DISTILLATION OF HEXAMETHYLCYCLOTRISILOXANE

PROBLEM TO BE SOLVED: To provide a method for separating hexamethylcyclotrisiloxane suitable for synthesizing macromonomers from a crude mixture of hexamethylcyclotrisiloxane by using a conventional distillation equipment. SOLUTION: This distillation of a crude mixture of hexamethylcyclotrisiloxane...

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Hauptverfasser:	GORNOWICZ GERALD ALPHONSE, VOCI ROCCO JOSEPH
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Sprache:	eng
Schlagworte:	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING
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creator	GORNOWICZ GERALD ALPHONSE VOCI ROCCO JOSEPH
description	PROBLEM TO BE SOLVED: To provide a method for separating hexamethylcyclotrisiloxane suitable for synthesizing macromonomers from a crude mixture of hexamethylcyclotrisiloxane by using a conventional distillation equipment. SOLUTION: This distillation of a crude mixture of hexamethylcyclotrisiloxane and higher cyclopolysiloxane to obtain hexamethylcyclotrisiloxane comprises steps of: (I) mixing the crude mixture with an auxiliary solvent having a boiling point of 125-150 deg.C, and (II) distilling the mixture obtained by the step (I) by using equipment comprising a reboiler, fractional column and condenser to separate hexamethylcyclotrisiloxane from higher cyclopolysiloxane, thus, substantially preventing precipitation of solid hexamethylcyclotrisiloxane in the condenser.
format	Patent
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SOLUTION: This distillation of a crude mixture of hexamethylcyclotrisiloxane and higher cyclopolysiloxane to obtain hexamethylcyclotrisiloxane comprises steps of: (I) mixing the crude mixture with an auxiliary solvent having a boiling point of 125-150 deg.C, and (II) distilling the mixture obtained by the step (I) by using equipment comprising a reboiler, fractional column and condenser to separate hexamethylcyclotrisiloxane from higher cyclopolysiloxane, thus, substantially preventing precipitation of solid hexamethylcyclotrisiloxane in the condenser.</description><edition>6</edition><language>eng</language><subject>ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM ; CHEMISTRY ; METALLURGY ; ORGANIC CHEMISTRY ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; SEPARATION ; TRANSPORTING</subject><creationdate>1998</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19980303&DB=EPODOC&CC=JP&NR=H1059985A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76294</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19980303&DB=EPODOC&CC=JP&NR=H1059985A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>GORNOWICZ GERALD ALPHONSE</creatorcontrib><creatorcontrib>VOCI ROCCO JOSEPH</creatorcontrib><title>DISTILLATION OF HEXAMETHYLCYCLOTRISILOXANE</title><description>PROBLEM TO BE SOLVED: To provide a method for separating hexamethylcyclotrisiloxane suitable for synthesizing macromonomers from a crude mixture of hexamethylcyclotrisiloxane by using a conventional distillation equipment. 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subjects	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING
title	DISTILLATION OF HEXAMETHYLCYCLOTRISILOXANE
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