| abstract |
1486396 Polyamines BUCKMAN LABORATORIES Inc 19 March 1976 [21 July 1975] 11308/76 Heading C3R The invention comprises quaternary ammonium polyamines of formula where n is from 4 to 40, which may be added to water or aqueous solutions to inhibit the growth of algae. The polymers are prepared by reacting epichlorhydrin with N,N,N<SP>1</SP>,N<SP>1</SP>-tetramethyl ethylene diamine in an aqueous medium in the presence of hydrochloric acid. Examples are given. |