Aqueous dispersion of epoxy resin and blend of epoxy resin-polyoxyalkylene amines

US6077884A · kind A · utility

Assignee

• Sika Chemie GmbH · DE

Inventors

• Michael Hess · Stuttgart, DE
• Horst Schneider · Meersburg, DE
• Michael Hiller · Brighton, US

Key dates

• Filing date: Sep 25, 1998
• Grant date: Jun 20, 2000
• Expiry date: Sep 25, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2200/0647
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A blend of epoxy-amine adducts are useful as emulsifiers of aqueous epoxy resin dispersions comprises (A-1) one or more epoxy-amine adduct(s) obtained by the reaction of (i) one or more aromatic, cycloaliphatic or novolac epoxy compound(s) and (ii) one or more amine-terminated polyalkylene glycol(s) having a molecular weight of from 700-5000 and an ethyleneoxide content of at least 60% by weight in an equivalent ratio of amine-terminated polyalkylene glycol(s) to epoxy compound(s) of from 0.01:1 to 0.9:1; (A-2) one or more epoxy-amine adduct(s) derived from the reaction of (i) one or more aliphatic epoxy compound(s) and (ii) one or more amine-terminated polyalkylene glycol(s) having a molecular weight of from 700-5000 and an ethyleneoxide content of at least 60% by weight in an equivalent ratio of amine-terminated polyalkylene glycol(s) to epoxy compound(s) of from 0.01:1 to 0.9:1; (B-1) aromatic, cycloaliphatic or novolac polyglycidyl ethers; (B-2) optionally, polyglycidyl esters of aromatic or cycloaliphatic polycarboxylic acids; and (C) optionally, at least one of reactive thinners, pigments, filler or other addtitives.