GB1520846A - Isocyanates - Google Patents

Isocyanates

Info

Publication number
GB1520846A
GB1520846A GB21061/76A GB2106176A GB1520846A GB 1520846 A GB1520846 A GB 1520846A GB 21061/76 A GB21061/76 A GB 21061/76A GB 2106176 A GB2106176 A GB 2106176A GB 1520846 A GB1520846 A GB 1520846A
Authority
GB
United Kingdom
Prior art keywords
tolylene diisocyanate
oxypropylated
mixture
polyisocyanate composition
tolylene
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
GB21061/76A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB21061/76A priority Critical patent/GB1520846A/en
Priority to DE19772718512 priority patent/DE2718512A1/en
Priority to IT23060/77A priority patent/IT1125749B/en
Priority to NL7704842A priority patent/NL7704842A/en
Priority to BE177624A priority patent/BE854695A/en
Priority to SE7705806A priority patent/SE7705806L/en
Priority to FR7715589A priority patent/FR2352011A1/en
Publication of GB1520846A publication Critical patent/GB1520846A/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
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/80—Masked polyisocyanates
    • C08G18/8003—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen
    • C08G18/8006—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32
    • C08G18/8009—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32 with compounds of C08G18/3203
    • C08G18/8022—Masked polyisocyanates masked with compounds having at least two groups containing active hydrogen with compounds of C08G18/32 with compounds of C08G18/3203 with polyols having at least three hydroxy groups
    • C08G18/8029—Masked aromatic polyisocyanates
    • 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
    • C08G18/089—Reaction retarding agents
    • 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
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
    • C08G18/78—Nitrogen
    • C08G18/7806—Nitrogen containing -N-C=0 groups
    • C08G18/7818—Nitrogen containing -N-C=0 groups containing ureum or ureum derivative groups
    • C08G18/7837—Nitrogen containing -N-C=0 groups containing ureum or ureum derivative groups containing allophanate 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)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)

Abstract

1520846 Polyisocyanate compositions IMPERIAL CHEMICAL INDUSTRIES Ltd 7 April 1977 [21 May 1976] 21061/76 Heading C3R A polyisocyanate composition is manufactured by a process which comprises reacting at least 4 molar proportions of tolylene diisocyanate with 1 molar proportion of an oxypropylated triol of molecular weight 200 to 800 in the absence of an alkylating agent under reaction conditions such that further reaction, e.g. allophanate formation, takes place after the primary urethane formation at a temperature of 120‹ C. or above. Preferably 4 to 30 molar proportions of tolylene diisocyanate are used. The tolylene diisocyanate is preferably an 80 : 20 mixture of 2,4- and 2,6-tolylene diisocyanates. The preferred oxypropylated triol is oxypropylated glycerol. A stabilizing agent, preferably an acid chloride, may, be present during the reaction. The resulting polyisocyanate composition is generally a liquid and it may be blended with a mixture of methylene bridged polyphenyl polyisocyanates and/or tolylene diisocyanate and can be used in the manufacture of a polyurethane foam by reacting the polyisocyanate composition with a polymer having at least two isocyanate reactive end groups, especially a polyether polyol, under conditions such that a foam-forming gas is produced. Suitable polyether polyols are polyoxypropylene and poly(oxypropylene)(oxyethylene) polyols having from 2 to 4 hydroxyl groups and preferably have molecular weights of from 1000 to 10,000. The foam-forming reaction mixture may contain conventional additives, e.g. blowing agents, catalysts, surfactants, cross-linkers orchain-lengtheners, flame-retardants and fillers. In a typical Example a liquid polyisocyanate composition prepared by reacting 10 moles of an 80/20, 2,4/2,6-tolylene diisocynate mixture with 1 mole of an oxypropylated glycerol of M.Wt. 310 in the presence of benzoyl chloride is diluted with 80/20, 2,4/2,6-tolylene diisocyanate and then blended with crude methylene bridged polyphenyl polyisocyanate and is then used to prepare a flexible polyurethane foam moulding from a formulation which additionally comprises an ethylene oxide tipped oxypropylated glycerol (M.Wt. 5300), water, triethylene diamine, dimethylamino ethanol, oxyethylated octylphenol and a polydimethyl siloxane.
GB21061/76A 1976-05-21 1976-05-21 Isocyanates Expired GB1520846A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB21061/76A GB1520846A (en) 1976-05-21 1976-05-21 Isocyanates
DE19772718512 DE2718512A1 (en) 1976-05-21 1977-04-26 METHOD FOR PREPARING POLYISOCYANATE COMPOSITIONS
IT23060/77A IT1125749B (en) 1976-05-21 1977-04-29 PROCESS FOR THE PRODUCTION OF LIQUID POLYISOCYANATES BY REACTING TOLYL N DIISOCYANATE WITH AN OXYPROPILATED TRIOL
NL7704842A NL7704842A (en) 1976-05-21 1977-05-03 PROCESS FOR THE PREPARATION OF POLYISOCYANATE COMPOSITIONS.
BE177624A BE854695A (en) 1976-05-21 1977-05-16 ISOCYANATES
SE7705806A SE7705806L (en) 1976-05-21 1977-05-17 POLYISOCYANATE COMPOSITIONS AND THEIR PREPARATION
FR7715589A FR2352011A1 (en) 1976-05-21 1977-05-20 ISOCYANATES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21061/76A GB1520846A (en) 1976-05-21 1976-05-21 Isocyanates

Publications (1)

Publication Number Publication Date
GB1520846A true GB1520846A (en) 1978-08-09

Family

ID=10156545

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21061/76A Expired GB1520846A (en) 1976-05-21 1976-05-21 Isocyanates

Country Status (7)

Country Link
BE (1) BE854695A (en)
DE (1) DE2718512A1 (en)
FR (1) FR2352011A1 (en)
GB (1) GB1520846A (en)
IT (1) IT1125749B (en)
NL (1) NL7704842A (en)
SE (1) SE7705806L (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0915111A1 (en) * 1997-11-10 1999-05-12 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
US6028158A (en) * 1997-12-31 2000-02-22 Bayer Corporation Freeze-stable allophanate-modified toluene diisocyanate trimers
US6127308A (en) * 1997-12-31 2000-10-03 Bayer Corporation Trimer catalyst system for aliphatic and aromatic isocyanates
US6271279B1 (en) 2000-07-10 2001-08-07 Bayer Corporation High resilient flexible urethane foam and flexible molded foams based on allophanate modified isocyanates

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2513642B1 (en) * 1981-09-25 1985-08-09 Ugine Kuhlmann MODIFIED CRUDE TOLUENE DIISOCYANATE FOR IMPROVED HIGH RESILIENCE POLYURETHANE FOAMS
US4866103A (en) * 1987-10-16 1989-09-12 Ici Americas Inc. Polyisocyanate compositions
DE4328076A1 (en) * 1993-08-20 1995-02-23 Bayer Ag Process for the production of soft foams containing urethane groups
KR101954346B1 (en) * 2017-12-27 2019-03-05 에스케이씨 주식회사 Isocyanate composition with improved stability and reactivity, and optical lens using the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0915111A1 (en) * 1997-11-10 1999-05-12 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
US6028158A (en) * 1997-12-31 2000-02-22 Bayer Corporation Freeze-stable allophanate-modified toluene diisocyanate trimers
US6063891A (en) * 1997-12-31 2000-05-16 Bayer Corporation Freeze stable allophanate-modified toluene diisocyanate trimers
US6127308A (en) * 1997-12-31 2000-10-03 Bayer Corporation Trimer catalyst system for aliphatic and aromatic isocyanates
US6271279B1 (en) 2000-07-10 2001-08-07 Bayer Corporation High resilient flexible urethane foam and flexible molded foams based on allophanate modified isocyanates

Also Published As

Publication number Publication date
FR2352011A1 (en) 1977-12-16
BE854695A (en) 1977-11-16
NL7704842A (en) 1977-11-23
SE7705806L (en) 1977-11-22
DE2718512A1 (en) 1977-12-08
IT1125749B (en) 1986-05-14

Similar Documents

Publication Publication Date Title
EP0712876B1 (en) Isocyanate composition and process for making flexible foams therefrom
US5521225A (en) Process for preparing flexible foams
US3821130A (en) Air frothed polyurethane foams
US6617369B2 (en) Process for making visco-elastic foams, polyols blend and reaction system useful therefor
US3405077A (en) Process for making soft polyurethane foams and product
CA1165929A (en) Stable emulsions of polyols and crosslinkers for polyurethanes
US4144386A (en) Process for the production of flexible polyurethane foams
AU621313B2 (en) Polyisocyanate compositions
KR20010022144A (en) Improved Water Blown Polyurethane Soling Systems
EP0393903A2 (en) Polyisocyanate compositions and their use in the manufacture of polymeric foams
GB1422056A (en) Polyurethane foams
US4410641A (en) Polysiocyanurate-polyurethane foams
US4497913A (en) Process for preparing a stable dispersion of a polymer in a polyol and its use in the production of high resilience polyurethane foam
US3931066A (en) High resilience polyurethane foam
US3583926A (en) Stable polyol compositions and use thereof in preparation of polyurethane foam
GB1520846A (en) Isocyanates
CA1158797A (en) Morpholine derivatives and use as polyurethane catalyst
GB1241080A (en) Polyurethane compositions
JPH02163112A (en) Manufacture of low-density flexible
EP0398304B1 (en) Flexible polyurethane foams and process for preparing them
JPH0328447B2 (en)
US3331791A (en) Polyurethane foams produced from monoamine triols
EP0480090B1 (en) Polyisocyanate compositions and their use in the preparation of flexible polyurethane foams
US3823096A (en) Modified flexible polyetherurethane foams
JPH0770270A (en) Production of rigid-polyurethane- or urethane-modified polyisocyanaurate foam

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee