Compositions and process

US4480070A · kind A · utility

Assignee

• The Upjohn Co. · US

Inventors

• Filippus Bosscher · Wagenborgen, NL
• John Penfold · Sankt Gallen, CH
• Klaus Reich · Loßburg, DE
• Albertus Zandvoort · Holwierde, NL

Key dates

• Filing date: Jun 27, 1983
• Grant date: Oct 30, 1984
• Expiry date: Jun 27, 2003

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L97/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Isocyanate compositions are disclosed which yield aqueous emulsions on admixture with water. The emulsions are sufficiently stable to permit employment as particle board binders and like uses. The compositions of the invention are derived by reaction of a polymethylene polyphenyl polyisocyanate with a particular group of polyethylene glycols which have been capped with a block of propylene oxide residues.