From Dicarboxylic Acid Or Derivative And At Least One Polyol; Or From A Diester Of A Polycarboxylic Acid As Sole Reactant Patents (Class 524/601)
  • Patent number: 6281283
    Abstract: A continuous process for the preparation of polyalkylene arylates A) containing lubricants and nucleating agents, in which an aromatic dicarboxylic acid or esters or ester-forming derivatives thereof are esterified or transesterified with a molar excess of an aliphatic dihydroxy compound and the (trans)esterification product obtained is polycondensed, wherein when at least 80% of the desired viscosity number has been reached, lubricants B) and nucleating agents C) are added to the polymer melt and the melt is optionally post-condensed and then discharged, cooled and granulated.
    Type: Grant
    Filed: September 7, 2000
    Date of Patent: August 28, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Thomas Heitz, Martin Klatt
  • Publication number: 20010012862
    Abstract: Provided is a liquid crystal polyester resin composition comprising 100 parts by weight of a liquid crystal polyester resin, 2 to 50 parts by weight of hollow sphere having an average particle diameter of 5 to 500 &mgr;m and a volume hollowness of 60 to 80%, and 0 to 40 parts by weight of inorganic fiber, wherein said liquid crystal polyester resin composition has the specific range of fracture rate of the hollow sphere.
    Type: Application
    Filed: December 14, 2000
    Publication date: August 9, 2001
    Inventor: Mituo Maeda
  • Patent number: 6268021
    Abstract: A binder vehicle composition which is suitable for coating media, containing: A) 20 to 77% by weight of one or more binder vehicles based on oligomeric or polymeric polyol compounds with a hydroxyl number of 80 to 300, an acid number of 0 to 30, a number average molecular weight (Mn) of 500 to 10,000, and a glass transition temperature of −20 to +70° C.; B) 77 to 20% by weight of crosslinking agents based on aliphatic and/or cycloaliphatic polyisocyanates; C) 3 to 20% by weight of oligo- or polyesters, which contain carboxyl groups, as catalyst resins, which have an acid number of 210 to 300 mg KOH/g and a number average molecular weight (Mn) of 420 to 3000; and one or more organic solvents and/or water.
    Type: Grant
    Filed: December 11, 1998
    Date of Patent: July 31, 2001
    Assignee: Herberts GmbH
    Inventors: Carmen Flosbach, Friedrich Herrmann, Walter Schubert, Dirk Schild
  • Publication number: 20010007899
    Abstract: The present invention provides a copolyester resin composition which has good physical properties, biodegradability and processability and a process for preparing and/or producing the same. To improve the biodegradability and physical properties of the copolyester, the present invention applied multi-stage reaction step, and copolyester resin having number average molecular weight of from 30,000 to 70,000, weight average molecular weight of from 100,000 to 600,000, melting point of from 55° C. to 120° C., and melt index of from 0.1 to 30 g/10 minute (190° C., 2,160 g) is obtained. The processability and physical properties of the copolyester resin of the present invention has been greatly enhanced by incorporating (i) an “aromatic-aliphatic prepolymers” having number average molecular weight of from 300 to 30,000 and the contiguous repeating unit of aromatic group in the dicarboxylic acid position of “aromatic-aliphatic prepolymers” is less than 5.
    Type: Application
    Filed: December 11, 2000
    Publication date: July 12, 2001
    Inventors: Hyun Soo Chung, Jae Wang Lee, Dong Hoon Kim, Do Youn Kim, Suok Woo Lee
  • Patent number: 6242515
    Abstract: The present invention relates to the use of compositions comprising at least one aqueous polymer dispersion wherein the polymer has carbonyl or oxirane groups (component a)) and at least one compound with at least two NH2 groups per molecule as sealing or coating compositions, especially for substrates with a hydrophobic surface. The present invention further relates to coating compositions containing such binder formulations.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: June 5, 2001
    Assignee: BASF Aktiengesellschaft
    Inventors: Cheng-Le Zhao, Eckehardt Wistuba, Joachim Roser, Paul Fitzgerald, Jan Spitzer
  • Patent number: 6235816
    Abstract: A biologically degradable polymer mixture containing at least one biopolymer made from renewable raw materials and a polymer selected from the following materials: an aromatic polyester; a polyester-copolymer with both aliphatic and aromatic blocks; a polyesteramide; a polyglycol; a polyester urethane; and/or mixtures of these components. The preferred renewable raw material is starch, more preferably native starch, most preferably native starch that has been predried.
    Type: Grant
    Filed: October 27, 1999
    Date of Patent: May 22, 2001
    Assignee: Biotec Biologische Naturverpackungen GmbH
    Inventors: Jurgen Lorcks, Winfried Pommeranz, Harald Schmidt
  • Patent number: 6235826
    Abstract: Coating agent for producing an electric insulating coating on an electro steel sheet with good punching quality, weldability, annealing stability and high insulation resistance. Said agent comprises a metal organic and an organic film-forming agent and, optionally, chemically inert inorganic pigments and/or filler and other common additives such as antifoaming agents, leveling agents, catalyzers and the like.
    Type: Grant
    Filed: May 27, 1999
    Date of Patent: May 22, 2001
    Assignee: Herberts Austria GmbH
    Inventor: Michael Wimmer
  • Patent number: 6194513
    Abstract: The present invention is directed to a tintable coating composition, comprising an admixture of (A) about 2 to about 80 wt % of a carboxylated urethane polymer mixture made from 2,6-hexanediol and 4,4-methylenebis (cyclohexylisocyanate); (B) about 5 to about 65 wt % of a hydroxylated methylmethacrylate acrylic polymer; (C) about 0.2 to about 10 wt % of an epoxylated silane cross-linking agent; and (D) optionally, about 0.5 wt % to about 25 wt % of a solvent; all percentages based on the total weight of the coating composition. The coating composition of the present invention may be used as a clear coating, or may include a decorative component such as dyes, pigments, colorants, metal flakes, metal powders, glass flakes, glass powders, and combinations thereof, that add a decorative or colored characteristic to the disclosed coating composition.
    Type: Grant
    Filed: September 22, 1999
    Date of Patent: February 27, 2001
    Assignee: Olin Corporation
    Inventor: Efraim Sagiv
  • Patent number: 6184283
    Abstract: A rubber composition for treads which contains silica and has a low electric resistance and further well-balanced characteristics such as a low rolling resistance, abrasion resistance and good wet performance can be obtained. The rubber composition comprises 40 to 90 parts by weight of silica and 5 to 40 parts by weight of diester of adipic acid based on 100 parts by weight of a diene rubber.
    Type: Grant
    Filed: December 21, 1998
    Date of Patent: February 6, 2001
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Masato Komatsuki, Tetsuya Kunisawa, Isamu Tsumori
  • Patent number: 6172159
    Abstract: A water-reducible polyester resin for use in producing urethane coatings comprises the reaction product of: a) hexahydrophthalic anhydride, trimellitic anhydride or phthalic anhydride; b) 1,4-cyclohexane dimethanol or trimethylol propane or mixtures thereof; and c) a polyethylene glycol selected from the group consisting of polyethylene glycols, methoxy polyethylene glycols and trifunctional polyethylene glycols having a molecular weight no greater than approximately 1050; the reaction product having a functionality between approximately 2 and 2.6. Another water-reducible polyester resin comprises the same components and a specified nonionic surfactant. Urethane coatings containing such polyester resins and a diisocyanate are also disclosed.
    Type: Grant
    Filed: January 18, 2000
    Date of Patent: January 9, 2001
    Assignee: Accures Corporation
    Inventors: Robert J. Gaal, Jr., Roger W. Heitland
  • Patent number: 6162849
    Abstract: This invention relates to a thermally conductive moldable polymer blend comprising a thermoplastic polymer having a tensile at yield of at least 10,000 psi; at least 60% by weight of a mixture of boron nitride powders having an average particle size of at least 50 microns; and a coupling agent. The composition displays a thermal conductivity of at least about 15 W/m.degree. K and it is capable of being molded using high speed molding techniques such as injection molding.
    Type: Grant
    Filed: January 11, 1999
    Date of Patent: December 19, 2000
    Assignee: Ferro Corporation
    Inventors: Qizhuo Zhuo, Ronald M. Harris, Dennis C. Skovran, Leo F. Lightner, Michael S. Randall, Vernon E. Stygar
  • Patent number: 6153672
    Abstract: A process for preparing a tris-lactam crosslinking agent, tris-pyrrolidonyl triazine, from N,N',N"-tris(4-chlorobutyryl)melamine by treatment of the chlorobutyryl derivative with a base such as sodium or potassium carbonate to effect intramolecular cyclization to the tris-lactam. A curable composition comprised of tris-pyrrolidonyl triazine as the crosslinking agent and a hydroxyfunctional or aminofunctional material as a resin. Thick films with no pinholes are prepared from the curable compositions using powder coating techniques.
    Type: Grant
    Filed: January 7, 1993
    Date of Patent: November 28, 2000
    Assignee: Cytec Technology Corp.
    Inventors: Ram B. Gupta, Robert G. Lees
  • Patent number: 6121370
    Abstract: Color recording liquid which comprises, in combination, (a) an aqueous, black-colored recording liquid and (b) at least one aqueous, colored recording liquid which has other hue than black, in which said liquid (b), when applied to a recording medium, can be fixed in said recording medium within a shorter time than the time required when said liquid (a) is fixed in the same recording medium, and either or both of said liquid (a) and said liquid (b) are a recording liquid which comprises water having dispersed therein a coloring material consisting of particles of colored, ionic group-containing resin. Using the color recording liquid, it becomes possible to obtain high quality black recording without causing blurring of color, along with high quality color recording having no bleeding of color in a borderline between two adjacent color recording areas of different hues.
    Type: Grant
    Filed: October 9, 1997
    Date of Patent: September 19, 2000
    Assignee: Fujitsu Limited
    Inventors: Mitsuo Ozaki, Shigeharu Suzuki, Shino Tokuyo, Hiroo Ueda
  • Patent number: 6117928
    Abstract: The invention relates to polylactide films the mechanical properties of which, in particular bursting strength, elongation and tearing strength, have been improved by adding to the polymer certain plasticizers. These plasticizers are preferably glycerol esters.
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: September 12, 2000
    Assignee: Neste Oy
    Inventors: Elina Hiltunen, Johan-Fredrik Selin, Maria Skog
  • Patent number: 6107369
    Abstract: A process for preparing a tris-lactam crosslinking agent, tris-pyrrolidonyl triazine, from N,N',N"-tris(4-chlorobutyryl)melamine by treatment of the chlorobutyryl derivative with a base such as sodium or potassium carbonate to effect intramolecular cyclization to the tris-lactam. A curable composition comprised of tris-pyrrolidonyl triazine as the crosslinking agent and a hydroxyfunctional or aminofunctinoal material as a resin. Thick films with no pinholes are prepared from the curable compositions using powder coating techniques.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: August 22, 2000
    Assignee: Cytec Technology Corp.
    Inventors: R. B. Gupta, Robert G. Lees
  • Patent number: 6103797
    Abstract: Thermoplastic molding compositions compriseA) from 30 to 97% by weight of a polyester,B) from 1 to 30% by weight of melamine cyanurate,C) from 1 to 30% by weight of at least one phosphorus-containing flame retardant which contains phosphorus in the valence state -1, -2 or -3,D) from 0 to 60% by weight of other additives and processing aids,where the total of the percentages by weight of components A) to D) is 100%.
    Type: Grant
    Filed: April 14, 1999
    Date of Patent: August 15, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Martin Klatt, Brigitte Gareiss, Motonori Yamamoto
  • Patent number: 6100320
    Abstract: In a process for producing a profile by profile extrusion of a thermoplastic resin, a melt of the thermoplastic resin is extruded through a die to form the profile. The process is improved by utilizing a thermoplastic resin having a composition of from about 99.95 to about 98.0 weight percent amorphous or semicrystalline polyester and from about 0.05 to about 2.0 weight percent of a zinc salt of an organic acid. The improvement of the process is either by increasing speed or decreasing temperature of a profile extrusion process already operating at a maximum speed and/or temperature with experiencing melt fracture. When melt fracture is present in the profile extrusion process, a method for reducing melt fracture in a profile is accomplished by combining from about 99.95 to about 98.0 weight percent amorphous or semicrystalline polyester and from about 0.05 to about 2.
    Type: Grant
    Filed: March 24, 1999
    Date of Patent: August 8, 2000
    Assignee: Eastman Chemical Company
    Inventors: Daniel Christopher Cobb, James Wilson Mercer, Jr.
  • Patent number: 6093759
    Abstract: Flame-retardant thermoplastic molding compositions compriseA) from 5 to 99% by weight of a thermoplastic polymer,B) from 0.1 to 50% by weight of a phosphazene of the general formula I(PN.sub.2-x H.sub.1-y).sub.z Iwhere the numerical values of x, y and z, independently of one another, are as follows:1>x>0.051>y>0.05z>1, andC) from 0 to 70% by weight of other additives and processing aids,where the total of the percentages by weight of components A) to C) is 100%.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: July 25, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Brigitte Gareiss, Hans-Michael Schneider, Martin Weber
  • Patent number: 6090898
    Abstract: A polyester film, comprising a non-liquid crystal polyester (A) and a copolyester (B) containing mesogen groups in the main chain to form a phase separated structure in the non-liquid crystal polyester (A), and the dispersed domains of the copolyester (B), having forms to satisfy the following formulae (1) and (2):0.02<(I/J)<50 (1)K<1/2.times.S[I, J] (2)where I, J and K are form indicators expressing the average form of the plurality of domains existing in the film: I is the average length of the dispersed domains of the copolyester (B) in the machine direction of the film; J, that in the transverse direction; and K, that in the normal direction: and S is a function for selecting the shorter value of the lengths I and J; if I>J, S[I, J] means J, and if I<J, S[I, J] means I. If the copolyester (B) has such geometrical forms, the polyester film obtained is excellent in rigidity, high toughness, heat shrinkage, clarity, surface properties, long-time thermostability, electric properties, etc.
    Type: Grant
    Filed: February 24, 1998
    Date of Patent: July 18, 2000
    Assignee: Toray Industries, Inc.
    Inventors: Tetsuya Tsunekawa, Masaaki Kotoura, Kenji Tsunashima
  • Patent number: 6051646
    Abstract: Abrasive articles comprising a cured thermosetting binder and abrasive grains. The binder is prepared with a poly-functional molecule which contains at least two functional groups selected from the group consisting of carboxyl, anhydride and amine, and a (hydroxyalkyl)urea crosslinking agent containing a single urea group, at least two hydroxyl groups, and have at least two carbon atoms disposed between the urea group and each of the hydroxyl groups. The abrasive articles comprise bonded, nonwoven or coated abrasive articles.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: April 18, 2000
    Assignee: National Starch and Chemical Investment Holding Corporation
    Inventors: David R. Nass, Andrew J. Kielbania, Jr., Sharon P. Lee
  • Patent number: 6022491
    Abstract: A thermotropic liquid crystalline polymer constituted of repeat units derived from hydroquinone, terephthalic acid, isophthalic acid, 2,6-naphthalene dicarboxylic acid, and 4-hydroxybenzoic acid, all present in defined amounts. Such polymer has excellent physical properties and high temperature stability. It is suitable as a molding resin.
    Type: Grant
    Filed: June 25, 1998
    Date of Patent: February 8, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Michael Robert Samuels, Marion Glen Waggoner
  • Patent number: 6020420
    Abstract: This invention provides crystalline, water-dispersible polyesters comprising residues of 4,4'-biphenyl dicarboxylic acid. The polyesters comprise residues of 4,4'-biphenyl dicarboxylic acid, at least one difunctional sulfomonomer in an amount sufficient to provide water dispersibility to the polyester, and a glycol or a mixture of glycols. The polyesters of the invention are useful in ink and adhesive compositions.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: February 1, 2000
    Assignee: Eastman Chemical Company
    Inventor: Scott Ellery George
  • Patent number: 6015551
    Abstract: The disclosure relates to a copolymer obtainable by radically initiated polymerization of the following: A) 70-99.9 wt. % an olefinically unsaturated C.sub.3 -C.sub.5 monocarboxylic acid, an olefinically unsaturated C.sub.4 -C.sub.8 dicarboxylic acid or its anhydride, or a mixture of such carboxylic acids; with B) 0.1-30 wt. % one or more multiply olefinically unsaturated carboxylic acid derivatives of formula (I)Z--Y--(CHR.sup.3 --CH.sub.2 --X).sub.n --R.sup.4 (I)in which Z is a vinyl or allyl group or structure (a), ##STR1## R.sup.1, R.sup.2 are hydrogen or methyl, R.sup.3 is hydrogen, methyl or ethyl, R.sup.4 is a singly or multiply olefinically unsaturated alkenyl or cycloalkenyl group or a singly or doubly olefinically unsaturated arylalkylene group, X is oxygen or NH, Y is oxygen, NH or N-alkyl, n is a number between 0 and 50; and C) 0-29.9 wt. % other copolymerizable monomers. The proposed copolymer can be used as a thickener or dispergent for aqueous systems.
    Type: Grant
    Filed: June 2, 1998
    Date of Patent: January 18, 2000
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Schade, Hans-Ulrich Wekel, Axel Sanner, Karin Sperling
  • Patent number: 6013696
    Abstract: A method for manufacturing a heat resistant friction material which comprises forming pores in the surface of the friction material, the pores being formed with a controlled pore size, depth, pattern, orientation and distribution.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: January 11, 2000
    Assignee: The Mead Corporation
    Inventors: Larry Oather Hill, Richard S. Goodlin, Christopher Roy Mathews, Mahendra Mehta
  • Patent number: 6011111
    Abstract: A thermoplastic composite is prepared by applying a hydroxy-phenoxyether polymer onto the surface of reinforcing fibers or by the in-situ polymerization of mixtures of diepoxides and difunctional species in the presence of reinforcing fibers. The composites can be molded into shaped articles useful for structural materials and parts by conventional thermoforming or other fabrication techniques.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: January 4, 2000
    Assignee: The Dow Chemical Company
    Inventors: David J. Brennan, Jerry E. White, Daryl R. Calhoun
  • Patent number: 6008291
    Abstract: Viscosity-stabilized aqueous polyester dispersions comprising an acid-functional polyester resin a, neutralizing agent b for the polyester resin a, the amount of neutralizing agent being sufficient to convert from 10 to 200% of the amount of substance of acid groups in the polyester resin a into salt groups by means of the amount of neutralizing agents added, the neutralizing agents being selected from ammonia and organic amines and also alkali metal hydroxides and alkaline earth metal hydroxides; if desired, an organic auxiliary solvent, silica in an amount such that the mass of SiO.sub.2 is from 0.1 to 50% of the mass of the polyester resin, and water. The dispersions are useful in coating compositions.
    Type: Grant
    Filed: November 13, 1998
    Date of Patent: December 28, 1999
    Assignee: Vianova Resins AG
    Inventors: Manfred Weinberger, Johann Billiani
  • Patent number: 6008182
    Abstract: A process for preventing dye redeposition during the washing of a dyed fabric or garment made from natural fibers, which process incorporates as a dye redeposition inhibiting agent, a water-soluble or water-dispersible polyester resin composition comprising a reaction product of 20%-50% by weight of terephthalate polymer or waste terephthalate polymer, 10-40% by weight of at least one glycol and 5-25% by weight of at least one oxyalkylated polyol.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: December 28, 1999
    Assignee: Seydel Research, Inc.
    Inventors: Robert Keith Salsman, Brian J. Clark
  • Patent number: 5998526
    Abstract: Salts of polyaspartic acids are used as milling agents for the milling of mineral materials to obtain aqueous suspensions of finely divided mineral materials which are pumpable and non-sedimenting, and have high concentrations of mineral materials which are useful in papermaking and in paper coating.
    Type: Grant
    Filed: February 12, 1998
    Date of Patent: December 7, 1999
    Assignee: Coatex S.A.
    Inventors: Jean-Marc Suau, Christian Jacquemet, Jacques Mongoin
  • Patent number: 5989453
    Abstract: A process for the manufacture of pigments comprising a colored composition incorporated in a polycondensation resin, wherein the reactants for the formation of the polycondensation resin and the colored composition are introduced continuously into an extruder, preferably at a temperature of between 100.degree. C. and 280.degree. C., the mixture is caused to travel forward in the extruder, at the end of reaction the mixture is withdrawn continuously from the extruder, and is deposited continuously onto a conveyor belt, broken up into thermoset flakes, and cooled, the conveyor belt having means for cooling and means for detaching the flakes from the belt. The process is particularly suitable for the preparation of fluorescence pigments. Also disclosed are compositions comprising diketo-pyrrolo-pyrrole colorants and certain polyester or polyamide resins as well as a process for the preparation of the compositions.
    Type: Grant
    Filed: March 7, 1994
    Date of Patent: November 23, 1999
    Assignees: Societe Nouvelle de Chimie Industrielle S.A., Ciba Specialty Chemicals Holding, Inc.
    Inventors: Michel Jean Marcq, Martin Tanner
  • Patent number: 5985988
    Abstract: A process for coloration of a substrate comprising printing an ink onto the substrate using a thermal ink jet printer, characterised in that the ink comprises water and a water-dissipatable polyester dyed using a disperse dye or solvent soluble dye. An ink comprising a water-dissipatable polyester dyed using a disperse dye or solvent dye and an aqueous medium.
    Type: Grant
    Filed: February 10, 1998
    Date of Patent: November 16, 1999
    Assignee: Zeneca Limited
    Inventor: David John Hodge
  • Patent number: 5977269
    Abstract: The present invention provides polyester/vinyl dioxolane based coating compositions containing no or essentially no volatile organic components. Oligomers for forming the coating compositions of the present invention are vinyl dioxolane end-capped polyester oligomers.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: November 2, 1999
    Assignee: Foster-Miller, Inc.
    Inventors: Robert F. Kovar, William E. Dorogy, Jr., Brian P. Farrell, Nelson Landrau
  • Patent number: 5969020
    Abstract: Highly uniform microporous foam suitable for medical applications and methods for preparing these foams. The highly uniform microporous foams are of controlled pore size that may be utilized in a variety of applications. In preparing the foams, an organic crystalline polymer is melted and combined with a selected solid crystalline fugitive compound to produce a substantially isotropic solution. The solution is cooled under controlled conditions, which foster solid-solid phase separation by the simultaneous crystallization of the fugitive compound and the polymer, to produce a foam precursor containing the solidified fugitive compound dispersed through a matrix of the organic polymer. Crystals of fugitive compound are then removed by solvent extraction and/or sublimation, or like process to produce microcellular foams having a continuous, open-cell structure.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: October 19, 1999
    Assignee: Poly-Med, Inc.
    Inventors: Shalaby W. Shalaby, Susan L. Roweton
  • Patent number: 5948152
    Abstract: This invention relates to liquid complexes of anionic organic dyes with quaternary ammonium compounds which are homogeneous and thus substantially free of unwanted inorganic salts. Of particular interest as quaternary ammonium compounds are those which comprise alkoxylated moieties. Such complexes are formed through ionic bonds formed between the two compounds. The complexes are then removed of substantially all resultant unwanted salt formed from the cations of the dye and the counter ions of the quat so as to obtain an homogeneous liquid colorant which easily disperses within different media and which possess favorable migration and coloring characteristics. This invention also concerns methods of making the aforementioned salt-free anionic dye/quat complexes as well as methods of utilizing such complexes for dyeing thermoplastic and thermoset compositions and the incorporation of such complexes within aqueous and non-aqueous formulations and ink compositions.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: September 7, 1999
    Assignee: Milliken & Company
    Inventors: Xiaodong Edward Zhao, Kaye Cannon Suddeth, Patrick D. Moore, Raj Batlaw
  • Patent number: 5945477
    Abstract: The present invention provides processes for preparing polyesters. The processes include (a) providing a polymerization medium comprising carbon dioxide, (b) contacting a monomer capable of forming a polyester polymer with the polymerization medium, and (c) polymerizing the monomer in the polymerization medium. The processes of the present invention include preparing polyesters by direct esterification polymerization, transesterification polymerization, melt acidolysis polymerization and acid halide polymerization. As a further aspect, the present invention provides a method of separating the polyester produced from the polymerization medium. Polyester polymers prepared according to the methods of the present invention are also provided.
    Type: Grant
    Filed: September 26, 1996
    Date of Patent: August 31, 1999
    Assignee: The University of North Carolina at Chapel Hill
    Inventors: Joseph M. DeSimone, Gerhard Maier
  • Patent number: 5938828
    Abstract: This invention relates to solid complexes of anionic organic dyes with quaternary ammonium compounds which have average molecular weights of below about 900 which are substantially free from unwanted salts. Of particular interest as quaternary ammonium compounds are those which comprise alkoxylated moieties. Such complexes are formed through ionic bonds formed between the two compounds. The complexes are then removed of substantially all resultant unwanted salt formed from the cations of the dye and the counter-ions of the quat so as to obtain a solid dyeing agent which easily disperses within different media and which possess extremely good non-migration and coloring characteristics. This invention also concerns methods of making the aforementioned salt-free solid anionic dye/quat complexes as well as methods of utilizing such complexes for dyeing thermoplastic, thermoset, and wax compositions.
    Type: Grant
    Filed: April 24, 1998
    Date of Patent: August 17, 1999
    Assignee: Milliken & Company
    Inventors: Xiaodong Edward Zhao, Kaye Cannon Suddeth, Robert L. Mahaffey, Jr.
  • Patent number: 5919851
    Abstract: A paint composition comprising, as a leveling agent, 0.01 to 3.0 parts by weight of a polyfluorinated carbon chain-containing compound and 0.01 to 3.0 parts by weight of a silicone oil per 100 parts by weight of a film forming component and being capable of forming a film being excellent in water- and oil-repelling property and stain resistance, and painted articles being excellent in water- and oil-repelling property and stain resistance can be provided.
    Type: Grant
    Filed: April 8, 1997
    Date of Patent: July 6, 1999
    Assignee: Daikin Industries, Ltd.
    Inventors: Seitaro Yamaguchi, Koichiro Ogita, Nobuyuki Tomihashi
  • Patent number: 5914374
    Abstract: A urethanized polyester is claimed which is suitable as an additive for aqueous coating systems, which is obtainable by, in a first reaction stage (A), subjecting(a) from 10 to 45 mol-% of one or more diols,(b) from 5 to 50 mol-% of one or more polyols having at least 3 OH groups, and(c) from 35 to 47 mol-% of one or more aromatic, aliphatic or cycloaliphatic polycarboxylic acids and/or reactive derivatives thereof to a polycondensation reaction in a manner known per se until the reaction mixture has an acid number of from 1 to 10, and, in a reaction stage (B), reacting the resulting reaction product in a manner known per se with an organic polyisocyanate. The urethanized polyester is outstandingly suitable as an additive for aqueous coating materials in order to improve the rheological stabilization of coating materials.
    Type: Grant
    Filed: February 20, 1997
    Date of Patent: June 22, 1999
    Assignee: BASF Coatings AG
    Inventors: Vera Block, Harald Borgholte, Uwe Meisenburg, Heinz-Peter Rink, Ludwig Moorkamp
  • Patent number: 5877235
    Abstract: The aqueous ink of the present invention comprises a suspension of a polymer, preferably a polyester or a polyester polyamide, having adsorbed a dye or a pigment, wherein the surface tension (.gamma.) and the viscosity (.eta.) of the ink at 20.degree. C. and the average particle size (d) of the suspended particles satisfy the following inequality (1):0.1.ltoreq..gamma..multidot..eta..multidot.d.ltoreq.11 (1)wherein the units of the parameters .gamma., .eta. and d are dyne/cm, cps, and .mu.m, respectively.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: March 2, 1999
    Assignee: Kao Corporation
    Inventors: Tadashi Sakuma, Tetsuya Ueno, Kuniyasu Kawabe
  • Patent number: 5869567
    Abstract: A polyester resin aqueous dispersion which provides a coating film having excellent processability, water resistance, corrosion resistance, chemical resistance, weather resistance and adhesion to various substrates, and which also has markedly excellent storage stability even at a high solids concentration. The polyester resin aqueous dispersion substantially comprises a specific polyester resin, a basic compound, an amphipathic organic solvent capable of plasticizing the polyester resin, and a compound having a protective colloid action. Furthermore, fine particles of the polyester resin are homogeneously dispersed in an aqueous medium and in a specific dispersed state.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: February 9, 1999
    Assignee: Unitika Ltd.
    Inventors: Eiji Fujita, Tetsuya Miyagawa, Kenjin Shiba, Jinhua Xu, Kiyomi Hata
  • Patent number: 5859152
    Abstract: Disclosed is a water-dissipatable or dispersible adhesive composition that is useful in forming paper articles and other products that can be recycled through repulping in both neutral and alkaline media. The water-dispersible adhesive composition is preferably a hot melt adhesive that is a low molecular weight, branched copolyester containing a sulfomonomer. Additional utility for the invention resides in the manufacture of recyclable articles where insolubility in body fluids combined with solubility in tap water are required.
    Type: Grant
    Filed: September 12, 1997
    Date of Patent: January 12, 1999
    Assignee: Eastman Chemical Company
    Inventors: Richard A. Miller, Mark A. Montgomery
  • Patent number: 5856401
    Abstract: A method wherein polyesters are prepared under mild conditions by directly condensing hydroxycarboxylic acids or mixtures of polyfunctional alcohols and carboxylic acids in hydrophobic media using heterogeneous catalysts that can form a hydrophilic phase. The systems are inverse emulsions, inverse microemulsions and solid-in-liquid dispersions.
    Type: Grant
    Filed: January 27, 1998
    Date of Patent: January 5, 1999
    Assignee: Saam Associates
    Inventor: John C. Saam
  • Patent number: 5834547
    Abstract: A molding compound composition of the present invention comprises a resin composition, for example, unsaturated polyester, a succinic acid derivative, and a thickening agent such as magnesium oxide, and the moisture content thereof is adjusted in a range of from 0.1 to 0.45 percent by weight. A molding compound comprises the molding compound composition and reinforced fibers such as glass fibers, and the moisture content thereof is adjusted to be in a range of from 0.1 percent to 0.4 percent by weight. As shown in FIG. 1, the molding compound composition has excellent viscosity characteristics since the initial thickening action due to the thickering agent is restrained. Although the viscosity after thickened is lower than that of a conventional composition, the stickiness of the surface of the molding compound composition is reduced.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: November 10, 1998
    Assignee: Nippon Shokubai Co., Ltd.
    Inventors: Kouji Takabatake, Katsura Hayashi, Yoshinori Utikoshi
  • Patent number: 5820982
    Abstract: Water-soluble or water-dispersible and curable polyester resins are suitable as binders in various applications. The resins are reaction products of polyterephthalate, sulfoisophthalates, polyols, polyacids, end acids and crosslinker agents. Waste terephthalates can be utilized. The preferred polyol is pentaerythritol. The resins can also be used as dye levelling agents when dyeing synthetic fibers.
    Type: Grant
    Filed: December 3, 1996
    Date of Patent: October 13, 1998
    Assignee: Seydel Companies, Inc.
    Inventor: Robert Keith Salsman
  • Patent number: 5804634
    Abstract: Disclosed herein is a liquid crystalline resin compound which includes about 100 pbw of liquid crystalline resin and about 5-200 pbw of inorganic filler, the liquid crystalline resin being composed of about 99.5-50 wt % of partially aromatic liquid crystalline polyester resin and about 0.5-50 wt % of wholly aromatic liquid crystalline polyester resin, and the inorganic filler having an average aspect ratio in the range of 3 to 25. Also disclosed is a molded article of liquid crystalline resin obtained by molding from the liquid crystalline resin compound. The resin compound is superior in flowability and the molded article has good mechanical properties, especially balanced rigidity and toughness.
    Type: Grant
    Filed: December 10, 1996
    Date of Patent: September 8, 1998
    Assignee: Toray Industries, Inc.
    Inventors: Hideyuki Umetsu, Kiyokazu Nakamura, Toshihide Inoue, Miki Sakai, Toshio Kurematsu
  • Patent number: 5798432
    Abstract: Liquid crystalline polymers that are made from 4-hydroxybenzoic acid, 2,6-naphthalenedicarboxylic acid, terephthalic acid, hydroquinone, and N-acetyl-4-aminophenol by heating the monomers in the presence of acetic anhydride are more easily synthesized in high molecular weight if isophthalic acid is also included as a monomer at a level of about 0.5 mole % to about 10 mole %.
    Type: Grant
    Filed: March 22, 1996
    Date of Patent: August 25, 1998
    Assignee: Hoechst Celanese Corp.
    Inventors: Cherylyn Lee, Vincent J. Provino, H. Clay Linstid, III
  • Patent number: 5780539
    Abstract: A polyester polymer containing micro glass fibers having an aspect ratio of greater than 1000, preferably from about 2000 to about 5000. Those micro glass fibers having these aspect ratios, preferably with mean fiber diameters of 1 microns or less, act as excellent nucleating agents to promote crystallization of the polymer melt during its cooling phase, improve the rheological behavior of the melt, reduce the crystalline half time during cooling phases, and are acceptable in polyester molded or thermoformed products which come into contact with food or beverage.
    Type: Grant
    Filed: May 23, 1997
    Date of Patent: July 14, 1998
    Assignee: Shell Oil Company
    Inventor: Deborah Ann Snell Tung
  • Patent number: 5767223
    Abstract: A thermotropic liquid crystal polyester and a sealing material used for electric and electronic parts prepared from the thermotropic liquid crystal polyester, which polyester can be molded at low temperatures, while which polyester has heat resistance capable of well withstanding the process such as soldering. The thermotropic liquid crystal polyester is characterized in that it contains five kinds of specified repeating structural units in the respective ratios and it meets specific conditions of an intrinsic viscosity or the temperature of complete melting and storage elastic modulus.
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: June 16, 1998
    Assignee: Nippon Petrochemicals Company, Limited
    Inventors: Yoshikuni Yamada, Satoshi Murouchi, Toshitaka Kobayashi
  • Patent number: 5739176
    Abstract: A biodegradable polymer is provided for use in providing syringeable, in-situ forming, solid biodegradable implants for animals. The polymer is placed into the animal in liquid form and cures to form the implant in-situ. A thermoplastic system to form said implant comprises the steps of dissolving a non-reactive polymer in biocompatible solvent to form a liquid, placing the liquid within the animal, and allowing the solvent to dissipate to produce the implant. An alternative, thermosetting system comprises mixing together effective amounts of a liquid acrylic ester terminated, biodegradable prepolymer and a curing agent, placing the liquid mixture within an animal and allowing the prepolymer to cure to form the implant. Both systems provide a syringeable, solid biodegradable delivery system by the addition of an effective level of biologically active agent to the liquid before injection into the body.
    Type: Grant
    Filed: March 18, 1994
    Date of Patent: April 14, 1998
    Assignee: Atrix Laboratories, Inc.
    Inventors: Richard L. Dunn, James P. English, Donald R. Cowsar, David D. Vanderbilt
  • Patent number: 5726236
    Abstract: The impact strength of a thermoplastic molding composition containing aromatic polycarbonate resin and a copolymer is improved upon the incorporation therewith of a particular silicone rubber powder. The silicone rubber powder, added at a level of about 3 to 25 percent, contains a mixture of (a) a polydiorganosiloxane and (b) finely divided silica filler.
    Type: Grant
    Filed: July 6, 1995
    Date of Patent: March 10, 1998
    Assignee: Bayer Corporation
    Inventors: James P. Mason, Roger J. White
  • Patent number: 5726277
    Abstract: An adhesive or coating composition comprises a reaction product of terephthalate polymer and mixture of glycols in the presence of a glycolysis catalyst. The reaction product is further reacted with a difunctional organic acid. The recycled polymer which is formulated as adhesive or binder can be used in many fields.
    Type: Grant
    Filed: February 2, 1994
    Date of Patent: March 10, 1998
    Assignee: Seydel Companies, Inc.
    Inventor: Robert Keith Salsman