Patent ID: 7851559

Claim:
A soft, flame retardant thermoplastic elastomer composition, comprising: a styrenic block copolymer having a modulus of about 2.0 E+5 to about 7.0 E+6 Pa, wherein the styrenic block copolymer has at least one hard polymer block derived from at least two aromatic vinyl compound units, and has at least one soft polymer block, wherein the soft polymer block is derived from monomer units of one or more of an olefin monomer and a diene monomer, wherein the at least one hard polymer block ranges from about 10 percent to 40 percent by weight based on the total weight of the styrenic block copolymer; one or more of a) a polyolefin polymer, b) a polyolefin copolymer, the polyolefin copolymer derived from polymerization of two or more different monomers c) a polyacrylate polymer, and d) a polyacrylate copolymer, wherein when the a) polyolefin polymer or b) polyolefin copolymer or both the a) polyolefin polymer and the b) polyolefin copolymer are present the amount ranges from about 3 to about 60 parts based on 100 parts by weight of the styrenic block copolymer, and wherein when the c) polyacrylate polymer or d) polyacrylate copolymer or both the c) polyacrylate polymer and the d) polyacrylate copolymer are present the amount ranges from about 1 to about 100 parts based on 100 parts by weight of the styrenic block copolymer; a softener in an amount from about 5 to about 100 parts, based on 100 parts by weight of the styrenic block copolymer; and a surface coated composition comprising a surface coating agent encapsulating an inorganic phosphorus-containing flame retardant in an amount from about 5 to about 70 parts per 100 total parts by weight of the styrenic block copolymer; a) polyolefin polymer, b) polyolefin copolymer, c) polyacrylate polymer or d) polyacrylate copolymer, or any combination of said a) a polyolefin polymer, b) a polyolefin copolymer, c) a polyacrylate polymer, and d) a polyacrylate copolymer present; and softener, and wherein the thermoplastic elastomer composition has a Shore A hardness of about 40 to about 90.