IT1101429B - Procedimento per la desublimazione frazionata della dianidride piromellitica - Google Patents

Procedimento per la desublimazione frazionata della dianidride piromellitica

Info

Publication number
IT1101429B
IT1101429B IT30031/78A IT3003178A IT1101429B IT 1101429 B IT1101429 B IT 1101429B IT 30031/78 A IT30031/78 A IT 30031/78A IT 3003178 A IT3003178 A IT 3003178A IT 1101429 B IT1101429 B IT 1101429B
Authority
IT
Italy
Prior art keywords
procedure
pyromellite
dianhydride
desublimation
fractional
Prior art date
Application number
IT30031/78A
Other languages
English (en)
Other versions
IT7830031A0 (it
Original Assignee
Veba Chemie Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Veba Chemie Ag filed Critical Veba Chemie Ag
Publication of IT7830031A0 publication Critical patent/IT7830031A0/it
Application granted granted Critical
Publication of IT1101429B publication Critical patent/IT1101429B/it

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D7/00—Sublimation
    • B01D7/02—Crystallisation directly from the vapour phase
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/54—Preparation of carboxylic acid anhydrides
    • C07C51/573—Separation; Purification; Stabilisation; Use of additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
IT30031/78A 1977-11-22 1978-11-22 Procedimento per la desublimazione frazionata della dianidride piromellitica IT1101429B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772751979 DE2751979A1 (de) 1977-11-22 1977-11-22 Verfahren zur fraktionierten desublimation von pyromellitsaeuredianhydrid

Publications (2)

Publication Number Publication Date
IT7830031A0 IT7830031A0 (it) 1978-11-22
IT1101429B true IT1101429B (it) 1985-09-28

Family

ID=6024250

Family Applications (1)

Application Number Title Priority Date Filing Date
IT30031/78A IT1101429B (it) 1977-11-22 1978-11-22 Procedimento per la desublimazione frazionata della dianidride piromellitica

Country Status (6)

Country Link
US (1) US4252545A (it)
EP (1) EP0002095B1 (it)
JP (1) JPS5479245A (it)
DE (2) DE2751979A1 (it)
IT (1) IT1101429B (it)
SU (1) SU1039443A3 (it)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3421301A1 (de) * 1984-06-08 1985-12-12 Hüls AG, 4370 Marl Verfahren zur herstellung von pyromellitsaeuredianhydrid
CS253476B1 (en) * 1985-07-16 1987-11-12 Jaroslav Vitovec Method of phtalic anhydride vapours' continuous desublimation
JPS6310790A (ja) * 1986-03-17 1988-01-18 Nippon Shokubai Kagaku Kogyo Co Ltd 無水ピロメリツト酸の捕集方法
JP3908325B2 (ja) * 1997-04-07 2007-04-25 株式会社日本触媒 昇華性物質の回収方法
US6117213A (en) * 1999-05-07 2000-09-12 Cbl Technologies, Inc. Particle trap apparatus and methods
CN1102419C (zh) * 1999-12-22 2003-03-05 中国科学院山西煤炭化学研究所 一种燃油脱除高浓度二氧化氮的方法及其设备
CN1114464C (zh) * 1999-12-22 2003-07-16 中国科学院山西煤炭化学研究所 一种处理高浓度二氧化氮废气的方法及其设备
JP4626031B2 (ja) * 2000-08-23 2011-02-02 三菱瓦斯化学株式会社 高純度ピロメリット酸および高純度無水ピロメリット酸の製造方法
JP3949371B2 (ja) * 2000-11-08 2007-07-25 株式会社日本触媒 逆昇華性物質の捕集方法
JP2004067527A (ja) * 2002-08-02 2004-03-04 Nippon Shokubai Co Ltd 昇華性物質の回収方法
KR100575847B1 (ko) * 2005-04-29 2006-05-03 이앙구 반도체 및 평판디스플레이 설비의 부산물 포집방법
CN102336761A (zh) * 2010-12-17 2012-02-01 常熟市联邦化工有限公司 一种均苯四甲酸二酐的捕集提纯方法
DE102015101398A1 (de) * 2015-01-30 2016-08-04 Kelvion Gmbh Diskontinuierlich arbeitender Desublimator zur Trennung von Produkten aus Gasgemischen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE569706A (it) * 1957-07-26
NL122353C (it) * 1958-06-23
CH472364A (de) * 1966-12-22 1969-05-15 Geigy Ag J R Verfahren zur Herstellung eines neuen polycyclischen Amins
FR2221574A1 (en) * 1973-03-12 1974-10-11 Protex Manuf Prod Chimiq Shrink proofing and non-felting of wool - by treatment with known water-sol. cationic resins
US4036594A (en) * 1973-12-17 1977-07-19 Veba-Chemie Ag Apparatus for recovering higher melting organic materials via fractional sublimation
DE2362659C2 (de) * 1973-12-17 1982-12-23 Chemische Werke Hüls AG, 4370 Marl Verfahren und Vorrichtung zur Gewinnung von höherschmelzenden organischen Stoffen durch fraktionierte Desublimation

Also Published As

Publication number Publication date
DE2860988D1 (en) 1981-11-19
JPS5479245A (en) 1979-06-25
IT7830031A0 (it) 1978-11-22
SU1039443A3 (ru) 1983-08-30
JPH0142953B2 (it) 1989-09-18
DE2751979A1 (de) 1979-05-23
US4252545A (en) 1981-02-24
EP0002095B1 (de) 1981-08-26
EP0002095A1 (de) 1979-05-30

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