Method of preparing homo and co-polymers of vinyl chloride adapted to give plastisols from a latex containing two populations of particles
US4340722A · kind A · utility
3Cited by
6References
5Claims
0Family size
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Key dates
| Filing date | Oct 23, 1980 |
| Grant date | Jul 20, 1982 |
| Priority date | — |
| Expiry date | Oct 23, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/909
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method of preparing homo and co-polymers of vinyl chloride in the form of a powder adapted to give plastisols, in which a latex of homo or co-polymers of vinyl chloride, containing from 30 to 60% by weight of dry material and comprising two populations of particles with specific granulometric properties, is concentrated by eliminating a fraction of the aqueous phase in the liquid state, then the residual water is dried off. The dry material content of the concentrated latex is from 50 to 80% by weight, and the absolute difference between the dry material content of the latex before and after concentration is over 10% by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.