Patent ID: 6403700
Filing Date: 2002-06-11
Classification: A61F,A61L,B01J,C08F

Abstract:
A moisture absorbing article comprising a powdery, cross-linked polymer, comprising:a) 55-99.9%-wt. of at least one unsaturated, polymerizable, acid group-containing monomer which is present as a salt neutralized to the extent of 5-30 mol-%, b) 0-40%-wt. of at least one unsaturated monomer which is copolymerizable with the monomer according to a), c) 0.01-5.0%-wt. of at least one cross-linking agent, and d) 0-30%-wt. of at least one water-soluble polymer, with the sum of components a)-d) amounting to 100%-wt., and the portion of the polymerized acid group-containing monomer a) in the polymer is neutralized to the extent of at least 50 mol-%, and the polymer is additionally cross-linked on the surface and it has a retention for a 0.9% aqueous NaCl-solution of at least 25 g/g polymer, a liquid absorption under a pressure of 50 g/cm2 of at least 25 g/g polymer, a swelling pressure after 20 minutes of at least 700 g, relative to 1 g of polymer, a maximum soluble content of 3.5-10%-wt. after 16 hours, and a maximum rewet of 2.0 g, wherein said article is selected from the group consisting of a sanitary article, a current-conducting cable, and a light-transmitting cable.