Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1995-01-17
1995-10-31
Hollinden, Gary E.
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
564296, C07C20902
Patent
active
054631270
ABSTRACT:
The present invention is a process for producing halohydroxypropyltrialkylammonium halides by reacting, in a reaction mixture, a trialkylamine hydrohalide and the corresponding free amine with an epihalohydrin, wherein the free trialkylamine is present in an amount corresponding to from about 1 to about 10 mole percent of the combination of free amine and amine hydrohalide and wherein the epihalohydrin is admixed and allowed to react for a first period of time with the free amine and hydrohalide salt at a first temperature less than a second temperature at which the epihalohydrin is allowed to further react with the amine and hydrohalide salt for a second period of time wherein the second temperature is sufficiently greater than the first that less unreacted amine is present after reaction than is present if the same reactants are admixed and reacted at the first temperature for a time equal to the sum of the first and second periods of time. The epichlorohydrin is preferably admixed and allowed to react with the free amine and amine hydrohalide at a first temperature of from about 0.degree. C. to about 15.degree. C. for the first period of time and the admixture is allowed to react further at a second temperature less than 50.degree. C. but at least 15.degree. C. for the second period of time. More preferably, the first period includes an addition period and a digest period.
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Deavenport Joseph L.
Lopez Bladimir I.
Burn Brian M.
Hollinden Gary E.
The Dow Chemical Company
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