Alkyl aryl ethyleneoxy sulfonate surfactants for vinyl acetate polymerization
US4283321A · kind A · utility
17Cited by
3References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 3, 1979 |
| Grant date | Aug 11, 1981 |
| Priority date | — |
| Expiry date | Oct 3, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K23/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Improved surfactants can be produced from alkyl aryl poly(ethyleneoxy) sulfonates, represented by the formula: ##STR1## wherein: R is an alkyl or dialkyl group having at least 6 carbon atoms; and PA1 n is greater than 9; and PA1 Me is a monovalent cation, preferably Na, NH.sub.4, K or Li. High solids content aqueous vinyl acetate emulsions having long term stability are provided by polymerizing vinyl acetate in the presence of the surfactant and water. The quantity of water is predetermined so as to produce a latex having at least 40% solids.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.