NL7214684A - Aminoplast wood adhesive - is weather resistant, requires less formaldehyde - Google Patents

Aminoplast wood adhesive - is weather resistant, requires less formaldehyde

Info

Publication number
NL7214684A
NL7214684A NL7214684A NL7214684A NL7214684A NL 7214684 A NL7214684 A NL 7214684A NL 7214684 A NL7214684 A NL 7214684A NL 7214684 A NL7214684 A NL 7214684A NL 7214684 A NL7214684 A NL 7214684A
Authority
NL
Netherlands
Prior art keywords
mole
weather resistant
aminoplast
requires less
moles
Prior art date
Application number
NL7214684A
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
Priority claimed from DE2020481A external-priority patent/DE2020481C3/en
Priority claimed from DE2043440A external-priority patent/DE2043440C3/en
Priority claimed from DE2154570A external-priority patent/DE2154570A1/en
Application filed filed Critical
Publication of NL7214684A publication Critical patent/NL7214684A/en

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
    • C08G14/00—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00
    • C08G14/02—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes
    • C08G14/04—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols
    • C08G14/06—Condensation polymers of aldehydes or ketones with two or more other monomers covered by at least two of the groups C08G8/00 - C08G12/00 of aldehydes with phenols and monomers containing hydrogen attached to nitrogen
    • C08G14/08—Ureas; Thioureas

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

Prepn. of weather resistant wood glue by (a) condensing 1 mole of a mixt. of 0.15-1 mole melamine and 0.85-0 mole urea, with 1.5-2.5 moles HCHO, in aq. soln. (to reach a compatibility with water of 0.5-10), (b) reacting the condensate with =0.5 mole formaldehyde, =0.5 moles melamine, and 0.05-0.2 moles phenol at pH 7.5-10 and temp. 45-100 degrees C until the viscosity (at 20 degrees C for 63% solids content) reaches 300-2000 cps, as in parent patent, except that pure urea and less HCHO (1.4-1.8 mole per mole urea) is used.
NL7214684A 1970-04-27 1972-10-30 Aminoplast wood adhesive - is weather resistant, requires less formaldehyde NL7214684A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2020481A DE2020481C3 (en) 1970-04-27 1970-04-27 Process for the production of an aqueous, aminoplastic wood glue with a solids content of 40 to 70%
DE2043440A DE2043440C3 (en) 1970-09-02 1970-09-02 Use of an aminoplastic wood glue as cold-hardening wood glue
DE2154570A DE2154570A1 (en) 1971-11-03 1971-11-03 WOOD GLUE

Publications (1)

Publication Number Publication Date
NL7214684A true NL7214684A (en) 1973-05-07

Family

ID=34221944

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7214684A NL7214684A (en) 1970-04-27 1972-10-30 Aminoplast wood adhesive - is weather resistant, requires less formaldehyde

Country Status (1)

Country Link
NL (1) NL7214684A (en)

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