Epoxy modified organopolysiloxane resin based compositions...

Details Epoxy modified organopolysiloxane resin based compositions... Epoxy modified organopolysiloxane resin based compositions...

2006-10-24

2006-10-24

Zimmer, Marc S. (Department: 1712)

Stock material or miscellaneous articles

Composite

Of silicon containing

C428S413000, C524S588000, C525S476000, C528S027000, C528S028000

Reexamination Certificate

active

07125609

ABSTRACT:
The present invention relates to an epoxy modified polysiloxane composition obtainable by combining the following ingredients:—a polysiloxane of formula (1), wherein each R1is independently selected from hydroxy, alkyl, aryl or alkoxy radicals having up to six carbon atoms, each R2is independently selected from hydrogen, alkyl or aryl radicals having up to six carbon atoms and, wherein n is selected so that the molecular weight for the polysiloxane is in the range of from about 400 to 10,000; with formula (1)—an epoxy resin having more than one 1,2-epoxy groups per molecule with an epoxy equivalent weight in the range of from 100 to about 5,000; and—an amino hardener component having active hydrogens able to react with epoxy groups in the epoxy resin to form polymers containing hydroxyl groups, which are able to react with the silanol groups of hydrolyzed polysiloxane to form a polymer network, wherein the epoxy chain polymers and polysiloxane polymers polymerize to form a cured epoxy modified polysiloxane polymer composition.

REFERENCES:
patent: 5804616 (1998-09-01), Mowrer et al.
patent: 6525159 (2003-02-01), Okuhira et al.
patent: 41 29 000 (1993-03-01), None
patent: 199 35 471 (2001-02-01), None
patent: 2-311551 (1990-12-01), None
patent: WO 01/02506 (2001-01-01), None
International Search Report completed Jul. 28, 2003 and issued to a related foreign application.

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