Polymer composition charged with powdered mineral material with

Details Polymer composition charged with powdered mineral material with Polymer composition charged with powdered mineral material with

1988-04-28

1990-12-11

Cashion, Jr., Merrell C.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521149, 522167, 523205, 523209, 524442, 525369, C08J 916, C08F22006, C08F 842, C08C 1922

Patent

active

049771922

ABSTRACT:
A granular polymer composition having increased water absorption and desorption capability, resistance to photogradation and increased life span, comprising a water-insoluble but swellable cross-linked polymer material formed of at least one polymer and/or copolymer prepared from at least one unsaturated ethylene monomer having at least one carboxylic, amide, sulfuric, sulfonic, phosphoric, phosphonic, or hydroxyl functional group and at least one powdered mineral charge well dispersed in and intimately bonded to said polymer as a result of its introduction into the mixture of monomers of the same type or of a different type before their polymerization into said polymer or copolymer.

REFERENCES:
patent: 3963512 (1976-06-01), Swift et al.
patent: 4206094 (1980-06-01), Yen et al.
patent: 4418163 (1983-11-01), Murakami et al.
patent: 4555319 (1985-11-01), Cohen et al.

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