volume 33, issue 5, P311-315 1993
DOI: 10.1002/pen.760330511
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Abstract: Abstract The synthesis of unsaturated polyesters (UP) by high‐temperature polycondensation is accompanied by isomerization of the double bond from the cis to the trans configuration. The presence of the trans double bonds facilitates crosslinking and may have an important influence on rheological and mechanical properties of the UP and the cured end product. All‐trans polyesters are not available on the market. A study of “all‐trans” low‐temperature polycondensation based on chemical and enzymatic lipase cata…

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