Patent ID: 9567424
Date: 2017-02-14
CPC Classifications: C08G,C08L,C09J

Claim:
1. A method for producing a liquid rubber containing an epoxy group-terminated impact-resistance modifier, comprising the reaction of an isocyanate-terminated prepolymer of formula (II) wherein X Y Y m=1 or 2; and n=2, 3 or 4; with at least one epoxy resin, comprising an epoxy compound containing a primary or secondary hydroxyl group of formula (III) wherein Y 3 represents a radical of an aliphatic, cycloaliphatic, aromatic or araliphatic epoxy containing a primary or secondary hydroxyl group after removal of the epoxide groups and the primary or secondary hydroxyl group; and q=1, 2 or 3; in the presence of at least one compound selected from the group consisting of anhydrides and aldehydes as glycol scavenger, wherein the isocyanate-terminated prepolymer of formula (II), the epoxy resin and the glycol scavenger are mixed with one another or the epoxy resin is reacted with the glycol scavenger before they are mixed with the isocyanate-terminated prepolymer of formula (II).