Patent ID: 7790790

Claim:
A flame retardant thermoplastic elastomer composition comprising; (a) about 70 to about 99 weight percent of a melt-processable thermoplastic vulcanizate composition comprising: (i) from about 15 to about 75 weight percent of at least one thermoplastic polyester continuous phase; and (ii) from about 25 to about 85 weight percent of at least one poly(meth)acrylate or polyethylene/(meth)acrylate rubber disperse phase wherein said rubber is dynamically cross-linked with at least one peroxide free-radical initiator and at least one organic multiolefinic co-agent; and (b) about 1 to about 30 weight percent, of at least one flame retardant comprising a phosphinate of the formula (I) and/or a disphosphinate of the formula (II) and/or polymers of thereof wherein R 1 and R 2 are identical or different and are hydrogen, C 1 -C 6 alkyl, linear or branched, and/or aryl; R 3 is C 1 -C 10 -alkylene, linear or branched, C 6 -C 10 -arylene, -alkylarylene or -arylalkylene; M is calcium ions, magnesium ions, aluminum ions, and/or zinc ions, m is 2 to 3; n is 1 or 3; and x is 1 or 2, wherein the weight percentages of (a) and (b) are based on the total weight of (a)+(b) and the weight percentages of (i) and (ii) are based on the total weight of (i)+(ii).