Continuous process for the treatment of polymer composition to remove unreacted monomer and solvent
US4699976A · kind A · utility
11Cited by
2References
5Claims
0Family size
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Key dates
| Filing date | Mar 25, 1986 |
| Grant date | Oct 13, 1987 |
| Priority date | — |
| Expiry date | Mar 25, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F6/28
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is a continuous treating process of a rubber modified styrenic polymer composition produced by bulk or solution polymerization and containing at least 1% by weight of a rubber component and at least 16% by weight of the total amount of an unreacted monomer and solvent which process comprises treating the polymer composition in two-step volatile component separation apparatuses, each of which comprises a multi-tube preheater and a volatilizer, to remove the unreacted monomer and other volatile components wherein the first treated composition contains 3-15% by weight of the unreacted monomer and solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.