Biodegradable polyester and natural polymer laminates

Details Biodegradable polyester and natural polymer laminates Biodegradable polyester and natural polymer laminates

C - Chemistry, Metallurgy

08

J

C08J 7/04 (2006.01) B65D 65/46 (2006.01) C09D 167/00 (2006.01)

Patent

CA 2230728

Articles are provided in which a self-supporting structure formed of natural polymer has a self-adherent, moisture resistant hydroxy-functional polyester on the structure surface. The self-supporting structure preferably is a starch and polyvinyl alcohol blend in an expanded form. The articles typically do not delaminate even when soaked in water, and are biodegradable.

Articles dans lesquels une structure autoportante formée d'un polymère naturel possède sur sa surface un polyester hydroxy-fonctionnel autoadhésif et résistant à l'humidité. Ladite structure est de préférence un mélange d'amidon et d'alcool polyvinylique dans une forme expansée. Lesdits articles ne se séparent pas en couches individuelles, même lorsqu'ils sont trempés dans l'eau, et ils sont biodégradables.

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