ES2043945T3 - Mezclas liquidas de poliisocianato, un procedimiento para su obtencion y su empleo para la elaboracion de plasticos espumados blandos de poliuretano. - Google Patents

Mezclas liquidas de poliisocianato, un procedimiento para su obtencion y su empleo para la elaboracion de plasticos espumados blandos de poliuretano.

Info

Publication number
ES2043945T3
ES2043945T3 ES89109105T ES89109105T ES2043945T3 ES 2043945 T3 ES2043945 T3 ES 2043945T3 ES 89109105 T ES89109105 T ES 89109105T ES 89109105 T ES89109105 T ES 89109105T ES 2043945 T3 ES2043945 T3 ES 2043945T3
Authority
ES
Spain
Prior art keywords
polyisocyanate
elaboration
procedure
obtaining
foamed polyurethane
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
ES89109105T
Other languages
English (en)
Inventor
Peter Dr Gansen
Klaus-Dieter Dr Wolf
Klaus Dr Seel
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.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Application granted granted Critical
Publication of ES2043945T3 publication Critical patent/ES2043945T3/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
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
    • 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
    • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • 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
    • C08G18/08—Processes
    • C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
    • 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
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4829—Polyethers containing at least three hydroxy groups
    • 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
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4833—Polyethers containing oxyethylene units
    • C08G18/4837—Polyethers containing oxyethylene units and other oxyalkylene units
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0008—Foam properties flexible
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0041—Foam properties having specified density
    • C08G2110/005—< 50kg/m3
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0041—Foam properties having specified density
    • C08G2110/0058—≥50 and <150kg/m3
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0083—Foam properties prepared using water as the sole blowing agent

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)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Materials For Medical Uses (AREA)
  • Medicinal Preparation (AREA)

Abstract

NUEVAS MEZCLAS LIQUIDAS DE POLIISOCIANATO CON GRUPOS URETANO CON UN CONTENIDO EN NCO DE 15 A 30% DEL PESO, OBTENIDAS POR REACCION DE A1) POLIISOCIANATOS O MEZCLAS DE POLIISOCIANATOS DE LA SERIE DIFENILMETANO CON B) CANTIDADES DEFICITARIAS DE AL MENOS UN POLIOL DE POLIETER DE UN PESO (MEDIO) HIDROXIL EQUIVALENTE DE 500 A 3000 Y UNA FUNCIONALIDAD (MEDIA) HIDROXILO DE MAS DE 4, Y, EN SU CASO, MEZCLA DEL PRODUCTO DE REACCION CON A2) POLIISOCIANATOS O MEZCLAS DE POLIISOCIANATOS SIN GRUPOS URETANO DE LA SERIE DIFENILMETANO , SIENDO EL CONTENIDO DE LOS COMPONENTES A1) Y A2) EN ISOMEROS DE DIISOCIANATO - DIFENILMETANO EN TOTAL DE 50 A 95% DEL PESO. SE DESCRIBE ASIMISMO UN PROCESO PARA LA PRODUCCION DE ESTAS MEZCLAS DE ISOCIANATO POR REACCION Y, EN SU CASO, MEZCLA DE LOS COMPONENTES DE PARTIDA MENCIONADOS Y EL USO DE LAS MEZCLAS DE POLIISOCIANATO EN LA PRODUCCION DE ESPUMAS BLANDAS DE POLIURETANO.
ES89109105T 1988-06-02 1989-05-20 Mezclas liquidas de poliisocianato, un procedimiento para su obtencion y su empleo para la elaboracion de plasticos espumados blandos de poliuretano. Expired - Lifetime ES2043945T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3818769A DE3818769A1 (de) 1988-06-02 1988-06-02 Fluessige polyisocyanatmischungen, ein verfahren zu ihrer herstellung und ihre verwendung zur herstellung von polyurethan-weichschaumstoffen

Publications (1)

Publication Number Publication Date
ES2043945T3 true ES2043945T3 (es) 1994-01-01

Family

ID=6355691

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89109105T Expired - Lifetime ES2043945T3 (es) 1988-06-02 1989-05-20 Mezclas liquidas de poliisocianato, un procedimiento para su obtencion y su empleo para la elaboracion de plasticos espumados blandos de poliuretano.

Country Status (14)

Country Link
US (1) US4945117A (es)
EP (1) EP0344551B1 (es)
JP (1) JP2727016B2 (es)
KR (1) KR910000931A (es)
AT (1) ATE82757T1 (es)
AU (1) AU612255B2 (es)
BR (1) BR8902554A (es)
CA (1) CA1308514C (es)
DE (2) DE3818769A1 (es)
DK (1) DK170782B1 (es)
ES (1) ES2043945T3 (es)
FI (1) FI95141C (es)
NO (1) NO173448C (es)
ZA (1) ZA894132B (es)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02145557A (ja) * 1988-11-28 1990-06-05 Sumitomo Bayer Urethane Kk 変性ポリメチレンポリフェニルポリイソシアネート
DE3901189A1 (de) * 1989-01-17 1990-09-20 Bayer Ag Verfahren zur herstellung von polyurethan-weichformschaumstoffen niedriger rohdichte
GB8908490D0 (en) * 1989-04-14 1989-06-01 Ici Plc Prepolymers
IT1229755B (it) * 1989-05-17 1991-09-10 Montedipe Spa Composizioni poliisocianiche e loro impiego nella preparazione di schiume poliuretaniche flessibili.
JPH0733423B2 (ja) * 1989-10-03 1995-04-12 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
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
DE4001556A1 (de) * 1990-01-20 1991-07-25 Bayer Ag Neue polyisocyanatmischungen und ihre verwendung bei der herstellung von weichen polyurethan-schaumstoffen
AU636191B2 (en) * 1990-02-01 1993-04-22 Huntsman Ici Chemicals Llc Manufacturing of polymeric foams from polyisocyanate compositions
DE4006248A1 (de) * 1990-02-28 1991-08-29 Bayer Ag Gemische aus urethangruppen enthaltenden praepolymeren und diisocyanatotoluolen sowie ihre verwendung
DE69129434T2 (de) * 1990-10-12 1998-10-01 Ici Plc Kontinuierliches Verfahren zur Herstellung von Isocyanat enthaltenden Präpolymeren und daraus hergestellte Polyurethan-Schäume
US5114989A (en) * 1990-11-13 1992-05-19 The Dow Chemical Company Isocyanate-terminated prepolymer and polyurethane foam prepared therefrom
IT1246042B (it) * 1990-11-16 1994-11-07 Montedipe Srl Schiume poliuretaniche flessibili e procedimento per la loro preparazione
WO1993008224A1 (en) * 1991-10-25 1993-04-29 The Dow Chemical Company Polyisocyanate compositions and rigid polyurethane foam therefrom
DE4200157A1 (de) * 1992-01-07 1993-07-08 Bayer Ag Fluessige helle polyisocyanatgemische, ein verfahren zu ihrer herstellung und ihre verwendung bei der herstellung von hellen, harten polyurethan-schaumstoffen
IT1260446B (it) * 1992-01-27 1996-04-09 Enichem Polimeri Schiume poliuretaniche flessibili e procedimento per la loro preparazione
DE4203918A1 (de) * 1992-02-11 1993-08-12 Basf Ag Verfahren zur herstellung von fluorchlorkohlenwasserstoff-freien polyurethan-weichschaumstoffen unter verwendung von urethangruppen enthaltenden polyisocyanatmischungen auf diphenylmethan-diisocyanatbasis sowie derartige modifizierte polyisocyanatmischungen
US5491175A (en) * 1992-04-10 1996-02-13 The Dow Chemical Company Polyurethane foam molding
US5621016A (en) * 1992-04-16 1997-04-15 Imperial Chemical Industries Plc Polyisocyanate compositions and low density flexible polyurethane foams produced therewith
DE69307943T3 (de) * 1992-04-16 2003-01-30 Huntsman Ici Chemicals Llc Sal Polyisocyanatzusammensetzung
CA2117740A1 (en) * 1993-10-28 1995-04-29 Michael F. Hurley Polyisocyanate based upon 4,4'-and 2,4'-diphenylmethane diisocyanates and use thereof in a rim process
DE4337012A1 (de) * 1993-10-29 1995-05-04 Bayer Ag Verfahren zur Herstellung halbharter Urethangruppen aufweisender Schaumstoffe mit verbesserten Fließeigenschaften
GB9325043D0 (en) † 1993-12-07 1994-02-02 Polyol Int Bv Polyol compositions and their use in the preparation of high resilience polyurethane foams
US5494942A (en) * 1993-12-27 1996-02-27 The Dow Chemical Company Process for preparing a rigid polyurethane foam and laminate articles therewith
DE4411781A1 (de) * 1994-04-06 1995-10-12 Basf Ag Verfahren zur Herstellung von Fluorchlorkohlenwasserstoff freien hochelastischen Polyurethan-Weichschaumstoffen und hierfür verwendbare, mit Urethangruppen modifizierte Polyisocyanatmischungen auf Diphenylmethan-diisocyanatbasis
TW290564B (es) * 1994-06-16 1996-11-11 Ici Plc
US5674920A (en) * 1994-12-08 1997-10-07 Mitsui Toatsu Chemicals, Inc. Flexible high resilience polyurethane foam
DE69620907T2 (de) * 1995-11-30 2002-09-26 Huntsman Int Llc Verfahren zur herstellung eines polyurethan-weichschaumstoffs
US5750583A (en) * 1997-05-28 1998-05-12 Bayer Corporation Process for the production of molded polyurethane products
KR100250945B1 (ko) * 1997-07-29 2000-04-15 최종세 레피어직기의 그리퍼헤드를 왕복이동시키는 동력장치
US5821275A (en) * 1997-11-10 1998-10-13 Bayer Corporation Flexible foams and flexible molded foams based on liquid isocyanate-terminated allophanate-modified MDI prepolymer blends and processes for the production of these foams
US5874485A (en) * 1997-11-10 1999-02-23 Bayer Corporation Flexible foams and flexible molded foams based on allophanate-modified diphenylmethane diisocyanates and processes for the production of these foams
JP2003520873A (ja) * 2000-01-17 2003-07-08 ハンツマン・インターナショナル・エルエルシー フリーライズまたはスラブストック軟質ポリウレタンフォームの製造方法
US6271279B1 (en) 2000-07-10 2001-08-07 Bayer Corporation High resilient flexible urethane foam and flexible molded foams based on allophanate modified isocyanates
KR100376284B1 (ko) * 2000-10-25 2003-03-17 학교법인 한양학원 질소-치환 폴리우레탄계 고체 고분자 전해질 조성물
US6750367B2 (en) * 2002-05-09 2004-06-15 Bayer Polymers Llc Tetralin isocyanates
JP5957001B2 (ja) 2010-11-03 2016-07-27 ダウ グローバル テクノロジーズ エルエルシー 自己破砕性ポリウレタン系
KR20210044853A (ko) * 2018-08-16 2021-04-23 바스프 에스이 폴리이소시아네이트 조성물, 이로부터 수득된 폴리우레탄 폼 및 이의 용도

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE22617C (de) * 1882-10-17 1883-06-30 E. A. BARBET in La Madeleinelez-Lille, Frankreich Kombination von Lochplatten und Kappen, anwendbar an Destillir- und Rectificir-Apparaten
GB947482A (en) * 1958-12-30 1964-01-22 Isocyanate Products Inc Novel polyurethane foams
DE1618380C3 (de) * 1967-03-08 1975-09-11 Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung eines bei Raumtemperatur flüssigen Diphenylmethan-diisocyanatpräparates
US3737391A (en) * 1971-02-25 1973-06-05 Ici America Inc Polyethers and polyurethanes
GB1377676A (en) * 1972-09-21 1974-12-18 Ici Ltd Isocyanate compositions
GB1430455A (en) * 1973-01-29 1976-03-31 Ici Ltd Isocyanate compositions
GB1369334A (en) * 1973-06-05 1974-10-02 Ici Ltd Liquid isocyanate compositions
GB1450660A (en) * 1974-04-03 1976-09-22 Ici Ltd Polyisocyanates
GB1444192A (en) * 1974-04-03 1976-07-28 Ici Ltd Polyisocyanate compositions
JPS5169596A (en) * 1974-12-13 1976-06-16 Asahi Denka Kogyo Kk Horiuretanfuoomuno seizohoho
DE2624526B2 (de) * 1976-06-01 1981-06-25 Bayer Ag, 5090 Leverkusen Verfahren zur Herstellung von modifizierten Polyisocyanaten der Diphenylmethanreihe
US4055548A (en) * 1976-09-17 1977-10-25 The Upjohn Company Storage-stable liquid polyisocyanate composition
GB1596469A (en) * 1978-04-11 1981-08-26 Ici Ltd Liquid isocyanate compositions based on diphenylmethane diisocyanate
EP0010850B2 (en) * 1978-10-03 1990-01-31 Imperial Chemical Industries Plc Liquid polyisocyanate compositions
DE3241450A1 (de) * 1982-11-10 1984-05-10 Basf Ag, 6700 Ludwigshafen Fluessige urethangruppen enthaltende polyisocyanatmischungen auf diphenylmethan-diisocyanat-basis, verfahren zu deren herstellung und deren verwendung zur herstellung von polyurethan-weichschaumstoffen
JPS62184008A (ja) * 1986-02-07 1987-08-12 Dai Ichi Kogyo Seiyaku Co Ltd ウレタンプレポリマ−組成物
NZ226008A (en) * 1987-09-21 1990-11-27 Ici Plc Process for manufacture of polyurethane foams using methylene diphenyl isocyanates and optionally water as blowing agent

Also Published As

Publication number Publication date
DE58902800D1 (de) 1993-01-07
FI892645A0 (fi) 1989-05-31
AU3383489A (en) 1989-12-07
FI95141B (fi) 1995-09-15
DK267389A (da) 1989-12-03
NO892007L (no) 1989-12-04
FI95141C (fi) 1995-12-27
US4945117A (en) 1990-07-31
EP0344551B1 (de) 1992-11-25
BR8902554A (pt) 1990-01-23
EP0344551A2 (de) 1989-12-06
EP0344551A3 (en) 1990-07-04
DK170782B1 (da) 1996-01-15
KR910000931A (ko) 1991-01-30
CA1308514C (en) 1992-10-06
JPH0229417A (ja) 1990-01-31
DK267389D0 (da) 1989-06-01
ATE82757T1 (de) 1992-12-15
ZA894132B (en) 1990-03-28
DE3818769A1 (de) 1989-12-07
NO173448B (no) 1993-09-06
JP2727016B2 (ja) 1998-03-11
NO892007D0 (no) 1989-05-19
AU612255B2 (en) 1991-07-04
FI892645A (fi) 1989-12-03
NO173448C (no) 1993-12-15

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