Block copolymers having a polydimethylsiloxane block

US10301434B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Lothar Alexander Engelbrecht · Berlin, DE
• Frank Oliver Heinrich Pirrung · Ludwigshafen am Rhein, DE
• Clemens Auschra · Glückstadt, DE
• Ralf Knischka · Neustadt, DE
• Reiner Kranwetvogel · Haßloch, DE

Key dates

• Filing date: Jan 17, 2014
• Grant date: May 28, 2019
• Expiry date: Sep 2, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D183/10
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to novel block copolymers of general formula (I). The invention further relates to a method for producing such block copolymers and to the use of such block copolymers, particularly as additives in liquid coating-agent compositions. A{X—[O—C(O)NH—Y—NH—C(O)—O-M-B]k}n (I). In formula (I), the variables have the following meanings: n is a number in the range from 1 to 40 or 2 to 40, particularly 1 to 10 or 2 to 10 and especially 2 to 5; k is 1 or 2; A is a poly(dimethylsiloxane) block; B is a polymer block constructed of ethylenically unsaturated monomers, which optionally comprises a terminal group different from hydrogen; X is a bivalent or trivalent group having 2 to 20 C atoms, which is saturated or unsaturated and which optionally bears 1, 2, 3, or 4 substituents selected from among OH, COOH, CONH2, C1-C4 alkoxy, C1-C4 alkoxycarbonyl, and halogen; Y is a bivalent hydrocarbon group having 2 to 20 C atoms, which is saturated or unsaturated, and M is a chemical bond or C2-C10 alkylene, which can be interrupted by one or two groups not directly adjacent, selected from among O, C(═O)O, and (C═O)NH and which optionally bears 1, 2, 3, or 4 substituents sele…