Isobutylene-based polymers with olefinic side chain substituents and curable compositions containing the same
US12043729B2 · kind B2 · utility
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Key dates
| Filing date | Mar 29, 2019 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | Oct 30, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2312/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided herein are isobutylene-based polymer compositions comprising functionalized isobutylene-based polymer with olefinic side chain substituents, and a sulfur donor and/or accelerator cure system. The functionalized polymer is produced via nucleophilic substitution reaction in solution. The present functionalized isobutylene-based polymer compositions together with various accelerators and sulfur donors can form thermosets useful for pharmaceutical and tire applications without the use of zinc or a zinc oxide activator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.