Process for producing aqueous emulsions of vinyl chloride/vinyl ester/ethylene copolymer
US4299941A · kind A · utility
14Cited by
7References
7Claims
0Family size
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Key dates
| Filing date | Sep 24, 1979 |
| Grant date | Nov 10, 1981 |
| Priority date | — |
| Expiry date | Sep 24, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/922
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An improved process for producing an aqueous emulsion of a vinyl chloride/vinyl ester/ethylene copolymer having a small heat fluidity and excellent strength which comprises continuously adding a solution of a specific polybasic acid polyallyl ester in the vinyl chloride and/or vinyl ester and further at least 60% by weight of the vinyl chloride and vinyl ester to the polymerization system during the polymerization reaction. The copolymer thus produced has a large benzene-insoluble part and the aqueous emulsion thereof is stable and is useful as an adhesive, as for paint compositions, or as a binder for fibers and papers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.