Process for treatment of water and of surfaces in contact with the said water in order to prevent the attachment of and/or to remove and/or to control macroorganisms, composition and paint for the said treatment

DETAILED DESCRIPTION I claim: 1.
A process for preventing attachment, for removing and for controlling the growth of macroorganisms in water and on surfaces in contact with said water comprising adding at least one biocidal or biostatic active agent to said water or said surfaces expected to contain said macroorganisms wherein said biocidal or biostatic active agent is a mixture of at least one polyamine of formula (I): R.
sub.
1 --NH?(CH.
sub.
2).
sub.
3 --NH!.
sub.
n --(CH.
sub.
2).
sub.
3 NH.
sub.
2(I) wherein R.
sub.
1 is a dodecyl radical or R.
sub.
1 is a tetradecyl radical, and at least one polyamine of formula (I) wherein R.
sub.
1 is an octadecyl radical, n being an integer from 0 to 3.
2.
The process of formula 43 wherein said agent additionally comprises a monoamine of formula (II): R.
sub.
2 NH.
sub.
2 (II) wherein R.
sub.
2 is a C.
sub.
8 -C.
sub.
22 alkyl or alkenyl radical.
3.
The process according to claim 1 wherein addition of said biocidal or biostatic active agent is by continuous injection.
4.
The process according to claim 3 wherein addition of said biocidal or biostatic active agent is by intermittent injection.
5.
The process according to claim 3 wherein said active agent comprises an aqueous phase of an emulsion.
6.
The process according to claim 4 wherein said active agent comprises an aqueous phase of an emulsion.
7.
The process according to claim 3 wherein said emulsion further comprises an emulsifier comprising at least one polyoxyethylenated tertiary amine of formula (III): ##STR2## in which formula R.
sub.
3 is a C.
sub.
8 -C.
sub.
22 alkyl or alkenyl radical and x and y are integers such that (x+y) is from 5 to 50.
8.
The process according to claim 6 wherein said emulsion further comprises an emulsifier comprising at least one polyoxyethylenated tertiary amine of formula (III): ##STR3## in which formula R.
sub.
3 is a C.
sub.
8 -C.
sub.
22 alkyl or alkenyl radical and x and y are integers such that (x+y) is from 5 to 50.
9.
The process according to claim 2 wherein said active agent is applied to said surfaces in contact with said water