Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...
Patent
1991-04-02
1993-04-06
McCamish, Marion E.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Compositions to be polymerized by wave energy wherein said...
522161, 526351, C08F 248, C08F11006, C08J 328
Patent
active
052004392
ABSTRACT:
A method for increasing the intrinsic viscosity of polypropylene having a substantially syndiotactic structure is disclosed which comprises the step of irradiating the syndiotactic polypropylene with radiation in the absence of oxygen. After the irradiation, the polypropylene is preferably heated. Furthermore, the polypropylene having the substantially syndiotactic structure which remains in a melting state can be irradiated with radiation. The polypropylene having the substantially syndiotactic structure is preferably polypropylene in which any diffraction line is not substantially observed in a spacing of about 7.1 .ANG. by X-ray diffraction.
REFERENCES:
patent: 3258455 (1966-06-01), Natta et al.
patent: 3305538 (1967-02-01), Natta et al.
patent: 4335225 (1982-06-01), Collette et al.
patent: 4892851 (1990-01-01), Ewen et al.
patent: 4916198 (1990-04-01), Scheve et al.
patent: 5047446 (1991-09-01), DeNicola et al.
Journal of Applied Polymer Sicentce, vol. 11, pp. 705-718 (1967).
Berman Susan
McCamish Marion E.
Mitsui Toatsu Chemicals Inc.
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