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5856424 |
Process for making polyesters containing low concentrations of diethylene glycol
The present invention relates to a process for producing a high molecular weight polyester having less than about 0.5 weight % diethylene glycol comprising adding at least one carbonate compound to...
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5854376 |
Aliphatic ester-amide copolymer resins
A composition of an aliphatic ester-amide copolymer which is soluble in an organic solvent with an LD 50 value (orally administered to a rat) of about 2,000 mg/kg or more.
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5852162 |
Low molecular weight hydroxy functional polyesters for coatings
A polyester composition has a number average molecular weight M n of between about 500 and about 1000, a weight average molecular weight M w of between about 600 and about 2000, a polydispersity...
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5852155 |
Compositions of polyesteramides
Disclosed are polyesteramide resin compositions having amide units of formula (I): ##STR1## and the units of the formula (II): ##STR2## wherein the polyesteramide is substantially devoid of units...
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5852163 |
Process for preparing hydroxy-functionalized polyesters
A process for preparing a thermoplastic hydroxy-functionalized polyesters comprises contacting a dicarboxylic acid or a mixture of dicarboxylic acids with a diepoxide in the presence of a...
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5849859 |
Polyesters
A biodegradable and biocompatible polyester comprising (C 3 -10) alkylene carbonic acid ester units, each alkylene group being a C 3 -alkylene group having 1 oxy substituent or a (C 4 -10)...
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5849849 |
Polyesters production process
An atmospheric pressure process for the continuous production of polyester is disclosed wherein a melt of bis(3-hydroxy propyl) terephthalate, or its low molecular oligomers, obtained by...
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5847070 |
Hydroxy ethyl bibenzoate
New compounds including bis-β-hydroxy ethyl bibenzoate containing less than 2.5%, and preferably less than 1%, diethylene glycol and a process for the production of the bis-β-hydroxy ethyl...
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5847057 |
Heat-curable coating compounds
The invention relates to heat-curable coating compounds containing a carboxyl-functional polyester produced by a condensation reaction from aliphatic and/or cycloaliphatic and/or aromatic...
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5844066 |
Process for the preparation of lactic acid-based polyester
The present invention provides a process for the preparation of a lactic acid-based polyester having an excellent moldability, storage stability and biodegradability which has a less residual...
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5843573 |
Polyester resin composition
A polyester resin composition comprises: an aliphatic polyester having a number-average molecular weight (Mn) in a range of 10,000 to 100,000; and a crystalline nucleating agent, wherein the...
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5843541 |
Liquid crystalline copoly(ester-imide)s and a process for the preparation thereof
The present invention relates to liquid crystalline copoly(ester-imides) and a process for the preparation thereof. In particular, the invention relates to liquid crystalline copoly(esteri-imides)...
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5840827 |
Low molecular weight hydroxy functional polyesters for coatings
The polyester composition of this invention comprises a polyester oligomer having a number average molecular weight of from about 650 to about 950, a weight average molecular weight of from about...
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5840829 |
Plateable structural adhesive for cyanate ester composites
An adhesive is provided for bonding cyanate ester composite parts together which is also plateable with metal once chemically etched. The adhesive comprises a polymeric matrix and a filler of...
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5837786 |
Process for producing polyester
A process for producing a polyester of uniform quality, in which a slurry of powdery aromatic dicarboxylic acid in a liquid diol is prepared and the resulting slurry is processed through an...
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5834581 |
Process for making polyimide-polyamic ester copolymers
A process for making polyimide-polyamic ester copolymer composition comprising reacting at least one diamine, a pyromellitic diacid diester compound; at least one other tetracarboxylic diacid...
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5834118 |
Radiation curable resins comprising hyperbranched polyesters
Hyperbranched polyester of a polyol with 3 to 10 reactive hydroxyl groups, preferably of equivalent reactivity, and an aromatic polycarboxylic anhydride with 2 to 4 carboxyl groups, preferably 3...
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5830980 |
Electrophotographic photoconductor, aromatic polycarbonate resin for use in the same, and method of producing the aromatic polycarbonate resin
An electrophotographic photoconductor includes an electroconductive support, and a photoconductive layer formed thereon, containing a novel aromatic polycarbonate resin having a repeat unit of...
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RE35939 |
Polyester resin, compositions thereof and sealant made therefrom
A polyester resin (A) having branched chain, a reduction viscosity (η sp/c) of not less than 0.7, and a Z average molecular weight (Mz) relative to standard polystyrene of not less than 250×10 3 ...
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5824398 |
Plasticized polyester for shrink film applications
This invention relates to polyester/plasticizer blends which are useful as heat-shrinkable films or sheets in low temperature shrink packaging applications. The heat-shrinkable films or sheets...
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5821320 |
Method of producing the aromatic polyimide
18.4 grams of 4,4'-(hexafluoroisopropyridine)diphthalic acid dianhydride and 7.5 grams of 1,4-phenylenediamine dihydrochloride are mixed in a solvent consisting of 80 ml of N-methyl-2-pyrrolidone...
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5820982 |
Sulfoaryl modified water-soluble or water-dispersible resins from polyethylene terephthalate or terephthalates
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,...
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5821554 |
Process for preparing polyurethane foam
A polyester-polyol prepared by polycondensation of an acid component comprising terephthalic acid and adipic acid, and a polyhydric alcohol component, wherein the molar ratio of the terephthalic...
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5817729 |
Vapor precipitation of polymers from solvent polymer blends by azeotropic spray drying
A process for removing contaminating solvents from solutions containing solid solutes comprising contacting a co-solvent that forms an azeotrope with the contaminating solvent forming a mixture...
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5814282 |
High surface intermeshing profile reactor
A polycondensation reactor for polyesters, polyamides or polyarylates, for example, in which a low viscosity material is introduced into the reactor and a relative high viscosity polymer exits the...
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5811513 |
Process for producing polyethylene naphthalate
In the production of polyethylene naphthalate of the present invention, the esterification reaction between naphthalenedicarboxylic acid and ethylene glycol is conducted while causing water to be...
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5811496 |
Process for polymerization of polyester oligomers
This invention is directed to an improved process for producing a polyester oligomer. The process employs a pipeline reactor, having at least two stages, in which the degree of polymerization of an...
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5811507 |
Polyesterimides for use in linear and/or non-linear optics, and one method for preparing same
The present invention relates to a new polyesterimide of the type containing ester repeat functional groups E=--CO--O--, imide repeat functional groups I: ##STR1## and at least one chromophore,...
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5798434 |
Monomer mixture and method for the preparation thereof
A monomer mixture having a hydroxyl value ranging from 0 to 134 KOH mg/g, obtainable by polymerizing a mixed raw material of an unsaturated compound selected from the group consisting of fatty...
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5798183 |
Packaging material having excellent flavor retention
The present invention is a packaging material composed of a thermoplastic polyester as a constituent material. By adjusting the contents of a dibasic carboxylic acid and its oligomer derived from...
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5789500 |
Process for preparing residues containing dihydroxy compounds
A process for working up dihydroxy compound residues from the preparation of polyesters by a) a first step of (trans)esterifying a dicarboxylic acid or its esters or ester-forming derivatives...
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5789527 |
Polyester resin for use in toner binder and process for producing the same
Provided are a polyester resin for use in a toner binder which is excellent in terms of offset resistance and low-temperature fixability, which keeps triboelectric charge stability even in an...
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5786071 |
Method of preparation of polyquinolines
New polyquinoline polymers are provided, as well as new methods for preparing the polyquinoline polymers using a novel combination of monomers. The polyquinoline polymers comprise repeat units...
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5786318 |
Soil Release Polymers and detergent compositions containing them
A water-soluble copolyester comprising units of a polyglycol or capped polyglycol (for example, polyethylene glycol or polyethylene glycol methyl ether), an aromatic dicarboxylic acid (for example,...
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5786443 |
Process of making polyester prepolymer
A continuous process for preparing polyester prepolymer comprising the steps of esterifying a diacid with a diol, reacting the esterified product with additional diol, and passing the product...
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5786442 |
Polyester mixture, its preparation and use
A polyester mixture is prepared composed of a diol, a dicarboxylic acid and optionally a monofunctional compound as a chain stopper, in which there is less than 3 wt. % of compounds having a...
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5783635 |
Unsaturated polyester resin composition
An unsaturated polyester resin composition which comprises 100 parts by weight of a resin mixture comprising 25 to 80 parts by weight of an unsaturated polyester, 20 to 60 parts by weight of a...
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5780578 |
Synthetic polymer exhibiting hydrolytic activity, its preparation and use for conversion of esters and amides to the corresponding alcohol and amine
The invention provides a polymer composed of vinyl monomers bearing imidazole, hydroxyl and carboxyl groups arranged in proximity to each other, that exhibits hydrolytic activity similar to serine...
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5780574 |
Flame-retardant polyester resin composition
To provide a flame-retardant polyester resin composition excellent in moldability and capable of keeping its excellent contact properties stable for a long period of time when it is molded into an...
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5780520 |
Leaching contaminants from post-consumer for reuse in food-contact applications
A novel technique to treat post-consumer polyester for reuse in food-contact applications is described. The process comprises contacting contaminated post consumer polyester flake with at least one...
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5780159 |
Plastic optical components
The invention concerns optical elements made from polycyanurate resins, wh exhibit a refractive index, at 633 nm, in the range from 1.45 to 1.70 and an optical absorption, at 1.3 or 1.55 μm, in...
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5780556 |
Thermoset coating compositions having improved hardness and curing properties
The present invention provides an amino curable polyester oligomer composition having low viscosity and a narrow molecular weight distribution comprising one or a mixture of oligomers (a) and (b):...
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5777046 |
Amphiphilic polyesters, preparation thereof, and use thereof in laundry detergents
Amphiphilic polyesters containing (a) ester units derived from polyalkylene glycols having a molecular weight of from 500 to 7500 and aliphatic dicarboxylic acids and/or...
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5777065 |
Polyesters from dilute dicyclopentadiene
Polyesters having a reduced gel content may be made from dicyclopentadiene having a purity of less than about 90% by incorporating from 30 to 200 ppm of an aromatic inhibitor into the...
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5773563 |
Absorbable ε-caprolactone polymers
Crystane, low melting ε-Caprolactone polymers which undergo accelerated hydrolysis, and their use as lubricant coatings and/or as coatings containing bioactive agents, as carriers of viable cells,...
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5773554 |
Copolyesters based on 1,4-cyclohexanedimethanol having improved stability
This invention relates to a method of melt processing a copolyester having a moisture content of 0.02 weight % or more comprising: (a) one or more dicarboxylic acids, and (b) a glycol...
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5770653 |
Resin composition and manufacturing method thereof
A resin composition includes a dicyclopentenyl-group containing unsaturated polyester resin, a phenothiazine derivative (a) and an anion producing compound (b). On the other hand, resin composition...
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5766679 |
Chiral nematic polyesters
Chiral nematic polyesters comprise as alcohol component chiral diol structural units and as acid component dicarboxylic acid residues comprising mesogenic groups. The polyesters are particularly...
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5763098 |
Degradable aliphatic polyester formed products
Formed products such as foams, fabrics for industrial materials, filaments, nonwoven fabrics, composite materials and films which are degradable after use with ease in the natural environment are...
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5763531 |
Preparation of unsaturated polyester resins
Preparation of storage stable, polybutadiene containing, unsaturated polyester resins by heating a mixture containing an unsaturated hydroxyl terminated polybutadiene resin, a saturated anhydride...
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