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1. WO2016145274 - METHOD OF REMOVING ORGANOPOLYSILOXANES FROM A MIXTURE OF ORGANOPOLYSILOXANES

Publication Number WO/2016/145274
Publication Date 15.09.2016
International Application No. PCT/US2016/021918
International Filing Date 11.03.2016
IPC
C08G 77/36 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
77Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon
04Polysiloxanes
32Post-polymerisation treatment
36Fractionation
C08G 77/38 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
77Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon
04Polysiloxanes
38Polysiloxanes modified by chemical after-treatment
C08G 77/04 2006.01
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
77Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon
04Polysiloxanes
CPC
C08G 77/34
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
77Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
04Polysiloxanes
32Post-polymerisation treatment
34Purification
Applicants
  • DOW CORNING CORPORATION [US]/[US]
Inventors
  • BUESING, Chad, A.
  • DEPIERRO, Michael, A.
  • HAUSINGER, Michael, A.
  • VAN KOEVERING, Dennis, G.
Agents
  • FEWKES, Matthew, T.
Priority Data
62/131,59111.03.2015US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD OF REMOVING ORGANOPOLYSILOXANES FROM A MIXTURE OF ORGANOPOLYSILOXANES
(FR) PROCÉDÉ D'ÉLIMINATION D'ORGANOPOLYSILOXANES À PARTIR D'UN MÉLANGE D'ORGANOPOLYSILOXANES
Abstract
(EN)
A method for removing cyclic organopolysiloxanes from an organopolysiloxane mixture, the method comprising: i) contacting an organopolysiloxane mixture comprising a cyclic organopolysiloxane and a non-cyclic organopolysiloxane with nitrogen to form a first stream comprising the nitrogen and the cyclic organopolysiloxane and a second stream comprising the non-cyclic organopolysiloxane.
(FR)
L'invention concerne un procédé pour éliminer des organopolysiloxanes cycliques à partir d'un mélange d'organopolysiloxanes, le procédé comprenant les étapes consistant : i) à mettre en contact un mélange d'organopolysiloxanes comprenant un organopolysiloxane cyclique et un organopolysiloxane non cyclique avec de l'azote pour former un premier flux comprenant l'azote et l'organopolysiloxane cyclique et un second flux comprenant l'organopolysiloxane non cyclique.
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