Polymer film composition for rinse release of wash additives

Details Polymer film composition for rinse release of wash additives Polymer film composition for rinse release of wash additives

1987-03-24

1988-08-23

Albrecht, Dennis

Compositions

Compositions for enhancing the appearance of consumer...

252 88, 252 90, 252 95, 25217413, 252DIG3, 252DIG15, 2065242, 2065243, 2065247, 2065249, 428913, C11D 1706, C11D 1704, D06M 1346, D06M 1354

Patent

active

047659165

ABSTRACT:
A polymeric film for the rinse release of wash additives comprises an outer film layer of a hydroxybutylmethylcellulose (HBMC)/hydroxypropylmethylcellulose (HPMC) blend. An inner film layer is a PVA film having a metalloid oxide cross-linking agent present in an amount sufficient to cause the PVA film to gel in a pH of below about 9.0. Both film layers include a plasticizer and may include a surfactant. The film can be used as a seal for an insoluble container, or made into a water-soluble pouch. Optionally, either a third film layer of the HBMC/HPMC blend, or a nonwoven fabric layer may be included for greater durability. The films remain intact during normal wash cycles and over a range of typical water temperatures, then rapidly dissolve in the rinse.

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