High melt-strength polyolefin composites and methods for making and using same
US6770697B2 · kind B2 · utility
25Cited by
23References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2002 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Jul 11, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2310/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention includes a process for preparing an improved melt-strength polyolefin blend by incorporating a polyolefin/clay nanocomposite product. The nanocomposite-modified polyolefin blend is used to form articles through processing operations that involve stretching and/or drawing, such as thermoforming, melt spinning, blow molding and foaming. The addition of the nanocomposite product to the polyolefin blend improves the sag resistance of the polyolefin and broadens the processing window of the operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.