Enhanced lubrication in polyolefin closure with polyolefin grafted cyclodextrin
US7385004B2 · kind B2 · utility
9Cited by
142References
16Claims
0Family size
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Inventor
Key dates
| Filing date | Dec 27, 2004 |
| Grant date | Jun 10, 2008 |
| Priority date | — |
| Expiry date | Dec 18, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2878
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Thermoplastic polymer compositions in a closure can comprise a polymer, a modified vinyl polymer and a slip agent or polymer lubricant said modified polymer having a moiety comprising a cyclodextrin compound. The cyclodextrin compound, locked into the polymer structure, can absorb impurities, permeants, or other undesirable volatile materials. The cooperation between the lubricant, the cyclodextrin grafted onto the thermoplastic polymer and the polymer structure can provide barrier properties to a film, web or other polymer structure and a surface with substantial lubricity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.