Hydrophilic N,N-diethyl acrylamide copolymers

Details Hydrophilic N,N-diethyl acrylamide copolymers Hydrophilic N,N-diethyl acrylamide copolymers

1976-02-12

1978-02-14

Levin, Stanford M.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

3 1, 3 14, 128156, 260 296TA, 424 81, 264 1, 351160, C08F22054

Patent

active

040740390

ABSTRACT:
There is disclosed a hydrophilic gel suitable for exposure to repeated long-term contact with live tissues or mucous membranes and consisting of macromolecules obtained by polymerizing a mixture of at least two copolymerizable units and a crosslinking agent. The mixture consists of from 52 to 99.5 parts by weight of N,N-diethylacrylamide, 43 to 0.1 parts by weight of a member selected from the group consisting of N,N-dialkyl acrylamide, N-alkyl methacrylamide, nitriles of acrylic and methacrylic acids and from 5 to 0.4 parts by of a divinylic monomer selected from the group consisting of diesters of acrylic acid and methacrylic acid, and methylene or ethylene-bis-methacrylamide or acrylamide.

REFERENCES:
patent: 3660545 (1972-05-01), Wichterle

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