Catalyst compositions and catalytic processes

Details Catalyst compositions and catalytic processes Catalyst compositions and catalytic processes

1997-09-11

1998-12-22

Wu, David W.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526105, 526106, 526129, 526130, 5263484, 5263485, 502120, 502237, C08F 424

Patent

active

058521445

ABSTRACT:
Catalyst compositions are provided that comprise (a) discrete silica particles; (b) chromium; and (c) a support comprising silica. These composition are useful in polymerizing ethylene or copolymerizing ethylene with a comonomer and provide better control over the molecular weight and the molecular weight distribution of a resulting polymer.

REFERENCES:
patent: 3135809 (1964-06-01), Bosmajian
patent: 4206297 (1980-06-01), Hoff et al.
patent: 4301034 (1981-11-01), McDaniel
patent: 4454293 (1984-06-01), McDaniel
patent: 4547557 (1985-10-01), McDaniel
patent: 4560733 (1985-12-01), Sturdy et al.
patent: 4981927 (1991-01-01), Rekers et al.
"Controlled Growth of Monodisperse Silica Spheres in the Micron Size Range", Journal of Colloid and Interface Science 26, pp. 62-69 (1968).
"Surface Modification of Colloidal Silica", Langmuit, vol. 6, No. 4, pp. 798-801 (1990).
Journal of Non-Crystalline Solids 63 (1984) pp. 45-59 North Holland, Amsterdam, C.J. Brinkler, K.D. Keefer, D.W. Schaefer, R.A. Assink, B.D. Kay and C.S. Ashley, "Sol-Gel Transition in Simple Silicates".

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