Curable epoxy resin compositions and process for production...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

Reexamination Certificate

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Details

C525S504000, C525S523000, C528S121000, C528S122000, C528S123000, C528S124000

Reexamination Certificate

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07378461

ABSTRACT:
The invention relates to (1) a curable epoxy resin composition comprising (A) a non-gel type amine-modified epoxy resin which is obtained by reacting an epoxy resin with a polyamine and (B) at least one of boric acid and boric ester, (2) a powder form of the curable epoxy resin composition and a process for its production, and (3) a process for production of heat-resistant laminated sheets by using the curable epoxy resin composition. The invention provides (1) a curable epoxy resin composition capable of giving a cured article having a high glass transition temperature and excellent mechanical properties, (2) a powder form of curable epoxy resin composition having a high glass transition temperature, excellent mechanical properties and excellent storage stability and a process for its production, and (3) heat-resistant laminated sheets made by using the curable epoxy resin compositions and having excellent heat resistance and mechanical properties.

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