Patent application number | Description | Published |
20090036644 | METHOD OF REMOVING RESIDUAL ETHYLENE OXIDE MONOMER IN POLYETHYLENE OXIDE - The present invention relates to a method of removing a residual ethylene oxide monomer in polyethylene oxide used as a raw material for pharmaceutical preparations. More particularly, the method of the present invention comprises retaining high-molecular weight polyethylene oxide particles at a temperature not higher than a crystal melting point of the polyethylene oxide in the absence of an aggregation inhibitor under an atmospheric pressure in the standing state and, then, cooling the particles to 40° C. or lower under an atmospheric pressure and in the standing state, thereby, reducing a residual ethylene oxide monomer concentration to 1 ppm or lower without influencing on physical properties such as a specific surface area of the high-molecular weight polyethylene oxide particles. | 02-05-2009 |
20090250182 | Papermaking Method and Papermaking System - A papermaking method according to this invention is carried out using a paper machine provided with a head box ( | 10-08-2009 |
20090292078 | WATER-SOLUBLE COPOLYMER HAVING ALKYL-MODIFIED CARBOXYL GROUPS - The present invention provide a water-soluble copolymer having alkyl-modified carboxyl groups which is able to produce a neutralized viscous liquid in which although its viscosity is very low when no electrolyte exists, the viscosity greatly increases when electrolytes are added, which has a sufficiently high viscosity and a very high transmittance and which has moist textures without stickiness even in the presence of a relatively high concentration of electrolytes, and a thickening agent comprising the same. More specifically, the present invention proves a water-soluble copolymer having alkyl-modified carboxyl groups which is obtained by polymerizing 100 parts by weight of (meth)acrylic acid, 5-10 parts by weight of lauryl (meth)acrylate, and 0-0.1 parts by weight of a compound having two or more of ethylenic unsaturated groups, wherein a 1 weight %-neutralized viscous liquid shows a viscosity of 1000 mPa·s or lower and a transmittance of 95% or higher, and when 1-7 parts by weight of sodium chloride is added to 100 parts by weight of the neutralized viscous liquid, the liquid shows a highest viscosity of 10000-30000 mPa·s and a transmittance of 95% or higher, and a thickening agent comprising the same. | 11-26-2009 |
20100029901 | Process for Producing Granular Carboxylated-Polymer Particle and Granular Carboxylated-Polymer Particle - An object of the invention is to provide a method for easily producing granular carboxyl group-containing polymer particles which have a high bulk density and readily swell in water. | 02-04-2010 |
20100159245 | METHOD FOR PRODUCING GRANULATED CARBOXYL GROUP-CONTAINING POLYMER PARTICLE AND GRANULATED CARBOXYL GROUP-CONTAINING POLYMER PARTICLE - An object of the present invention is to provide a method for easily producing granular carboxyl group-containing polymer particles which have a high bulk density and readily swell in water. | 06-24-2010 |
20100196763 | GELLING AGENT FOR BATTERIES - The present invention has its object to provide a gelling agent for a battery, which forms a paste gel in a short period of time on dissolution in an alkaline electrolyte. The gel has less bubbles and a high gel density. | 08-05-2010 |
20100267845 | (METH)ACRYLIC ACID/ALKYL (METH)ACRYLATE ESTER COPOLYMER AND COSMETIC PREPARATION CONTAINING THE SAME - A (meth)acrylic acid/alkyl (meth)acrylate ester copolymer containing constituents of 95.42 to 97.48% by mass of (meth)acrylic acid, 2.43 to 4.30% by mass of an alkyl (meth)acrylate ester of which alkyl group has 18 to 24 carbon atoms, and 0.08 to 0.30% by mass of a compound having two or more ethylenically unsaturated groups; and cosmetics blended with the copolymer. According to the copolymer of the present invention, a neutral viscous aqueous solution having a high viscosity can be formed even in the presence of an electrolyte in a relatively high concentration, without being affected by its temperature and electrolytic concentration; therefore, the copolymer of the present invention can be suitably used in cosmetics and the like. | 10-21-2010 |
20110021642 | WATER-SOLUBLE ACRYLIC ACID SALT POLYMER AND GELLING BASE - An object of the present invention is to provide a water-soluble acrylate polymer that can form a gelling base. When used in forming a poultice or cooling sheet, the gelling base not only imparts desirable stretchability, but also has an appropriate reaction rate with a polyvalent metal. The gelling base is free from gel penetration to the back side of a support or gel seeping from the support while the gel is being cured, and is easily applied to the support. When the gelling base is gelated by being allowed to stand under the conditions of 25° C. and a relative humidity of 60%, the gel strength is 3,200 to 7,000 dyn/cm | 01-27-2011 |
20110105709 | WATER-SOLUBLE ACRYLIC ACID SALT POLYMER AND GELLING BASE - The present invention provides a water-soluble acrylate polymer that makes it possible to obtain a gelling base having a gel strength recited below when the gelling base comprises the components and the proportions thereof listed below;
| 05-05-2011 |
20120108776 | METHOD FOR MANUFACTURING CARBOXYL GROUP-CONTAINING WATER-SOLUBLE POLYMER - In manufacturing of a carboxyl group-containing water-soluble polymer by a precipitation polymerization method, a method which can improve production efficiency with increasing practicality continuously adds a monomer solution wherein a monomer component containing an α,β-unsaturated carboxylic acid is dissolved in an inert solvent in a concentration of 20 to 50% by volume to an inert solvent charged in a reaction vessel. In this case, the amount of the inert solvent charged in the reaction vessel is set so that the concentration of the monomer component in the total amount summed up with the monomer solution is 10 to 24% by volume, and the time period until completion of continuous addition of the total amount of the monomer solution is set so that the conversion of the monomer component at the time of completion of addition of the total amount of the monomer solution is 60% or more. The monomer component may contain a polymerizable compound having two or more ethylenically unsaturated groups. | 05-03-2012 |