Water-emulsifiable isocyanates with improved properties

US11518907B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Frederic Lucas · Offenburg, DE
• Rabie Al-Hellani · Ludwigshafen, DE

Key dates

• Filing date: Dec 5, 2017
• Grant date: Dec 6, 2022
• Expiry date: Nov 6, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G18/8064
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A mixture of water-emulsifiable isocyanates is described. The mixture contains (A) at least one polyisocyanate (a), (B) at least one emulsifier obtained by reacting at least one polyisocyanate with at least one polyether alcohol having a molecular weight of less than 400 g/mol, (C) at least one emulsifier obtained by reacting at least one polyisocyanate with at least one polyether alcohol having a molecular weight of greater than 450 g/mol, and (D) optionally at least one emulsifier obtained by reacting a polyisocyanate with at least one compound (d) having at least one hydrophilic, non-isocyanate-reactive group and precisely one isocyanate-reactive group (group D2). The weight ratio of component (B) to component (C) in the mixture is from 30:70 to 70:30, preferably from 40:60 to 60:40.