Abstract
In the thermal properties of copolymers of vinyl chloride with other vinyl monomers, the effects of both chemical composition and monomers content on second order transition point were investigated. The flexural temperature and the flow properties of these copolymers were studied. These thermal properties were measured at higher chloride content region of copolymers than 40%. Effects of lower alkyl vinyl monomers, such as vinyl acetate, methyl acrylate and dibutyl maleate on these properties were little. Higher alkyl vinyl monomers, such as octyl acrylate, lauryl vinyl ether and vinyl stearate, and ethylenes monomer have so large effects (on the thermal properties) that some of these copolymers have lower second order transition point and flexural temperature than 30°C and superior flow properties.
