High melt strength polypropylene and methods of making same
US9890226B2 · kind B2 · utility
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2References
35Claims
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Key dates
| Filing date | Jul 6, 2015 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Apr 4, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/26
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A high melt strength polypropylene is formed using maleated polypropylene and a combination of coupling agents and acid neutralizers. The maleated polypropylene can be formed using multi-functional monomers. The high melt strength polypropylene can be useful for foaming, sheet extrusion thermoforming, extrusion blow molding, extrusion coating, fiber, film, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.