发明名称 |
POLYVINYL ALCOHOL COPOLYMER FILM FOR PACKAGING LIQUID PRODUCTS AND HAVING AN IMPROVED SHELF-LIFE |
摘要 |
Generally speaking, the present invention is a water-soluble copolymer film comprising a hydrolyzed copolymer of vinyl acetate and a second monomer, the resultant polyvinyl alcohol copolymer having a degree of hydrolysis, expressed as a percentage of vinyl acetate units converted to vinyl alcohol units, of from about 90% to 100%. The second monomer is preferably selected from the group of monomers having carboxylate functionality or sulfonate functionality. The resulting water-soluble copolymer film is disclosed for use in making pouches to contain a unit dose of liquid detergent, such as a liquid laundry detergent. However, it is an aspect of the copolymer film that film solubility is not significantly affected adversely by the detergent. Such film produces pouches having a greater storage shelf-life over prior art water-soluble film. |
申请公布号 |
EP1604004(A1) |
申请公布日期 |
2005.12.14 |
申请号 |
EP20040757792 |
申请日期 |
2004.03.18 |
申请人 |
MONOSOL, LLC |
发明人 |
VERRALL, ANDREW, P.;BENING, SCOTT, P.;KUGLER, KAREN, A. |
分类号 |
B65D65/46;C08F8/12;C11D17/04 |
主分类号 |
B65D65/46 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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