AQUEOUS ISOCYANATE EMULSIONS AND THEIR USE AS BINDERS IN A PROCESS FOR THE PRODUCTION OF SHAPED ARTICLES

• Main Authors: SCHOLL, HANS-JOACHIM, REIFF, HELMUT, SACHS, HANNS I
• Format: Patent
• Language: English; French
• Published: 23.08.1983
• Edition: 3
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

The present invention relates to aqueous isocyanate emulsions and their use as binders in the production of shaped articles. These emulsions contain (A) from 80 to 20% by weight, based on the total emulsion, of water; (B) from 18 to 79% by weight, based on the total emulsion, of an organic polyisocyanate; (C) from 0.5 to 15 % by weight, based on the total emulsion of a sulfonic acid corresponding to the formula: R1--- (SC3H)n wherein n represents the integers 1 or 2, and R1 represents an aromatic hydrocarbon radical containing from 6 to 14 carbon atoms, an aliphatic hydrocarbon radical containing from 10 to 18 carbon atoms, a cycloaliphatic hydrocarbon radical containing from 6 to 15 carbon atoms, an araliphatic hydrocarbon radical containing from 7 to 15 carbon atoms or an alkaromatic hydrocarbon radical containing from 7 to 24 carbon atoms; and (D) from 0 to 10% by weight, based on the polyisocyanate, of a nonionic, surfaceactive agent as an emulsifier.