CN1049649C - 从粗乙酸酐或粗乙酸酐与粗乙酸的混合物中除去碘化合物的方法 - Google Patents

从粗乙酸酐或粗乙酸酐与粗乙酸的混合物中除去碘化合物的方法 Download PDF

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Publication number: CN1049649C
Authority: CN; China
Prior art keywords: thick; acetic anhydride; mixture; crude acetic; diacetyl oxide
Prior art date: 1993-05-31
Legal status (The legal status 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 status listed.): Expired - Fee Related

Application number

CN94107588A

Other languages

English (en)

Chinese (zh)

Other versions

CN1101033A (zh

Inventor

笼谷昌宏

辻康雄

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Daicel Corp

Original Assignee

Daicel Chemical Industries Ltd

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.)

1993-05-31

Filing date

1994-05-31

Publication date

2000-02-23

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=14989592&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CN1049649(C) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1994-05-31 Application filed by Daicel Chemical Industries Ltd filed Critical Daicel Chemical Industries Ltd

1995-04-05 Publication of CN1101033A publication Critical patent/CN1101033A/zh

2000-02-23 Application granted granted Critical

2000-02-23 Publication of CN1049649C publication Critical patent/CN1049649C/zh

2014-05-31 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 title claims abstract description 343
239000000203 mixture Substances 0.000 title claims abstract description 88
238000000034 method Methods 0.000 title claims abstract description 51
150000002497 iodine compounds Chemical class 0.000 title claims abstract description 36
OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 90
238000004821 distillation Methods 0.000 claims abstract description 60
XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims abstract description 55
KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 claims abstract description 55
-1 alkali metal salts Chemical class 0.000 claims abstract description 51
238000006243 chemical reaction Methods 0.000 claims abstract description 38
229910052783 alkali metal Inorganic materials 0.000 claims abstract description 26
XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 claims abstract description 22
INQOMBQAUSQDDS-UHFFFAOYSA-N iodomethane Chemical compound IC INQOMBQAUSQDDS-UHFFFAOYSA-N 0.000 claims abstract description 21
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
229910052739 hydrogen Inorganic materials 0.000 claims description 11
239000001257 hydrogen Substances 0.000 claims description 11
UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 10
150000003284 rhodium compounds Chemical class 0.000 claims description 10
239000012295 chemical reaction liquid Substances 0.000 claims description 6
238000001704 evaporation Methods 0.000 claims description 4
238000007669 thermal treatment Methods 0.000 claims description 4
230000008020 evaporation Effects 0.000 claims description 3
150000003839 salts Chemical class 0.000 claims description 2
QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims 8
238000007599 discharging Methods 0.000 claims 2
QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract description 194
229910052784 alkaline earth metal Inorganic materials 0.000 abstract description 25
238000010438 heat treatment Methods 0.000 abstract description 17
238000009835 boiling Methods 0.000 abstract description 6
239000002585 base Substances 0.000 abstract 1
VMGAPWLDMVPYIA-HIDZBRGKSA-N n'-amino-n-iminomethanimidamide Chemical compound N\N=C\N=N VMGAPWLDMVPYIA-HIDZBRGKSA-N 0.000 abstract 1
BOLDJAUMGUJJKM-LSDHHAIUSA-N renifolin D Natural products CC(=C)[C@@H]1Cc2c(O)c(O)ccc2[C@H]1CC(=O)c3ccc(O)cc3O BOLDJAUMGUJJKM-LSDHHAIUSA-N 0.000 abstract 1
LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 38
239000000243 solution Substances 0.000 description 23
229910000043 hydrogen iodide Inorganic materials 0.000 description 15
ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 14
LEKJTGQWLAUGQA-UHFFFAOYSA-N acetyl iodide Chemical compound CC(I)=O LEKJTGQWLAUGQA-UHFFFAOYSA-N 0.000 description 14
239000003054 catalyst Substances 0.000 description 14
229910052740 iodine Inorganic materials 0.000 description 14
239000011630 iodine Substances 0.000 description 14
229910052703 rhodium Inorganic materials 0.000 description 9
239000010948 rhodium Substances 0.000 description 9
MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 9
150000001340 alkali metals Chemical class 0.000 description 8
HSZCZNFXUDYRKD-UHFFFAOYSA-M lithium iodide Chemical compound [Li+].[I-] HSZCZNFXUDYRKD-UHFFFAOYSA-M 0.000 description 8
150000001342 alkaline earth metals Chemical class 0.000 description 7
239000007788 liquid Substances 0.000 description 7
150000001875 compounds Chemical class 0.000 description 6
238000005810 carbonylation reaction Methods 0.000 description 5
XMBWDFGMSWQBCA-UHFFFAOYSA-M iodide Chemical compound [I-] XMBWDFGMSWQBCA-UHFFFAOYSA-M 0.000 description 5
229940006461 iodide ion Drugs 0.000 description 5
239000002994 raw material Substances 0.000 description 5
239000002841 Lewis acid Substances 0.000 description 4
KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 description 4
AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 4
229910052782 aluminium Inorganic materials 0.000 description 4
229910002091 carbon monoxide Inorganic materials 0.000 description 4
230000000694 effects Effects 0.000 description 4
150000004694 iodide salts Chemical class 0.000 description 4
238000010992 reflux Methods 0.000 description 4
239000012266 salt solution Substances 0.000 description 4
WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
150000001639 boron compounds Chemical class 0.000 description 3
239000007795 chemical reaction product Substances 0.000 description 3
150000001845 chromium compounds Chemical class 0.000 description 3
239000003426 co-catalyst Substances 0.000 description 3
239000012043 crude product Substances 0.000 description 3
XIXADJRWDQXREU-UHFFFAOYSA-M lithium acetate Chemical compound [Li+].CC([O-])=O XIXADJRWDQXREU-UHFFFAOYSA-M 0.000 description 3
150000002642 lithium compounds Chemical class 0.000 description 3
150000003003 phosphines Chemical class 0.000 description 3
239000000047 product Substances 0.000 description 3
150000003856 quaternary ammonium compounds Chemical class 0.000 description 3
CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 2
UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
150000001242 acetic acid derivatives Chemical class 0.000 description 2
229910001516 alkali metal iodide Inorganic materials 0.000 description 2
229910000272 alkali metal oxide Inorganic materials 0.000 description 2
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 2
239000004327 boric acid Substances 0.000 description 2
150000004649 carbonic acid derivatives Chemical class 0.000 description 2
230000006315 carbonylation Effects 0.000 description 2
150000001735 carboxylic acids Chemical class 0.000 description 2
ZQMIGQNCOMNODD-UHFFFAOYSA-N diacetyl peroxide Chemical compound CC(=O)OOC(C)=O ZQMIGQNCOMNODD-UHFFFAOYSA-N 0.000 description 2
150000004679 hydroxides Chemical class 0.000 description 2
238000011835 investigation Methods 0.000 description 2
BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
238000000746 purification Methods 0.000 description 2
238000000926 separation method Methods 0.000 description 2
239000003381 stabilizer Substances 0.000 description 2
239000000126 substance Substances 0.000 description 2
ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical group [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
230000001133 acceleration Effects 0.000 description 1
125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 1
HDYRYUINDGQKMC-UHFFFAOYSA-M acetyloxyaluminum;dihydrate Chemical compound O.O.CC(=O)O[Al] HDYRYUINDGQKMC-UHFFFAOYSA-M 0.000 description 1
239000002253 acid Substances 0.000 description 1
239000003513 alkali Substances 0.000 description 1
229940009827 aluminum acetate Drugs 0.000 description 1
239000007864 aqueous solution Substances 0.000 description 1
230000015572 biosynthetic process Effects 0.000 description 1
239000006227 byproduct Substances 0.000 description 1
230000003197 catalytic effect Effects 0.000 description 1
238000006555 catalytic reaction Methods 0.000 description 1
229920002301 cellulose acetate Polymers 0.000 description 1
239000003153 chemical reaction reagent Substances 0.000 description 1
230000000052 comparative effect Effects 0.000 description 1
238000011109 contamination Methods 0.000 description 1
238000005260 corrosion Methods 0.000 description 1
230000007797 corrosion Effects 0.000 description 1
230000007812 deficiency Effects 0.000 description 1
230000001419 dependent effect Effects 0.000 description 1
239000003814 drug Substances 0.000 description 1
239000000975 dye Substances 0.000 description 1
238000005516 engineering process Methods 0.000 description 1
239000003344 environmental pollutant Substances 0.000 description 1
CCGKOQOJPYTBIH-UHFFFAOYSA-N ethenone Chemical compound C=C=O CCGKOQOJPYTBIH-UHFFFAOYSA-N 0.000 description 1
238000004880 explosion Methods 0.000 description 1
238000011049 filling Methods 0.000 description 1
239000003205 fragrance Substances 0.000 description 1
125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
150000002496 iodine Chemical class 0.000 description 1
150000002500 ions Chemical class 0.000 description 1
239000007791 liquid phase Substances 0.000 description 1
238000004519 manufacturing process Methods 0.000 description 1
238000002156 mixing Methods 0.000 description 1
VGTPKLINSHNZRD-UHFFFAOYSA-N oxoborinic acid Chemical compound OB=O VGTPKLINSHNZRD-UHFFFAOYSA-N 0.000 description 1
231100000719 pollutant Toxicity 0.000 description 1
229920000642 polymer Polymers 0.000 description 1
239000011736 potassium bicarbonate Substances 0.000 description 1
235000015497 potassium bicarbonate Nutrition 0.000 description 1
229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
235000015320 potassium carbonate Nutrition 0.000 description 1
229910000027 potassium carbonate Inorganic materials 0.000 description 1
TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
235000011118 potassium hydroxide Nutrition 0.000 description 1
238000004445 quantitative analysis Methods 0.000 description 1
239000011541 reaction mixture Substances 0.000 description 1
229910000029 sodium carbonate Inorganic materials 0.000 description 1
235000017550 sodium carbonate Nutrition 0.000 description 1
235000011121 sodium hydroxide Nutrition 0.000 description 1
239000007858 starting material Substances 0.000 description 1
238000003786 synthesis reaction Methods 0.000 description 1
238000005979 thermal decomposition reaction Methods 0.000 description 1

Classifications

- 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
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S203/00—Distillation: processes, separatory
- Y10S203/20—Power plant

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Engineering & Computer Science (AREA)
Oil, Petroleum & Natural Gas (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

CN94107588A 1993-05-31 1994-05-31 从粗乙酸酐或粗乙酸酐与粗乙酸的混合物中除去碘化合物的方法 Expired - Fee Related CN1049649C (zh)

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
JP5128631		1993-05-31
JP12863193A JP3377555B2 (ja)	1993-05-31	1993-05-31	カルボニル化反応生成物に含有されるヨウ素化合物の除去方法
JP128631/93		1993-05-31

Publications (2)

Publication Number	Publication Date
CN1101033A CN1101033A (zh)	1995-04-05
CN1049649C true CN1049649C (zh)	2000-02-23

Family

ID=14989592

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CN94107588A Expired - Fee Related CN1049649C (zh)	1993-05-31	1994-05-31	从粗乙酸酐或粗乙酸酐与粗乙酸的混合物中除去碘化合物的方法

Country Status (7)

Country	Link
US (1)	US5653853A (2)
EP (1)	EP0632007B1 (2)
JP (1)	JP3377555B2 (2)
KR (1)	KR0125303B1 (2)
CN (1)	CN1049649C (2)
DE (1)	DE69409714T2 (2)
TW (1)	TW320567B (2)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP4489487B2 (ja) *	2004-04-02	2010-06-23	ダイセル化学工業株式会社	ヨウ化水素の分離方法
CN103189125A (zh) *	2010-11-12	2013-07-03	伊士曼化工公司	羰基化过程产生的气流的处理
CN103370300B (zh)	2010-12-15	2016-07-06	株式会社大赛璐	乙酸的制备方法
KR101865436B1 (ko) *	2010-12-24	2018-06-07	주식회사 다이셀	아세트산의 제조 방법
BR112013016630B1 (pt)	2010-12-30	2022-03-03	Celanese International Corporation	Composição de resina de troca iônica, leito de proteção e processo para purificar uma composição de ácido acético bruto
CN106715379B (zh)	2014-10-02	2020-05-19	国际人造丝公司	用于生产乙酸的方法
US9260369B1 (en)	2014-11-14	2016-02-16	Celanese International Corporation	Processes for producing acetic acid product having low butyl acetate content
US9302975B1 (en)	2015-07-01	2016-04-05	Celanese International Corporation	Process for flashing a reaction medium
MX2017009867A (es)	2015-01-30	2017-11-15	Celanese Int Corp	Procedimientos para producir acido acetico.
MY181741A (en)	2015-01-30	2021-01-06	Celanese Int Corp	Processes for producing acetic acid
US9561994B2 (en)	2015-01-30	2017-02-07	Celanese International Corporation	Processes for producing acetic acid
US9487464B2 (en)	2015-01-30	2016-11-08	Celanese International Corporation	Processes for producing acetic acid
US9512056B2 (en)	2015-02-04	2016-12-06	Celanese International Corporation	Process to control HI concentration in residuum stream
US9505696B2 (en)	2015-02-04	2016-11-29	Celanese International Corporation	Process to control HI concentration in residuum stream
US10413840B2 (en)	2015-02-04	2019-09-17	Celanese International Coporation	Process to control HI concentration in residuum stream
JP5866474B1 (ja) *	2015-02-04	2016-02-17	セラニーズ・インターナショナル・コーポレーション	残渣流中のｈｉ濃度を制御するプロセス
US9302974B1 (en)	2015-07-01	2016-04-05	Celanese International Corporation	Process for producing acetic acid
US9382183B1 (en)	2015-07-01	2016-07-05	Celanese International Corporation	Process for flashing a reaction medium
RS63644B1 (sr)	2015-10-02	2022-10-31	Celanese Int Corp	Postupak za proizvodnju sirćetne kiseline recikliranjem vode
US9957216B2 (en)	2015-11-13	2018-05-01	Celanese International Corporation	Processes for producing acetic acid
US9908835B2 (en)	2015-11-13	2018-03-06	Celanese International Corporation	Processes for purifying acetic and hydrating anhydride
US10807935B2 (en)	2018-11-02	2020-10-20	Celanese International Corporation	Process for continuous acetic acid production
US20230127564A1 (en)	2020-04-01	2023-04-27	Celanese International Corporation	Processes for removing and/or reducing permanganate reducing compounds and alkyl iodides
KR20230019134A (ko)	2020-06-03	2023-02-07	셀라니즈 인터내셔날 코포레이션	아세트산의 생성 및 정제

Citations (2)

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Publication number	Priority date	Publication date	Assignee	Title
EP0075730A1 (de) *	1981-09-23	1983-04-06	Hoechst Aktiengesellschaft	Verfahren zur Rückgewinnung von Jodverbindungen aus dem Abgas von Carbonylierungsreaktionen
EP0132391A2 (en) *	1983-07-20	1985-01-30	BP Chemicals Limited	Process for the production of acetic anhydride

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US3425798A (en) *	1966-01-10	1969-02-04	Eastman Kodak Co	Process for the removal of iodine from organic compounds
DE3045081A1 (de) *	1980-11-29	1982-07-01	Basf Ag, 6700 Ludwigshafen	Verfahren zur abtrennung organischer jod-verbindung en von acetaldehydfreien carbonylierungsprodukten des methanols, methylacetates und dimethylethers
US4340569A (en) *	1981-03-06	1982-07-20	The Halcon Sd Group, Inc.	Treatment of carbonylation residues
JPS58116436A (ja) *	1981-12-28	1983-07-11	Mitsubishi Gas Chem Co Inc	無水酢酸の精製法
DE3329781A1 (de) *	1983-08-18	1985-02-28	Hoechst Ag, 6230 Frankfurt	Verfahren zur abtrennung von jod und dessen verbindungen aus den bei der carbonylierung von dimethylether, methylacetat oder methanol erhaltenen carbonylierungsprodukten
US5026908A (en) *	1984-05-03	1991-06-25	Hoechst Celanese Corporation	Methanol carbonylation process
JPS618811A (ja) *	1984-06-22	1986-01-16	古河電気工業株式会社	同軸ケ−ブル
CA1299195C (en) *	1986-06-16	1992-04-21	G. Paull Torrence	Addition of hydrogen to carbon monoxide feed gas in producing acetic acid by carbonylation of methanol
GB9100216D0 (en) *	1991-01-05	1991-02-20	Bp Chem Int Ltd	Process
US5175362A (en) *	1991-05-29	1992-12-29	Eastman Kodak Company	Recovery of acetyl values from ethylidene diacetate
GB9120902D0 (en) *	1991-10-02	1991-11-13	Bp Chem Int Ltd	Purification process
GB9305902D0 (en) *	1993-03-22	1993-05-12	Bp Chem Int Ltd	Process
US5502249A (en) *	1994-05-31	1996-03-26	Eastman Chemical Company	Process for the removal of iodine from acetyl compounds

1993
- 1993-05-31 JP JP12863193A patent/JP3377555B2/ja not_active Expired - Fee Related
1994
- 1994-05-27 EP EP94108218A patent/EP0632007B1/en not_active Revoked
- 1994-05-27 DE DE69409714T patent/DE69409714T2/de not_active Revoked
- 1994-05-28 TW TW083104879A patent/TW320567B/zh active
- 1994-05-31 KR KR1019940012176A patent/KR0125303B1/ko not_active Expired - Fee Related
- 1994-05-31 CN CN94107588A patent/CN1049649C/zh not_active Expired - Fee Related
1996
- 1996-06-03 US US08/657,427 patent/US5653853A/en not_active Expired - Fee Related

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0075730A1 (de) *	1981-09-23	1983-04-06	Hoechst Aktiengesellschaft	Verfahren zur Rückgewinnung von Jodverbindungen aus dem Abgas von Carbonylierungsreaktionen
EP0132391A2 (en) *	1983-07-20	1985-01-30	BP Chemicals Limited	Process for the production of acetic anhydride

Also Published As

Publication number	Publication date
DE69409714D1 (de)	1998-05-28
TW320567B (2)	1997-11-21
JPH06340576A (ja)	1994-12-13
JP3377555B2 (ja)	2003-02-17
US5653853A (en)	1997-08-05
CN1101033A (zh)	1995-04-05
EP0632007A1 (en)	1995-01-04
KR0125303B1 (ko)	1997-12-01
DE69409714T2 (de)	1998-08-13
EP0632007B1 (en)	1998-04-22

Legal Events

Date	Code	Title
1995-04-05	C06	Publication
1995-04-05	PB01	Publication
1996-04-24	C10	Entry into substantive examination
1996-04-24	SE01	Entry into force of request for substantive examination
2000-02-23	C14	Grant of patent or utility model
2000-02-23	GR01	Patent grant
2008-07-30	C19	Lapse of patent right due to non-payment of the annual fee
2008-07-30	CF01	Termination of patent right due to non-payment of annual fee

Publication	Publication Date	Title
CN1049649C (zh)	2000-02-23	从粗乙酸酐或粗乙酸酐与粗乙酸的混合物中除去碘化合物的方法
US7678940B2 (en)	2010-03-16	Process for producing carboxylic acid
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