| http://www.w3.org/ns/prov#value | - 10. a product according to claim 1 where the polyoxyalkylene polyamine (C) is a diamine of structure: ##STR5## where X is hydrogen or C1-6 alkyl and n is an integer in the range 1-50; or a triamine of structure: ##STR6## where X is hydrogen or C1-6 alkyl and a+b=c=3-30.
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