GB545409A - Improvements in or relating to urea formaldehyde adhesives - Google Patents

Improvements in or relating to urea formaldehyde adhesives

Info

Publication number
GB545409A
GB545409A GB284940A GB284940A GB545409A GB 545409 A GB545409 A GB 545409A GB 284940 A GB284940 A GB 284940A GB 284940 A GB284940 A GB 284940A GB 545409 A GB545409 A GB 545409A
Authority
GB
United Kingdom
Prior art keywords
mixture
refluxing
added
urea
salts
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
GB284940A
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.)
AERO RES Ltd
Original Assignee
AERO RES 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 AERO RES Ltd filed Critical AERO RES Ltd
Priority to GB284940A priority Critical patent/GB545409A/en
Publication of GB545409A publication Critical patent/GB545409A/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
    • C08G12/00—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08G12/02—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes
    • C08G12/04—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
    • C08G12/10—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with acyclic compounds having the moiety X=C(—N<)2 in which X is O, S or —N
    • C08G12/12—Ureas; Thioureas
    • 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
    • C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C09J161/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
    • C09J161/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

545,409. Urea-formaldehyde adhesives. AERO RESEARCH Ltd., and RAYNER, C. A. A. Feb. 14, 1940, No. 2849. [Class 2 (iii)] A method of producing adhesive condensation syrups by refluxing together, in slightly acid solution, a mixture of formaldehyde and urea, thio-urea or a mixture thereof, is characterized, by the addition to the mixture, prior to refluxing, of at least 2 per cent. by weight of a substantially neutral non-buffering ionizable salt, or salts, excluding alkaline earth chlorides. Specified added salts are the nitrate, sulphate, chloride, bromide or iodide of sodium or potassium, calcium nitrate and magnesium sulphate. A buffer solution is added to the mixture to maintain a constant pH value during refluxing. After refluxing, a stabilizing agent, such as sodium acetate, may be added, and the mixture evaporated until the desired viscosity is obtained. Starch may be added to the evaporated syrup.
GB284940A 1940-02-14 1940-02-14 Improvements in or relating to urea formaldehyde adhesives Expired GB545409A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB284940A GB545409A (en) 1940-02-14 1940-02-14 Improvements in or relating to urea formaldehyde adhesives

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB284940A GB545409A (en) 1940-02-14 1940-02-14 Improvements in or relating to urea formaldehyde adhesives

Publications (1)

Publication Number Publication Date
GB545409A true GB545409A (en) 1942-05-26

Family

ID=9747115

Family Applications (1)

Application Number Title Priority Date Filing Date
GB284940A Expired GB545409A (en) 1940-02-14 1940-02-14 Improvements in or relating to urea formaldehyde adhesives

Country Status (1)

Country Link
GB (1) GB545409A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421937A1 (en) * 1978-04-07 1979-11-02 Patentes Novedades Sa PROCESS FOR PREPARING UREE-FORMALDEHYDE GLUES CONTAINING AN INORGANIC SALT
CN102250572A (en) * 2011-06-17 2011-11-23 江苏赛奥生化有限公司 Preparation method of oxidized pueraria starch adhesive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2421937A1 (en) * 1978-04-07 1979-11-02 Patentes Novedades Sa PROCESS FOR PREPARING UREE-FORMALDEHYDE GLUES CONTAINING AN INORGANIC SALT
CN102250572A (en) * 2011-06-17 2011-11-23 江苏赛奥生化有限公司 Preparation method of oxidized pueraria starch adhesive

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