Stable copolymers

Details Stable copolymers Stable copolymers

2007-09-25

2007-09-25

Woodward, Michael P. (Department: 1615)

Drug, bio-affecting and body treating compositions

Designated organic nonactive ingredient containing other...

Aftertreated solid synthetic organic polymer

C514S772000, C424S400000

Reexamination Certificate

active

10342924

ABSTRACT:
A graft reverse thermal hydrogel which does not show substantial loss of complex viscosity at and up to 20 degrees above the transition temperature upon autoclaving or aging. Other embodiments include the graft reverse thermal copolymer which can be dissolved in water to produce the graft reverse thermal hydrogel, a process for manufacturing the graft reverse thermal copolymer and hydrogel and applications for the stable graft reverse thermal hydrogel.

REFERENCES:
patent: 5939485 (1999-08-01), Bromberg et al.
patent: 6316011 (2001-11-01), Ron et al.
patent: 6486213 (2002-11-01), Chen et al.
patent: 7008628 (2006-03-01), Ron et al.
patent: WO95/24430 (1995-09-01), None
patent: WO98/06438 (1998-02-01), None
patent: WO98/50005 (1998-11-01), None
L. Bromberg, Polyether modified Poly (acrylic acid): Synthesis and Applications, Ind. Eng. Chem. Res., 37,4267-4274, 1998, Am Chem Soc., Washington, D.C.

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