Ph-modified polymer compositions with enhanced biodegradability

Details Ph-modified polymer compositions with enhanced biodegradability Ph-modified polymer compositions with enhanced biodegradability

C - Chemistry, Metallurgy

08

L

C08L 101/12 (2006.01) A61L 15/62 (2006.01) C08K 3/00 (2006.01) C08K 5/00 (2006.01)

Patent

CA 2177033

Polymer compositions having enhanced biodegradability are disclosed. The compositions comprise a blend of: (1) a polymer containing hydrolyzable bonds; and (2) a substantially water-insoluble, pH-modifying compound capable of accelerating the hydrolysis of the hydrolyzable bonds in the polymer. The invention also relates to polymer films comprising such compositions and absorbent articles containing such polymer compositions or films. The compositions are particularly suitable for use in disposable absorbent articles such as diapers.

Des compositions polymères présentant une biodégradability améliorée comprennent un alliage constitué (1) d'un polymère renfermant des liaisons hydrolysables; et (2) un composé modifiant le pH, pratiquement insoluble dans l'eau, pouvant accélérer l'hydrolyse des liaisons hydrolysables dans le polymère. L'invention concerne également des films polymères renfermant ces compositions et des articles absorbants renfermant ces compositions ou films. Lesdites compositions se prêtent particulièrement aux applications dans les articles absorbants jetables tels que les couches.

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