COMPATIBILIZED BLENDS OF ALKENYL AROMATIC POLYMERS, &agr;-OLEFIN/VINYL OR VINYLIDENE AROMATIC AND/OR STERICALLY HINDERED ALIPHATIC OR CYCLOALIPHATIC VINYL OR VINYLIDENE INTERPOLYMERS AND STYRENIC BLOCK COPOLYMERS

US6476141B1 · kind B1 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Dane Chang · Sugar Land, US
• Yunwa W. Cheung · Fryeburg, US
• Charles F. Diehl · Durango, US
• Martin J. Guest · Lake Jackson, US
• Bharat I. Chaudhary · Pearland, US
• Andre J. Uzee · Baton Rouge, US

Key dates

• Filing date: Sep 27, 2001
• Grant date: Nov 5, 2002
• Expiry date: Sep 27, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A blend composition (and fabricated articles therefrom) comprising;(A) one or more alkenyl aromatic polymers;(B) one or more substantially random interpolymers comprising(1) polymer units derived from;(a) at least one vinyl or vinylidene aromatic monomer, or(b) at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, or(c) a combination of at least one aromatic vinyl or vinylidene monomer and at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, and(2) polymer units derived from at least one of ethylene and/or a C3-20 &agr;-olefin; and(3) polymer units derived from one or more of ethylenically unsaturated polymerizable monomers other than those derived from (1) and (2); and,(C) one or more compatibilizers;and wherein said blend has;a) a tensile strength greater than 1500 psi;b) a pull force test (⅛″ diameter) greater than 15 lb;c) a Shore A Hardness greater than 79;d) a cycle time in injection molding of less than 30 sec.