Water-soluble air-drying alkyd resins, process for their preparation and their use as bases for non-yellowing lacquers

US4346044A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Rolf Dhein · Krefeld, DE
• Jochen Schoeps · Krefeld, DE
• Rolf Kuchenmeister

Key dates

• Filing date: Jul 11, 1980
• Grant date: Aug 24, 1982
• Expiry date: Jul 11, 2000

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/20
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Air-drying alkyd resins which are in the form of neutralized semi-esters of hexahydrophthalic acid anhydride constitute an excellent basis for coatings which undergo virtually no yellowing and which, even when aged by heat, show a high constancy of color.