Polypropylene resin and blow molded container

Details Polypropylene resin and blow molded container Polypropylene resin and blow molded container

2011-07-05

2011-07-05

Szekely, Peter (Department: 1761)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S387000

Reexamination Certificate

active

07973100

ABSTRACT:
Polypropylene resins of the present invention give blow molded containers excellent in transparency, impact resistance and flexibility. Stretch blow molded containers obtained from the polypropylene resins enable volume reduction and weight reduction. A polypropylene resin includes a random polypropylene (P1) having MFR (ASTM D 1238, 230° C., 2.16 kg load) of 0.5 to 100 g/10 min and an ethylene content of 3.0 wt % to less than 7.0 wt %, (i) the resin containing the random polypropylene (P1) at not less than 80 wt %, (ii) the resin showing a broad DSC melting curve which has a single melting point peak and in which the maximum intensity peak temperature (Tm) is not more than 120° C. and the half-value width on a higher temperature side from the maximum intensity peak is not less than 20° C.

REFERENCES:
patent: 2006/0247395 (2006-11-01), Gauthier et al.
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patent: 2002-275331 (2002-09-01), None
patent: 2003-286377 (2003-10-01), None
patent: WO 2006/118932 (2006-11-01), None

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