Epoxy resin compositions

Details Epoxy resin compositions Epoxy resin compositions

1981-07-23

1983-01-11

Lieberman, Paul

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

Synthetic resins

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

523400, 525486, C08L 6112, C08L 6300

Patent

active

043682995

ABSTRACT:
A composition comprising an epoxy resin having at least two epoxy groups in the molecule and a hardener selected from the group consisting of (1) a resorcinol novolak having an unreacted resorcinol content of 10% by weight or less, (2) a mixed novolak of a resorcinol novolak and a monohydric phenol novolak having a total unreacted resorcinol and monohydric phenol content of 8% by weight or less, and (3) a resorcinol/monohydric phenol polycondensation novolak having a polycondensed resorcinol content of 30 mole % or more and a total unreacted resorcinol and monohydric phenol content of 8% by weight or less.
The composition is useful for moldings, laminates, paints, and adhesives with excellent thermal resistance, durability and electrical characteristics.

REFERENCES:
patent: 3472915 (1969-10-01), Rider
patent: 3493630 (1970-02-01), Salewsky
patent: 3563850 (1971-02-01), Stackhouse

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