Invention Grant
US07642226B2 Polyvinyl alcohol copolymer film for packaging liquid products and having an improved shelf-life
有权
用于包装液体产品的聚乙烯醇共聚物膜,具有改善的保存期限
- Patent Title: Polyvinyl alcohol copolymer film for packaging liquid products and having an improved shelf-life
- Patent Title (中): 用于包装液体产品的聚乙烯醇共聚物膜,具有改善的保存期限
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Application No.: US11366150Application Date: 2006-03-02
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Publication No.: US07642226B2Publication Date: 2010-01-05
- Inventor: Andrew P. Verrall , P. Scott Bening , Karen A. Kugler
- Applicant: Andrew P. Verrall , P. Scott Bening , Karen A. Kugler
- Applicant Address: US IN Merrillville
- Assignee: Monosol, LLC
- Current Assignee: Monosol, LLC
- Current Assignee Address: US IN Merrillville
- Agency: Marshall, Gerstein & Borun LLP
- Main IPC: C11D17/00
- IPC: C11D17/00

Abstract:
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.
Public/Granted literature
- US20060148668A1 Polyvinyl alcohol copolymer film for packaging liquid products and having an improved shelf-life Public/Granted day:2006-07-06
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