ES2091390T3 - Un procedimiento para preparar poliamidas para espuma basada en poliisocianatos de color mas claro. - Google Patents
Un procedimiento para preparar poliamidas para espuma basada en poliisocianatos de color mas claro.Info
- Publication number
- ES2091390T3 ES2091390T3 ES92120304T ES92120304T ES2091390T3 ES 2091390 T3 ES2091390 T3 ES 2091390T3 ES 92120304 T ES92120304 T ES 92120304T ES 92120304 T ES92120304 T ES 92120304T ES 2091390 T3 ES2091390 T3 ES 2091390T3
- Authority
- ES
- Spain
- Prior art keywords
- procedure
- light color
- foam based
- preparing polyamides
- polyisocyanates
- Prior art date
- 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 - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7685—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing two or more non-condensed aromatic rings directly linked to each other
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2101/00—Manufacture of cellular products
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Phenolic Resins Or Amino Resins (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
LA PRESENTE INVENCION SE REFIERE A UN PROCESO MEJORADO PARA LA PREPARACION DE POLIFENILPOLIISOCIANATOS DE POLIMETILENO QUE CONSISTE EN HACER REACCIONAR FOSGENO CON UNA POLIFENILPOLIAMINA DE POLIMETILENO, EN DONDE LA MEJORA CONSISTE EN QUE LA POLIFENILPOLIAMINA DE POLIMETILENO SE ACIDULA ANTES DE LA FOSGENACION.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/805,407 US5386059A (en) | 1991-12-10 | 1991-12-10 | Process for preparing polyamines for lighter color polyisocyanate based foam |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2091390T3 true ES2091390T3 (es) | 1996-11-01 |
Family
ID=25191496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES92120304T Expired - Lifetime ES2091390T3 (es) | 1991-12-10 | 1992-11-27 | Un procedimiento para preparar poliamidas para espuma basada en poliisocianatos de color mas claro. |
Country Status (8)
Country | Link |
---|---|
US (2) | US5386059A (es) |
EP (1) | EP0546398B1 (es) |
JP (1) | JP3352739B2 (es) |
KR (1) | KR100244696B1 (es) |
BR (1) | BR9204958A (es) |
CA (1) | CA2084957C (es) |
DE (1) | DE69213678T2 (es) |
ES (1) | ES2091390T3 (es) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19711447A1 (de) * | 1997-03-19 | 1998-09-24 | Basf Ag | Verfahren zur Herstellung von Isocyanaten mit heller Farbe |
DE19928741A1 (de) | 1999-06-23 | 2000-12-28 | Basf Ag | Helle Isocyanate, Verfahren zu deren Herstellung und deren Verwendung |
DE10211021A1 (de) * | 2002-03-13 | 2003-09-25 | Bayer Ag | Verfahren zur Herstellung von Polyisocyanaten der Diphenylmethanreihe mit vermindertem Farbwert |
US20060117964A1 (en) * | 2004-06-18 | 2006-06-08 | Cauchois Sean M | Method for generating a smoke |
DE102006002157A1 (de) * | 2006-01-17 | 2007-07-19 | Bayer Materialscience Ag | Verfahren zur Herstellung heller Isocyanate |
EP2060560B1 (en) | 2007-11-14 | 2016-04-13 | Covestro Deutschland AG | Preparation of light-colored isocyanates |
ES2608486T5 (es) * | 2008-11-26 | 2020-05-19 | Huntsman Int Llc | Procedimiento para fabricar isocianatos |
EP2454193B1 (en) | 2009-07-16 | 2014-04-09 | Basf Se | Process for the preparation of light-colored isocyanates of the diphenylmethanediisocyanate series |
HUE027504T2 (en) | 2011-10-21 | 2016-10-28 | Covestro Deutschland Ag | Process for the preparation of light-colored polyisocyanates |
CN109761855B (zh) * | 2018-12-20 | 2020-07-28 | 万华化学集团股份有限公司 | 一种制备异佛尔酮二异氰酸酯的方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE794327A (fr) * | 1972-01-26 | 1973-07-19 | Ici Ltd | Procede de production de polyphenylpolyisocyanates |
DE2356828C2 (de) * | 1973-11-14 | 1982-10-21 | Bayer Ag, 5090 Leverkusen | Verfahren zur Herstellung von Polyaminen und ihre Verwendung als Ausgangsmaterial zur Herstellung von Polyisocyanaten |
DE2404774A1 (de) * | 1974-02-01 | 1975-08-21 | Basf Ag | Verfahren zur herstellung von organischen isocyanaten |
DE2750975A1 (de) * | 1976-11-19 | 1978-05-24 | Mobay Chemical Corp | Verfahren zur herstellung von polyaminen der diphenylmethan-reihe |
US4465639A (en) * | 1983-01-26 | 1984-08-14 | The Upjohn Company | Process for polyisocyanates |
US4792624A (en) * | 1987-02-26 | 1988-12-20 | The Dow Chemical Company | Process for polymeric MDA, recycle of finished polymeric MDA |
US5173521A (en) * | 1990-06-19 | 1992-12-22 | Mishima Paper Co., Ltd. | Absorbent fibrous structure and producing method thereof |
DE4112131A1 (de) * | 1991-04-13 | 1992-10-15 | Bayer Ag | Verfahren zur herstellung von mehrkernigen aromatischen polyaminen |
US5310769A (en) * | 1992-05-01 | 1994-05-10 | Bayer Aktiengesellschaft | Process for the production of polyamine mixtures of the polyamino-polyaryl-polymethylene series |
US5312971A (en) * | 1992-07-23 | 1994-05-17 | Miles Inc. | Color reduction of polymethylene polyphenyl polyisocyanates |
US5286760A (en) * | 1992-10-09 | 1994-02-15 | Miles, Inc. | Process for reducing impurity levels in methylene diphenyamines |
-
1991
- 1991-12-10 US US07/805,407 patent/US5386059A/en not_active Expired - Lifetime
-
1992
- 1992-11-27 ES ES92120304T patent/ES2091390T3/es not_active Expired - Lifetime
- 1992-11-27 EP EP92120304A patent/EP0546398B1/en not_active Expired - Lifetime
- 1992-11-27 DE DE69213678T patent/DE69213678T2/de not_active Expired - Fee Related
- 1992-12-08 JP JP35141192A patent/JP3352739B2/ja not_active Expired - Fee Related
- 1992-12-09 KR KR1019920023674A patent/KR100244696B1/ko not_active IP Right Cessation
- 1992-12-09 CA CA002084957A patent/CA2084957C/en not_active Expired - Fee Related
- 1992-12-09 BR BR9204958A patent/BR9204958A/pt not_active Application Discontinuation
-
1994
- 1994-10-13 US US08/322,815 patent/US5484819A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0546398B1 (en) | 1996-09-11 |
US5484819A (en) | 1996-01-16 |
DE69213678T2 (de) | 1997-01-23 |
EP0546398A3 (en) | 1993-09-01 |
CA2084957C (en) | 2003-06-17 |
BR9204958A (pt) | 1993-06-15 |
JPH05320297A (ja) | 1993-12-03 |
JP3352739B2 (ja) | 2002-12-03 |
EP0546398A2 (en) | 1993-06-16 |
KR100244696B1 (ko) | 2000-02-15 |
DE69213678D1 (de) | 1996-10-17 |
US5386059A (en) | 1995-01-31 |
CA2084957A1 (en) | 1993-06-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
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