Process for preventing the degradation of water soluble packagin

Details Process for preventing the degradation of water soluble packagin Process for preventing the degradation of water soluble packagin

1995-11-22

1998-12-22

McCarthy, Neil

Liquid purification or separation

Processes

Chemical treatment

2101981, 210764, 252175, 252180, 252181, 514389, 514390, 514769, 514770, C02F 150, C02F 176

Patent

active

058514066

ABSTRACT:
A method to prevent the degradation of water soluble film placed in contact with halogenated hydantoin or chlorinated cyanuric acid and an apparatus for disinfecting water systems. Halogenated 5,5-dialkyl hydantoin or chlorinated cyanuric acid is combined with a stabilizing agent to prevent the halogenated hydantoin or chlorinated cyanuric acid from discoloring or degrading a polymeric film which it may contact. The oxidizing agent includes alkaline hydroxide, alkaline carbonates, alkaline bicarbonates, alkaline phosphates, alkaline silicates, and alkaline borates. Polymeric films for which this is suitable include 2-hydroxy propyl cellulose and poly(vinyl alcohol).

REFERENCES:
patent: 4119535 (1978-10-01), White et al.
patent: 4372868 (1983-02-01), Saran et al.
patent: 4498921 (1985-02-01), Wojtowicz
patent: 4728453 (1988-03-01), Choy
patent: 5004549 (1991-04-01), Wood et al.
patent: 5205955 (1993-04-01), Bunczk et al.

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