Method of controlling the relative activity of the different...

Details Method of controlling the relative activity of the different... Method of controlling the relative activity of the different...

2011-08-23

2011-08-23

Lee, Rip A. (Department: 1762)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S113000, C526S114000, C526S115000, C526S116000, C526S091000, C526S161000, C526S160000, C526S172000, C526S170000, C526S943000, C526S169100

Reexamination Certificate

active

08003740

ABSTRACT:
Method of preparing olefin polymers, which comprises the polymerization of at least one α-olefin in the presence of a hybrid catalyst to produce a polymer comprising at least a higher molecular weight polymer component and a lower molecular weight polymer component in the presence of water in an amount of from 2 to 100 mol ppm and/or carbon dioxide in an amount of from 2 to 100 mol ppm, in each case based on the total reaction mixture, in order to alter the ratio of the higher molecular weight polymer component to the lower molecular weight polymer component. This enables the ratio of the higher molecular weight component to the lower molecular weight component to be controlled selectively.

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