Reducing PVC polymer buildup in polymerization reactors with dithioxamides and alumina
US4068052A · kind A · utility
7Cited by
0References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 23, 1976 |
| Grant date | Jan 10, 1978 |
| Priority date | — |
| Expiry date | Jun 23, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2/004
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for preventing polymer buildup in the polymerization reactor during the suspension polymerization of vinyl chloride monomer to form polyvinyl chloride polymer and copolymers, the method comprising coating reactor surfaces in contact with the reaction medium with a material selected from the group consisting of alumina, dithiooxamide, and mixtures of these prior to carrying out this polymerization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.