. "H Cl-l 'CH iIH and HCH -'-CH'CH i O: (|)=O (L O=(L %=0 1 Y i, l Y Unit I Unit I I wherein R, represents an alkyl radical containing 8 to 18 carbon atoms, R is an alkyl radical having from one to three carbon atoms, and X and Y are each individually selected from the group consisting of l an alkoxy One class of alkyl vinyl ether may be represented by the structural formula wherein R represents an" . . . .