Foamable polypropylene polymer
US6174930A · kind A · utility
63Cited by
60References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1999 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Nov 4, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2323/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates generally to foamable polypropylene polymer, and more particularly a foamable isotactic polypropylene homopolymer obtained from metallocene catalysis and to their methods of production and articles formed therefrom. The foamable polypropylene polymer has molecular weight distributions and densities that fall within broad ranges. The foamable polypropylene polymer may be prepared in a multiple stage polymerization process using the same metallocene component in at least two stages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.