Process for preparing a polyvinylchloride composition by polymerization in the presence of molding additives
US4090994A · kind A · utility
5Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 8, 1976 |
| Grant date | May 23, 1978 |
| Priority date | — |
| Expiry date | Jan 8, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F14/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for preparing a polyvinylchloride composition by polymerizing vinyl chloride or vinyl chloride and a comonomer comprises polymerizing vinyl chloride or a mixture of vinyl chloride and a comonomer in the gaseous phase under a polymerization pressure which is less than the saturated vapor pressure of vinyl chloride at the polymerization temperature, in the presence of additives required for later formation of a molded product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.