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US 4,065,517 AGranted
Flame retardant polysulfone composition
AssigneeNissan Chemical Industries, Ltd.
InventorsNaotake Okada, Takeshi Iwabuchi
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Abstract
A polysulfone composition comprises 1 to 20 wt. % of polyphosphonate having the formula ##STR1## WHEREIN X represents Br or Cl; Y represents a C.sub.1-8 alkylidene group or sulfone group; a and bare respectively integers of 1 to 4 and n is an integer of 2 to 100.
Claims3
A polyphosphonate-polyarylenepolyether polysulfone composition which comprises:
- 1 to 20 wt.% of a polyphosphonate having the formula:
- ##STR7## wherein X represents Br or Cl;
- Y represents a C.sub.1-8 alkylidene group or sulfone group;
- a and b are respectively integers of 1 to 4 and n is an integer of 2 to 100;
- and a polyarylenepolyether polysulfone of the formula:
- ##STR8## wherein n is an integer of 10 to 200;
- or a mixture thereof.
4 more elements
Dependencies are inferred from the claim text.