Haze free polyether polyol compositions and a method for their preparation
US6191315A · kind A · utility
5Cited by
10References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 11, 1999 |
| Grant date | Feb 20, 2001 |
| Priority date | — |
| Expiry date | Feb 11, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/30
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Most generally, the invention provides a method for making a neutralized polyether polyol, comprising the steps of PA1 a) Polymerizing one or more alkylene oxides in the presence of an alkaline catalyst to form a polyalkylene oxide intermediate; and PA1 b) Neutralizing the intermediate, after the polymerization step a) is complete, with an organic acid of general formula ##STR1## where R1 is hydrogen, methyl, or ethyl; R2 is methyl or ethyl; and R3 is an alkyl, aryl, or aralkyl group containing one to twelve carbon atoms. The invention also comprises the novel compositions made by the above process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.