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US 10,457,770 B2Granted
Surfactants for polyurethane foams
AssigneeDow Global Technologies LLC
InventorsJiawen Xiong, Dachao Li, Jianxin Zhang, David Hong-fei Guo, Beilei Wang, Wei Liu
Life of this patent
Estimating the term…
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.
Claims7
A surfactant having the formula:
- 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 1 to 20, and R2 is a moiety selected from the group consisting of:
- where m is an integer from 0 to 4.
Dependencies are inferred from the claim text.