Granular form of a mixture of a nickel-quencher and a benzophenone and process for its preparation
US6403679B1 · kind B1 · utility
1Cited by
1References
9Claims
0Family size
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Key dates
| Filing date | Aug 23, 2000 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Aug 23, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A40/25
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Granular form of a mixture comprising: (a) a nickel-quencher corresponding to [2,2′-thio-bis(4-t-octyl-phenolate)-n-butylamine Nickel (II)]; (b) a 2-hydroxy-4-alkyloxybenzophenone corresponding to 2-hydroxy-4-n-octyloxybenzophenone; characterized in that it has two diffraction lines at angles 2&thgr;=17.593 and 2&thgr;=22.023 in the X-Ray diffraction spectrum from powders. The above granular form can be used as a light stabilizer for agricultural films based on polyolefins or olefinic copolymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.