Vertical autoclave for bulk polymerization of vinyl chloride based polymers and copolymers
US4198376A · kind A · utility
9Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1977 |
| Grant date | Apr 15, 1980 |
| Priority date | — |
| Expiry date | Aug 10, 1997 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2219/1943
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A vertical autoclave suitable for the bulk polymerization of vinyl chloride based polymers and copolymers embodying agitation means comprising at least one agitator (A) in the form of helicoidal ribbon about a rotatable shaft in the upper portion of the autoclave and an agitator (B) having a rotatable shaft passing through the bottom portion of the autoclave with at least one arm located adjacent to and having a profile corresponding to the bottom of the autoclave, and means for independently driving the agitators (A) and/or (B).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.