Branched polylactic acid polymers and method of preparing same

Details Branched polylactic acid polymers and method of preparing same Branched polylactic acid polymers and method of preparing same

C - Chemistry, Metallurgy

08

L

C08L 51/08 (2006.01) B32B 27/08 (2006.01) C08L 67/04 (2006.01)

Patent

CA 2570822

Polylactide polymers are reacted with an epoxy-functional acrylate polymer to introduce long-chain branching into the polymer. The acrylate polymer provides a flexible means for introducing a controllable amount of branching into the polylactide polymer, with little risk of forming gelled or highly crosslinked structures. The branched polylactide polymers have excellent melt rheological properties that make them more easily processable in various melt-processing applications.

Selon l'invention, on fait réagir des polymères de polylactide avec un polymère acrylique époxyfonctionnel afin d'introduire une ramification à longue chaîne dans le polymère. Le polymère acrylique constitue un moyen flexible permettant d'introduire une quantité contrôlable de ramification dans le polymère polylactide avec un faible risque de former des structures gélifiées ou hautement réticulées. Ces polymères polylactide ramifiés présentent d'excellentes propriétés rhéologiques de fusion qui les rendent plus faciles à traité dans diverses applications de traitement par fusion.

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