Aqueous synthetic resin dispersions

US5244950A · kind A · utility

Assignee

• BASF SE

Inventors

• Bernhard Schlarb · Ludwigshafen, DE
• Gerhard Auchter · Bad Dürkheim, DE
• Peter Pfoehler · Speyer, DE

Key dates

• Filing date: Oct 15, 1991
• Grant date: Sep 14, 1993
• Expiry date: Oct 15, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2666/44
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An aqueous synthetic resin dispersion consisting of (A) from 35 to 60% by weight of a synthetic resin prepared by free radical solution polymerization of a monomer mixture A1 and monomer mixture A2, wherein mixture A1 is (a) from 1.5 to 15% by weight of at least one C.sub.3-5 unsaturated monocarboxylic acid, maleic or itaconic acid or anhydride and half-esters of maleic acid or itaconic acid with a C.sub.1-8 ankanol or with glycol monoethers, (b) from 65 to 98.5% by weight of at least one C.sub.1-10 alkyl (meth)acrylate, and optionally at least one C.sub.11-20 alkyl (meth)acrylate (III), vinyl aromatic monomer (IV), mercaptosilane (V), and copolymerizable monomer (VI), and mixture A2 is (a) from 60 to 100% by weight of at least one monomer II, and optionally at least one monomer III, IV or VI and compound (V), with the proviso that more than 65% by weight of the sum total of A1 and A2 is accounted for by monomers II and an amount of compound V which differs from ) and is incorporated in the copolymer; PA1 (B) from 0.05 to 5% by weight of at least one epoxy group containing silane; and PA1 (C) at least one of ammonia and an organic amine; with the remainder being water and wherein t…