Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1982-12-15
1985-06-11
Smith, Edward J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526119, 526142, 525240, C08F 1006
Patent
active
045229945
ABSTRACT:
A polypropylene resin from which high-rigidity molded products can be produced even when no particular additive is added, is provided, which resin has a melt rate of 0.1 to 100, a density of 0.905 to 0.936, and a boiling n-heptane-insoluble part whose isotactic pentad ratio (P.sub.o) is 0.975 to 0.995, and whose pentad ratio (P.sub.2) having two different kinds of configurations of 0.002 to 0.000%, and preferably has a melting point of 165.degree. to 170.degree. C. as measured by differential scanning calorimetry.
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Chiba Hiromasa
Harada Takakiyo
Kumahara Katsumi
Oka Takahiro
Sato Akihiro
Chisso Corporation
Philpitt Fred
Smith Edward J.
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