Modified resins made from the reaction of epoxidized esters and resin acids

US5770662A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien (Henkel KGAA) · DE

Inventors

• Ulrich Eicken · Korschenbroich, DE
• Manfred Gorzinski · Düsseldorf, DE
• Paul Birnbrich · Solingen, DE
• Thomas Tamcke · Hilden, DE

Key dates

• Filing date: Sep 18, 1996
• Grant date: Jun 23, 1998
• Expiry date: Sep 18, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J11/08
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A composition of matter comprising a resin obtained by a process comprising reacting at an elevated temperature an epoxidized ester of an unsaturated fatty acid with an aliphatic alcohol with a resin acid is provided. The equivalent ratio of epoxy groups of said epoxidized ester to carboxyl groups of said resin acid is in the range from 1.5:1 to 0.01:1. The resin is useful as a tackifier for adhesives and has a reduced tendency to crystallize.