Copolymers of ethylene and vinyl acetate of increased insolubility
US4118356A · kind A · utility
10Cited by
10References
8Claims
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Key dates
| Filing date | Dec 18, 1973 |
| Grant date | Oct 3, 1978 |
| Priority date | — |
| Expiry date | Dec 18, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F263/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Ethylene and vinyl acetate are copolymerized in aqueous emulsion using redox catalysts by copolymerizing vinyl acetate and ethylene monomers in an emulsion containing at least 10% by weight of emulsified particles of a copolymer of ethylene and vinyl acetate, with the unreacted vinyl acetate and ethylene providing a concentration of at least 10% by weight of unreacted monomers in the emulsion together with redox catalysts to cause a vigorous exothermic reaction. The copolymer exhibits substantially increased insolubility in organic solvents and aqueous caustic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.