Patent application number | Description | Published |
20140114030 | PREPARATION METHOD OF HIGH-PERFORMANCE STAR-SHAPED POLYCARBOXYLATE SUPERPLASTICIZER - This invention relates to a method for preparing a star-shaped polycarboxylate superplasticizer by the first esterification step with polyol and (meth)acrylic acid as main reactants and the second polymerization step. In the first step, the star-shaped polymerizable active ends were synthesized by esterification between polyol and (meth)acrylic acid in the presence of catalyst. In the second step, the final star-shaped polycarboxylate superplasticizer was prepared by radical polymerization among the product obtained in first step, unsaturated polyoxyethylene ethers, molecular weight regulator and unsaturated carboxylic acid in the presence of initiator. The production process of this invention exhibits some characteristics including simple, easily controllable, high polymerization degree, low cost and pollution free. The star-shaped molecular structure of polycarboxylate superplasticizer can be achieved through synthesizing active “core” by esterification and “arm” by radical polymerization. It showed better cement paste fluidity and fluidity retention, which manifested as better adaptability to cement and application performance in concrete, than both traditional linear and comb-shaped polycarboxylate superplasticizer at common or lower dosage. | 04-24-2014 |
20140343291 | SILICON-CONTAINING BIANTHRACENE DERIVATIVE, PRODUCTION PROCESS AND USE THEREOF, AND ORGANIC ELECTROLUMINESCENT DEVICE - The invention provides a silicon-containing bianthracene derivative, a production process and use thereof, and an organic electroluminescent device. The invention belongs to the technical field of organic electroluminescence, and can give a blue light-emitting material being able to form a dense film. The silicon-containing bianthracene derivative has a molecular structure of the following general formula, wherein R group represents an aryl group having a carbon atom number of 6-14, an aromatic heterocyclic group having a carbon atom number of 8-18, a fused-ring aromatic group having a carbon atom number of 9-15, a fluorenyl group, or a triarylamino group. The silicon-containing bianthracene derivative mentioned in the invention can be used in an organic electroluminescent device. | 11-20-2014 |
20140343293 | 1, 2, 4-TRIAZOLE-BASED DERIVATIVE, PRODUCTION PROCESS AND USE THEREOF, AND ORGANIC ELECTROLUMINESCENT DEVICE - The invention provides a 1,2,4-triazole-based derivative, a production process and use thereof, and an organic electroluminescent device. The invention belongs to the technical field of organic electroluminescence, and can give a blue light-emitting material having a higher luminescence efficiency. The 1,2,4-triazole-based derivative has a molecular structure of the following general formula, wherein A group represents an aromatic heterocyclic group having a carbon atom number of 8-18, a fused-ring aromatic group having a carbon atom number of 9-15, a fluorenyl group, or a triarylamino group. The 1,2,4-triazole-based derivative mentioned in the invention can be used in organic electroluminescent device. | 11-20-2014 |
20150349274 | BICARBAZOLE DERIVATIVE, PREPARATION PROCESS AND USE THEREOF, AND ORGANIC LUMINESCENT DEVICE - The invention provides a bicarbazole derivative represented by formula (I), wherein A is a group represented by formula (II), and wherein X, Y and Z represent a carbon atom or a nitrogen atom, and at least one of X, Y and Z represent a nitrogen atom. The invention further provides a process for preparing the compound. The invention further provides an organic electroluminescent device comprising the compound. This compound can be used as a phosphorescence host material, a hole-injecting material or a hole-transporting material in an organic electroluminescent device. | 12-03-2015 |
20150376085 | ANTHRACENE COMPOUND, METHOD FOR PREPARING THE SAME, USE THEREOF AND ORGANIC LIGHT EMITTING DEVICE - Provided are anthracene compound, method for preparing the same and use thereof, as well as organic electroluminescent device containing the same. The anthracene compound represented by a formula: | 12-31-2015 |
20150380655 | ANTHRACENE DERIVATIVE, METHOD FOR PREPARING THE SAME, USE THEREOF AND ORGANIC LIGHT EMITTING DEVICE - Provided are anthracene derivative, method for preparing the same, use thereof, and an organic light emitting device. The anthracene derivative represented by a formula: | 12-31-2015 |
20160046621 | INDOLOACRIDINE-CONTAINING DERIVATIVE, PREPARATION PROCESS AND USE THEREOF, AND ORGANIC LUMINESCENT DEVICE - The disclosure provides an indoloacridine-containing derivative represented by formula (I), wherein A is a group represented by formula (II), and wherein X, Y, Z and W represent a carbon atom or a nitrogen atom, and at least one of W, X, Y and Z represent a nitrogen atom; R represents a phenyl group, a biphenylyl group, a naphthyl group or a phenanthryl group. The disclosure further provides a process for preparing the compound. The disclosure further provides an organic electroluminescent device comprising the compound. This compound can be used as a phosphorescence host material, a hole-injecting material or a hole-transporting material in an organic electroluminescent device. | 02-18-2016 |
20160064668 | ANTHRACENE-CONTAINING DERIVATIVE, PRODUCTION PROCESS THEREOF AND ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE - The invention discloses an anthracene-containing derivative, the production process thereof and an organic electroluminescent display device, wherein the anthracene-containing derivative has a general molecular structural formula of Formula I, wherein, R | 03-03-2016 |