Class / Patent application number | Description | Number of patent applications / Date published |
526270000 |
5-membered heterocyclic ring compound contains at least one oxygen atom
| 46 |
526268000 |
From cyclic ether which is bridged or fused to a ring system
| 17 |
526273000 |
3-membered heterocyclic ring contains at least one oxygen atom
| 16 |
526269000 |
Hetero-oxygen ring compound contains a carbonate group, i.e., -O-C(=O)-O as ring atoms | 4 |
20090253880 | DISPERSION STABILIZER FOR SUSPENSION POLYMERIZATION OF VINYL-BASED COMPOUND - The present invention aims at providing a dispersion stabilizer for suspension polymerization of a vinyl-based compound, which gives vinyl chloride-based polymer particles having a sharp particle size distribution and a high bulk density owing to excellent dispersion stability during polymerization, and which can produce vinyl chloride-based polymer particles with few wet foams, hardly accompanied with formation of polymer scales and foamy polymers attributable to dry foams, with less coloring, and having excellent heat resistance. The dispersion stabilizer of the invention comprises a PVA-based resin having a 1,2-diol component at a side chain and a degree of saponification of 65 to 87% by mol. | 10-08-2009 |
20110009585 | THERMOPLASTIC ACRYLIC RESIN AND MOLDED BODY FOR OPTICAL MEMBER - The present invention provides a thermoplastic acrylic resin comprising (i) a repeating unit derived from a methacrylate monomer, (ii) a repeating unit derived from a vinyl aromatic monomer, (iii) a repeating unit derived from an aromatic group-containing methacrylate monomer, and (iv) a cyclic acid anhydride repeating unit, and a molding for optical material comprising the same. | 01-13-2011 |
20120178891 | POLYMERS BEARING PENDANT PENTAFLUOROPHENYL ESTER GROUPS, AND METHODS OF SYNTHESIS AND FUNCTIONALIZATION THEREOF - A one pot method of preparing cyclic carbonyl compounds comprising an active pendant pentafluorophenyl ester group is disclosed. The cyclic carbonyl compounds can be polymerized by ring opening methods to form ROP polymers comprising repeat units comprising a side chain pentafluorophenyl ester group. Using a suitable nucleophile, the pendant pentafluorophenyl ester group can be selectively transformed into a variety of other functional groups before or after the ring opening polymerization. | 07-12-2012 |
20130331532 | POLYMERIZABLE ALKYLIDENE-1,3-DIOXOLANE-2-ONE AND USE THEREOF - Polymerizable alkylidene-1,3-dioxolan-2-one monomers, a process for preparation of polymerizable alkylidene-1,3-dioxolan-2-one monomers, and the use thereof for preparation of polymers. The invention also relates to the homopolymers and copolymers obtained by homopolymerization or copolymerization of alkylidene-1,3-dioxolan-2-one monomers and to the use thereof as a component in 2K binder compositions. | 12-12-2013 |
Entries |
Document | Title | Date |
20080227940 | Olefin Copolymers Containing Hydrolytically Cleavable Linkages and Use Thereof In Degradable Products - The invention is directed to olefin copolymers composed of nonhydrolyzable monomer units and hydrolyzable monomer units, the latter resulting from copolymerization of monomers containing a linkage that is hydrolytically cleavable in the presence of aqueous base or aqueous acid. Generally, the hydrolyzable monomer units represent a significant fraction of the copolymer, such that upon hydrolysis, a substantial portion of the copolymer is degraded into low molecular weight fragments. Also provided are degradable articles that are at least partially composed of a degradable copolymer in which hydrolyzable monomer units represent at least 20 mole % of the copolymer. These degradable articles include agricultural film products, adhesive tape substrates, bed linens, containers, disposable absorbent articles, packaging materials, bags, labels, pillow cases, protective clothing, surgical drapes, sponges, tampon applicators, disposable syringes, temporary enclosures and temporary siding, toys, wipes, foamed plastic products, and controlled release pellets, strips and tabs. | 09-18-2008 |
20090111961 | Acrylic Acid-Based Polymer and Method of Producing the Same - Disclosed are an acrylic acid-based polymer which is a star polymer containing a repeating unit derived from an (α-lower alkyl)acrylic ester represented by formula (I): | 04-30-2009 |
20100048848 | PROCESS FOR PRODUCING POLYMER FOR SEMICONDUCTOR LITHOGRAPHY - To provide a method for producing a polymer for semiconductor lithography which can attain high uniformity in the polymer from lot to lot. | 02-25-2010 |
20100130712 | ADAMANTANE DERIVATIVE, RESIN COMPOSITION USING THE SAME, AND RESIN CURED PRODUCT - Provided is a cured resin of an adamantane derivative having a specific structure, which has excellent optical properties such as transparency and (long-term) light stability, long-term heat resistance, dielectric constant, and mechanical properties, and which can be utilized suitably in the field of electronic and optical materials. | 05-27-2010 |
20100216959 | PROCESS FOR PRODUCTION OF PHOTORESIST RESINS - The object of the present invention is to provide a method for production of a photoresist resin which enables to reduce the amount of solvent used, to remove effectively impurities such as low molecular components and metal components and to prepare easily a resin having a narrow molecular weight distribution. The present invention is a method for production of a photoresist resin by polymerizing a polymerizable compound in the presence of a solvent and the method comprises (1) a resin solution preparation process in which a resin solution containing a photoreist resin is prepared, and (2) a purification process in which the resin solution is purified using a ultrafilter membrane. | 08-26-2010 |
20110040056 | PROCESS FOR PRODUCTION OF POLYMER - Disclosed is a process for the production of a polymer by polymerizing a monomer or monomers in a solvent to give a polymer solution; and bringing the polymer solution into contact with a poor solvent to precipitate the polymer and to remove impurities therefrom, in which the polymer solution is diluted with a solvent before being brought into contact with the poor solvent to precipitate the polymer. The polymerization solvent preferably has a coefficient of viscosity at 20° C. of 1 mPa·s or more. The dilution solvent preferably has a coefficient of viscosity at 20° C. of less than 1 mPa·s. The process enables efficient production of a polymer with good reproducibility in quality, which polymer contains less amounts of residual monomers and is useful as resist polymers, polymers for undercoat films of multilayer resists, polymers for anti-reflection coatings, and polymers for immersion topcoats. | 02-17-2011 |
20110046333 | ACRYLIC ACID-BASED POLYMER AND METHOD OF PRODUCING THE SAME - Disclosed are an acrylic acid-based polymer which is a star polymer containing a repeating unit derived from an (α-lower alkyl)acrylic ester represented by formula (I): | 02-24-2011 |
20110196122 | (METH)ACRYLATE DERIVATIVE, POLYMER AND PHOTORESIST COMPOSITION HAVING LACTONE STRUCTURE, AND METHOD FOR FORMING PATTERN BY USING IT - There are here disclosed a photoresist material for lithography using a light of 220 nm or less which comprises at least a polymer represented by the following formula (2) and a photo-acid generator for generating an acid by exposure: | 08-11-2011 |
20130035465 | RADICAL POLYMERIZABLE RESIN, RADICAL POLYMERIZABLE RESIN COMPOSITION, AND CURED PRODUCT THEREOF - Provided is a radically polymerizable resin which has a low viscosity, has excellent workability, and is rapidly cured upon application of heat and/or light to form a cured product having excellent flexibility and thermal stability. The radically polymerizable resin composition is obtained by cationic polymerization of an oxetane-ring-containing (meth)acrylic ester compound represented by following Formula (1) alone or in combination with another cationically polymerizable compound. In Formula (1), R | 02-07-2013 |
20140080988 | PHOSPHONATE-CONTAINING POLYMER AND USE THEREOF AND PHOSPHONATE-CONTAINING POLYMER VISCOSITY REDUCER FOR DRILLING FLUID - The present invention provides a phosphonate-containing polymer and use thereof and a phosphonate-containing polymer viscosity reducer for drilling fluid. The phosphonate-containing polymer comprises structural units expressed by formula (1), structural units expressed by formula (2), and structural units expressed by formula (3) and/or structural units expressed by formula (4), wherein, the ratio of the mole number of the structural units expressed by formula (1), mole number of the structural units expressed by formula (2), and total mole number of the structural units expressed by formula (3) and structural units expressed by formula (4) is 10-85:10-75:5-55. The phosphonate-containing polymer still has outstanding viscosity reducing effect after high-temperature aging when it is applied in brine drilling fluids and high-density drilling fluids. | 03-20-2014 |
20140155564 | METHOD FOR PURIFYING RESIN FOR PHOTOLITHOGRAPHY - Provided is a method for purifying a resin for photolithography wherein, from an insufficiently purified resin (also referred to as “crude resin”), low molecular weight impurities such as an unreacted monomer and a polymerization initiator, which cause a development defect of a resist pattern or deterioration of the storage stability of the resin for photolithography can be removed more effectively. A method for purifying a resin for photolithography according to the present invention is characterized by comprising: an operation (a): an operation wherein a slurry in which a resin is dispersed in a solution containing a good solvent and a poor solvent is stirred; and then, an operation (b): an operation wherein, to said slurry, a poor solvent is added to lower the ratio of the good solvent to the poor solvent, and then, the resin is separated from the solution. | 06-05-2014 |
20160040013 | COLORED COMPOSITION - The present invention is to provide a colored composition having higher heat resistance compared with conventional colored compositions. The present invention further relates to: “a polymer having a monomer unit derived from a monomer which has (i) a cationic rhodamine derivative having, as an counter anion, an anion including an aryl group having an electron-withdrawing substituent and an anion group and (ii) an ethylenically unsaturated bond”, “a monomer which has (i) a cationic rhodamine derivative having, as an counter anion, an anion including an aryl group having an electron-withdrawing substituent and an anion group and (ii) an ethylenically unsaturated bond”, “a colored composition comprising the above-described polymer or the monomer”, and “a colored composition for a color filter comprising the above-described polymer or the monomer”. | 02-11-2016 |
20160083612 | F-POSS COATINGS AND ADDITIVES AND METHODS OF MAKING SAME - Fluorinated polyhedral oligomeric silsesquioxane (“F-POSS”) copolymers and terpolymers useful in the field of coatings for enhancing performance of materials surfaces. Also disclosed are methods for making such copolymers and terpolymers. | 03-24-2016 |