Abstract
AbstractConfigurationally pure, high‐molecular‐weight poly(butylene maleate)s, poly(butylene fumarate)s, poly(octamethylene maleate)s, and poly(octamethylene fumarate)s were synthesized by reaction of the corresponding potassium dicarboxylates and dibromoalkanes in 1‐methyl‐2‐pyrrolidone at 95 to 114°C. The polyfumarates show about ten times higher dynamic viscosities at 150°C than the polymaleates of the same limiting viscosity numbers, which might be attributed to the more extended conformations of the former.
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