Polyester block compatibilizer for polyethylene polypropylene blends
US10450450B2 · kind B2 · utility
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2References
15Claims
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Assignee
Inventors
Key dates
| Filing date | May 18, 2016 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Jul 20, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a composition comprising polypropylene, polyethylene and a compatibiliser, wherein said compatibiliser is a block copolymer comprising a polypropylene block and a polyester block, said polyester being a non-aromatic polyester and having an average M/E ratio of at least 10, wherein M is the number of backbone carbon atoms in the polyester not including the carbonyl carbons and E is the number of ester groups in the polyester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.