Resin compositions

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...

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Details

523212, 523213, 524492, 524493, C08K 336

Patent

active

047229527

ABSTRACT:
Silica fume subject to a mechanical reduction in size by a milling process such as a fluid energy mill or jet mill is disclosed. The overall size reduction is at least 10%. The milled silica fume product should have not more than 0.5% by weight unable to pass through a 325 mesh screen. The milled silica fume can be used in thermoplastic resins, cementitious material and refactory material. The use of the milled silica fume with UPVC or PVC to make conduit with improved elastic modulus, improved impact resistance, decreased wall thickness and increased calcium carbonate content is specifically disclosed.

REFERENCES:
patent: 3013897 (1961-12-01), Cupery et al.
patent: 3574135 (1971-04-01), Sampson et al.
patent: 3622650 (1969-02-01), Berstein
patent: 3720532 (1973-03-01), Simpson et al.
patent: 4301060 (1981-11-01), Underwood et al.
patent: 4455331 (1984-06-01), Barsotti
patent: 4515861 (1985-05-01), Arup

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