Patent · US Expired

Use of polyacrylate-modified polysiloxanes as levelling agents in coating compositions

US7230051B2 · kind B2 · utility

8Cited by

18References

19Claims

0Family size

Assignee

BYK-CHEMIE GMBH · DE

Inventors

Bernd Göbelt · Wesel, DE
Alfred Bubat · Xanten, DE
Albert Frank · Xanten, DE
Karlheinz Haubennestel · Wesel, DE

Key dates

Filing date	Jun 19, 2003
Grant date	Jun 12, 2007
Priority date	—
Expiry date	Feb 3, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S525/934
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to the use of block copolymers as leveling agents for surface coatings, having a weight-average molecular weight of from 1000 to 100000. The leveling agent is a linear or branched block copolymer composed of a polysiloxane block and one or more blocks prepared from ethylenically unsaturated monomers by controlled free-radical addition polymerization.The invention also relates to coating compositions which comprise the leveling agent.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.