Manufacture of elongated extruded cross-linked products
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United States of America Patent
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-
Jun 17, 1986
Grant Date -
N/A
app pub date -
Nov 14, 1983
filing date -
Nov 14, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for the manufacture of a cross-linked extruded elongated product from polyethylene or other suitable polymer. The polymer is fed into the hopper of a screw extrusion machine. The polymer is heated and melted while being conveyed through the barrel of the screw extruder. A liquid silane compound which comprises a modified vinyl functional silane, a free-radical generator, and a condensation catalyst is carefully metered and injected into the melted polymer. The melted polymer and the liquid silane compound are then mixed and blended to obtain a uniform blended mixture thereof. The blended mixture is then extruded through an extrusion die to form an elongated product of a required final shape and the elongated product is then subjected to the action of moisture and heat until the polymer in the elongated product is cross-linked.
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