RU95116248A - POWDERED, crosslinked POLYMERS, ABSORBING WATER LIQUIDS UNDER LOAD, AND ALSO BLOOD, A METHOD FOR PRODUCING SUCH POLYMERS AND THEIR APPLICATION IN TEXTILE STRUCTURES FOR BODY HYGIENE - Google Patents

Claims (10)

1. Powdered, crosslinked polymers, absorbing aqueous or serous fluids and blood, formed from a) 55 - 99, 9 wt.% Polymerized unsaturated polymerizable monomers containing acid groups, which are at least 25 mol. % neutralized; b) 0 to 40 wt.% polymerized unsaturated a) capable of copolymerization of monomers; in). 0.1 to 5.0 wt.% Crosslinking agent; d). O - 30 wt.% Water-soluble polymer, and mass quantities a). - g). are designed for an anhydrous polymer, characterized in that it is the product of a method in which 100 parts of the above-described particulate polymer are mixed with an aqueous solution of at most 10 parts of at least 10% phosphoric acid and a). 0.05-0.3 parts of a compound that can react with at least two carboxyl groups and does not contain any alkali salt-forming group in the molecule, and / or b). 0.05 - 1 part of a compound that can react with at least two carboxyl groups and contains one alkaline salt-forming group in the molecule, and then heated at 150 - 250 ^o C. 2. The polymers according to claim 1, characterized in that they have a) a holding capacity of 27 - 34 g of a 0.9% sodium chloride solution per gram of polymerizate; b) the absorption of a 0.9% solution of sodium chloride under a pressure of 40 g / cm ² in an amount of more than 15 g, preferably more than 18 g, per gram of polymerizate; in). the absorption of a 0.9% solution of sodium chloride under a pressure of 60 g / cm ² in an amount of more than 12 g, preferably more than 15 g, per gram of polymerizate g). a swelling pressure of more than 400 g, preferably more than 600 g  3. Polymers according to paragraphs. 1 or 2, characterized in that they are formed from acrylic acid, methacrylic acid and / or 2-acrylamido-2-methylpropanesulfonic acid as the monomer containing acidic groups.  4. Polymers according to any one of paragraphs. 1-3, characterized in that the monomers containing acid groups are neutralized by at least 50 mol%.  5. Polymers according to any one of paragraphs. 1 to 4, characterized in that they are formed from neutralized to 50 - 80 mol.% Acrylic acid as a monomer containing acidic groups.  6. Polymers according to any one of paragraphs. 1 to 5, characterized in that these water-soluble polymers are used in concentrations of 1 to 5 wt.%.  7. Polymers according to any one of paragraphs. 1 to 6, characterized in that the starch and / or polyvinyl alcohol are used as water-soluble polymers. 8. A method of obtaining a powdered, crosslinked polymer absorbing aqueous and serous fluids and blood formed from a). 55 to 99.9% by weight of polymerized unsaturated polymerizable monomer-containing acid groups which are neutralized by at least 25 mol%; b) 0 to 40 weight. % polymerized, unsaturated, a) capable of copolymerization of monomers; in). 0.1 - 5.0 wt.% Crosslinking agent, g). 0 to 30 wt.% Water-soluble polymer, and mass quantities a). - g). calculated on an anhydrous polymer, characterized in that 100 parts of the above polymer, taken in the form of particles, are mixed with a solution of at most 10 parts of at least 10% phosphoric acid and a). 0.05-0.3 parts of a compound that can react with at least two carboxyl groups and does not contain any alkali salt-forming group in the molecule, and / or b). 0.05 - 1 part of a compound that can react with at least two carboxyl groups and contains an alkali salt-forming group in the molecule; and then heated at 150 - 250 ^o C. 9. The use of polymers in paragraphs. 1 - 7 in textile constructions for absorbing body fluids under increased load, possessing: a). holding capacity of 27 - 34 g of 0.9% sodium chloride solution per gram of polymerizate; b) the absorption of a 0.9% sodium chloride solution under a pressure of 40 g / cm ² in an amount of more than 15 g, preferably more than 18 g, per gram of polymerizate; in). the absorption of a 0.9% sodium chloride solution under a pressure of 60 g / cm ² in an amount of more than 12 g, preferably more than 15 g, per gram of polymerizate; g) a swelling pressure of more than 400 g, preferably more than 600 g  10. The use of polymers in paragraphs. 1 to 9 in structures consisting of hydrophilic fibers and 2 to 80 wt.% Polymerizate, based on the total weight.