Tough and rigid mixtures of alpha-methylstyrene-acrylnitrile copolymers and of block copolymers

US8158722B2 · kind B2 · utility

Assignee

• Styrolution GmbH · DE

Inventors

• Konrad Knoll · Mannheim, DE
• Koch Jürgen · Schifferstadt, DE
• Piyada Charoensirisomboon · Mannheim, DE

Key dates

• Filing date: Mar 4, 2009
• Grant date: Apr 17, 2012
• Expiry date: Apr 13, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/139
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Composition comprising at least one copolymer A composed of at least one alkylated styrene, of acrylonitrile, and, if appropriate, of at least one further monomer, at least one block copolymer B which has at least one block forming a hard phase and composed of at least one vinylaromatic monomer and has at least one block forming a soft phase and composed of at least one vinylaromatic monomer and of at least one diene, and at least one further copolymer C, and, if appropriate, one polymer D, where the copolymer C is at least one triblock copolymer composed of a first block composed of at least one vinylaromatic monomer, of a second block composed of at least one diene, and of a third block composed of at least one methyl methacrylate monomer, or comprising at least 50% by weight of methyl methacrylate, and the polymer D is at least one styrene polymer selected from glass-clear and impact-resistant polystyrene. The present invention moreover relates to a process for the preparation of the inventive compositions, to the use of the inventive compositions for the production of moldings, of foils, of fibers, or of foams, to moldings, foils, fibers, or foams comprising the inventive compo…