Syndiotactic polypropylene resin composition

Details Syndiotactic polypropylene resin composition Syndiotactic polypropylene resin composition

1992-06-17

1994-01-11

Michl, Paul R.

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...

524186, 524337, 524386, 524396, 524414, 524447, 524449, 524451, 528480, C08K 509, C08K 332, C08K 334, C08K 516

Patent

active

052782166

ABSTRACT:
A syndiotactic polypropylene resin composition comprising a polypropylene having a substantially syndiotactic structure and a nucleating agent. The syndiotactic polypropylene may be a homopolymer of the propylene, a copolymer of the propylene and a smaller amount of another olefin or a mixture of the above-mentioned (co)polymer and an isotactic polypropylene. The resin composition preferably has a higher crystallization temperature than a polypropylene containing no nucleating agent by 5.degree. C. or more, as measurement is made by a differential scanning thermal analysis.

REFERENCES:
patent: 3258455 (1960-06-01), Natta et al.
patent: 4407998 (1983-10-01), Duvdevani
patent: 4892851 (1990-01-01), Ewen et al.
H. N. Beck, "Heterogeneous Nucleating Agents for Polypropylene Crystallization", vol. II, J. of App. Poly. Sci. pp. 673-685 (1967).

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