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GB1000566A - Improvements in or relating to the manufacture of polyurethane foams - Google Patents

Improvements in or relating to the manufacture of polyurethane foams

Info

Publication number
GB1000566A
GB1000566A GB1491763A GB1491763A GB1000566A GB 1000566 A GB1000566 A GB 1000566A GB 1491763 A GB1491763 A GB 1491763A GB 1491763 A GB1491763 A GB 1491763A GB 1000566 A GB1000566 A GB 1000566A
Authority
GB
United Kingdom
Prior art keywords
mould
cellular polyurethane
volume
hydroxyl
allowed
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
GB1491763A
Inventor
John Francis Wood
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 GB1491763A priority Critical patent/GB1000566A/en
Priority to BE646542A priority patent/BE646542A/xx
Priority to NL6404062A priority patent/NL6404062A/xx
Priority to SE470064A priority patent/SE301385B/xx
Priority to DK188064A priority patent/DK107579C/en
Priority to FR971206A priority patent/FR1388551A/en
Publication of GB1000566A publication Critical patent/GB1000566A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/02—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by the reacting monomers or modifying agents during the preparation or modification of macromolecules
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (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 the manufacture of cellular polyurethane materials from a reaction mixture comprising an organic polyisocyanate, a hydroxyl -group containing polymer and water as a gas generating agent, comprises introducing the reaction mixture into a mould, the volume of which is less than that of the cellular polyurethane which would be formed if free expansion were permitted, allowing the mixture to react and expand in order to fill and be substantially wholly contained by the mould, the excess gas being allowed to escape therefrom, the reaction mixture then being allowed to cure, thus forming a cellular polyurethane material within the mould. The volume of the mould is preferably from 2 to 80% of the volume of the cellular polyurethane which would be formed if free expansion were permitted. Hydroxyl-group containing substances used in the examples include a glycerol/propylene oxide condensate and pentaerythritol modified polydiethylene adipate having a hydroxyl content of 2%.ALSO:A process for producing a composite article comprises lining, wholly or partially, a mould with a textile, plastics or other material to which the reaction mixture, which is to produce cellular polyurethane material, adheres. The reaction mixture which is an organic polyisocyanate, a hydroxyl-group containing polymer and water as a gas generating agent is introduced into the mould, the volume of which is less than that of the cellular polyurethane which would be formed if free expansion were permitted, allowed to react and expand in order to fill and be substantially wholly contained by the mould, the excess gas being allowed to escape therefrom and is then allowed to cure, thus forming a cellular polyurethane material within the mould. The volume of the mould is preferably from 2-80% of the volume of the cellular polyurethane which would be formed if free expansion were permitted. Hydroxyl-group containing substances used in the examples include a glycerol/propylene oxide condensate and pentaerythritol modified polydiethylene adipate having a hydroxyl content of 2%. Lining material specified is duckcloth.
GB1491763A 1963-04-16 1963-04-16 Improvements in or relating to the manufacture of polyurethane foams Expired GB1000566A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB1491763A GB1000566A (en) 1963-04-16 1963-04-16 Improvements in or relating to the manufacture of polyurethane foams
BE646542A BE646542A (en) 1963-04-16 1964-04-14
NL6404062A NL6404062A (en) 1963-04-16 1964-04-15
SE470064A SE301385B (en) 1963-04-16 1964-04-16
DK188064A DK107579C (en) 1963-04-16 1964-04-16 Process for the production of cellular polyurethane fabrics with high density.
FR971206A FR1388551A (en) 1963-04-16 1964-04-16 Advanced process for manufacturing cellular polyurethanes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1491763A GB1000566A (en) 1963-04-16 1963-04-16 Improvements in or relating to the manufacture of polyurethane foams

Publications (1)

Publication Number Publication Date
GB1000566A true GB1000566A (en) 1965-08-04

Family

ID=10049840

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1491763A Expired GB1000566A (en) 1963-04-16 1963-04-16 Improvements in or relating to the manufacture of polyurethane foams

Country Status (5)

Country Link
BE (1) BE646542A (en)
DK (1) DK107579C (en)
GB (1) GB1000566A (en)
NL (1) NL6404062A (en)
SE (1) SE301385B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4264544A (en) * 1973-10-02 1981-04-28 The Unisource Corporation Method of molding a rigid integral skin foamed resin product in a mold having a vented lid

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9100707D0 (en) * 1991-01-12 1991-02-27 Dow Corning Sa Silicone foams of improved fire resistance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4264544A (en) * 1973-10-02 1981-04-28 The Unisource Corporation Method of molding a rigid integral skin foamed resin product in a mold having a vented lid

Also Published As

Publication number Publication date
BE646542A (en) 1964-10-14
NL6404062A (en) 1964-10-19
DK107579C (en) 1967-06-12
SE301385B (en) 1968-06-04

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