Water-soluble film and package using the same

Details Water-soluble film and package using the same Water-soluble film and package using the same

2005-10-18

2005-10-18

Lipman, Bernard (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S048000, C524S050000, C524S056000, C524S058000, C524S291000, C525S059000, C525S060000, C525S061000

Reexamination Certificate

active

06956070

ABSTRACT:
The present invention provides a water-soluble film which comprises a modified polyvinyl alcohol containing an N-vinylamide monomer unit in an amount of 1 to 10 mole percent, and a carboxyl group and a lactone group in a total amount of 0.020 to 4.0 mole percent in the molecule, and having a degree of polymerization of 300 to 3000, and a degree of hydrolysis of 75 to 99.5 mole percent. Further, the present invention provides a package obtained by packaging an acidic substance, a chlorine-containing compound, or the like using the water-soluble film.

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Patent Abstracts of Japan, JP 06-184251, Jul. 5, 1994.

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