Patent ID: 6201067
Filing Date: 2001-03-13
Classification: C08L,C09J

Abstract:
A blend of polymeric materials having improved high temperature serviceability consisting essentially of(A) from about 1 to about 99 weight percent based on the combined weight of components (A) and (B) of at least one interpolymer produced from polymerizing a monomer mixture comprising:(1) from about 5 to about 65 mole percent of (a) at least one vinylidene aromatic monomer, or (b) a combination of at least one vinylidene aromatic monomer and at least one hindered aliphatic vinylidene monomer, and(2) from about 35 to about 95 mole percent of at least one aliphatic .alpha.-olefin having from about 2 to about 20 carbon atoms; and(B) from about 1 to about 99 weight percent based on the combined weight of components (A) and (B) of a composition comprising:(1) from about 1 to about 100 weight percent based on the combined weight of components (B1) and (B2) of an aromatic polyether; and(2) from 0 to about 99 weight percent based on the combined weight of components (B1) and (B2) of(a) at least one homopolymer of a vinylidene aromatic monomer, or(b) at least one interpolymer of one or more vinylidene aromatic monomers, or(c) at least one interpolymer of at least one vinylidene aromatic monomer and at least one hindered aliphatic vinylidene monomers, or(d) at least one of (B1) or (B2)(a-c) further comprising an impact modifier, or(e) a combination of any two or more of (B1) and (B2)(a-d),(C) from 0 to about 50 weight percent of at least one optional impact modifier which is a linear or crosslinked polymer or copolymer selected from the group consisting of natural rubber; polybutadiene; polyisoprene; random copolymers of a vinyl aromatic monomer and a conjugated diene; diblock and triblock copolymers of a vinyl aromatic monomer and a conjugated diene; hydrogenated random and block copolymers of a vinyl aromatic monomer with conjugated dienes; ethylene-acrylic acid copolymers and ethylene/.alpha.-olefin copolymers, and(D) from 0 to about 50 weight percent of at least one optional processing aidwherein the blend composition is characterized as having a ratio of G'(60.degree. C.) to G'(120.degree.) of less than or equal to 5.62, as determined using a dynamic mechanical spectrometer.