Graft polymers comprising polymers, containing alkylene oxide units, and ethylenically unsaturated compounds, their preparation and their use

US6048945A · kind A · utility

Assignee

• BASF SE

Inventors

• Walter Denzinger · Speyer, DE
• Martin Rubenacker · Altrip, DE
• Claudia Nilz · Rödersheim-Gronau, DE
• Primoz Lorencak · Ludwigshafen, DE
• Dietmar Monch · Weinheim, DE
• Rudolf Schuhmacher · Böhl-Iggelheim, DE
• Andreas Stange · Mannheim, DE

Key dates

• Filing date: Nov 3, 1997
• Grant date: Apr 11, 2000
• Expiry date: Nov 3, 2017

Classification

• Technology area (CPC D): Textiles; Paper
• CPC primary: D21H21/16
• WIPO field: Textile and paper machines
• WIPO sector: Mechanical engineering

Abstract

A graft polymer obtained by free radically polymerizing: PA1 (A) a monomer or monomer mixture comprising: PA2 (a) from 10-100% by weight of a N-vinylcarboxamide of the formula: ##STR1## where R.sup.1 and R.sup.2 are each H or C.sub.1 -C.sub.6 -alkyl, (b) from 0-90% by weight of at least one other monoethylenically unsaturated monomer which is copolymerizable with (a), and PA2 (c) from 0-5% by weight of at least one monomer having at least two ethylenically unsaturated nonconjugated double bonds in the molecule, in the presence of PA1 (B) a polytetrahydrofuran or a polymer which contains at least 3 units of a C.sub.2 -C.sub.4 alkylene oxide and is a hornopolymer of C.sub.2-4 -alkylene oxide having two free terminal OH groups or random or block copolymers of C.sub.2-4 -alkylene oxides having two free terminal OH groups or the reaction products of C.sub.2-4 -alkylene oxides with phenols, amines or fatty carboxylic acids, in a weight ratio (A):(B) ranging from 95:5 to 10:80, some or all of the amide groups having been eliminated by hydrolysis.