Infrared absorbing polyester packaging polymer

Details Infrared absorbing polyester packaging polymer Infrared absorbing polyester packaging polymer

C - Chemistry, Metallurgy

08

L

C08L 67/00 (2006.01) B29D 22/00 (2006.01) B65D 1/02 (2006.01) B65D 65/38 (2006.01) C08K 3/04 (2006.01)

Patent

CA 2235486

The present invention relates to a polyester polymer composition containing graphite in the range of about 3-60 parts per million based on the polyester. The size of the graphite particles is greater than about 0.5µm. As an upper limit, however, any particle size which is not visible to the naked eye is acceptable. Such polyester polymers having graphite incorporated therein absorb infrared radiation better than polymers containing no graphite and thus in the production of plastic bottles less energy is required to heat the preform so that it can be blow molded into a bottle.

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