Flame-retardant resin composition

Details Flame-retardant resin composition Flame-retardant resin composition

1997-01-22

1999-11-30

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524141, 524143, C08K 552

Patent

active

059944331

ABSTRACT:
A flame-retardant of an aromatic phosphoric acid ester of formula (I) and a fluororesin such as polytetrafluoroethylene, are added to a mixture of an aromatic polycarbonate and a styrenic resin: ##STR1## wherein (i) at least one of R.sup.1 to R.sup.4 is a 2,3-dialkylphenyl group, a 3,4-dialkylphenyl group or a 3,5-dialkylphenyl group each substituted with alkyl groups each having 1 to 3 carbon atoms, A is a phenylene group, n denotes an integer of 0 to 5, and R.sup.1 to R.sup.4 contain the dialkylphenyl group and a monoalkylphenyl group in a ratio of the former/the latter is 50/50 to 90/10 (% by weight); or (ii) at least one of R.sup.1 to R.sup.4 is a phenyl group substituted with 1 to 5 alkyl groups each having 1 to 4 carbon atoms, A is 1,3-phenylene group and n denotes an integer of 1 to 5. The flame-retardant may be a mixture of the compound (i) and the compound (ii).

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