Water soluble nonionic cellulose ethers and their use in paints

US5140099A · kind A · utility

Assignee

• Berol Nobel AB · SE

Inventors

• Peter Bostrom · Ytterby, SE
• Ingemar Ingvarsson · Stenungsund, SE
• Kenneth Sundberg · Stenungsund, SE

Key dates

• Filing date: Mar 12, 1990
• Grant date: Aug 18, 1992
• Expiry date: Mar 12, 2010

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L1/26
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Water soluble nonionic cellulose ethers are provided, containing mixed alkylphenoxyalkyleneoxy-2-hydroxy propylene groups, having hydrophilic units composed of (a) alkyleneoxy groups of two or three carbon atoms, in a number from zero to about six, selected from --CH.sub.2 CH.sub.2 O--; ##STR1## and --CH.sub.2 CH.sub.2 CH.sub.2 O--; and (b) one 2-hydroxy propylene group, together with hydrophobic units which are alkylphenoxy groups of the formula ##STR2## where R and R.sub.4 are hydrocarbon groups having from about four to about thirty carbon atoms, preferably from about nine to about eighteen carbon atoms; n.sub.1 is 0 or 1; connected linearly in a group of the general formula: ##STR3## Also provided is a class of cellulose ethers having similar hydrophilic units and hydrophobic units which are alkyloxyalkyleneoxy groups of the formula EQU R--O-- III where R is an alkyl group having from about four to about thirty carbon atoms, preferably from about nine to about eighteen carbon atoms, connected linearly in a group of the general formula ##STR4## as well as water-base paints with excellent properties containing such cellulose ethers.