GB722926A - Improvements in or relating to methods of manufacturing adhesives - Google Patents

Improvements in or relating to methods of manufacturing adhesives

Info

Publication number
GB722926A
GB722926A GB11778/52A GB1177852A GB722926A GB 722926 A GB722926 A GB 722926A GB 11778/52 A GB11778/52 A GB 11778/52A GB 1177852 A GB1177852 A GB 1177852A GB 722926 A GB722926 A GB 722926A
Authority
GB
United Kingdom
Prior art keywords
solutions
added
gms
phenol
ammonium chloride
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
GB11778/52A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB722926A publication Critical patent/GB722926A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
    • C09J161/34—Condensation polymers of aldehydes or ketones with monomers covered by at least two of the groups C09J161/04, C09J161/18 and C09J161/20

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Aqueous solutions of heat-hardenable urea-formaldehyde condensates also contain a polyhydric phenol and a primary aromatic amine. They are useful as adhesives and have an increased shelf life without an unduly prolonged hardening time. Suitable polyhydric phenols are resorcinol and phloroglucinol. Suitable amines are aniline and toluidine. Ammonium chloride may be added to reduce the hardening time of layers of the dried solutions. At least 5 gms. of polyhydric phenol and 0.05-0.07 mol. of primary amine are preferably added/100 gms. of urea-formaldehyde condensate. Examples compare the shelf lives of solutions with and without added ammonium chloride and containing aromatic amine but no phenol. They also describe experimental manufacture and testing of plywood employing solutions according to the invention, and comparing them with other solutions.
GB11778/52A 1951-05-12 1952-05-09 Improvements in or relating to methods of manufacturing adhesives Expired GB722926A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL722926X 1951-05-12

Publications (1)

Publication Number Publication Date
GB722926A true GB722926A (en) 1955-02-02

Family

ID=35659007

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11778/52A Expired GB722926A (en) 1951-05-12 1952-05-09 Improvements in or relating to methods of manufacturing adhesives

Country Status (2)

Country Link
ES (1) ES203438A1 (en)
GB (1) GB722926A (en)

Also Published As

Publication number Publication date
ES203438A1 (en) 1952-10-01

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