Methods for making polydiorganosiloxane microemulsions
US4999398A · kind A · utility
34Cited by
4References
1Claims
0Family size
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Key dates
| Filing date | Jul 24, 1989 |
| Grant date | Mar 12, 1991 |
| Priority date | — |
| Expiry date | Jul 24, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2383/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A novel method for making stable aqueous microemulsions of high molecular weight polydiorganosiloxanes which comprises sequentially adding at an effective rate a standard emulsion comprised of polydiorganosiloxane precursor, surfactant, and water to a polymerization catalyst medium while mixing to form a clear, stable aqueous microemulsion of polydiorganosiloxane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.