Processes for preparing silicone surfactants containing cyclic siloxane pendants, and polyurethane foam using such surfactants
US5041468A · kind A · utility
6Cited by
10References
17Claims
0Family size
Assignee
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Key dates
| Filing date | May 23, 1989 |
| Grant date | Aug 20, 1991 |
| Priority date | — |
| Expiry date | May 23, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2483/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel siloxane-polyether polymers are provided containing cyclic siloxanes which are useful in silicone surfactants for foam polyurethane foam applications. The novel polymers are prepared by reacting a polyhydridosiloxane polymer with a cyclic polysiloxane containing a vinyl group and with an allyl started polyoxyalkylene polymer in the presence of a platinum catalyst. The resulting polymeric products are highly potent and impart flat breathability profiles to foams when used as surfactants in their preparation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.