Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Organic polymerization
Patent
1980-12-11
1982-09-21
Schor, Kenneth M.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Organic polymerization
366 79, 366313, 366318, 422134, 425208, 425209, 425225, B29F 302
Patent
active
043506631
ABSTRACT:
Apparatus for applying a reactant gas to an extrudable polymer, as, for example, a carbonate resin having the phenolic hydrogen end atoms replaced by stress corrodant preventive groups which are halohydrocarbon groups or a silane groups or the hydrogen end atoms replaced by a capping group having fluorescent properties to provide ultraviolet light and stress corrosive protection. The apparatus includes a heatable extruder barrel having a receiving end communicating with said polymer supply containing means and a discharge end for communication with an extrusion die, an extruder screw rotatably mounted in the barrel for moving a supply of non-fused polymer from the receiving end through the barrel for heating to fusion temperature therein and to the discharge end thereof for passage therefrom through the extrusion die, an annular reactant gas inlet communicating with the interior periphery of the barrel at a position between the receiving and discharge ends thereof upstream from the position therein wherein the polymer reaches its fusion temperature, and an annular reactant by-product gas vent communicating with the interior periphery of the barrel at a position downstream of the reactant gas inlet.
REFERENCES:
patent: 692011 (1902-01-01), Hansen
patent: 3257173 (1966-06-01), Parnell
patent: 3279895 (1966-10-01), Howe
patent: 3619145 (1971-11-01), Crawford
patent: 3706719 (1972-12-01), Goffinet
patent: 3944192 (1976-03-01), Farrell
patent: 3954366 (1976-05-01), Fields
patent: 4181647 (1980-01-01), Beach
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