GB192941A - An improved method of manufacturing formaldehyde condensation products of phenols - Google Patents

An improved method of manufacturing formaldehyde condensation products of phenols

Info

Publication number
GB192941A
GB192941A GB602422A GB602422A GB192941A GB 192941 A GB192941 A GB 192941A GB 602422 A GB602422 A GB 602422A GB 602422 A GB602422 A GB 602422A GB 192941 A GB192941 A GB 192941A
Authority
GB
United Kingdom
Prior art keywords
phenols
improved method
condensation products
formaldehyde condensation
formaldehyde
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
GB602422A
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.)
RICHARD ATTWATER
Original Assignee
RICHARD ATTWATER
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 RICHARD ATTWATER filed Critical RICHARD ATTWATER
Priority to GB602422A priority Critical patent/GB192941A/en
Publication of GB192941A publication Critical patent/GB192941A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

Phenol or cresol is condensed with formaldehyde using sodium thiosulphate, or other neutral salt of thiosulphuric acid, as catalyst, thus effecting an economy in formaldehyde, light-coloured products being obtained. In an example, sulphur-free cresylic acid is condensed in presence of sodium thiosulphate with formaldehyde which is added in four equal quantities at specified intervals. The product is separated from the aqueous layer. Specification 28009/07 is referred to.
GB602422A 1922-03-01 1922-03-01 An improved method of manufacturing formaldehyde condensation products of phenols Expired GB192941A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB602422A GB192941A (en) 1922-03-01 1922-03-01 An improved method of manufacturing formaldehyde condensation products of phenols

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB602422A GB192941A (en) 1922-03-01 1922-03-01 An improved method of manufacturing formaldehyde condensation products of phenols

Publications (1)

Publication Number Publication Date
GB192941A true GB192941A (en) 1923-02-15

Family

ID=9807017

Family Applications (1)

Application Number Title Priority Date Filing Date
GB602422A Expired GB192941A (en) 1922-03-01 1922-03-01 An improved method of manufacturing formaldehyde condensation products of phenols

Country Status (1)

Country Link
GB (1) GB192941A (en)

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