GB719539A - Improvements in or relating to polyurethane synthetic resinous products - Google Patents

Improvements in or relating to polyurethane synthetic resinous products

Info

Publication number
GB719539A
GB719539A GB5777/51A GB577751A GB719539A GB 719539 A GB719539 A GB 719539A GB 5777/51 A GB5777/51 A GB 5777/51A GB 577751 A GB577751 A GB 577751A GB 719539 A GB719539 A GB 719539A
Authority
GB
United Kingdom
Prior art keywords
mixture
molecular weight
weight proportion
alcohol
acid content
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
GB5777/51A
Inventor
Leslie Natham Phillips
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Publication of GB719539A publication Critical patent/GB719539A/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
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/4205—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups
    • C08G18/4208—Polycondensates having carboxylic or carbonic ester groups in the main chain containing cyclic groups containing aromatic 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
    • C08G18/28—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
    • C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic 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)

Abstract

A polyurethane is made by heating a mixture containing succinic and sebacic acids in a molecular weight proportion in the range 4:1 to 1:9 and a polyhydric alcohol to a temperature of 150 DEG to 220 DEG C. cooling the mixture and subsequently reacting it with a polyisocyanate. The initial mixture may also contain phthalic anhydride in a molecular weight proportion to the total acid content of the mixture of not more than 1:2 1/2 . The alcohol is advantageously used in excess, and in the case of a trihydric alcohol such as glycerol, is used in a molecular weight proportion to the total acid content of the mixture of 1:1 to 5:3. The isocyanate, e.g., m-tolulyene diisocyanate or a toluene solution thereof, is used in amount of 30 to 100 parts by weight per 100 parts of alkyd resin. The examples give proportions of reactants for making the alkyds from which are made polyurethanes, varying in properties from resin syrups to brittle foams. The foamed products may be used as a core layer of a sandwich structure for use in aircraft, and the non-foaming products may be used as varnishes and adhesives, e.g. for joining pieces of metal in making metal-honeycomb cores. Specification 553,733 is referred to.
GB5777/51A 1951-03-09 1951-03-09 Improvements in or relating to polyurethane synthetic resinous products Expired GB719539A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB316759X 1951-03-09

Publications (1)

Publication Number Publication Date
GB719539A true GB719539A (en) 1954-12-01

Family

ID=10326738

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5777/51A Expired GB719539A (en) 1951-03-09 1951-03-09 Improvements in or relating to polyurethane synthetic resinous products

Country Status (2)

Country Link
CH (1) CH316759A (en)
GB (1) GB719539A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1193245B (en) * 1961-07-18 1965-05-20 United Elastic Corp Process for the production of molded polyurethane bodies

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1193245B (en) * 1961-07-18 1965-05-20 United Elastic Corp Process for the production of molded polyurethane bodies

Also Published As

Publication number Publication date
CH316759A (en) 1956-10-31

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