GB666250A - Process for the preparation of rapidly hardening castable phenol-formaldehyde resins and tension-free castings produced therefrom - Google Patents

Process for the preparation of rapidly hardening castable phenol-formaldehyde resins and tension-free castings produced therefrom

Info

Publication number
GB666250A
GB666250A GB2460/49A GB246049A GB666250A GB 666250 A GB666250 A GB 666250A GB 2460/49 A GB2460/49 A GB 2460/49A GB 246049 A GB246049 A GB 246049A GB 666250 A GB666250 A GB 666250A
Authority
GB
United Kingdom
Prior art keywords
phenol
tension
preparation
formaldehyde resins
produced therefrom
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
GB2460/49A
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.)
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Original Assignee
Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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 Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO filed Critical Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
Publication of GB666250A publication Critical patent/GB666250A/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
    • C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
    • C08G8/04—Condensation polymers of aldehydes or ketones with phenols only of aldehydes
    • C08G8/08—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ
    • C08G8/10—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ with phenol

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Mold Materials And Core Materials (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

Rapidly hardening castable resins are prepared by adding maleic anhydride alone or mixed with a polyvalent alcohol to an unmodified phenol-formaldehyde resin which has been precondensed in alkaline medium and then acidified. In examples: (1) phenol, formalin, ethanol and sodium hydroxide are heated, monochloroacetic acid and lactic acid added and water distilled off. Maleic anhydride is then added and the mixture moulded; (2) the resin of example (1) is completely dehydrated, a preheated mixture of glycerol and maleic anhydride added and the mixture moulded.
GB2460/49A 1948-03-25 1949-01-28 Process for the preparation of rapidly hardening castable phenol-formaldehyde resins and tension-free castings produced therefrom Expired GB666250A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL666250X 1948-03-25

Publications (1)

Publication Number Publication Date
GB666250A true GB666250A (en) 1952-02-06

Family

ID=19798754

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2460/49A Expired GB666250A (en) 1948-03-25 1949-01-28 Process for the preparation of rapidly hardening castable phenol-formaldehyde resins and tension-free castings produced therefrom

Country Status (1)

Country Link
GB (1) GB666250A (en)

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