Polar additive for the synthesis of copolymers of vinylaromatic monomer and conjugated diene monomer having high vinylaromatic and low vinyl contents
US11525049B2 · kind B2 · utility
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22Claims
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Key dates
| Filing date | Mar 28, 2018 |
| Grant date | Dec 13, 2022 |
| Priority date | — |
| Expiry date | Dec 26, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2800/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to the use of N,N′,N″-substituted hexahydro-1,3,5-triazine in the anionic polymerization of conjugated diene monomer and vinylaromatic monomer. Use of this polar additive produces copolymers having both high vinylaromatic and low vinyl contents, while the blockiness of the vinylaromatic unit can be tailored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.