Homopolymers and copolymers of acrylamide N-substituted acrylami

Details Homopolymers and copolymers of acrylamide N-substituted acrylami Homopolymers and copolymers of acrylamide N-substituted acrylami

1991-09-23

1994-01-18

Henderson, Christopher

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253282, 5253284, 5253294, 5253299, 5253305, C08F 830, C08F 814

Patent

active

052800784

ABSTRACT:
Cross-linked polymeric gels or films are prepared by dissolving in a suitable solvent a linear polymer or polymers at least one of which is predominantly (at least 80%) made from monomers containing pendant amidocarbonyl or oxycarbonyl groups. For the cross-linking reaction are present either hydroxyl groups, present as either pendant groups from the polymer, or as low molecular weight polyols; or amino groups, present as either pendant groups from the polymer, or as low molecular weight diamines or polyamines. Either no catalyst is present or a strongly acidic catalyst (which may also be a pendant group on a polymer) is used. The solvent is removed by coagulation and/or drying and the dry material is heat-cured, thus cross-linking and insolubilizing the polymer or polymers.

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