GB773547A - Resol resins - Google Patents

Resol resins

Info

Publication number
GB773547A
GB773547A GB2624054A GB2624054A GB773547A GB 773547 A GB773547 A GB 773547A GB 2624054 A GB2624054 A GB 2624054A GB 2624054 A GB2624054 A GB 2624054A GB 773547 A GB773547 A GB 773547A
Authority
GB
United Kingdom
Prior art keywords
parts
phenol
formaldehyde
alkali
oxides
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
GB2624054A
Inventor
Donald Alexander Fraser
Richard William Hall
Alaric Louis 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 GB2624054A priority Critical patent/GB773547A/en
Publication of GB773547A publication Critical patent/GB773547A/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
    • C08G8/28—Chemically modified polycondensates
    • 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

Abstract

Resol resins are made by condensing a molar excess of a phenolic material with formaldehyde in the presence of an oxide or hydroxide of a divalent electropositive metal at a pH of from 4 to 7 to produce a non-heat-hardenable novolak, reacting this resin in the liquid phase with formaldehyde in the presence of alkali at a pH above 7 and stopping the condensation before the resol becomes insoluble. The molar ratio of condensed formaldehyde to phenol in the product is greater than 1 : 1. The phenolic material comprises phenol, meta-cresol, metaethyl phenol and mixtures thereof amongst themselves or with other phenolic compounds. The oxides or hydroxides exemplified are those of barium, strontium, calcium, magnesium, manganese, zinc, cadmium, coblatous cobalt, lead, iron, chromium, tin and nickel. Alkali condensing agents specified for the second stage comprise in addition to the oxides and hydroxides enumerated above, alkali metal carbonates, ammonia and organic bases. In the example, 3000 parts of phenol, 658 parts of 36.35 per cent aqueous formaldehyde and 30 parts of Cd(OH)2 were refluxed and the water allowed to distil off to a temperature of 160 DEG C., the phenol then being removed by vacuum distillation. 265.7 parts of the resultant novolak were mixed with 285.5 parts of water and 62.8 parts of NaOH, 167.5 parts of formalin added to the solution which was heated to 95 DEG C. The product was suitable as an adhesive for plywood.
GB2624054A 1954-09-10 1954-09-10 Resol resins Expired GB773547A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2624054A GB773547A (en) 1954-09-10 1954-09-10 Resol resins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2624054A GB773547A (en) 1954-09-10 1954-09-10 Resol resins

Publications (1)

Publication Number Publication Date
GB773547A true GB773547A (en) 1957-04-24

Family

ID=10240531

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2624054A Expired GB773547A (en) 1954-09-10 1954-09-10 Resol resins

Country Status (1)

Country Link
GB (1) GB773547A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353577A1 (en) * 1976-06-02 1977-12-30 Basf Ag Phenol-formaldehyde adhesive for composite panels, e.g. plywood - obtd. by stagewise addn. of formaldehyde and alkali
WO2012112043A1 (en) * 2011-02-16 2012-08-23 Trespa International B.V. A method for reducing the formaldehyde content of a resinous starting material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353577A1 (en) * 1976-06-02 1977-12-30 Basf Ag Phenol-formaldehyde adhesive for composite panels, e.g. plywood - obtd. by stagewise addn. of formaldehyde and alkali
WO2012112043A1 (en) * 2011-02-16 2012-08-23 Trespa International B.V. A method for reducing the formaldehyde content of a resinous starting material

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