Polyvinyl Plastics : The vinyl group is CH2:CH-: polyvinyl plastics are made by polymerizing vinyl chloride (CH2:CH. CI) or vinyl acetate (CH3. COOCH:CH2) or vinyl acetal (= vinyl acetate and an aldehyde)
H. J. Porter (Chairman - Technical Committee), Dictionary of Fire Technology, The Institution of Fire Engineers, The Victory Press (Leicester) Ltd. 1979 UK. (Fr Tech - Brit) {81}