摘要:
A method for efficient production of a water-soluble porous polymer and a water-soluble porous polymer excelling in solubility in water are provided. A method for the production of the polymer is characterized by the fact that an aqueous monomer solution containing an ethylenically unsaturated monomer is polymerized while it is containing bubbles therein. The method can simplify the drying and crushing steps and the water-soluble porous polymer consequently obtained excels in solubility in water.
摘要:
The present invention provides a detergent and fabric care additive containing a high molecular weight carboxylic acid polymer excellent in solubility in the use of a fabric treatment product such as a detergent and fabric care additive. A detergent and fabric care additive containing a carboxylic acid polymer powder, wherein the carboxylic acid polymer powder satisfies the following conditions (a) and (b) [(a) at least one of conditions that a 0.2% by weight aqueous solution has a viscosity of 10 mPa·s or higher and that a 1% by weight aqueous solution has pH lower than 6 and a 10% by weight aqueous solution has a viscosity of 300 mPa·s or higher and (b) at least one of conditions that 50% by weight or more of the carboxylic acid polymer powder passes through 20 mesh of a sieve according to JIS (Z8801) and that the average particle diameter is 600 μm or smaller]. A detergent and fabric care additive containing a carboxylic acid polymer powder, wherein the carboxylic acid polymer powder satisfies the following conditions (c) and (d) [(c) a 0.2% by weight aqueous solution of the carboxylic acid polymer powder has a viscosity of 10 mPa·s or higher and (d) the carboxylic acid polymer powder contains a carboxyl group and a sulfonic acid group and the ratio of the sulfonic acid group-containing monomer relative to 100% by mole of all monomers comprising the polymer is not less than 0.5% by mole and not more than 90% by mole].
摘要:
An cross-linked anion exchange resin or a salt thereof obtained by reacting a polymer (A) having amino and/or imino groups in the total number of two or more per molecule with a compound (B) having two or more functional groups capable of reacting with amino and/or imino group contained in the polymer (A). The resin or salt has a water absorption ratio of 4.0 or lower.