Thermoplastic moulding materials based on acrylonitrile, styrene and butadiene

US9708483B2 · kind B2 · utility

Assignee

• INEOS STYROLUTION GROUP GMBH · DE

Inventors

• Norbert Niessner · Friedelsheim, DE
• SangJun AHN · Songpa-gu, KR
• Roland Walker · Osnabrück, DE
• Michel Pepers · Velden, NL
• Brian J. BANASZAK · Mannheim, DE
• Johannes Barth · Shanghai, CN
• Gisbert Michels · Leverkusen, DE
• Florian Patcas · Ludwigshafen, DE
• YoungHwa HWANG · Ulsan, KR
• Rudy VERSTRAETEN · Beerse, BE

Key dates

• Filing date: Apr 16, 2014
• Grant date: Jul 18, 2017
• Expiry date: Apr 16, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2207/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to thermoplastic moulding materials based on acrylonitrile-butadiene-styrene, comprising a SAN-polymer matrix and a graft copolymer, structured from an agglomerated butadiene rubber-graft base and a SAN-graft envelope. The agglomerated graft base has a bimodal particle size distribution of a fraction x) of non-agglomerated particles having a d50-value in the range from 80 to 120 nm and a fraction y) of agglomerated particles having a d50-value in the range from 350 to 550 nm and a polydispersity U of less than 0.28. The invention further relates to a method for producing the graft copolymer, wherein an acrylate copolymer having a polydispersity U of less than 0.27 and a d50-value of 100 to 150 nm is used for agglomeration. The invention further relates to the use of thermoplastic moulding materials for producing moulded parts.