GB773510A - Resol resins - Google Patents

Resol resins

Info

Publication number
GB773510A
GB773510A GB2623954A GB2623954A GB773510A GB 773510 A GB773510 A GB 773510A GB 2623954 A GB2623954 A GB 2623954A GB 2623954 A GB2623954 A GB 2623954A GB 773510 A GB773510 A GB 773510A
Authority
GB
United Kingdom
Prior art keywords
excess
formalin
phenol
formaldehyde
condensed
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
GB2623954A
Inventor
Donald Alexander Fraser
Richard William Hall
Alaric Louis Jeffrey Raum
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.)
Distillers Co Yeast Ltd
Distillers Co Ltd
Original Assignee
Distillers Co Yeast Ltd
Distillers 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 Distillers Co Yeast Ltd, Distillers Co Ltd filed Critical Distillers Co Yeast Ltd
Priority to GB2623954A priority Critical patent/GB773510A/en
Publication of GB773510A publication Critical patent/GB773510A/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Phenolic Resins Or Amino Resins (AREA)

Abstract

A resol resin is made by condensing a molar excess of phenolic material with formaldehyde in the presence of a salt of a divalent electropositive metal with an organic acid, said salt being at least partially soluble in the reaction mixture, at a pH of from 4 to 7 to produce a non-heat-hardenable novolak resin which is reacted with formaldehyde in the liquid phase, in the presence of alkali at a pH greater than 7, and stopping the condensation before the resol resin becomes insoluble. The molar ratio of condensed formaldehyde to phenolic material in the final produce exceeds 1 : 1. The phenolic material comprises phenol, meta-cresol, metaethyl phenol and mixtures thereof with or without other phenolic compounds. Specified metal salts comprise the benzoates, formates, acetates and lactates of barium, strontium, calcium, manganese, magnesium, zinc, cadmium, cobaltous cobalt and lead. Specified alkalies are the alkali metal hydroxides and carbonates, alkaline earth metal oxides and hydroxides, ammonia and organic bases. In the examples: (1) and (2) excess of phenol is refluxed with formalin in presence of zinc acetate, excess phenol being distilled off, the resultant novolak being condensed with formalin in the presence of sodium hydroxide; (3) excess of mixed cresols is refluxed with formalin and zinc acetate, excess cresol being distilled off and the resultant novolak condensed with formalin in the presence of ammonia. The products were suitable as plywood adhesives and in the preparation of paper laminated boards. Specification 757,392 is referred to.
GB2623954A 1954-09-10 1954-09-10 Resol resins Expired GB773510A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2623954A GB773510A (en) 1954-09-10 1954-09-10 Resol resins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2623954A GB773510A (en) 1954-09-10 1954-09-10 Resol resins

Publications (1)

Publication Number Publication Date
GB773510A true GB773510A (en) 1957-04-24

Family

ID=10240513

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2623954A Expired GB773510A (en) 1954-09-10 1954-09-10 Resol resins

Country Status (1)

Country Link
GB (1) GB773510A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2350365A1 (en) * 1976-05-07 1977-12-02 Basf Ag Rapid hardening phenol-formaldehyde glues mfr. - giving a stability which is less alkali dependent
US4668759A (en) * 1985-07-31 1987-05-26 Acme Resin Corporation Phenolic resin binders for foundry and refractory uses

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2350365A1 (en) * 1976-05-07 1977-12-02 Basf Ag Rapid hardening phenol-formaldehyde glues mfr. - giving a stability which is less alkali dependent
US4668759A (en) * 1985-07-31 1987-05-26 Acme Resin Corporation Phenolic resin binders for foundry and refractory uses
US4740535A (en) * 1985-07-31 1988-04-26 Acme Resin Corporation Phenolic resin binders for foundry and refractory uses

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