Abstract: A soft foam having an Asker C hardness of less than about 65, comprising; (A) from about 30 to about 70 percent by weight (based on the combined weight of Components A and B) of one or more alkenyl aromatic polymers and wherein at least one of said alkenyl aromatic polymers has a molecular weight (Mw) of from about 100,000 to about 500,000; and (B) from about 30 to about 70 percent by weight (based on the combined weight of Components A and B) of one or more substantially random interpolymers having an I2 of about 0.1 to about 50 g/10 min, an Mw/Mn of about 1.

Abstract: A fabricated article other than a film comprising a thermoplastic blend prepared from polymeric materials consisting of; (A) from 1 to 99 weight percent of at least one interpolymer made from monomer components comprising (1) from 0.5 to 65 mole percent of (a) at least one aromatic vinylidene monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinylidene monomer, or (c) a combination of at least one aromatic vinylidene monomer and at least one hindered aliphatic or cycloaliphatic vinylidene monomer, and (2) from 99.5 to 35 mole percent of at least one aliphatic &agr;-olefin having from 2 to 20 carbon atoms; and (B) from 99 to 1 weight percent of at least one polymer made from monomer components comprising at least one &agr;-olefin having from 2 to 20 carbon atoms. These articles possess improved properties when compared to the properties of articles derived from the individual polymers comprising the blend.

Abstract: A soft foam having an Asker C hardness of less than about 65, comprising;(A) from about 30 to about 70 percent by weight (based on the combined weight of Components A and B) of one or more alkenyl aromatic polymers and wherein at least one of said alkenyl aromatic polymers has a molecular weight (M.sub.w) of from about 100,000 to about 500,000; and(B) from about 30 to about 70 percent by weight (based on the combined weight of Components A and B) of one or more substantially random interpolymers; and(C) optionally, one or more nucleating agents; and(D) optionally, one or more other additives; and(E) one or more blowing agents present in a total amount of from about 0.4 to about 5.0 gram-moles per kilogram (based on the combined weight of Components A and B).

Abstract: This invention pertains to a composition and a process for preparing a closed cell alkenyl aromatic polymer foam having enlarged cell size, comprising one or more alkenyl aromatic polymers, one or more substantially random interpolymers, one or more blowing agents having zero ozone depletion potential and optionally one or more co-blowing agents, and optionally, one or more nucleating agents and optionally, one or more other additives.This combination allows the manufacture of closed cell, low density alkenyl aromatic polymer foams of enlarged cell size, when blowing agents of relatively high nucleation potential are employed. When such blowing agents are used with alkenyl aromatic polymers in the absence of the substantially random interpolymers, small cell foams result.