| http://www.w3.org/ns/prov#value | - Hydrophilic monomer materials which may be utilized in accord with the present invention are preferably esters of alpha, beta-unsaturated carboxylic acids such as methacrylic acid, acrylic acid, itaconic acid, aconitic acid, cinnamic acid, crotonic acid, mesaconic acid, carboxyethyl acrylic acid, maleic acid, fumaric acid and the like.
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