GB937069A - Polyurethane catalysts - Google Patents

Polyurethane catalysts

Info

Publication number
GB937069A
GB937069A GB1179660A GB1179660A GB937069A GB 937069 A GB937069 A GB 937069A GB 1179660 A GB1179660 A GB 1179660A GB 1179660 A GB1179660 A GB 1179660A GB 937069 A GB937069 A GB 937069A
Authority
GB
United Kingdom
Prior art keywords
catalyst
imidazole
polyol
reaction product
polyhydric alcohol
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
Application number
GB1179660A
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.)
Air Products and Chemicals Inc
Original Assignee
Air Products and Chemicals Inc
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 Air Products and Chemicals Inc filed Critical Air Products and Chemicals Inc
Publication of GB937069A publication Critical patent/GB937069A/en
Expired 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
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
    • C08G18/20—Heterocyclic amines; Salts thereof
    • C08G18/2009—Heterocyclic amines; Salts thereof containing one heterocyclic ring
    • C08G18/2027—Heterocyclic amines; Salts thereof containing one heterocyclic ring having two nitrogen atoms in the ring
    • 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
    • C08G18/16—Catalysts
    • C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
    • C08G18/20—Heterocyclic amines; Salts thereof

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

A process of preparing polyurethanes comprises reacting a polyol with an organic polyisocyanate in the presence of catalyst comprising a secondary imidazole. In the production of polyurethane foam products the polyol has terminal hydroxy groups and the secondary imidazole is a 2-alkyl imidazole free from substituents in the 1 and 3 positions, the alkyl group containing 1 or 2 carbon atoms, and the reaction product is formed into a foam by the action of a blowing agent. The polyol may be an hydroxy polyester being the reaction product of a polyhydric alcohol with a polycarboxylic acid, or an hydroxy polyether being the reaction product of a polyhydric alcohol with a polyhydric alcohol containing only carbon, hydrogen and oxygen atoms. The catalyst can also include a tertiary amine, in particular diaza-bicyclo-octane. There may further be present an organometallic catalyst such as dibutyltin dilaurate. 2-Methyl, 2-ethyl and 2,4-dimethyl imidazoles are specified catalysts. Blowing can be produced by the presence of water and/or a volatile haloalkane in the reaction mixture. In examples foams are prepared with 2-methyl imidazole as catalyst from polypropylene glycol mixed with a glycerine polypropoxide triol and also from a polyester. Polyesters from dimer acids and from polyhydric ether-alcohols can also be used.ALSO:A process of preparing polyurethanes comprises reacting a polyol with an organic polyisocyanate in the presence of catalyst comprising a secondary imidazole. In the production of polyurethane foam products the polyol has terminal hydroxy groups and the secondary imidazole is a 2-alkyl imidazole free from substitutents in the 1 and 3 positions, the alkyl group containing 1 or 2 carbon atoms, and the reaction product is formed into a foam by the action of a blowing agent. The polyol may be an hydroxy polyester being the reaction product of a polyhydric alcohol with a polycarboxylic acid, or an hydroxy polyether being the reaction product of a polyhydric alcohol with a polyhydric alcohol containing only carbon, hydrogen and oxygen atoms. The catalyst can also include a tertiary amine, in particular diazabicyclooctane. There may further be present an organometallic catalyst such dibutyltin dilaurate. 2-Methyl, 2-ethyl and 2, 4-dimethyl imidazoles are specified catalysts. Blowing can be produced by the presence of water and/or a volatile haloalkane in the reaction mixture. In examples foams are prepared with 2-methyl imidazole as catalyst from polypropylene glycol mixed with a glycerine polypropoxide triol and also from a polyester. Polyesters from dimer acids and from polyhydric ether-alcohols can also be used.
GB1179660A 1959-04-08 1960-04-04 Polyurethane catalysts Expired GB937069A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80488459A 1959-04-08 1959-04-08

Publications (1)

Publication Number Publication Date
GB937069A true GB937069A (en) 1963-09-18

Family

ID=25190110

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1179660A Expired GB937069A (en) 1959-04-08 1960-04-04 Polyurethane catalysts

Country Status (4)

Country Link
BE (1) BE589560A (en)
DE (1) DE1168633B (en)
GB (1) GB937069A (en)
NL (1) NL250335A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005903A2 (en) * 1978-05-30 1979-12-12 Imperial Chemical Industries Plc Process for the manufacture of polyurea foams

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1222666B (en) * 1964-10-20 1966-08-11 Basf Ag Process for the production of polyurethane foams
US3661808A (en) * 1970-07-31 1972-05-09 Jefferson Chem Co Inc Catalyst combination for polyurethanes
GB1548370A (en) * 1975-06-24 1979-07-11 Ici Ltd Polyurea foams
US4376832A (en) * 1981-12-07 1983-03-15 Texaco Inc. Catalyst-solvent system for polyester-based polyurethane foams comprising N-butylmorpholine and N,N'-dimethylpiperazine and the solvent
DE3938203A1 (en) * 1989-11-17 1991-05-23 Basf Ag Catalyst soln. of polyurethane prodn. - comprises ferric cpd., aromatic carbonyl or alcohol, and opt. imidazole or benzimidazole cpd. in poly:ol

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE962113C (en) * 1953-08-19 1957-04-18 Bayer Ag Process for the production of foams based on polyesters containing urethane groups
DE960855C (en) * 1954-08-20 1957-03-28 Bayer Ag Process for the production of foams containing urethane groups
NL104983C (en) * 1955-03-04

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005903A2 (en) * 1978-05-30 1979-12-12 Imperial Chemical Industries Plc Process for the manufacture of polyurea foams
EP0005903A3 (en) * 1978-05-30 1980-01-09 Imperial Chemical Industries Plc Process for the manufacture of polyurea foams

Also Published As

Publication number Publication date
NL250335A (en)
BE589560A (en)
DE1168633B (en) 1964-04-23

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