Polypropylene for the production of thermoformed articles, large, deep, complex and/or thick articles, process for thermoforming modified polypropylene into large, deep, complex and/or thick articles and use of the polypropylene
US9663648B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2011 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Nov 10, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2207/07
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is directed to a modified polypropylene comprising from 0.3 to 2 long-chain branches per 1,000 carbon atoms, wherein said long-chain branch has more than 1,000 carbon atoms and 0 to 6% of ethene and/or alpha-olefinic comonomer having 3 to 18 carbon atoms. The polypropylene of the present invention is a homopolymer, a random copolymer, or a heterophasic copolymer. The present invention also relates to large, deep, complex and/or thick articles which are thermoformed from said polypropylene. Furthermore, the present invention relates to the process for thermoforming said modified polypropylene into large, deep, complex and/or thick articles. The present invention also relates to the use of the polypropylene to prepare large, deep, complex and/or thick articles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.