Polymers of a hydrophobic nature, filled with starch complexes

Details Polymers of a hydrophobic nature, filled with starch complexes Polymers of a hydrophobic nature, filled with starch complexes

C - Chemistry, Metallurgy

08

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C08L 51/08 (2006.01) B60C 1/00 (2006.01) C08J 3/24 (2006.01) C08J 5/18 (2006.01) C08L 3/02 (2006.01) C08L 51/06 (2006.01) C08L 21/00 (2006.01) C08L 23/02 (2006.01) C08L 59/00 (2006.01)

Patent

CA 2349915

Hydrophobic polymers incompatible with starch containing, as a filler, a starch complex dispersed in the polymer matrix in the form of particles with numeric mean dimension of less than 3 microns, bound to the polymer matrix by coupling agents containing groups compatible with the matrix and with the complex, in which the starch complex is characterized by second-derivative IR absorption in the region of 940-952 cm-1 are described or wherein the starch complex is bound to the polymeric matrix through reactive groups contained in the complex capable of being fixed to the polymeric matrix. The starch complex in the case of biodegradable polymers such as the aliphatic or aliphatic aromatic polyesters is formed with complexing agents different from the polymer forming the matrix and from EVOH copolymers.

L'invention concerne des polymères hydrophobes incompatibles avec l'amidon, contenant une matière de charge à base de complexe d'amidon. Ce complexe est dispersé dans la matrice polymérique sous la forme de particules ayant une dimension numérique moyenne inférieure à 3 microns. Les particules sont liées à la matrice par des agents de couplage renfermant des groupes compatibles avec la matrice et le complexe. Le complexe est caractérisé par une absorption de l'infrarouge en dérivée seconde comprise entre 940 et 952 cm<-1>. Le complexe est lié à la matrice par des groupes réactifs qui appartiennent à ce complexe et qui sont capables de se fixer sur ladite matrice. Dans le cas de polymères biodégradables du type polyesters aliphatiques ou aliphatiques aromatiques, le complexe est formé par le bais d'agents complexants différents du polymère qui constitue la matrice et des copolymères du type EVOH.

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