| http://www.w3.org/ns/prov#value | - Exemplary crosslinking agents which can be used in the present invention include those which contain at least three isocyanate moieties, for example, isocyanurate, among numerous others, or a mixture of reactive moieties, such as carboxylic acid and hydroxylic groups (an example being citric acid or tartaric acid, among numerous others) and amine groups.
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