GB834316A - Urea-formaldehyde condensates and adhesives produced therefrom - Google Patents

Urea-formaldehyde condensates and adhesives produced therefrom

Info

Publication number
GB834316A
GB834316A GB1808557A GB1808557A GB834316A GB 834316 A GB834316 A GB 834316A GB 1808557 A GB1808557 A GB 1808557A GB 1808557 A GB1808557 A GB 1808557A GB 834316 A GB834316 A GB 834316A
Authority
GB
United Kingdom
Prior art keywords
urea
formaldehyde
product
formaldehyde condensates
produced therefrom
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
GB1808557A
Inventor
Donald Arthur Hubbard
Harry Goddard
Anthony Morris Cottrel
Frank Bird
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 Schweiz AG
Ciba ARL Ltd
Original Assignee
Ciba AG
Ciba ARL 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 Ciba AG, Ciba ARL Ltd filed Critical Ciba AG
Priority to GB1808557A priority Critical patent/GB834316A/en
Publication of GB834316A publication Critical patent/GB834316A/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

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

Solid stable urea-formaldehyde condensates are prepared by mixing urea with 1.5-2.0 mole. equivalents of formaldehyde, in the form of an aqueous solution of the formaldehyde, at pH 6.5-8, heating the mixture at 80-100 DEG C. for 2-6 minutes, cooling, subjecting the product at pH 6.5-7.5 to vacuum distillation at 35-50 DEG C. until the solids content of the residue is about 55-70%, adjusting the pH of the residue to 7.0-8.5 and immediately cooling to form a solid product. The product is useful as an adhesive for which purposes it is preferably brought to about 100 DEG C. after which an acid catalyst, e.g. formic acid, or an acid-producing salt is added and the heating continued until the desired viscosity for adhesive purposes is achieved.
GB1808557A 1957-06-06 1957-06-06 Urea-formaldehyde condensates and adhesives produced therefrom Expired GB834316A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1808557A GB834316A (en) 1957-06-06 1957-06-06 Urea-formaldehyde condensates and adhesives produced therefrom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1808557A GB834316A (en) 1957-06-06 1957-06-06 Urea-formaldehyde condensates and adhesives produced therefrom

Publications (1)

Publication Number Publication Date
GB834316A true GB834316A (en) 1960-05-04

Family

ID=10106408

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1808557A Expired GB834316A (en) 1957-06-06 1957-06-06 Urea-formaldehyde condensates and adhesives produced therefrom

Country Status (1)

Country Link
GB (1) GB834316A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4564667A (en) * 1984-02-23 1986-01-14 Bip Chemicals Limited Urea-formaldehyde resin manufacture
CN103820063A (en) * 2014-03-18 2014-05-28 浙江红高梁木业有限公司 Improved urea-formaldehyde adhesive for block boards

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4564667A (en) * 1984-02-23 1986-01-14 Bip Chemicals Limited Urea-formaldehyde resin manufacture
CN103820063A (en) * 2014-03-18 2014-05-28 浙江红高梁木业有限公司 Improved urea-formaldehyde adhesive for block boards
CN103820063B (en) * 2014-03-18 2016-10-05 高金育 A kind of core-board urea-formaldehyde adhesive of improvement

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