Patent ID: 7847024
Filing Date: 2010-12-07
Classification: C08L

Abstract:
1. A thermoplastic composition, comprising: a styrenic block copolymer comprising at least one hard polymer block (A) and at least one soft polymer block (B), wherein at least one block of the at least one hard polymer block (A) is crosslinkable and independently includes at least one of (i) an alkyl styrene-derived functional unit and (ii) an aromatic vinyl compound unit having a functional group, wherein the soft polymer block (B) includes at least one repeat unit derived from an olefin or a diene; and a non-olefin thermoplastic polymer or copolymer in an amount from about 10 to about 1,500 parts per 100 parts by weight of the styrenic block copolymer, wherein the composition has less than 5 parts by weight of a polyolefin per 100 parts by weight of the styrenic block copolymer, wherein the non-olefin thermoplastic polymer includes one or more of polyamide, polyester, poly(phenylene oxide), poly(phenylene sulfide), poly(imide) and poly(sulfone), wherein the composition further includes a compatibilizer derived from reaction of at least a) a compatibilizer styrenic block copolymer, the compatibilizer styrenic block copolymer being different than the styrenic block copolymer, the compatibilizer styrenic block copolymer having one or more aromatic vinyl derived hard blocks, one or more soft blocks including at least one repeat unit derived from an olefin or a diene, and including one or more crosslinkable functional groups independently derived from a compound including a carboxylic acid group or an anhydride group and wherein the crosslinkable functional groups are different than the (i) an alkyl styrene-derived functional unit and (ii) an aromatic vinyl compound unit having a functional group; and b) the non-olefin thermoplastic polymer or copolymer, wherein the composition includes a crosslinking agent, and wherein the styrenic block copolymer is crosslinked in at least hard polymer block (A) through at least one of the (i) alkylstyrene-derived functional unit and the functional group of the (ii) aromatic vinyl compound unit, and in at least one soft polymer block (B).