Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1986-05-09
1988-02-02
Jacobs, Lewis T.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
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.
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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
Elkem a/s
Jacobs Lewis T.
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