Polymeric composition suitable for manufacturing heat...

Details Polymeric composition suitable for manufacturing heat... Polymeric composition suitable for manufacturing heat...

2008-09-19

2010-10-26

Szekely, Peter (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S394000, C524S396000, C524S434000, C524S445000, C524S492000, C524S493000

Reexamination Certificate

active

07820756

ABSTRACT:
A polymeric composition suitable for manufacturing heat sealable films or sheets comprising, polyethylene terephthalate (PET) to the extent of about 80% to 95% by mass of the total composition; a polymer additive for lowering the melting point of the composition selected from Polyethylene Naphthalate (PEN), Polytrimethylene Naphthalate (PTN), in-situ formed Polyethylene Naphthalate (PEN) and in situ formed Polytrimethylene Naphthalate (PTN) to the extent of about 20% to 5% by mass of the total composition; a nucleating agent to the extent of about 200 to 1500 ppm by mass of the composition; a polycondensation catalyst to the extent of about 30 to 300 ppm by mass of the composition; a clear fast reheat (CFRH) additive to the extent of about 10 to 30 ppm by mass of the composition; a color toner to the extent of about 0.75 to 25 ppm by mass of the composition; and a heat stabilizer to the extent of about 20 to 55 ppm by mass of the composition.

REFERENCES:
patent: 7199210 (2007-04-01), Kulkarni et al.
patent: 2007/0167547 (2007-07-01), Tammaji et al.
patent: 2009/0035502 (2009-02-01), Tammaji et al.

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