Saturated polyester for plastic containers with excellent...

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof

Reexamination Certificate

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C524S493000, C977S726000

Reexamination Certificate

active

10286377

ABSTRACT:
A method of manufacturing a plastic container includes adding nano-sized silica particles to a saturated polyester in an amount of 20 ppm to 10% by weight during transesterification or esterification and polycondensing an aromatic dicarboxylic acid and ethylene glycol as starting materials. The silica particles have an average particle diameter of 3–100 nm. The saturated polyester is polyethyleneterephthalate.

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patent: 2003/0165700 (2003-09-01), Kosuge et al.
patent: 03199239 (1991-08-01), None
patent: 2824448 (1998-11-01), None

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