Flame retardant resinous compositions and process

Details Flame retardant resinous compositions and process Flame retardant resinous compositions and process

2011-03-29

2011-03-29

Choi, Ling-Siu (Department: 1762)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S052000

Reexamination Certificate

active

07915329

ABSTRACT:
Disclosed is a flame-retardant composition comprising (i) 40-66 wt. % alkenyl aromatic resin, (ii) 9-33 wt. % ammonium polyphosphate and (iii) 14-40 wt. % starch, wherein all weights are based on the total weight of the composition and wherein ammonium polyphosphate and starch are present in a weight % ratio effective to provide molded articles exhibiting at least V-1 flame rating as determined according to the UL-94 protocol. Processes to prepare the composition and articles comprising a composition of the invention are also disclosed.

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