Bulk polymerization process
US7351776B2 · kind B2 · utility
62Cited by
34References
34Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 22, 2005 |
| Grant date | Apr 1, 2008 |
| Priority date | — |
| Expiry date | Feb 22, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S526/902
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for the continuous production of polydienes, the method comprising the steps of (a) charging a mixture of one or more monomer, catalyst system, and less than 50% weight percent organic solvent based on the total weight of the monomer, catalyst and solvent, into first vessel, (b) polymerizing the monomer to a conversion of up to 20% by weight of the monomer to form a mixture of reactive polymer and monomer, (c) removing the mixture of reactive polymer and monomer from the vessel, and (d) terminating the reactive polymer prior to a total monomer conversion of 25% by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.