| http://www.w3.org/ns/prov#value | - carbon atoms and, preferably, alkoxyalkyl groups having the formula R.sub.1 --O--R.sub.2 -- wherein R.sub.1 is an alkyl group having from 1 to about 8, preferably 1 to 3 carbon atoms and R.sub.2 is an alkylene group having from 3 to about 6, preferably 3
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