FR2360619A1 - Fabrication de polyurethanes a partir d'uree - Google Patents

Fabrication de polyurethanes a partir d'uree

Info

Publication number
FR2360619A1
FR2360619A1 FR7624154A FR7624154A FR2360619A1 FR 2360619 A1 FR2360619 A1 FR 2360619A1 FR 7624154 A FR7624154 A FR 7624154A FR 7624154 A FR7624154 A FR 7624154A FR 2360619 A1 FR2360619 A1 FR 2360619A1
Authority
FR
France
Prior art keywords
urea
polyurethane foams
prodn
isocyanate
poly
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.)
Withdrawn
Application number
FR7624154A
Other languages
English (en)
Inventor
Claude Bovis
Jacky Luneteau
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.)
Naphtachimie SA
Original Assignee
Naphtachimie SA
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 Naphtachimie SA filed Critical Naphtachimie SA
Priority to FR7624154A priority Critical patent/FR2360619A1/fr
Priority to NL7708573A priority patent/NL7708573A/xx
Priority to DE19772735244 priority patent/DE2735244A1/de
Priority to BE179929A priority patent/BE857516A/fr
Priority to IT2653977A priority patent/IT1085357B/it
Priority to ES461400A priority patent/ES461400A1/es
Publication of FR2360619A1 publication Critical patent/FR2360619A1/fr
Withdrawn legal-status Critical Current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
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/38—Low-molecular-weight compounds having heteroatoms other than oxygen
    • C08G18/3819—Low-molecular-weight compounds having heteroatoms other than oxygen having nitrogen
    • C08G18/3823—Low-molecular-weight compounds having heteroatoms other than oxygen having nitrogen containing -N-C=O groups
    • C08G18/3829—Low-molecular-weight compounds having heteroatoms other than oxygen having nitrogen containing -N-C=O groups containing ureum groups

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)

Abstract

L'invention a pour objet un procédé de fabrication de polyuréthanes. Ce procédé consiste, dans une première étape à préparer un dérivé de l'urée par addition d'un ou plusieurs oxydes d'alcoylène sur de l'urée puis, dans une seconde étape, à faire réagir le dérivé de l'urée ainsi obtenu avec un ou plusieurs polyisocyanates organiques, le procédé étant caractérisé en ce que le dérivé de l'urée de la premier étape est obtenu par addition sur de l'urée, de 1 à 3 moles d'un ou plusieurs oxydes d'alcoylène par mole d'urée, en l'absence de composés basiques, à une température comprise entre 100 et 140 degrés C et, de préférence, entre 110 et 130 degrés C. L'invention est particulièrement applicable à la fabrication de mousses rigides de polyuréthane résistant à l'inflammation.
FR7624154A 1976-08-06 1976-08-06 Fabrication de polyurethanes a partir d'uree Withdrawn FR2360619A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR7624154A FR2360619A1 (fr) 1976-08-06 1976-08-06 Fabrication de polyurethanes a partir d'uree
NL7708573A NL7708573A (nl) 1976-08-06 1977-08-03 Bereiding van polyurethanen uitgaande van ureum.
DE19772735244 DE2735244A1 (de) 1976-08-06 1977-08-04 Verfahren zur herstellung von polyurethanen, insbesondere polyurethan- hartschaumstoffen
BE179929A BE857516A (fr) 1976-08-06 1977-08-05 Procede de fabrication de polyurethanes a partir de l'uree
IT2653977A IT1085357B (it) 1976-08-06 1977-08-05 Fabbricazione di poliuretani a partire da urea
ES461400A ES461400A1 (es) 1976-08-06 1977-08-05 Procedimiento de fabricacion de poliuretanos.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7624154A FR2360619A1 (fr) 1976-08-06 1976-08-06 Fabrication de polyurethanes a partir d'uree

Publications (1)

Publication Number Publication Date
FR2360619A1 true FR2360619A1 (fr) 1978-03-03

Family

ID=9176651

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7624154A Withdrawn FR2360619A1 (fr) 1976-08-06 1976-08-06 Fabrication de polyurethanes a partir d'uree

Country Status (6)

Country Link
BE (1) BE857516A (fr)
DE (1) DE2735244A1 (fr)
ES (1) ES461400A1 (fr)
FR (1) FR2360619A1 (fr)
IT (1) IT1085357B (fr)
NL (1) NL7708573A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0135832A2 (fr) * 1983-09-10 1985-04-03 Bayer Ag Utilisation de polyhydroxyalkyl-mono-urées dans des mousses de polyuréthane, dispersions des polyhydroxyalkyl-mono-urées dans des polyols et tris-hydroxyalkyl-mono-urées
US4874797A (en) * 1985-10-08 1989-10-17 Bayer Aktiengesellschaft Oligourea polyols, polyether polyols produced from them and the use of these polyols in the isocyanate polyaddition process

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0135832A2 (fr) * 1983-09-10 1985-04-03 Bayer Ag Utilisation de polyhydroxyalkyl-mono-urées dans des mousses de polyuréthane, dispersions des polyhydroxyalkyl-mono-urées dans des polyols et tris-hydroxyalkyl-mono-urées
EP0135832A3 (en) * 1983-09-10 1985-10-02 Bayer Ag Use of polyhydroxyalkyl mono-urea for polyurethane foams, dispersions of the polyhydroxyalkyl mono-urea in polyols and tris-hydroxyalkyl mono-urea
US4546121A (en) * 1983-09-10 1985-10-08 Bayer Aktiengesellschaft Use of polyhydroxyalkyl monoureas for polyurethane foams, dispersions of the polyhydroxyalkyl monoureas in polyols and new tris-hydroxyalkyl monoureas
US4874797A (en) * 1985-10-08 1989-10-17 Bayer Aktiengesellschaft Oligourea polyols, polyether polyols produced from them and the use of these polyols in the isocyanate polyaddition process

Also Published As

Publication number Publication date
IT1085357B (it) 1985-05-28
BE857516A (fr) 1978-02-06
ES461400A1 (es) 1978-05-16
DE2735244A1 (de) 1978-02-09
NL7708573A (nl) 1978-02-08

Similar Documents

Publication Publication Date Title
ES456177A1 (es) Procedimiento para la obtencion de materiales espumados en poliisocianurato termoconformables.
NO177353C (no) Fremgangsmåte for fremstilling av et mykt, fleksibelt polyuretanskum, polyuretanskum oppnådd ved fremgangsmåten, samt forblandingsmateriale for fremstilling av polyuretaner
ATE107939T1 (de) Polyurethanschaumstoffherstellung.
DE3856094D1 (de) Polyurethanschaumherstellung
GB1390702A (en) Flexible cellular foam compositions having increased flame retardance
GB1499283A (en) Process for producing a flame-and smoke-retarded non-shrinkable polyurethane foam
GB1091604A (en) Improvements in or relating to polyurethane foams
GB1423239A (en) Light-stable polyurethane foam
GB1133691A (en) Polyurethane foams
FR2360619A1 (fr) Fabrication de polyurethanes a partir d'uree
ATE156154T1 (de) Flammwidrige polyurethanweichschaumstoffe
JPS5698222A (en) Preparation of polyurethane foam having self-skin layer
GB1425494A (en) Flexible polyetherurethane foams
GB1233614A (fr)
CA2035930A1 (fr) Mousses rigides a alveoles substantiellement fermees renfermant de l'urethane, de l'uree et des groupements biuret et methode pour les obtenir
GB1120273A (en) Polyurethane foams
FR2381077A1 (fr) Procede de fabrication de polyurethanes a partir d'uree
ES403448A1 (es) Procedimiento para la obtencion de materiales espumados du-ros, resistentes a la inflamacion.
GB1098127A (en) Polyurethanes
GB1498506A (en) Flexible cellular polyurethane foam compositions having increased flame retardance
GB1091629A (en) Polyurethane foams
GB1389932A (en) Flexible polyurethane foams
ES481144A1 (es) Procedimiento de fabricacion de espumas flexibles de poliuretano de alta elasticidad.
GB1166289A (en) Hydrophilic Polyurethane Foam and Method of Making Same
JPS5328699A (en) Manufacture of highly elastic urethane foams

Legal Events

Date Code Title Description
ST Notification of lapse