DE2425658A1 - Polyisocyanate - Google Patents

Polyisocyanate

Info

Publication number: DE2425658A1
Authority: DE; Germany
Prior art keywords: product; mixture; diphenylmethane diisocyanate; aniline; formaldehyde
Prior art date: 1973-05-29
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.): Ceased

Application number

DE19742425658

Other languages

German (de)

English (en)

Inventor

Vincent Kerrigan

Clifford Toyne

Harry James Twitchett

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.)

Imperial Chemical Industries Ltd

Original Assignee

Imperial 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.)

1973-05-29

Filing date

1974-05-28

Publication date

1974-12-19

1974-05-28 Application filed by Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd

1974-12-19 Publication of DE2425658A1 publication Critical patent/DE2425658A1/de

Status Ceased legal-status Critical Current

Links

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
- 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)
Polyurethanes Or Polyureas (AREA)

DE19742425658 1973-05-29 1974-05-28 Polyisocyanate Ceased DE2425658A1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB2537073A GB1417087A (en)	1973-05-29	1973-05-29	Polyisocyanates

Publications (1)

Publication Number	Publication Date
DE2425658A1 true DE2425658A1 (de)	1974-12-19

Family

ID=10226582

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE19742425658 Ceased DE2425658A1 (de)	1973-05-29	1974-05-28	Polyisocyanate

Country Status (10)

Country	Link
JP (1)	JPS5826337B2 (fr)
AR (1)	AR202214A1 (fr)
BE (1)	BE815525A (fr)
BR (1)	BR7404304D0 (fr)
DE (1)	DE2425658A1 (fr)
ES (1)	ES426730A1 (fr)
FR (1)	FR2231709B1 (fr)
GB (1)	GB1417087A (fr)
IT (1)	IT1012607B (fr)
NL (1)	NL7406894A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4287132A (en)	1980-09-29	1981-09-01	Atlantic Richfield Company	Preparation of polyisocyanates from polycarbamates
EP1475367A1 (fr) *	2003-05-08	2004-11-10	Bayer MaterialScience AG	Procédé de séparation par distillation de mélanges d'isomères de diisocyanato diphénylméthane

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1483957A (en) *	1975-05-19	1977-08-24	Ici Ltd	Diphenylmethane diisocyanate compositions
US4055548A (en) *	1976-09-17	1977-10-25	The Upjohn Company	Storage-stable liquid polyisocyanate composition
DE2815554A1 (de)	1978-04-11	1979-10-25	Basf Ag	Schwerentflammbare polyurethan-weichschaumstoffe
US4237240A (en)	1979-04-09	1980-12-02	Basf Aktiengesellschaft	Process for the manufacture of flexible polyurethane foams with high load-bearing and high energy-absorption capacity
JP2660588B2 (ja) *	1989-11-30	1997-10-08	日本ポリウレタン工業株式会社	軟質ポリウレタン発泡体の製造方法
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
DE4200236A1 (de) *	1992-01-08	1993-07-15	Bayer Ag	Verfahren zur isolierung von polyisocyanat-isomeren aus polyisocyanatgemischen
DE502004002275D1 (de) *	2003-09-24	2007-01-25	Basf Ag	Monomerarmes Gemisch, enthaltend polymeres MDI
CN102171180B (zh) *	2008-10-06	2014-05-14	亨茨曼国际有限公司	同时生产二苯甲烷系列的二异氰酸酯异构体的不同混合物的方法
EP3498689A1 (fr)	2017-12-14	2019-06-19	Sulzer Chemtech AG	Installation et procédé de purification d'un monomère d'isomères, tel que le diisocyanate de 4,4'-méthylènediphényle, à partir d'un mélange brut

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2105193C3 (de) *	1971-02-04	1981-07-09	Chemie-Anlagenbau Bischofsheim GmbH, 4500 Osnabrück	Verfahren zur Trennung eines organischen Polyisocyanatgemisches

1973
- 1973-05-29 GB GB2537073A patent/GB1417087A/en not_active Expired
1974
- 1974-05-17 IT IT2290574A patent/IT1012607B/it active
- 1974-05-22 NL NL7406894A patent/NL7406894A/xx not_active Application Discontinuation
- 1974-05-23 AR AR25388474A patent/AR202214A1/es active
- 1974-05-24 BE BE144742A patent/BE815525A/fr unknown
- 1974-05-27 BR BR430474A patent/BR7404304D0/pt unknown
- 1974-05-28 DE DE19742425658 patent/DE2425658A1/de not_active Ceased
- 1974-05-28 FR FR7418421A patent/FR2231709B1/fr not_active Expired
- 1974-05-28 JP JP49060178A patent/JPS5826337B2/ja not_active Expired
- 1974-05-29 ES ES426730A patent/ES426730A1/es not_active Expired

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4287132A (en)	1980-09-29	1981-09-01	Atlantic Richfield Company	Preparation of polyisocyanates from polycarbamates
EP1475367A1 (fr) *	2003-05-08	2004-11-10	Bayer MaterialScience AG	Procédé de séparation par distillation de mélanges d'isomères de diisocyanato diphénylméthane

Also Published As

Publication number	Publication date
BR7404304D0 (pt)	1975-09-30
NL7406894A (fr)	1974-12-03
AR202214A1 (es)	1975-05-23
BE815525A (fr)	1974-11-25
FR2231709B1 (fr)	1978-01-20
GB1417087A (en)	1975-12-10
IT1012607B (it)	1977-03-10
JPS5035142A (fr)	1975-04-03
ES426730A1 (es)	1976-07-01
FR2231709A1 (fr)	1974-12-27
JPS5826337B2 (ja)	1983-06-02

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WO2021122625A1 (fr)	2021-06-24	Procédé de production de diisocyanates et de polyisocyanates de la série du diphénylméthane
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DE2404170C3 (de)	1979-11-22	Kontinuierliches Verfahren zur teilweisen Abtrennung von 4,4'-Methylenbis (phenylisocyanat) aus einem Polymethylenpolyphenylpolyisocyanat-Ausgangsgemisch
DE1643583A1 (de)	1972-04-27	Verfahren zur Herstellung von praktisch reinem 2,4-Toluylendiisocyanat
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DE2322574A1 (de)	1973-11-22	Verfahren zur abtrennung von diphenylmethandiisocyanat aus einem rohen undestillierten polyisocyanatgemisch
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Legal Events

Date	Code	Title	Description
1981-11-05	8110	Request for examination paragraph 44
1982-09-09	8131	Rejection