ES460560A1 - Procedimiento para la obtencion de isomeros de diisocianato-difenilmetano. - Google Patents

Procedimiento para la obtencion de isomeros de diisocianato-difenilmetano.

Info

Publication number: ES460560A1
Authority: ES; Spain
Prior art keywords: diisocyanatodiphenylmethane; column; fraction; chlorine compounds; methaneisomers
Prior art date: 1976-07-10
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

Application number

ES460560A

Other languages

English (en)

Spanish (es)

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.)

Bayer AG

Original Assignee

Bayer 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.)

1976-07-10

Filing date

1977-07-08

Publication date

1978-05-16

1977-07-08 Application filed by Bayer AG filed Critical Bayer AG

1978-05-16 Publication of ES460560A1 publication Critical patent/ES460560A1/es

Status Expired legal-status Critical Current

Links

150000001805 chlorine compounds Chemical class 0.000 title abstract 2
238000000034 method Methods 0.000 title abstract 2
238000004821 distillation Methods 0.000 abstract 3
LFSYUSUFCBOHGU-UHFFFAOYSA-N 1-isocyanato-2-[(4-isocyanatophenyl)methyl]benzene Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=CC=C1N=C=O LFSYUSUFCBOHGU-UHFFFAOYSA-N 0.000 abstract 2
LNWBFIVSTXCJJG-UHFFFAOYSA-N [diisocyanato(phenyl)methyl]benzene Chemical class C=1C=CC=CC=1C(N=C=O)(N=C=O)C1=CC=CC=C1 LNWBFIVSTXCJJG-UHFFFAOYSA-N 0.000 abstract 2
UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 abstract 1
CZZYITDELCSZES-UHFFFAOYSA-N diphenylmethane Chemical class C=1C=CC=CC=1CC1=CC=CC=C1 CZZYITDELCSZES-UHFFFAOYSA-N 0.000 abstract 1
238000007700 distillative separation Methods 0.000 abstract 1
DYDNPESBYVVLBO-UHFFFAOYSA-N formanilide Chemical compound O=CNC1=CC=CC=C1 DYDNPESBYVVLBO-UHFFFAOYSA-N 0.000 abstract 1
239000012535 impurity Substances 0.000 abstract 1
239000000203 mixture Substances 0.000 abstract 1
SYSQUGFVNFXIIT-UHFFFAOYSA-N n-[4-(1,3-benzoxazol-2-yl)phenyl]-4-nitrobenzenesulfonamide Chemical class C1=CC([N+](=O)[O-])=CC=C1S(=O)(=O)NC1=CC=C(C=2OC3=CC=CC=C3N=2)C=C1 SYSQUGFVNFXIIT-UHFFFAOYSA-N 0.000 abstract 1
229920001228 polyisocyanate Polymers 0.000 abstract 1
239000005056 polyisocyanate Substances 0.000 abstract 1
238000000746 purification Methods 0.000 abstract 1
238000010992 reflux Methods 0.000 abstract 1

Classifications

- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C263/00—Preparation of derivatives of isocyanic acid
- C07C263/18—Separation; Purification; Stabilisation; Use of additives
- C07C263/20—Separation; Purification

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

ES460560A 1976-07-10 1977-07-08 Procedimiento para la obtencion de isomeros de diisocianato-difenilmetano. Expired ES460560A1 (es)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE19762631168 DE2631168B2 (de)	1976-07-10	1976-07-10	Verfahren zur Herstellung von Diisocyanatodiphenylmethan-Isomeren mit einem eingestellten Gehalt an Chlorverbindungen

Publications (1)

Publication Number	Publication Date
ES460560A1 true ES460560A1 (es)	1978-05-16

Family

ID=5982715

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ES460560A Expired ES460560A1 (es)	1976-07-10	1977-07-08	Procedimiento para la obtencion de isomeros de diisocianato-difenilmetano.

Country Status (6)

Country	Link
JP (1)	JPS539750A (de)
BE (1)	BE856617A (de)
DE (1)	DE2631168B2 (de)
ES (1)	ES460560A1 (de)
FR (1)	FR2357532A1 (de)
GB (1)	GB1570741A (de)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS54102320A (en) *	1978-01-31	1979-08-11	Ricoh Kk	Lens bonding and apparatus therefor
JPS54102321A (en) *	1978-01-31	1979-08-11	Ricoh Kk	Removing bubbles in lens bonding
JPS54103415A (en) *	1978-01-31	1979-08-14	Ricoh Kk	Lens bonding
DE2935318A1 (de) *	1979-08-31	1981-03-26	Bayer Ag, 51373 Leverkusen	Neue diisocyanate bzw. diisocyanatgemische der diphenylmethanreihe, verfahren zu ihrer herstellung, sowie ihre verwendung als aufbaukomponente bei der herstellung von polyurethankunststoffen nach dem isocyanat-polyadditionsverfahren
JPH02311452A (ja) *	1989-05-26	1990-12-27	Daicel Chem Ind Ltd	ジイソシアネート化合物
JP2875877B2 (ja) *	1990-10-23	1999-03-31	三井化学株式会社	メチレン架橋ポリフェニレンポリイソシアネートの製造方法
DE19914291A1 (de)	1999-03-30	2000-10-05	Bayer Ag	Verfahren zur Absenkung des Chlorgehaltes von niedermolekularen Isocyanaten
DE19914292A1 (de)	1999-03-30	2000-10-05	Bayer Ag	Verfahren zur Verringerung des Chlorgehaltes von organischen Isocyanaten
EP1475367B1 (de) *	2003-05-08	2010-07-07	Bayer MaterialScience AG	Verfahren zur Destillation eines Gemisches isomerer Diisocyanatodiphenylmethane
DE102004005319A1 (de)	2004-02-04	2005-08-25	Bayer Materialscience Ag	Verfahren zur Herstellung von hochreinem 2,4'-Methylendiphenyldiisocyanat
DE102005004170A1 (de) *	2005-01-29	2006-08-03	Bayer Materialscience Ag	Verfahren zur Destillation eines Gemisches isomerer Diisocyanatodiphenylmethane
DE102005026864A1 (de)	2005-06-10	2006-12-14	Bayer Materialscience Ag	Verfahren zur Herstellung von 4,4'-Diphenylmethandiisocyanat
DE102005053065A1 (de) *	2005-11-04	2007-05-10	Basf Ag	Verfahren zur Herstellung von Polyisocyanatgemischen
US9505711B2 (en)	2010-11-17	2016-11-29	Basf Se	Method for purifying mixtures comprising 4,4′-methylenediphenyl diisocyanate
EP2640694B1 (de)	2010-11-17	2019-01-09	Basf Se	Verfahren zur herstellung von methylendiphenyldiisocyanat
JP2014500878A (ja) *	2010-11-17	2014-01-16	ビーエーエスエフソシエタス・ヨーロピア	４，４’−メチレンジフェニルジイソシアネートを含む混合物を精錬するための方法
US8907124B2 (en)	2010-11-17	2014-12-09	Basf Se	Process for preparing methylenedi(phenyl isocyanate)
KR101898743B1 (ko) *	2010-11-17	2018-09-13	바스프 에스이	4,4'-메틸렌디페닐 디이소시아네이트를 포함하는 혼합물의 정제 방법
JP2015010183A (ja) *	2013-06-28	2015-01-19	旭化成ケミカルズ株式会社	ジイソシアネート組成物
WO2016120167A1 (de)	2015-01-30	2016-08-04	Basf Se	Nebenproduktarme polyphenylenpolymethylenpolyisocyanate
EP3498689A1 (de) *	2017-12-14	2019-06-19	Sulzer Chemtech AG	Anlage und verfahren zur reinigung eines isomeren monomers wie z. b. 4,4 '-methylendiphenyldiisocyanat aus einem rohgemisch
KR20250027813A (ko) *	2022-11-17	2025-02-27	완후아 케미컬 그룹 코., 엘티디	이소시아네이트 조성물, 개질된 조성물 및 폴리우레탄 탄성체

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3219678A (en) *	1963-02-28	1965-11-23	Olin Mathieson	Process for reducing the hydrolyzable chlorine content of organic isocyanates
DE1805957A1 (de) *	1967-10-31	1969-06-26	Takeda Chemical Industries Ltd	Verfahren zur Reinigung von Xylylendiisocyanat
GB1398975A (en) *	1971-08-16	1975-06-25	Ici Ltd	Heat treatment and distillation of methylene bridged polyphenyl polyisocyanates
GB1384065A (en) *	1971-11-30	1975-02-19	Ici Ltd	Process for the purification of organic isocyanates
US3853936A (en) *	1973-02-05	1974-12-10	Olin Corp	Process for distillation of toluene diisocyanate
US3912600A (en) *	1974-05-09	1975-10-14	Upjohn Co	Recovery of polymethylene polyphenyl polyisocyanate from a phoshenosed polyamine feed

1976
- 1976-07-10 DE DE19762631168 patent/DE2631168B2/de not_active Ceased
1977
- 1977-07-07 GB GB2851477A patent/GB1570741A/en not_active Expired
- 1977-07-08 FR FR7721174A patent/FR2357532A1/fr active Granted
- 1977-07-08 BE BE179183A patent/BE856617A/xx not_active IP Right Cessation
- 1977-07-08 ES ES460560A patent/ES460560A1/es not_active Expired
- 1977-07-08 JP JP8111477A patent/JPS539750A/ja active Pending

Also Published As

Publication number	Publication date
DE2631168A1 (de)	1978-01-12
GB1570741A (en)	1980-07-09
FR2357532B1 (de)	1980-10-17
DE2631168B2 (de)	1979-03-08
FR2357532A1 (fr)	1978-02-03
BE856617A (fr)	1978-01-09
JPS539750A (en)	1978-01-28

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Legal Events

Date	Code	Title	Description
1999-08-16	FD1A	Patent lapsed	Effective date: 19990601