| http://www.w3.org/ns/prov#value | - A useful class of such polyamines includes those of the formula: ##STR11## wherein n is an integer in the range of from 1 to about 20 or more, preferably in the range of from 1 to about 3, and R is preferably ethylene, but may be propylene, butylene, etc. (straight chained or branched).
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