Degradable polydioxaneone-based materials

C - Chemistry – Metallurgy – 08 – G

Patent

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C08G 63/08 (2006.01) C07D 319/12 (2006.01) C08G 63/664 (2006.01) C08G 69/44 (2006.01) C08J 5/18 (2006.01) C08L 67/04 (2006.01) C09D 167/04 (2006.01)

Patent

CA 2173114

Disclosed are degradable materials including molded products, laminates, foams, pellets, nonwoven materials, adhesives, coatings and films, and particularly packaging films. The materials are made using polydioxaneone polymers comprising at least two different dioxaneone-based repeating units. Preferred polymers are polydioxanediones. First repeating units have less carbon atoms in constituent groups extending from the polymer backbone than second repeating units. Physical characteristics and degradation of the materials can be varied by varying the choice and/or relative proportions of first and second repeating units in the polydioxaneone polymers.

L'invention se rapporte à des matériaux dégradables comprenant des produits façonnés, des stratifiés, des mousses, des pastilles, des matériaux non tissés, des adhésifs, des revêtements et des films, et notamment des films d'emballage. Les matériaux sont fabriqués au moyen de polymères polydioxaneone comprenant au moins deux unités de répétition différentes à base de dioxaneone. Les polymères préférés sont des polydioxane-diones. Les premières unités de répétition ont moin d'atomes de carbone dans les groupes constituants s'étendant à partir du squelette polymère que les secondes unités de répétition. Les caractéristiques physiques et la dégradation des matériaux peuvent varier selon les unités de répétition choisies ou les proportions relatives de ces unités de répétition, qu'on incorpore dans les polymères polydioxaneone.

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