Process for producing aqueous dispersion of ethylene-vinyl acetate copolymer containing no formalin
US4094849A · kind A · utility
13Cited by
6References
7Claims
0Family size
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Key dates
| Filing date | Oct 27, 1976 |
| Grant date | Jun 13, 1978 |
| Priority date | — |
| Expiry date | Oct 27, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for producing an aqueous dispersion of ethylene-vinyl acetate copolymer containing no formalin by emulsion-polymerizng ethylene and vinyl acetate and optionally other copolymerizable vinyl monomers in the presence of a redox catalyst consisting of an oxidizing agent and a reducing agent, which is characterized in that a reaction product of a glyoxal compound and an alkali metal, ammonium or zinc salt of a reductive sulfur oxide is used as the reducing agent for the redox catalyst, in which process the polymerization temperature is easily controlled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.