Production of flame resistant, halogen-free polyurethane/polyureas

US5639800A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Wulf von Bonin · Leverkusen, DE
• Hanns P. Muller · Leverkusen, DE
• Gert Jabs

Key dates

• Filing date: Mar 28, 1996
• Grant date: Jun 17, 1997
• Expiry date: Mar 28, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/55
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

In the production of a flame resistant, halogen-free polyurethane/polyurea from a polyisocyanate and polyol, wherein to the mixture of polyisocyanate and polyol there is added an amine adduct of an acidic metal salt of the formula EQU A.sub.1-3 B.sub.0-12 P.sub.3-9 N.sub.4-12 M.sub.0-9 xH.sub.2 O(I), in which PA1 A denotes at least one hydroxide or oxide of a metal selected from the group consisting of aluminum, magnesium, calcium and zinc, PA1 B denotes o-boric acid, PA1 P denotes an acid containing phosphorus, PA1 N denotes at least one of an amine or ammonia, PA1 M denotes an alkali metal hydroxide and PA1 x denotes an integer from 0 to 90. The products are especially flame resistant foams.