Aqueous dispersions of epoxide compounds

US4318832A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Karl Zabrocki · Waldbröl, DE
• Hans Schulze · Cologne, DE
• Franz Weider · Leverkusen, DE
• Wolfgang Wellner · Bensberg, DE
• Wolfgang Schartau · Odenthal, DE

Key dates

• Filing date: Aug 25, 1980
• Grant date: Mar 9, 1982
• Expiry date: Aug 25, 2000

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/2938
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An aqueous dispersion of an epoxide compound comprising water, one or more water-insoluble 1,2-epoxide compounds having mol weights Mn of from between 150 and 3000 and an emulsifying system comprising: PA0 (A) from 9.5 to 35% by weight of at least one polyester resin containing carboxyl groups having an acid number of from 10 to 50 mg KOH/g substance and a molecular weight Mn of from 400 to 4000, at least 30% of the carboxyl groups being neutralized; PA0 (B) from 0.5 to 25% by weight of at least one emulsifier having an HLB-value.gtoreq.15 and represented by the formula: ##STR1## wherein R.sup.1 represents a C.sub.1 -C.sub.16 -alkyl group, PA1 R.sup.2 represents H or a C.sub.1 -C.sub.16 -alkyl group, PA1 R.sup.3 represents H or methyl, PA1 n represents a number from 10 to 50; PA0 (C) from 40 to 90% by weight of at least one emulsifier having an HLB-value of 15 and the general formula: ##STR2## wherein R.sup.2 is previously defined, R.sup.4 represents C.sub.1 -C.sub.4 -alkyl group, x is a number of from 2 to 3, and m is a number from 15 to 100, the total of the percentage contents from A, B, and C being 100%.