Block copolymers of acrylate and methacrylate units

US5399620A · kind A · utility

Assignee

• BASF SE

Inventors

• Norbert Niessner · Friedelsheim, DE
• Friedrich Seitz · Friedelsheim, DE

Key dates

• Filing date: Sep 16, 1993
• Grant date: Mar 21, 1995
• Expiry date: Sep 16, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L101/005
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Linear, star or dendrimeric block copolymers are composed of from 10 to 90% by weight of at least one block of one or more acrylates of an alcohol of 1 to 8 carbon atoms and from 10 to 90% by weight of at least one block of one or more methacrylates of an alcohol of 1 to 8 carbon atoms, each block having a number average molecular weight of from 1,000 to 100,000 g/mol and the quotient M.sub.w /M.sub.n (weight average/number average) of each block being less than 2, and said block copolymers may be blended with styrene copolymers or acrylate copolymers and, if required, acrylate rubbers.