SE365496BSE16839/68ASE1683968ASE365496BSE 365496 BSE365496 BSE 365496BSE 16839/68 ASE16839/68 ASE 16839/68ASE 1683968 ASE1683968 ASE 1683968ASE 365496 BSE365496 BSE 365496B
Authority
SE
Sweden
Application number
SE16839/68A
Inventor
G Richter
Original Assignee
Gelsenberg Benzin Ag
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Publication date
Application filed by Gelsenberg Benzin AgfiledCriticalGelsenberg Benzin Ag
Publication of SE365496BpublicationCriticalpatent/SE365496B/xx
B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01D—SEPARATION
B01D7/00—Sublimation
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
C07C51/42—Separation; Purification; Stabilisation; Use of additives
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07D—HETEROCYCLIC COMPOUNDS
C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
C07D307/89—Benzo [c] furans; Hydrogenated benzo [c] furans with two oxygen atoms directly attached in positions 1 and 3
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07D—HETEROCYCLIC COMPOUNDS
C07D493/00—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system
C07D493/02—Heterocyclic compounds containing oxygen atoms as the only ring hetero atoms in the condensed system in which the condensed system contains two hetero rings
C07D493/04—Ortho-condensed systems
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Engineering & Computer Science
(AREA)
Oil, Petroleum & Natural Gas
(AREA)
Chemical Kinetics & Catalysis
(AREA)
Furan Compounds
(AREA)
Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur
(AREA)
Vaporization, Distillation, Condensation, Sublimation, And Cold Traps
(AREA)