Thermally stable water-soluble polymer which is crosslinkable at high temperatures

US7696304B2 · kind B2 · utility

Assignee

• Clariant Produkte (Deutschland) GmbH · DE

Inventors

• Christoph Kayser · Mainz, DE
• Gernold Botthof · Kirtorf, DE
• Karl Heinz Heier · Frankfurt am Main, DE
• Aranka Tardi · Neuberg, DE
• Matthias Krull · Harxheim, DE
• Michael Schaefer · Heidenau, DE

Key dates

• Filing date: Jul 20, 2005
• Grant date: Apr 13, 2010
• Expiry date: Nov 17, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K8/508
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a copolymer containing: i) 80-90% by weight of one or more structural units of the formula A, where R1 is hydrogen or methyl, R2 is C2-C10-alkylene, and Me+ is an ammonium or an alkali metal ion; ii) from 1 to 10% by weight of one or more structural units of the formula B where R3 and R4 are each independently hydrogen, methyl or ethyl; iii) from 1 to 10% by weight of one or more structural units of the formula C, where n is a number from 1 to 6; iv) from 0.1 to 5% by weight of structural units of the formula D where X is hydrogen, an ammonium ion or an alkali metal ion; and optionally, v) from 0 to 10% by weight of one or more structural units of the formula E, where R5 is hydrogen, methyl and/or ethyl, with the proviso that the content in the copolymers of structural units B) and C) is from 6 to 15% by weight.