SELF-RELEASING BINDER BASED ON ISOCYANATE AND THE USE THEREOF IN A PROCESS FOR THE PRODUCTION OF MOLDED ARTICLES

• Main Authors: SCHOLL, HANS-JOACHIM, SACHS, HANNS I, LOEW, GUENTHER, JABS, GERT
• Format: Patent
• Language: English; French
• Published: 26.07.1983
• 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; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The present invention relates to a substantially anhydrous binder having a self-releasing effect for the production of pressed articles comprising: (A) a polyisocyanate; and (B) a sulfonic acid corresponding to the general formula: wherein n represents an integer of 1 or 2; R represents an aromatic hydrocarbon radical having from 6 to 14 carbon atoms, an aliphatic hydrocarbon radical having from 10 to 18 carbon atoms, a cycloaliphatic hydrocarbon radical having from 6 to 15 carbon atoms, an araliphatic hydrocarbon radical having from 7 to 15 carbon atoms or an alkaromatic hydrocarbon radical having from 7 to 24 carbon atoms; and the equivalent ratio of the components (A) and (B) is 100:0.5 to 100:20 The invention is also directed to the use of such binders in the production of shaped articles by the hot pressing of a wide variety of organic and/or inorganic materials