Quaternary ammonium terpolymers

Details Quaternary ammonium terpolymers Quaternary ammonium terpolymers

1979-04-26

1981-12-08

Anderson, Harold D.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

71 67, 71 85, 422 28, 424 78, 526248, 526287, 526291, 526293, 526295, 526296, 526317, 526319, C08F 1414, C08F 1402, C08F22604

Patent

active

043048943

ABSTRACT:
Watersoluble terpolymers based on three monomer units all of formula: ##STR1## (or possibly the 5-membered ring analogue) wherein the N-substituents are respectively (A) low-low e.g. dimethyl (B) low-medium e.g. methyloctyl and (C) low-higher e.g. methyllauryl or methylcetyl, in molecular size; B:C being usually 5:1 to 0.333:1 (perferably 2:1 to 1:1) in weight ratio, and species less than 10,000 or preferably 20,000 m.w. usually being removed, have surprisingly effective sterilizing activity e.g. against Candida while (a) not accumulating in soft contact lenses, whereby they can be used as an overnight nonirritant aqueous sterilant solution at concentrations below 0.1 weight percent e.g. 0.05 or less and (b) not penetrating skin or like membrane whereby aqueous formulations can be used as topical disinfectants without systemic side-effects.

REFERENCES:
patent: 3539684 (1970-11-01), Hoover
Hay-U.S. Pat. No. 3,306,875, cols. 1-2, 35-36.

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