Process for the production of a microspheroidal powder of low di

Details Process for the production of a microspheroidal powder of low di Process for the production of a microspheroidal powder of low di

1995-06-07

1998-03-10

Weber, Thomas R.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526908, C08F 424

Patent

active

057262608

ABSTRACT:
Process for the production of a microspheroidal powder of low dispersity, according to which a hydrogel is prepared, an aqueous suspension of the ground hydrogel is subjected to atomisation in a stream of gas, gelled particles containing moisture are collected from the atomisation, the particles are brought into contact with an organic liquid in order to remove at least some of the moisture and the particles are then subjected to drying. The process applies to the production of silica powders intended to serve as support for chromium oxide catalysts which may contain titanium oxide and are suitable for the polymerisation of ethylene.

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Herdan, G., "An Account of Statistical Methods for the Investigation of Finely Divided Materials," Small Particle Statistics, Elsevier Publishing Company, New York, pp. 10 to 17 (1953).

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