Process for spray drying of vinyl chloride homopolymers and copolymers
US4948872A · kind A · utility
3Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1987 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Aug 31, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2327/06
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for the preparation of vinyl chloride homopolymer and copolymer pulverulent powders suitable for the preparation of plastisols with improved rheological properties, comprising polymerizing to form a vinyl chloride homopolymer or copolymer latex and drying said latex by atomization, the temperature at which the latex to be subjected to drying by atomization is employed being at least equal to 40.degree. C. and being lower than the degradation temperature of said homopolymer or copolymer, and the resultant vinyl chloride polymer pulverulent powders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.