Functionalized low molecular weight sterically encumbered oligomers
US11926696B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Feb 2, 2021 |
| Grant date | Mar 12, 2024 |
| Priority date | — |
| Expiry date | Sep 18, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2380/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Low molecular weight, high Tg resins, with applications including tire additives and adhesives. An oligomer is obtained by ring opening metathesis polymerization (ROMP) of a sterically encumbered cyclic monomer with an olefinic chain transfer agent. The sterically encumbered cyclic monomer and the olefinic chain transfer agent are present in the polymerization at a molar ratio of from 2:1 to about 40:1. Also, methods for making the oligomer by ROMP.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.