Polypropylene type aqueous dispersion, polypropylene type...

Details Polypropylene type aqueous dispersion, polypropylene type... Polypropylene type aqueous dispersion, polypropylene type...

2008-08-04

2010-02-09

Cheung, William K (Department: 1796)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S347000, C526S317100, C525S403000, C525S453000

Reexamination Certificate

active

07659356

ABSTRACT:
A polypropylene type aqueous dispersion comprising the following components (a) to (c):(a)a polypropylene type polymer100parts by weightand/or a modified polypropylenetype polymer(b)a surfactant1 to 100parts by weight, and(c)water100 to 1,000parts by weight,wherein the component (a) has a main chain having the following features (1) and (2) and dispersion particles in the dispersion have an average particle size of at most 0.5 μm,Feature (1) when observing a peak derived from a carbon atom of a methyl group in a propylene unit chain part comprising a head-to-tail bond by13C-NMR and fixing a chemical shift of a peak top at a peak attributable to pentad expressed by mmmm to 21.8 ppm, a ratio (S1/S) of an area S1of a peak of a peak top at 21.8 ppm to a total area S of peaks at from 19.8 ppm to 22.1 ppm is at least 10% and at most 60%, and when an area of a peak (mmmr) of a peak top at 21.5 to 21.6 ppm is expressed as S2, 4+2S1/S2>5, andFeature (2) a content ratio (mol ratio) of propylene unit (A): other olefin unit (B) is from 100:0 to 90:10.

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