GB980435A - Improvements in the production of polyurethane elastomers - Google Patents

Improvements in the production of polyurethane elastomers

Info

Publication number
GB980435A
GB980435A GB3588261A GB3588261A GB980435A GB 980435 A GB980435 A GB 980435A GB 3588261 A GB3588261 A GB 3588261A GB 3588261 A GB3588261 A GB 3588261A GB 980435 A GB980435 A GB 980435A
Authority
GB
United Kingdom
Prior art keywords
diol
reaction product
diisocyanate
chlorobenzene
polymeric
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
GB3588261A
Inventor
John William Watson
Cedric Hartle
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.)
Dunlop Rubber Co Ltd
Original Assignee
Dunlop Rubber Co 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 Dunlop Rubber Co Ltd filed Critical Dunlop Rubber Co Ltd
Priority to GB3588261A priority Critical patent/GB980435A/en
Priority to FR877215A priority patent/FR1304573A/en
Priority to DE1961D0037376 priority patent/DE1295832B/en
Publication of GB980435A publication Critical patent/GB980435A/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
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
    • C08G18/758—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing two or more cycloaliphatic rings
    • 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
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/73—Polyisocyanates or polyisothiocyanates acyclic

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 for producing a thermoplastic polyurethane elastomer comprises mixing under anydrous or substantially anhydrous conditions a reaction product of a polymeric diol with an aliphatic diisocyanate, said reaction product containing two terminal or substantially terminal groups in the molecule, each group comprising an aliphatic radical containing an isocyanate substituent, with a diol and a catalyst to accelerate chain extension of the reaction product. Isothiocyanates, thioethers and thiols are included. The polymeric diol is preferably linear, with a molecular weight above 500, and can be a polyether, polyester or polyesteramide. Dicyclohexylmethane diisocyanate and hexamethylene diisocyanates are specified diisocyanates. Preferably 2 to 3 moles of diisocyanate per mole of polymeric diol is used. The diol for the chain-extension is preferably a di-primary aliphatic alcohol, though it may be secondary. Butane diol, glycol and trimethylene glycol are mentioned. The molar ratio of aliphatic diisocyanate to chainextending diol can be in the range 1:0.9(n - 1)/n to 1:1.1(n - 1)/n where n is the molar ratio of diisocyanate to polymeric diol. Suitable catalysts are those referred to in Specification 976,902. The reaction product of the polymeric diol can be dissolved in or prepared in solvents, e.g. acetone, methyl isopropenyl ketone and chlorobenzene. In examples (1) a mixture of a polytetramethylene glycol/dicyclohexyl methane diisocyanate reaction product, butane-1,4-diol and dibutyl tin dilaurate is formed into thin layers and heated at 100 DEG C. to give a film; (2) a reaction product of neopentyl glycol-sebacic acid polyester and dicyclohexylmethane diisocyanate is heated with 1,4 - butane diol, dibutyl - tin - dilaurate and chlorobenzene. The chlorobenzene is then removed under vacuum to leave a rubbery thermoplastic elastomer, soluble in methylene chloride, acetone and methyl ethyl ketone.
GB3588261A 1960-11-03 1960-11-03 Improvements in the production of polyurethane elastomers Expired GB980435A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB3588261A GB980435A (en) 1960-11-03 1960-11-03 Improvements in the production of polyurethane elastomers
FR877215A FR1304573A (en) 1960-11-03 1961-10-27 New polyurethanes and their manufacture
DE1961D0037376 DE1295832B (en) 1960-11-03 1961-11-03 Process for the production of a thermoplastic polyurethane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3588261A GB980435A (en) 1960-11-03 1960-11-03 Improvements in the production of polyurethane elastomers

Publications (1)

Publication Number Publication Date
GB980435A true GB980435A (en) 1965-01-13

Family

ID=10382577

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3588261A Expired GB980435A (en) 1960-11-03 1960-11-03 Improvements in the production of polyurethane elastomers

Country Status (3)

Country Link
DE (1) DE1295832B (en)
FR (1) FR1304573A (en)
GB (1) GB980435A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4447590A (en) * 1981-10-30 1984-05-08 Thermo Electron Corporation Extrudable polyurethane for prosthetic devices prepared from a diisocyanate, a polytetramethylene ether polyol and 1,4 butane diol
US4523005A (en) * 1981-10-30 1985-06-11 Thermedics, Inc. Extrudable polyurethane for prosthetic devices prepared from a diisocyanate, a polytetramethylene ether polyol, and 1,4-butane diol

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE831772C (en) * 1952-11-18 1952-02-18 Bayer Ag Process for the production of high molecular weight crosslinked plastics

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4447590A (en) * 1981-10-30 1984-05-08 Thermo Electron Corporation Extrudable polyurethane for prosthetic devices prepared from a diisocyanate, a polytetramethylene ether polyol and 1,4 butane diol
US4523005A (en) * 1981-10-30 1985-06-11 Thermedics, Inc. Extrudable polyurethane for prosthetic devices prepared from a diisocyanate, a polytetramethylene ether polyol, and 1,4-butane diol

Also Published As

Publication number Publication date
DE1295832B (en) 1969-05-22
FR1304573A (en) 1962-09-21

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