Quaternary ammonium group-containing polymers having antimicrobi

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...


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5253333, 525379, 525380, 525381, 5253267, 5253271, 5253282, 5253294, 521 27, 424 78, 424329, 526293, C08F11402, A01N 3312, C08F21402




Polymeric quaternary ammonium compounds having recurring vinylbenzyl ammonium units are disclosed. The quaternary ammonium units preferably have 2 alkyl substituents of 1 to 4 carbons and 1 alkyl substituent of 4 to 12 carbons. These materials have antimicrobial properties and are particularly useful for preserving ophthalmic solutions.

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