Alkyl polymaine microbiocides
AssigneeNalco Chemical Company
InventorJohn D. Newkirk
Life of this patent
Estimating the term…
Abstract
Active microbiocides prepared by reacting a long-chain N alkyl diamine such as cocodiamine in molar amounts with 0.5-3.0 moles of epichlorohydrin under controlled conditions and then terminating the active end groups by reacting with 0.5-3.0 moles of a tri lower alkylamine, such as trimethylamine. The poly quaternary nitrogen compounds produced are effective at 25 ppm levels in recirculating systems against bacteria, such as A. aerogenes. In inhibition tests these compounds have also proved effective against fungi, such as A. niger.
Claims8
A bactericidal or fungicidal composition comprising an aqueous carrier and a bactericidally or fungicidally effective amount of at least 25 ppm of a mixture of 1 mole of N-alkyl triethylene diamine where alkyl is C.sub.6 -C.sub.18 with 0.5-3.0 moles of epihalohydrin and subsequently quaternized with an excess of tri lower alkylamine.
A method of combatting bacteria or fungi in aqueous systems comprising applying to said bacteria or fungi a bactericidally or fungicidally effective amount of at least 25 ppm of a mixture of 1 mole of N-alkyl triethylene diamine where alkyl is C.sub.6 -C.sub.18 with 0.5-3.0 moles of epihalohydrin and subsequently quaternized with an excess of a tri lower alkylamine.
Dependencies are inferred from the claim text.