Rinse soluble polymer film composition for wash additives

Details Rinse soluble polymer film composition for wash additives Rinse soluble polymer film composition for wash additives

1987-03-24

1989-01-31

Pertilla, Theodore E.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

8137, 252 90, 524 99, 524186, 524557, 525 56, 525 61, 527300, C08K 517, C08F 800

Patent

active

048016365

ABSTRACT:
A polymeric film material for the rinse release of wash additives comprises a blend of polyvinyl alcohol and an alkyl cellulose. A metalloid oxide cross-linking agent is present in an amount sufficient to sharply reduce the solubility rate of the film blend in an alkaline wash, yet allow dissolution in a less alkaline rinse. Optionally, a hydrophobic cationic species is included to further reduce the dissolution rate in the wash pH. The films remain intact during normal wash cycles and over a range of typical water temperatures, then rapidly dissolve in the rinse. The film can be used to microencapsulate an additive, or made into a water-soluble pouch, or as a soluble seal for a pouch or container.

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