prov:value
| - An ink according to claim 1 wherein the borate ester is one of the general formulae wherein R4 and R5 each, independently of the other, is an alkyl group, an aryl group, an arylalkyl group, an alkylaryl group, an alkoxy group, a polyalkyleneoxy group, wherein R4 and R5 can be joined together to form a ring, R6, R7, R8, R9, R10, and R11 each, independently of the other, is a hydrogen atom, an alkyl
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