Fire retardant casting resin molding compounds based on epoxy re

Details Fire retardant casting resin molding compounds based on epoxy re Fire retardant casting resin molding compounds based on epoxy re

1992-11-05

1993-11-16

Krass, Frederick F.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523427, 523428, 523429, 523458, 525523, 525525, 525526, 525530, 525531, 525532, 525533, 528 89, 528 94, 528103, 528108, 528167, 528168, 528220, 528228, 528229, 528287, 528321, 528337, 528361, 528365, 528366, 528398, C08G 5940, C08G 6500

Patent

active

052624560

ABSTRACT:
A halogen free casting resin suitable for covering electron devices with a fire retardant material contains an acidic ester of an hydroxy-functional phosphor compound and an organic anhydride. A stable mixture can be generated from the acidic ester and the hardener component of the casting resin, and further used for the hardening of epoxides resins. The acidic ester is chemically integrated in the epoxide resin matrix in a stable mixture, thereby improving the long term fire-retardancy of the casting resin molding compound without increasing the volatility of the mixture.

REFERENCES:
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patent: 4048141 (1977-09-01), Doorakian et al.
patent: 4380571 (1983-04-01), Fretz, Jr. et al.
patent: 4632973 (1986-12-01), Beck

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