GB1017092A - Improvements relating to the production of polyurethane foam - Google Patents

Improvements relating to the production of polyurethane foam

Info

Publication number
GB1017092A
GB1017092A GB33286/61A GB3328661A GB1017092A GB 1017092 A GB1017092 A GB 1017092A GB 33286/61 A GB33286/61 A GB 33286/61A GB 3328661 A GB3328661 A GB 3328661A GB 1017092 A GB1017092 A GB 1017092A
Authority
GB
United Kingdom
Prior art keywords
thio
cyanate
added
polyiso
organic
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
GB33286/61A
Inventor
John Fishbein
Paul Ivan Wilson
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 GB33286/61A priority Critical patent/GB1017092A/en
Publication of GB1017092A publication Critical patent/GB1017092A/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
    • C08G18/28—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
    • 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
    • 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
    • C08G2110/0083—Foam properties prepared using water as the sole blowing agent

Abstract

Polyurethane prepolymers are made by reacting an organic compound having at least two isocyanate reactive groups in the molecule with an organic polyiso(thio)cyanate without the application of external heat. The polyiso(thio)cyanate is added in at least two portions; the addition being interrupted when the equivalent of between 1 and 2 iso(thio)cyanate groups has been added for each isocyanate reactive group of the organic compound, one or more further quantities of polyiso(thio)cyanate being added after the viscosity of the mixture has exceeded a value of 10,000 C.P. at 25 DEG C. The total quantity of polyiso(thio)cyanate added being sufficient to give a free iso(thio)cyanate content not less than 8% by weight in the final reaction mixture. The organic compounds containing isocyanate-reactive groups which are specified are polyether polyols, polyesters, polyesteramides and glycerides of hydroxy acids. Polyurethane foams are made by mixing the prepolymer with a compound or compounds capable of inducing foaming and cross-linking and allowing the material to foam and set. Specified are water and catalysts such as tertiary amines and in the examples dimethylsiloxane polyoxyalkylene block copolymers are also added.
GB33286/61A 1961-10-16 1961-10-16 Improvements relating to the production of polyurethane foam Expired GB1017092A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB33286/61A GB1017092A (en) 1961-10-16 1961-10-16 Improvements relating to the production of polyurethane foam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB33286/61A GB1017092A (en) 1961-10-16 1961-10-16 Improvements relating to the production of polyurethane foam

Publications (1)

Publication Number Publication Date
GB1017092A true GB1017092A (en) 1966-01-12

Family

ID=10350956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33286/61A Expired GB1017092A (en) 1961-10-16 1961-10-16 Improvements relating to the production of polyurethane foam

Country Status (1)

Country Link
GB (1) GB1017092A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117624534A (en) * 2024-01-23 2024-03-01 苏州禾润昌新材料有限公司 Sound-insulation noise-reduction modified plastic and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117624534A (en) * 2024-01-23 2024-03-01 苏州禾润昌新材料有限公司 Sound-insulation noise-reduction modified plastic and preparation method thereof
CN117624534B (en) * 2024-01-23 2024-04-19 苏州禾润昌新材料有限公司 Sound-insulation noise-reduction modified plastic and preparation method thereof

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