Elastomer-modified epoxy siloxane compositions

Details Elastomer-modified epoxy siloxane compositions Elastomer-modified epoxy siloxane compositions

2007-01-09

2007-01-09

Peng, Kuo-Liang (Department: 1712)

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S476000, C525S479000, C525S187000, C525S523000, C528S012000, C528S017000, C528S018000, C528S014000, C528S034000, C528S038000, C528S411000, C528S412000, C528S413000, C528S414000, C528S409000

Reexamination Certificate

active

10695482

ABSTRACT:
Elastomer-modified Epoxy-polysiloxane compositions of this invention are prepared by combining a silicone intermediate, with an epoxy resin, an elastomeric resinous intermediate, a polyfunctional amine, an optional organometallic catalyst, and optional fillers, pigments, and processing agents. The composition is prepared using a sufficient amount of water to promote hydrolysis of the polysiloxane and the polycondensation of the silanols produced by such hydrolysis. In its cured form, the epoxy-polysiloxane composition exists as a uniformly dispersed arrangement of linear epoxy chain fragments that are cross-linked with a continuous polysiloxane polymer chain, wherein either or both of the epoxy and/or polysiloxane polymers are elastomer modified to provide coatings and floorings having significantly improved properties of impact resistance, flexibility, crack resistance, and abrasion resistance with compared to conventional epoxy systems.

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