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
Application number
ES92120304T
Other languages
English (en)
Inventor
Jeffrey S Bolton
Ramon Kalyanaraman
Steven L Schilling
Clarence D Blue
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
Bayer Corp
Original Assignee
Bayer AG
Bayer Corp
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 Bayer AG, Bayer Corp filed Critical Bayer AG
Application granted granted Critical
Publication of ES2091390T3 publication Critical patent/ES2091390T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (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.
ES92120304T 1991-12-10 1992-11-27 Un procedimiento para preparar poliamidas para espuma basada en poliisocianatos de color mas claro. Expired - Lifetime ES2091390T3 (es)

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 (11)

* Cited by examiner, † Cited by third party
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
HUE027861T2 (en) * 2007-11-14 2016-11-28 Covestro Deutschland Ag Preparation of pale isocyanates
HUE030997T2 (en) * 2008-11-26 2017-06-28 Huntsman Int Llc Process for the preparation of isocyanates
WO2011006970A1 (en) 2009-07-16 2011-01-20 Basf Se Process for the preparation of light-colored isocyanates of the diphenylmethanediisocyanate series
CN103874680B (zh) 2011-10-21 2016-07-06 拜耳知识产权有限责任公司 生产浅色多异氰酸酯的方法
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
CN112250584B (zh) * 2020-08-31 2024-06-25 万华化学集团股份有限公司 一种二苯基甲烷系列二胺与多胺制备过程中苯胺的回收利用方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
DE69213678T2 (de) 1997-01-23
JPH05320297A (ja) 1993-12-03
BR9204958A (pt) 1993-06-15
CA2084957A1 (en) 1993-06-11
KR100244696B1 (ko) 2000-02-15
EP0546398A2 (en) 1993-06-16
DE69213678D1 (de) 1996-10-17
US5386059A (en) 1995-01-31
EP0546398B1 (en) 1996-09-11
CA2084957C (en) 2003-06-17
US5484819A (en) 1996-01-16
JP3352739B2 (ja) 2002-12-03
EP0546398A3 (en) 1993-09-01

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