Improved dispersions of high carboxyl polyamides into...

Details Improved dispersions of high carboxyl polyamides into... Improved dispersions of high carboxyl polyamides into...

C - Chemistry, Metallurgy

08

L

C08L 67/02 (2006.01) B29B 9/06 (2006.01) C08K 5/42 (2006.01) C08L 77/06 (2006.01)

Patent

CA 2626862

A polymer composition, stretched and unstretched articles and processes to make stretched and unstretched articles from that composition are set forth wherein the composition comprises a blend of a polyamide wherein the amino to carboxyl end group ratio of the polyamide polymer is less than 1.0 when the relative viscosity of the polyamide polymer is less than 2.0, and less than 0.30 when the relative viscosity is in the range of 2.0 to 2.3 and less than 0.20 when the relative viscosity is greater than 2.3, a crystallizable polyester and an interfacial tension reducing agent.

L'invention concerne une composition polymère, des articles étirés et non étirés, ainsi que des procédés pour fabriquer des articles étirés et non étirés à partir de la composition susmentionnée. La composition de l'invention comprend un mélange de polyamide dans lequel le rapport de groupe d'extrémité amine/carboxyle du polymère polyamide est inférieur à 1,0 lorsque la viscosité relative du polymère polyamide est inférieure à 2,0; et inférieur à 0,30 lorsque la viscosité relative se trouve dans la plage comprise entre 2,0 et 2,3; et inférieur à 0,20 lorsque la viscosité relative est supérieure à 2,3. L'invention concerne également un polyester cristallisable et un agent de réduction de tension interfaciale.

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