U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Famous Patents

3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 528/296 - Reactant contains three or more carboxylic acid groups or is derivative thereof


Subclass of Class 528 - Synthetic resins or natural rubbers -- part of the class 520 series
Definition: Subject matter wherein at least one reactant is present
No. of patents: 423
Last issue date: 12/28/2010


1                      
NumberTitleIssue Date
7858733Highly functional, highly branched or hyperbranched polyesters, the production thereof and the use of the same
High-functionality highly branched or hyperbranched polyesters based on di-, tri- or polycarboxylic acids and di-, tri- or polyols, processes for preparing them, and their use. ...
12/28/2010
7358325Sulfonated aromatic copolyesters containing hydroxyalkanoic acid groups and shaped articles produced therefrom
Sulfonated aromatic copolyesters and articles made therefrom, and processes for producing the sulfonated aromatic copolyesters and articles are provided. Articles that can be made from the sulfonated aromatic copolyesters include films, coatings and laminates. Some ...
04/15/2008
7358323Water-soluble flame-retardant polyester resin, resin composition containing the resin, and fiber product treated with the resin composition
A water-soluble, flame retardant polyester resin is obtained by a condensation reaction or a polycondensation reaction of a dicarboxylic-acid component, a glycol component, a water-solubility imparting component and a reactive phosphorus-containing compound such tha...
04/15/2008
7342086Aliphatic polyester polyether copolymer, process for producing the same and aliphatic polyester composition using the copolymer
An aliphatic polyester polyether copolymer is provided having an aliphatic polyester moiety comprising 35 to 50 molar % of an aliphatic diol unit, 35 to 50 molar % of an aliphatic dicarboxylic acid unit and 0 to 30 molar % of an aliphatic oxycarboxylic acid unit and...
03/11/2008
7329720Methods for increasing the mean particle size of 2-hydrocarbyl-3,3-bis(hydroxyaryl)phthalimidines
A method for increasing a mean particle size of a 2-hydrocarbyl-3,3-bis(hydroxyaryl)phthalimidine is provided. The method comprises forming a mixture comprising a feedstream of the 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine, and a solvent composition comprisi...
02/12/2008
7317069Aliphatic polyester and process for producing the same
An object of the present invention is to provide an aliphatic polyester which is produced as a high-molecular-weight one without using a chain extender such as an isocyanate compound or a carbonate compound and is excellent in moldability in injection molding, blow ...
01/08/2008
7264913Antireflective compositions for photoresists
The present invention relates to a novel antireflective coating composition comprising a polymer, a crosslinking agent and an acid generator. The present invention further relates to a process for using the novel composition, particularly at 193 nm. The polymer of t...
09/04/2007
7253251Water soluble thermosetting polyester resin composition and method of preparing the same
A water soluble thermosetting polyester resin composition for undercoating a PCM steel sheet is prepared from about 100 parts by weight of thermosetting polyester resin obtained by condensing polyethylene terephthalate using glycol and polybasic acid, about 5-20 par...
08/07/2007
7253250Simplified method of producing biodegradable aliphatic polyesters
A method of synthesizing biodegradable aliphatic polyesters from one or more aliphatic dicarboxylic acids or diesters of the said acids and one or more linear or branched aliphatic glycols, comprising a first esterification or transesterification step and a second d...
08/07/2007
7250466Rapid curing anaerobic compositions
A curable composition having enhanced cure speed which includes a curable component, a cure system and an additive for enhancing cure speed. The additive includes an alkali metal halide salt and the reaction product of: (a) a polyfunctional isocyanate and a member s...
07/31/2007
7238770Methods of making imide-modified polyester resins
The present invention relates to methods of making imide-modified polyester imide resins. The present invention further relates to forming these imide-modified polyester imide resins into articles, such as preforms, bottles, containers, sheets, films, fibers, and in...
07/03/2007
7235192Capped poly(arylene ether) composition and method
A method of preparing a capped poly(arylene ether) resin includes reacting a capping agent with a blend of two or more poly(arylene ether) resins having different intrinsic viscosities. Cured compositions prepared from these capped poly(arylene ether) resins exhibit...
06/26/2007
7196158Knitted/woven fabric of polyester fiber
A knitted/woven fabric of polyester fibers is produced from a polyester polymer obtained by condensation-polymerizing an aromatic dicarboxylate in the presence of a catalyst which comprises a mixture of a titanium compound ingredient (A) comprising a titanium alkoxi...
03/27/2007
7193029Sulfonated copolyetherester compositions from hydroxyalkanoic acids and shaped articles produced therefrom
The present invention provides certain sulfonated copolyetherester compositions containing hydroxyalkanoic acids and processes for producing such sulfonated aromatic copolyetheresters. The invention further provides shaped articles, preferably in the shape of films,...
03/20/2007
7169860Amorphous-crystalline block copolymers
Biodegradable block copolyesters obtained from crystalline blocks and amorphous blocks, wherein the repeating units of both blocks are of the dicarboxylic acid/diol type. Said copolyesters are characterized by a melting temperature equal to or less than 15% lower th...
01/30/2007
7157549Polymerization of oxiranes with a lithium-containing initiator
A method is provided for polymerizing oxiranes by employing a lithium-containing polymerization initiator in a liquid reaction medium devoid of polymerization additives. Linear and star polymers can be produced by practicing the subject method. ...
01/02/2007
7129301Method for preparing a biodegradable copolyester
A method for preparing a biodegradable copolyester includes: (a) optionally preparing an aromatic prepolymer by reacting a first aromatic dicarboxylic compound with a first aliphatic glycol; (b) reacting the aromatic prepolymer with a second aromatic dicarboxylic co...
10/31/2006
7125611Polyester compositions useful for image-receiving layers
The invention relates to a composition comprising a polyester copolymer that comprises (a) recurring dibasic acid derived units and polyol derived units, at least 50 mole % of the dibasic acid derived units comprising dicarboxylic acid derived units each containing ...
10/24/2006
7105627Polyester stilbene composition
A copolyester composition comprising units of residues of a) about 1–40 mole % of trans 3,3′, trans 4,4′ stilbene dicarboxylic acid and the combination thereof, b) about 99˜60 mole % of cis,trans, and the combination thereof of 1,4 cyclohexane dicarboxylic ac...
09/12/2006
7074368Batch-type polyester polymerization apparatus
A batch-type polyester polymerization apparatus manufactured by assembling a conventional batch-type apparatus with a thin film tower. The batch-type polyester polymerization apparatus is advantageous in that oligomer is polymerized while forming a polyester thin fi...
07/11/2006
7014574Compositions for golf balls
Golf balls comprising thermoplastic, thermoset, castable, or millable elastomer compositions are presently disclosed. These elastomer compositions comprise reaction products of polyisocyanates and telechelic polymers having isocyanate-reactive end-groups such as hyd...
03/21/2006
6995215Cross-linked networks from multifunctional hyperbranched polymers
Hyperbranched polymers having a plurality of at least two different types of functional groups are described. Specific embodiments include hyperbranched polymers having functional groups of a first type that are substantially uniformly distributed throughout the hyp...
02/07/2006
6967234Alkyd-lactone copolymers for medical applications
The present invention is directed to biodegradable, biocompatible polymers that are the reaction product of a polybasic acid or derivative thereof, a monoglyceride and a lactone monomer, as well as medical devices and compositions containing such polymers. ...
11/22/2005
6946088Thermosetting coating mass
The invention relates to a thermosetting coating mass, comprising a carboxyl functional polyester, and/or a carboxyl functional polyacrylate, a β-hydroxyalkylamide, in which a portion of the hydroxyl groups are chemically blocked and/or fillers and/or heat stabilis...
09/20/2005
6914101Polyester block copolymer composition
The present invention relates to a polyester block copolymer composition which is obtained by reacting 0.5 to 5.0 parts by weight of an epoxy compound (C) having two or more functionalities with 100 parts by weight of a polyester block copolymer (P) having an acid v...
07/05/2005
6881785Dispersions of amorphous unsaturated polyester resins based on particular Dicidol isomers
An aqueous dispersion based on an amorphous unsaturated polyester resin obtained by polycondensing a mixture of Dicidol isomers and one or more saturated and/or unsaturated dicarboxylic acids. ...
04/19/2005
6787245Sulfonated aliphatic-aromatic copolyesters and shaped articles produced therefrom
Sulfonated aliphatic-aromatic copolyesters are provided. The copolyesters are produced from a mixture of aromatic dicarboxylic acids, aliphatic dicarboxylic acids, ethylene glycol, other glycols, and components containing alkali metal or alkaline earth metal sulfo g...
09/07/2004
6767479Cross-linking mixtures of beta-hydroxyalkylamide and compound of formula (II) and their use thereof
Described herein are mixtures of cross-linking agents for the preparation of powder paints wherein the binder consists of polyester resins having free carboxyl groups. The cross-linking mixture itself comprises at least one Beta-hydroxyalkylamide compound having a B...
07/27/2004
6746779Sulfonated aliphatic-aromatic copolyesters
A copolyester having an inherent viscosity of equal to or greater than about 0.3 formed from about 20 to about 60 mole percent based on the amount of aromatic dicarboxylic acid of one or more of isophthalic dicarboxylic acid or an alkyl diester thereof, about 40 to ...
06/08/2004
6739720PROCESS FOR PRODUCING ALICYCLIC (METH)ALLYI ESTER MONOMER, ALICYCLIC (METH)ALLYL ESTER COMPOUND, PRODUCTION PROCESS OF THE COMPOUND, PLASTIC LENS COMPOSITION CONTAINING THE COMPOUND, PLASTIC LENS OBTAINED BY CURING THE COMPOSITION, AND PRODUCTION PROCESS OF THE PLASTIC LENS
An alicyclic (meth)allyl ester monomer obtained by a specific production process. An alicyclic (meth)allyl ester compound for plastic lenses, which can be obtained by a simple and easy production process and which can endure a long-term storage, is produced using th...
05/25/2004
6706396Processes for producing very low IV polyester resin
The present invention provides processes for producing certain very low inherent viscosity polyesters. Also provided are the low inherent viscosity polyesters in discrete particulate form, and processes for producing the particulate polyesters. The discrete particul...
03/16/2004
6699945Polycarboxylic acid based co-binder
A formaldehyde free co-binder solution formed by using a polyol to crosslink polycarboxylic acid and a polyacid monomer is provided. In forming the co-binder solution, the polyacid monomer and the polyol are mixed in any conventional device with heat and ...
03/02/2004
6673874Modified polymers
Process for preparing a thermosetting coating composition comprising; (a) mixing (i) a cleavable carbonyl polymer having an activated carbonyl group adjacent to oxygen or nitrogen, in the backbone, and having a molecular weight greater than 5,000 (...
01/06/2004
6653435Nonlinear crystalline polyester
A nonlinear crystalline polyester obtained by polycondensing monomers containing trivalent or higher polyvalent monomers selected from the group consisting of trihydric or higher polyhydric alcohols and tricarboxylic or higher polycarboxylic acid compound...
11/25/2003
6646034Polyacetal resin composition and fragrance-emitting shaped article
The invention provides fragrance-emitting shaped articles such as slide fasteners which retain the various characteristics inherent to polyacetal resins. Shaped articles such as the row of engaging teeth, top end stop and bottom end stop or separable end ...
11/11/2003
6646089Hyperbranched polymers with latent functionality and methods of making same
Hyperbranched polymers having a plurality of at least two different types of functional groups are described. Specific embodiments include hyperbranched polymers having functional groups of a first type that are substantially uniformly distributed through...
11/11/2003
6630564Copolyester with improved extrusion processing and color for extrusion blow molding
To a copolyester reacted essentially by terephthalic acid components and ethylene glycol units, adding 1% to 15 weight % of specific diol unit selected from the group consisting of at least one of 2-butyl-2-ethyl-1,3-propanediol, 3-methyl-1,5-pentanediol,...
10/07/2003
6623853Polyethylene glycol modified polyester fibers and method for making the same
Disclosed is a method of copolymerizing polyethylene glycol (PEG) and branching agent into polyethylene terephthalate (PET) to achieve a polyethylene glycol-modified polyester composition that can be spun into filaments. Fabrics made from fibers formed fr...
09/23/2003
6610795Process to produce poly(alkylene ether) glycol-containing polyesters
A process for producing a polyester that comprises 1 to 90 wt. % poly(alkylene ether) glycol. The process comprises the step of copolymerizing (i) a preformed polyester polymer having an inherent viscosity of at least 0.4 dL/g, (ii) a poly(alkylene ether)...
08/26/2003
6592913Crosslinked branched polyesters
A gum base comprising a crosslinked branched polyester gel prepared from the process comprising: a) providing a first pre-gel composition having carboxyl end groups; b) providing a second pre-gel composition having hydroxyl end groups; c) removing either ...
07/15/2003
1                      
 
Sign InRegister
Username  
Password   
forgot password?