Polyester polyols and their use in two-component polyurethane lacquers

US6162891A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Christian Wamprecht · Neuss, DE
• Michael Sonntag · Odenthal, DE
• Jurgen Meixner · Krefeld, DE

Key dates

• Filing date: Dec 9, 1994
• Grant date: Dec 19, 2000
• Expiry date: Dec 9, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/52
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to polyester polyols having hydroxyl numbers of 175 to 520 which are the reaction products of PA1 a) 50 to 60 mole % of a polyol component containing PA2 (i) 0 to 39 mole % of one or more dihydric aliphatic or cycloaliphatic alcohols having at least 2 carbon atoms other than neopentyl glycol, PA2 (ii) 20 to 59 mole % of neopentyl glycol and PA2 (iii) 41 to 80 mole % of one or more at least trihydric aliphatic alcohols containing at least 3 carbon atoms and PA1 b) 40 to 50 mole % of a dicarboxylic acid component containing PA2 (iv) 0 to 60 mole % of one or more aliphatic or cycloaliphatic, saturated or unsaturated dicarboxylic acids or their anhydrides having at least 2 carbon atoms other than fumaric acid, itaconic acid and maleic acid or their anhydrides and PA2 (v) 40 to 100 mole % of one or more of fumaric acid, itaconic acid, maleic acid or their anhydrides, PA1 wherein the percentages set forth in a) and b) each add up to 100. The present invention also relates to the use of these polyester polyols, optionally in admixture with other organic polyhydroxyl compounds, as a binder component for two-component polyurethane lacquers also containing lacqu…