Preparation of chloroformates having terminal acrylic or methacrylic groups
US4137253A · kind A · utility
2Cited by
2References
7Claims
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Key dates
| Filing date | Nov 28, 1977 |
| Grant date | Jan 30, 1979 |
| Priority date | — |
| Expiry date | Nov 28, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C68/02
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for the preparation of chloroformates having terminal acrylic or methacrylic groups, comprises reacting at least one hydroxyalkyl acrylate or methacrylate with phosgene by introducing a solution of the acrylate or methacrylate into a solution of phosgene, while stirring, at a temperature of -25.degree. C to +5.degree. C, in the presence of an acid acceptor and a stoichiometric excess of phosgene. The products thus obtained are monomers suitable for the production of acrylic polymers carrying reactive groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.