Soluble laminates
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Aug 15, 1995
Grant Date -
N/A
app pub date -
Jun 30, 1993
filing date -
Jun 30, 1993
priority date (Note) -
Expired
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Abstract
A water soluble laminate may be prepared comprising one or more relatively water insoluble layers of polymers such as polyvinyl alcohol or crosslinked polyvinyl alcohol and one or more relatively more water soluble layers such as linear uncrosslinked sulphonated vinylaromatic polymers.
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