Polymeric interpenetrated network carrier and serial...

Details Polymeric interpenetrated network carrier and serial... Polymeric interpenetrated network carrier and serial...

2008-05-13

2008-05-13

Egwim, Kelechi C. (Department: 1713)

Drug, bio-affecting and body treating compositions

Topical body preparation containing solid synthetic organic...

C424S059000, C523S351000, C525S903000

Reexamination Certificate

active

10705691

ABSTRACT:
This invention relates to a highly stable, dense interpenetrated crosslinked polymer network (ICPN) containing (a) a crosslinked, network-forming primary polymer containing vinyl lactam and/or acrylic acid moieties, and (b) a secondary, optionally crosslinked, distinctly different polymer interpenetrated into the network of (a) and derived from a monomer selected from the group consisting of an acrylate and/or acrylamide monomer. The invention also relates to the oil-suspension, sequential polymerization of (a) and (b) for producing the above described interpenetrated polymeric network.

REFERENCES:
patent: 4833222 (1989-05-01), Siddall et al.
patent: 5374684 (1994-12-01), Tai
patent: 5814031 (1998-09-01), Mooney et al.

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