about 300; is 0 or 1; R1 is an alkylene group having from about 1 to 10 carbon atoms, arylene or alkyl substituted arylene group having 6 to 20 carbon atoms, oligomeric siloxane group having from 1 to 10 Si atoms, alkylene amide or imide, arylene amide or imide, alkylarylene amide or imide, alkylene or arylene sulfonyl amine, alkylene or arylene ester, alkylene or arylene carbonate with the alkyle