Patent ID: 7777093
Filing Date: 2010-08-17
Classification: B01J,C08F,C08J,C08L

Abstract:
1. A sanitary article comprising a superabsorbent polymer composition comprising a superabsorbent polymer consisting essentially of: a) from about 55 to about 99.9 wt.% of polymerizable unsaturated acid group containing monomers; b) from about 0.001 to about 5.0% by weight of internal crosslinking agent based on the weight of a); wherein elements a) and b) are polymerized and prepared into superabsorbent polymer particles; wherein the superabsorbent polymer particles further comprise the following surface additives c) from about 0.001 to about 5.0% by weight of surface crosslinking agent applied to the particle surface based on dry polymer powder weight; d) from about 0.01% to about 5 wt.% by weight of a penetration modifier immediately before, during or immediately after the surface crosslinking agent based on dry polymer powder weight; e) from 0 to about 5% by weight of a multivalent metal salt on the particle surface based on dry polymer powder weight; f) from 0 to about 2% by weight of a surfactant on the particle surface based on dry polymer powder weight; g) from about 0.01 to about 5% by weight of an insoluble, inorganic powder based on dry polymer powder weight; and h) from about 0.01 to about 0.5% by weight of a thermoplastic polymer based on dry polymer powder weight, said thermoplastic polymer having a thermoplastic melt temperature wherein the thermoplastic polymer is applied on and fully encapsulates the particle surface coincident with or followed by a temperature at least about the thermoplastic melt temperature or greater, wherein the superabsorbent polymer composition has a degree of neutralization of more than about 25%; and having the characteristics of centrifuge retention capacity of about 25 g/g or more; a gel bed permeability I of about 500 ×10