Sodium benzoate as a nucleating agent for monoaxially oriented p

Details Sodium benzoate as a nucleating agent for monoaxially oriented p Sodium benzoate as a nucleating agent for monoaxially oriented p

1993-02-10

1999-06-15

Henderson, Christopher

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...

524583, C08K 509, C08F11006

Patent

active

059122927

ABSTRACT:
A mono-axially oriented polypropylene film with sodium benzoate as a nucleating agent results in reduced shrinkage and increase stretchability. The sodium benzoate ranges up to 1000 ppm. The polypropylene used in making the film preferably has an isotacticity exceeding 97% as determined by C.sup.13 -NMR spectroscopy. The film preferably has a thicknesses of about 0.5 mil to 5.0 mil and, more preferably, about 1.0 mil to 3.0 mil. The sodium benzoate preferably has a purity of 99% and a particle size of from about 1 micron to about 3 microns.

REFERENCES:
patent: 3540979 (1970-11-01), Hughes

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