| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 528296000 | Reactant contains three or more carboxylic acid groups or is derivative thereof | 13 |
| 20090018306 | Selectively-Releasable Adhesives - In one embodiment, a selectively-releasable adhesive includes a copolymer formed from a multifunctional alcohol and a multifunctional carboxylic acid, wherein the copolymer has been cured the equivalent of up to approximately 20 hours at 120° C. and 100 millitorr. | 01-15-2009 |
| 20090036642 | Glycerol Polycarbonate Polyesters and Other Polyhydroxylated Polymers and Copolymers, Acetylation Method and Applications - The invention concerns polyesters of at least one of polyhydroxylated compounds at least partly acylated, belonging the group consisting of polyhydroxylated compounds constituted by glycerol polycarbonates, specific polyglycerols, [(a-hydroxymethyl) oxyethylene/(a-hydroxymethyl) ethylene carbonate] copolymers, [(a-hydroxymethyl) oxyethylene/(a-hydroxymethyl) ethylene carbonate] copolymers, [(a-alkyl) oxyethylene/(a-hydroxyalkyl) oxyethylene] copolymers. The invention also concerns a method for acylating at least partly one of said polyhydroxylated compounds. The invention is applicable to the technical fields relating to engine and industrial lubricants, greases, hydraulic fluids, metal deformation and processing lubricants, stripping and mold dressing products, oil prospecting, mines, tunnel borers, cosmetics, detergency, inks, textile coatings and papers, to the field of food products, to the protection of wood as synthesis intermediates. | 02-05-2009 |
| 20090312518 | INSULATING POLYMER MATERIAL COMPOSITION - An insulating polymer material composition is obtained by adding an acid anhydride as a curing agent and an organic peroxide such as dicumyl peroxide as a curing accelerator (for example, in an amount of 0.5 to 16.0 phr) to an epoxidized linseed oil, kneading the resulting under conditions according to the added amounts, and then heat-treating the kneaded substance, thereby causing peroxide vulcanization and three-dimensional crosslinking. This insulating polymer material composition is applied to polymer products such as high-voltage devices. | 12-17-2009 |
| 20100174045 | NONTOXIC POLYETHOXYSILOXANE MATERIAL OR THE PRODUCTION OF BIOLOGICALLY RESORBABLE AND OR BIOACTIVE ARTICLES CONTAINING POLYETHOXYSILOXANE MATERIAL, THE PRODUCTION THEREOF, AND THE USE THEREOF - The present invention relates to a polyethoxysiloxane (PES) material to be obtained in that (a) a first hydrolysis condensation reaction of a maximum of one group X of one or more different Si compounds of the formula (I) SiX4 (I) in which the groups X are the same or different and represent hydroxy, hydrogen, or ethoxy (EtO), are catalyzed in an acidic fashion at an initial pH value of 0 to ≦7, is conducted in the presence of ethanol (EtOH) or an ethanol-water mixture as a solvent over a time period of 1 to 24 hours at a temperature of 0° C. to 78° C., (b) a second hydrolysis condensation reaction of the material obtained in step (a) is conducted while simultaneously removing the solvent by successive evaporation in a gas diffusion-tight container at a pressure of 100 to 1013 mbar, preferably at a slight negative pressure of 300 mbar to 800 mbar and a temperature of 50-78° C. until a drastic increase in viscosity (at a shear rate of 10 s | 07-08-2010 |
| 20100305297 | ALIPHATIC POLYESTER RESIN AND ITS PRODUCTION METHOD - An aliphatic polyester resin having excellent moldability and its production method are provided. When the amount of specific structural units contained in an aliphatic polyester resin is adjusted to an optimum amount, an aliphatic polyester resin having sufficient melt tension at the time of molding and excellent moldability than in the past and its production method is provided. | 12-02-2010 |
| 20110288263 | BIOBASED POLYESTERS - The present invention relates to polyesters prepared from benzene, cyclohexene and cyclohexane compounds having carboxylic acid groups at the 1 and 4, and optionally the 2, positions, such as terephthalic acid or dimethyl terephthalates, and alkylene glycols, such ethylene glycol or 1,4-butane diol. The invention also relates to processes for preparing such polyesters. The invention also relates to such polyesters derived from starting materials derived from renewable resources. | 11-24-2011 |
| 20130274433 | POLYFUNCTIONAL EPOXY COMPOUND - There is provided an epoxy resin composition having low viscosity and a high cationic curing property. An epoxy compound of Formula (1): | 10-17-2013 |
| 20140051824 | BIO-BASED PRE-REACTED PRODUCT OF A POLYOL AND A MONOMERIC OR POLYMERIC POLYCARBOXYLIC ACID - An environmentally friendly, pre-reacted product of a polyol and monomeric or polymeric polycarboxylic acid or polyglycerol is provided. The pre-reacted product may include glycerol and esters of citric acid such a monoglyceryl citrate, diglyceryl citrate, and triglyceryl citrate as well as other citric acid-based esters. The pre-reacted product, when used in a binder, helps to speed the crosslinking reaction, induces faster water evaporation, decreases the viscosity of the binder, helps to reduce the amount of water needed for application of the binder, and decreases tackiness. The pre-reacted product may be used, for example, in the formation of insulation materials and non-woven chopped strand mats. | 02-20-2014 |
| 20140066587 | Novel Biodegradable Elastomeric Scaffold for Tissue Engineering and Light Scattering Fingerprinting Methods for Testing the Same - The present invention is directed to a novel biocompatible polymer that may be used in tissue engineering. More specifically, the specification describes methods and compositions for making and using citric acid copolymers. | 03-06-2014 |
| 20140350211 | PROCESS FOR PRODUCING POLYESTERS - The present invention relates to a process for producing high-molecular-weight copolyesters with use of a kneader. | 11-27-2014 |
| 20150038668 | Branched Polyesters Based On Citric Acid, Their Preparation And Use - Branched polyesters obtained by polycondensation of citric acid with at least one poly-alcohol having at least two hydroxyl groups and, if desired, further polycarboxylic acid components, the molar ratio of citric acid to polyalcohol being 2.4:1 to 1:3. | 02-05-2015 |
| 20150299384 | METHOD FOR PREPARING BIODEGRADABLE POLYESTER COPOLYMER - The present invention provides a method of preparing a polyester-based polymer and a polyester-based polymer prepared by the method. The method of preparing the polyester-based polymer includes a prepolymerization step of polymerizing a dicarboxylic acid compound (A), a diol compound (B), and an aromatic branching agent (C) at 160-220° C. to produce a prepolymer; and a condensation polymerization step of performing a condensation polymerization of the prepolymer at 200-250° C., under a vacuum pressure of 0.1 to 2 Torr. | 10-22-2015 |
| 20160017093 | A Process to Prepare a Cyclic Oligomer and a Cyclic Oligomer Obtainable Thereby - A process to prepare a cyclic polyester oligomer composition comprising a cyclic polyester oligomer having furanic units is disclosed. The process comprises the step of reacting a monomer component in the presence of an optional catalyst and/or optional organic base in a ring closing oligomerization step under conditions of a reaction temperature and reaction time sufficient to yield a cyclic polyester oligomer having furanic units. The invention further relates to a cyclic polyester oligomer composition obtainable by said process, wherein the cyclic polyester oligomer composition comprises a cyclic polyester oligomer of structure Y1 or Y2 having furanic units, wherein the composition contains less than 5%, preferably 3, most preferably 1 weight % of linear oligomeric polyester species in the composition. The present invention further relates also to the use of said cyclic polyester oligomer composition in the production of a polyester polymer. | 01-21-2016 |
