| http://www.w3.org/ns/prov#value | - Highly preferred are polyacrylate esters which have the following general formula: ##STR8## wherein R5 represents a radical selected from the group consisting of hydrogen, lower alkyl of from 1 to about 4 carbon atoms, hydroxy alkyl of from 1 to about 4 carbon atoms, and ##STR9## R4 is a radical selected from the group consisting of hydrogen, halogen, and lower alkyl of from 1 to about 4 carbon at
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