Chemical apparatus and process disinfecting – deodorizing – preser – Control element responsive to a sensed operating condition – Control element responds proportionally to a variable signal...
Patent
1983-09-23
1985-11-26
Richman, Barry S.
Chemical apparatus and process disinfecting, deodorizing, preser
Control element responsive to a sensed operating condition
Control element responds proportionally to a variable signal...
165 96, 422110, 422135, 422138, 422234, 526 68, 526342, C08F22044, G05D 2300
Patent
active
045553840
ABSTRACT:
A process and apparatus for the continuous mass polymerization of styrenic and alkenylnitrile monomers. The process comprises the steps of continuously introducing a feed comprising a predetermined ratio of styrenic and alkenylnitrile monomers into a reaction vessel to produce a reaction mixture; subjecting the reaction mixture to conditions of temperature and pressure under which said monomers copolymerize to produce a styrenic/alkenylnitrile copolymer; subjecting the reaction mixture to horizontal agitation by rotationally agitating the reaction mixture within the reaction vessel by means of at least one stirring device; subjecting the reaction mixture to vertical agitation by withdrawing a portion of the reaction mixture from a position near the bottom of the reaction vessel, circulating the withdrawn portion in at least one closed loop externally of the reaction vessel and reintroducing the withdrawn portion at a position near the top of the reaction vessel; continuously withdrawing styrenic/alkenylnitrile copolymer from the reaction vessel. The process and apparatus also involve novel means for evaporatively cooling the reaction mixture and for devolatilizing the product copolymer.
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Fuller Robert A.
Morris Jeffrey D.
Abokhair John K.
Caddell Michael J.
Cheairs M. Norwood
Cosden Technology, Inc.
Johnson William R.
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