Process for gas phase polymerization of vinyl chloride
US4740571A · kind A · utility
5Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 1986 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Oct 28, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/185
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the gas phase homopolymerization of vinyl chloride or the gas phase copolymerization of vinyl chloride with a monomer copolymerizable therewith, wherein when the breeding ratio first exceeds 3.5 after initiation of the polymerization, the feed rate of a seed polymer is adjusted so that the breeding ratio is maintained at a level of from 3.5 to 5.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.