Magnesium dichloride-ethanol adduct and catalyst components...

Details Magnesium dichloride-ethanol adduct and catalyst components... Magnesium dichloride-ethanol adduct and catalyst components...

2006-08-08

2006-08-08

Choi, Ling-Sui (Department: 1713)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S348000, C526S352000, C526S124300, C502S103000, C502S115000, C502S125000

Reexamination Certificate

active

07087688

ABSTRACT:
A MgCl2·mEtOH·nH2O adducts, where 3.4<m≦4.4, 0≦n≦0.7, characterized by an X-ray diffraction spectrum, taken under the condition set forth above, in which, in the range of 2θ diffraction angles between 5° and 10°, at least two diffraction lines are present at diffraction angles 2θ of 9.3±0.2°, and 9.9±0.2°, the most intense diffraction lines being the one at 2θ of 9.3±0.2°, the intensity of the other diffraction line being less than 0.4 times the intensity of the most intense diffraction line. Catalyst components obtained from the adducts of the present invention are capable to give catalysts for the polymerization of olefins characterized by enhanced activity and/or porosity with respect to the catalysts prepared from the adducts of the prior art.

REFERENCES:
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patent: 6071846 (2000-06-01), Kitajima et al.
patent: 6437061 (2002-08-01), Sacchetti et al.
patent: 0395083 (1990-10-01), None
patent: 0700936 (1996-03-01), None
patent: 9844009 (1998-10-01), None
patent: WO 98/44009 (1998-10-01), None

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