Impact-resistant poly(arylene ether) resins with improved clarity

摘要

The present invention is directed to a composition that includes a poly(arylene ether), a radial block copolymer of an alkenyl aromatic monomer and a conjugated diene, a linear block copolymer of an alkenyl aromatic monomer and a conjugated diene, one or more optical enhancing agents, and a hydrocarbon resin. The composition is characterized by at least one of the following properties: a multiaxial impact of at least 20 joules as measured by ASTM D 3763-08, a percent haze of 15 percent or less as measured by ASTM D 1003-00, and a percent transmittance of 75 percent or more as measured by ASTM D 1003-00.

主权项

1. A composition comprising:
(a) a poly(arylene ether); (b1) a radial block copolymer of an alkenyl aromatic monomer and a conjugated diene; wherein the radial block copolymer has 50 to 70 weight percent of repeating units derived from the alkenyl aromatic monomer and a number average molecular weight of 50,000 to 70,000 atomic units; (b2) a linear block copolymer of an alkenyl aromatic monomer and a conjugated diene; wherein the linear block copolymer has 55 to 70 weight percent of repeating units derived from the alkenyl aromatic monomer; wherein the ratio of (b1) to (b2) is 0.5:1 to 4:1; (c) one or more optical enhancing agents; and (d) a hydrocarbon resin selected from the group consisting of hydrogenated alicyclic hydrocarbon resins and hydrogenated terpene resins; wherein the composition is characterized by one or more of the following properties:
(i) a multiaxial impact of at least 20 J as measured by ASTM D 3763-08;(ii) a percent haze of 15 percent or less as measured by ASTM D 1003-00; and(iii) a percent transmittance of 75 percent or more as measured by ASTM D 1003-00.