Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Reexamination Certificate
2005-05-24
2005-05-24
Moore, Margaret G. (Department: 1712)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
C528S031000, C556S479000, C526S065000
Reexamination Certificate
active
06897280
ABSTRACT:
A process is disclosed for producing silicone copolymers, wherein the process comprises the steps of:(a) providing at least one multi-stage blade-mixed plug flow reactor having an entry and an exit;(b) continuously feeding (i) hydrogen siloxane, (ii) olefinically substituted polyether or olefin capable of reacting with said hydrogen siloxane, and (iii) catalyst for the reaction to the entry of the multi-stage blade-mixed plug flow reactor, and(c) continuously withdrawing from the exit of the multi-stage blade-mixed plug flow reactor a stream that comprises silicone copolymer and is substantially free of unreacted hydrogen siloxane, provided that said hydrogen siloxane and said polyether or olefin have a residence time at reaction temperature in the multi-stage blade-mixed plug flow reactor sufficient to effect substantially complete hydrosilation.
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Austin Paul E.
Davis David B.
Farris David D.
Heisler Ladislau
General Electric Company
Moore Margaret G.
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