Surfactants for polyurethane foams

US10457770B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Jiawen Xiong · Shanghai, CN
• Dachao Li · Royersford, US
• Jianxin Zhang · Acton, US
• David Hong Fei Guo · Shanghai, CN
• Beilei Wang · Meekrap-oord, CN
• Wei Liu · Shanghai, CN

Key dates

• Filing date: Dec 17, 2014
• Grant date: Oct 29, 2019
• Expiry date: Mar 20, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2375/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A surfactant and a method of forming the surfactant having the formula (I) where a is an integer from 1 to 10, b is an integer from 0 to 10, R1 is —CH3 or —H, n is an integer from 0 to 20, and R2 is a moiety selected from the group consisting of (II), (III), (IV), (V), (VI), (VII) or (VIII) where m is an integer from 0 to 4. The surfactant can be used in a method for preparing a rigid polyurethane foam.