Polymer composition comprising a branched thermoplastic elastomer and a thermoplastic styrene polymer
US11535742B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Jun 19, 2018 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Sep 14, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2425/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polymer composition comprises (a) 50 to 100 phr of one or more branched thermoplastic elastomers each comprising an unsaturated elastomer block and at least three thermoplastic styrene blocks, the thermoplastic styrene blocks of each branched thermoplastic elastomer representing from 15% to 75%, preferably from 15% to 50%, by weight of the weight of each branched thermoplastic elastomer, and (b) 10 to 100 phr of one or more thermoplastic styrene polymers having a molecular mass of between 25,000 and 300,000 g/mol, preferably between 50,000 and 200,000 g/mol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.