF) or its ester derivatives yields acetal copolymers having pendant functional groups. The HTF formal or ester derivatives of HTF may therefore include functional groups selected from hydroxyl or ester moieties which are protected, and thus survive, the copolymerization with trioxane. These groups may then be present as functional reactive sites for the subsequent synthesis of block copolymers and/or to chemically bind modifiers to the acetal copolymer backbone, for example.
    Type: Grant
    Filed: May 12, 1989
    Date of Patent: December 4, 1990
    Assignee: Hoechst Celanese Corporation
    Inventors: Jerry A. Broussard, Andrew B. Auerbach, James L. Paul
  • Patent number: 4975523
    Abstract: A method for the manufacture of polyester polyols is disclosed. The method comprises feeding to a reactor at least one aliphatic carboxylic acid or ester thereof, at least one secondary dihydric alcohol and at least one primary trihydric alcohol, heating the resultant admixture and removing water. When at least 95% of the water has been removed, additional primary trihydric alcohol is added and heating is continued. The reactants are selected so that the range of molecular weights thereof is not more than 100. A block polyester polyol is obtained. Polyurethanes obtained from the polyester polyol tend to have more uniform and superior properties. The polyurethanes may be used in variety of end uses.
    Type: Grant
    Filed: March 21, 1989
    Date of Patent: December 4, 1990
    Assignee: Du Pont Neochem
    Inventor: Georges N. Altounian
  • Patent number: 4975522
    Abstract: The invention relates to linear, thermotropic crosslinkable polymers, which comprises (A) polycondensing a complex dicarboxylic dichloride having the formula ##STR1## wherein Ar.sub.1 is ##STR2## Ar.sub.2 is ##STR3## Y is H, F, Cl, CN, phenyl, C.sub.n H.sub.2n+1, or OC.sub.n H.sub.2n+1, q is a cardinal number between 1 and 2, andn is a cardinal number between 1 and 4;provided that when X.sub.1 =OCO, then X.sub.2 =COO, when X.sub.1 =COO, then X.sub.2 =OCO, when X.sub.1 =NHCO then X.sub.2 =COHN, and when X.sub.1 =CONH then X.sub.2 =NHCO;(B) with an unsaturated dihydroxy oligomeric compound of the formula (III) ##STR4## present as an oligomer, where R.sup.1 is a linear, aliphatic, saturated, C.sub.2-12 moiety, or a C.sub.4-10 oxyaliphatic moiety;R.sup.2 is H or CH.sub.3 moiety; andm is a cardinal number between 1 and 4; at a mole ratio of from about 1:5 to about 5:1, at a temperature of from about 140.degree. C. to about 240.degree. C., for a time period from about 0.
    Type: Grant
    Filed: May 25, 1989
    Date of Patent: December 4, 1990
    Assignee: Adademie der Wissenschaften der DDR
    Inventors: Manfred Ratzsch, Karin Grasshoff
  • Patent number: 4975477
    Abstract: Disclosed are certain polyester adhesive blend compositions comprising about 45-90 wt. percent of a copolyester, about 3-15 wt. percent of a plasticizer, and about 7-40 wt. percent of a tackifying resin. The blends are particularly useful in hot-melt glue gun applications.
    Type: Grant
    Filed: April 7, 1989
    Date of Patent: December 4, 1990
    Assignee: Eastman Kodak Company
    Inventors: Abraham J. Cox, Max F. Meyer, Jr.
  • Patent number: 4975520
    Abstract: A process for producing oxymethylene copolymers and terpolymers is disclosed which involves the non-linear addition of gaseous formaldehyde to a cyclic ether having at least two adjacent carbon atoms (1) and, in the case of a terpolymer, to a mixture of at least one (1) and one monoethylenically unsaturated aliphatic diol formal having at least four carbon atoms in its main chain (2), or to a mixture of (1) with a (2), in the presence of a polymerization initiator at a rate controlled so as to conform to a rate determined by kinetic equations that describe the rate of decomposition of trioxane to formaldehyde during conventional copolymerization of trioxane with a cyclic ether. The process and kinetic equations of the invention are applicable to batch reactions, single stream continuous reactions and dual stream continuous reactions.
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: December 4, 1990
    Assignee: Hoechst Celanese Corp.
    Inventor: George L. Collins
  • Patent number: 4973646
    Abstract: Disclosed are thermosetting, powder coating compositions comprised of semi-crystalline polyesters and .epsilon.-caprolactam-blocked bis(1-cyanato-1-methylethyl) benzene compounds which are readily curable at relatively-mild temperatures and using cure times commonly used to cure (cross-link) powder coatings. When using equivalent curing conditions, the disclosed coating compositions exhibit a higher degree of cross-linking than do combinations of amorphous polyesters and the .epsilon.-caprolactam-blocked bis(1-cyanato-1-methylethyl)-benzene compounds.
    Type: Grant
    Filed: April 9, 1990
    Date of Patent: November 27, 1990
    Assignee: Eastman Kodak Company
    Inventors: Jonathan S. Witzeman, Yeong-Ho Chang
  • Patent number: 4973670
    Abstract: The present invention provides for a process for preparing hollow polymer latexes by a one stage emulsion polymerization. The first step invloves introducing an effective amount of a first charge of a organic phase to an aqueous phase. The first charge of the organic phase comprises monomer which is vertually insoluble in the aqeuous phase and an inert-nonpolymerizable hydrocarbon. The polymer formed from polymerizing the monomer is virtually insoluble in the hydrocarbon, the hydrocarbon is virtually insoluble in the aqueous phase and the monomer is miscible with the hydrocarbon. The monomer is polymerized to produce a low molecular weight polymer such that the low molecular weight polymer will phase separate from the organic phase and conentrates at the surface of the introduced organic phase forming a low molecular weight polymer phase.
    Type: Grant
    Filed: November 22, 1989
    Date of Patent: November 27, 1990
    Assignee: The Dow Chemical Company
    Inventors: Charles J. McDonald, Yohannes Chonde, William E. Cohrs, Dalton C. MacWilliams
  • Patent number: 4973655
    Abstract: A process for the continuous production of linear thermoplastic polyesters comprises the following steps:(a) passing a transesterification or esterification product of an aliphatic or aromatic dicarboxylic acid having a molecular weight of <300 or an ester-forming derivative thereof with an aliphatic or cycloaliphatic diol having a molecular weight of <250 which may additionally contain a poly(alkylene oxide) glycol having a molecular weight of 400 to 4000 at from 250.degree. to 360.degree. C. under a pressure of 0.5 to 20 mmHg downward in the course of a residence time of from 3 to 10 minutes through an essentially upright tubular precondensation zone equipped with internal fitments having a free surface area of from 0.3 to 1.5 m.sup.2 /l to form a precondensate and a vaporous diol having a molecular weight <250,(b) separating into a precondensate and vaporous diol and(c) further condensing the precondensate in the bottom phase at from 240.degree. to 290.degree. C. under a pressure of from 0.
    Type: Grant
    Filed: June 12, 1989
    Date of Patent: November 27, 1990
    Assignee: BASF Aktiengesellschaft
    Inventors: Gunter Pipper, Georg N. Simon, Gerhard Heinz, Peter Ittemann, Gisbert Schleier
  • Patent number: 4973656
    Abstract: Disclosed is a water-dissipatable polyester containing a sulfonate group and at least 10 mole percent of a multifunctional or branch-inducing moiety. The polyester is useful to prepare coatings such as paints.
    Type: Grant
    Filed: February 1, 1990
    Date of Patent: November 27, 1990
    Assignee: Eastman Kodak Company
    Inventor: William W. Blount
  • Patent number: 4973519
    Abstract: An aqueous printing ink or its semi-aqueous or non-aqueous concentrate exemplified as comprising a substantially homogeneous system of the components:(1) from about 4 to about 80 weight % of one or more polyester materials having an acid component of from about 75 to about 84 mole % isophthalic acid and conversely from about 25 to about 16 mole % 5-sodiosulfoisophthalic acid, and having a glycol component of from about 45 to about 60 mole % diethylene glycol and conversely from about 55 to about 40 mole % 1,4-cyclohexanedimethanol or ethylene glycol or mixtures thereof;(2) from about 0 to about 60 weight % of pigment material;(3) from substantially none to about 90 weight % of water; and(4) from about 0.25 to about 5 weight % of a diacyl-glycerophospholipid.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: November 27, 1990
    Assignee: Eastman Kodak Company
    Inventors: Frank J. Tortorici, Kenneth R. Barton, Lawrence D. Queen
  • Patent number: 4970288
    Abstract: Non-toxic organotin catalysts containing at least one direct oxygen-to-tin bond and one direct carbon-to-tin bond are provided for use as esterification catalysts in the production of non-toxic polyester and polyester-containing compositions. Articles made from such polyester and polyester-containing compositions are suitable for use in regulated food, beverage, pharmaceutical, and medical-device applications.
    Type: Grant
    Filed: September 22, 1989
    Date of Patent: November 13, 1990
    Assignee: Atochem North America, Inc.
    Inventors: William A. Larkin, Emily C. Bossert, Edmund M. Gibbons
  • Patent number: 4968773
    Abstract: Urea-formaldehyde resins which may be cured to give products having a low total extractable formaldehyde content are prepared by the following process:(i) an aqueous solution containing more than 50% formaldehyde and urea are mixed in a formaldehyde:urea molar ratio of 2-3:1 at pH 6-11,(ii) this mixture is heated to at least 80.degree. C.,(iii) a mineral or organic acid is added to bring the mixture to pH 0.5-3.5,(iv) the mixture is heated at a temperature between 80.degree. C. and the reflux temperature, preferably for 15 minutes to 1 hour,(v) keeping the temperature at or above 80.degree. C., a base is added to bring the mixture to pH 6.5-9 and(vi) urea is added to the mixture at a temperature up to 45.degree. C. until the formaldehyde:urea molar ratio is within the range 0.8-1.8:1.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: November 6, 1990
    Assignee: Dyno Industrier AS
    Inventor: Ian R. Whiteside
  • Patent number: 4968772
    Abstract: Urea-formaldehyde resins which may be cured to give products having a low total extractable formaldehyde content are prepared by the following process:(i) aqueous 30-50% formaldehyde and urea are mixed in a formaldehyde:urea molar ratio of 2-3:1 at pH 6-11,(ii) this mixture is heated to at least 50.degree. C., preferably to at least 80.degree. C.,(iii) a mineral or organic acid is added to bring the mixture to pH 0.5-3.5,(iv) the mixture is heated at a temperature between 80.degree. C. and the reflux temperature, preferably for 15 minutes to 1 hour,(v) keeping the temperature at or above 80.degree. C., a base is added to bring the mixture to pH 6.5-9 and(vi) urea is added until the formaldehyde:urea molar ratio is within the range 0.8-8:1.In a modification of the process, solid particulate resins are obtained by reacting the mixture from step (v) with urea at a pH below 7 to increase the viscosity thereof, adding a base until the mixture reaches a pH of 6.5-9 and dehydrating the resulting mixture.
    Type: Grant
    Filed: September 19, 1988
    Date of Patent: November 6, 1990
    Assignee: Dyno Industrier AS
    Inventor: Ian R. Whiteside
  • Patent number: 4968774
    Abstract: Amino-plastic resins soluble in water of which the nitrogenous derivative is chosen from the group comprising urea, 1,3-dimethyl-urea, ethyleneurea, 4,5-dihydroxy-ethyleneurea or their mixtures and the aldehyde derivative is a mixture of from 1 to 99% by weight of glyoxal and from 99 to 1% by weight of glyoxal monoacetal of formula (RO).sub.2 CH--CHO; R=C.sub.1 -C.sub.4 alk, their ethers and their applications in particular with cellulosed fibre treatment.
    Type: Grant
    Filed: January 10, 1990
    Date of Patent: November 6, 1990
    Assignee: Societe Francaise Hoechst
    Inventors: Wilhelm Didier, Loison Sylvie, Blanc Alain