Production of organopolysiloxane copolymers with a phenyl ether solvent
US5430097A · kind A · utility
8Cited by
6References
9Claims
0Family size
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Key dates
| Filing date | Dec 23, 1993 |
| Grant date | Jul 4, 1995 |
| Priority date | — |
| Expiry date | Dec 23, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2383/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved process is provided for the preparation of siloxane-oxyalkylene block copolymer surfactant compositions which utilize a hydrosilylation reaction with a phenyl ether as the reaction solvent. The reaction solvent need not be removed from the block copolymer, particularly when the block copolymer is used as a surfactant for polyurethane foam formulations. Ethylene glycol phenyl ether is the preferred reaction solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.