| http://www.w3.org/ns/prov#value | - As the polyamide precursor suitable for the preparation of the block-copolymer, the following are the preferred examples: lactams of 6 to 12 carbons, particularly caprolactam; w-aminocarboxylic acids such as 6-aminocaproic, 9-amino-nonanoic, lO-aminocapric, and 11- amino-undecanoic acids, used either singly or as mixture of no less than two components; and nylon salts of hexamethylenediamine or me
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