Process for the preparation of curable binder combinations, the combinations obtainable by this process and the use thereof

US5089565A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Harald Blum · Wachtendonk, DE
• Christian Wamprecht · Neuss, DE
• Josef Pedain · Cologne, DE
• Michael Sonntag · Odenthal, DE

Key dates

• Filing date: May 30, 1989
• Grant date: Feb 18, 1992
• Expiry date: May 30, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/35
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A moisture-curing binder composition useful in paints and other coating compositions is prepared by mixing or mixing with spontaneous reaction in the absence of moisture PA0 A) 30 to 99 parts by weight of at least one compound containing at least two intramolecular carboxylic anhydride groups and PA0 B) 1 to 70 parts by weight of organic compounds having blocked amino groups, wherein B) PA0 comprises organic compounds containing hydrogen atoms which are reactive to acid anhydride groups and containing bicyclic amide acetal or bicyclic amide groups or both, wherein the ratios of the amounts of the individual components are chosen such that, by taking into account the addition reaction which occurs spontaneously between components A) and B) in the absence of moisture, in the resulting mixture 0.25 to 50 anhydride groups are present per bicyclic amide acetal and bicyclic amide aminal group.