Radiation curable aqueous compositions for low extractable film packaging
US6803112B1 · kind B1 · utility
10Cited by
21References
26Claims
0Family size
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Key dates
| Filing date | Mar 29, 2000 |
| Grant date | Oct 12, 2004 |
| Priority date | — |
| Expiry date | Mar 29, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for producing a low-extractable film packaging from an actinic radiation curable aqueous composition containing a water soluble compound having at least one &agr;, &bgr;-ethylenically unsaturated, radiation polymerizable group and water as essential components carried out by applying the aqueous composition to a surface which is then irradiated in a single step with actinic radiation in the presence of the water thereby forming a cured film wherein less than 50 ppb of the water soluble compound or its residual components are extractable by a food simulant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.