Polyethylene terephthalate compositions and methods of using...

C - Chemistry – Metallurgy – 08 – L

Patent

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C08L 67/02 (2006.01) B29C 39/14 (2006.01) B29C 49/06 (2006.01) C08G 81/02 (2006.01) C08J 9/00 (2006.01) C08L 35/00 (2006.01)

Patent

CA 2050406

- 9 - ABSTRACT This invention relates to polyethylene terephtalate compositions comprising a reaction product of A PET resin and 0.05 to 5.0 WT % of a copolymer of maleic anhydride, optionally together with pyromellitic dianhydride. These compositions have improved melt strengths, which allow to apply them especially for extrusion blow- moulding and foam extrusion.

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