Thermoweldable fibers obtained from polyolefin composition
US6475617B1 · kind B1 · utility
2Cited by
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12Claims
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Key dates
| Filing date | Jun 1, 1995 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Jun 1, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2969
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Crystalline olefin polymers in the form of granules or nonextruded particles having regular geometric form, containing one of more of the following stabilizers:a) from 0.01 to 0.5% by weight of one or more organic phosphites or phosphonites or mixtures thereof; orb) from 0.005 to 0.5% by weight of one or more HALS (Hindered Amine Light Stabilizer), orc) mixtures of (a) and (b), and optionally one or more phenolic antioxidants at a concentration not higher than 0.2% by weight.The fibers obtained from said polyolefins have high thermoweldability and good resistance to yellowing and aging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.