Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Thomas P. Yang0
Date of Patent
May 11, 2010
0Patent Application Number
119573680
Date Filed
December 14, 2007
0Patent Primary Examiner
Patent abstract
Water-soluble films are prepared from polymer blends of polyvinyl alcohol and sulfonate polymers. The sulfo group can be acid form, SO3H, as well as salt form of potassium, sodium, ammonium, i.e. —SO3K, —SO3Na, and —SO3NH4. Conventional film-forming processes can be used to produce the films. Polymeric films prepared from the blend compositions have unique characteristics. Their water solubility rate can be controlled by varying the composition ratio of the polymer blend. Their water solubility rate is increased even at a temperature of 0° C. The water-soluble polymeric films can be used as packaging materials and immersion transfer printing film.
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