FR2353577A1 - Phenol-formaldehyde adhesive for composite panels, e.g. plywood - obtd. by stagewise addn. of formaldehyde and alkali - Google Patents

Phenol-formaldehyde adhesive for composite panels, e.g. plywood - obtd. by stagewise addn. of formaldehyde and alkali

Info

Publication number
FR2353577A1
FR2353577A1 FR7716747A FR7716747A FR2353577A1 FR 2353577 A1 FR2353577 A1 FR 2353577A1 FR 7716747 A FR7716747 A FR 7716747A FR 7716747 A FR7716747 A FR 7716747A FR 2353577 A1 FR2353577 A1 FR 2353577A1
Authority
FR
France
Prior art keywords
formaldehyde
phenol
alkali
obtd
resin
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.)
Withdrawn
Application number
FR7716747A
Other languages
French (fr)
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Publication of FR2353577A1 publication Critical patent/FR2353577A1/en
Withdrawn legal-status Critical Current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)
  • Phenolic Resins Or Amino Resins (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

Mfr. of aq. solns. of phenol-formaldehyde resins in a basic medium, comprises reacting phenol and formaldehyde, in a molar ratio of 1:0.3-1:0.9, by firstly condensing in a molten form. Resin obtd. is then condensed, if necessary after addn. of water, with corresp. quantities of alkali and supplementary formaldehyde at a pH >7 to the desired viscosity. Alkaline soln. is added in >=2 stages, without exceeding 0.4 mole alkali per mole of phenol in the first stage, or in a continuous manner. Formaldehyde is introduced as paraformaldehyde. The phenol-formaldehyde mixt., if necessary under reduced press., is heated, and the reaction proceeds spontaneously. After the heat of reaction has abated the still liq. resin is dissolved in alkali and the mixt. heated, if necessary under reflux, until a clear soln. is obtd. Resins are used as glues for agglomerated panels, e.g., laminated plywood, their reactivity and stability to storage being little affected by the alkali content of the resin soln. They contain, per mole of phenol, 1.5-2.8 moles of formaldehyde and 0.6-1.6 moles alkali. For a viscosity of 150-600 mPas they have a dry residue of 35-48% by wt.
FR7716747A 1976-06-02 1977-06-01 Phenol-formaldehyde adhesive for composite panels, e.g. plywood - obtd. by stagewise addn. of formaldehyde and alkali Withdrawn FR2353577A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762624629 DE2624629A1 (en) 1976-06-02 1976-06-02 PROCESS FOR THE PRODUCTION OF HIGHLY REACTIVE PHENOL-FORMALDEHYDE GLUES

Publications (1)

Publication Number Publication Date
FR2353577A1 true FR2353577A1 (en) 1977-12-30

Family

ID=5979560

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7716747A Withdrawn FR2353577A1 (en) 1976-06-02 1977-06-01 Phenol-formaldehyde adhesive for composite panels, e.g. plywood - obtd. by stagewise addn. of formaldehyde and alkali

Country Status (4)

Country Link
BE (1) BE855291A (en)
DE (1) DE2624629A1 (en)
FR (1) FR2353577A1 (en)
IT (1) IT1075502B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996015169A1 (en) * 1993-05-12 1996-05-23 Commonwealth Scientific And Industrial Research Organisation Resins
CN105199063B (en) * 2015-10-28 2018-01-19 山东永汇新材料股份有限公司 The preparation method of paraformaldehyde novolak resin

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB773547A (en) * 1954-09-10 1957-04-24 Distillers Co Yeast Ltd Resol resins
DE1520399A1 (en) * 1963-06-27 1969-05-22 Monsanto Co Process for the production of phenol-formaldehyde condensation products in an aqueous alkaline medium
DE1301549B (en) * 1966-03-15 1969-08-21 Lottermoser Process for the production of phenol-formaldehyde novolaks
DE2215947B1 (en) * 1972-04-01 1973-09-27 Badische Anilin- & Soda-Fabrik Ag, 6700 Ludwigshafen Process for the production of phenolic resin glues
FR2350365A1 (en) * 1976-05-07 1977-12-02 Basf Ag Rapid hardening phenol-formaldehyde glues mfr. - giving a stability which is less alkali dependent

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB773547A (en) * 1954-09-10 1957-04-24 Distillers Co Yeast Ltd Resol resins
DE1520399A1 (en) * 1963-06-27 1969-05-22 Monsanto Co Process for the production of phenol-formaldehyde condensation products in an aqueous alkaline medium
DE1301549B (en) * 1966-03-15 1969-08-21 Lottermoser Process for the production of phenol-formaldehyde novolaks
DE2215947B1 (en) * 1972-04-01 1973-09-27 Badische Anilin- & Soda-Fabrik Ag, 6700 Ludwigshafen Process for the production of phenolic resin glues
FR2350365A1 (en) * 1976-05-07 1977-12-02 Basf Ag Rapid hardening phenol-formaldehyde glues mfr. - giving a stability which is less alkali dependent

Also Published As

Publication number Publication date
IT1075502B (en) 1985-04-22
DE2624629A1 (en) 1977-12-22
BE855291A (en) 1977-12-01

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Legal Events

Date Code Title Description
RE Withdrawal of published application