Controlled release polymeric gels

Details Controlled release polymeric gels Controlled release polymeric gels

2011-03-08

2011-03-08

Wax, Robert A (Department: 1615)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

C524S195000, C525S907000, C560S334000

Reexamination Certificate

active

07901695

ABSTRACT:
A controlled continuous release composition, articles comprising the continuous release composition, methods of using the composition, and methods of preparing the composition are disclosed. The composition comprises an elastomeric matrix which is a reaction product of a carboxyl-terminated polymer with a polycarbodiimide and at least one active agent which is released from the matrix into the environment substantially continuously over an extended period of time.

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patent: WO 91/19470 (1991-12-01), None
Hawley's Condensed Chemical Dictionary (13thEd.), p. 215 (1997)—Entry for carboxyl group.
Hawley's Condensed Chemical Dictionary (13th Ed.), p. 215 (1997)—Entry for carboxyl group.
MSDS Krasol LBPH 2000.
Perstorp Product Data Summary.
Perstorp Polyol 200 TP.

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