GB857155A - Method of producing highly condensed melamine-formaldehyde resins - Google Patents

Method of producing highly condensed melamine-formaldehyde resins

Info

Publication number
GB857155A
GB857155A GB3570857A GB3570857A GB857155A GB 857155 A GB857155 A GB 857155A GB 3570857 A GB3570857 A GB 3570857A GB 3570857 A GB3570857 A GB 3570857A GB 857155 A GB857155 A GB 857155A
Authority
GB
United Kingdom
Prior art keywords
melamine
formaldehyde resins
producing highly
highly condensed
condensed melamine
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
GB3570857A
Inventor
Ernst Doehlemann
Horst Michaud
Herbert Rostock
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.)
Evonik Operations GmbH
Original Assignee
SKW Trostberg AG
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 SKW Trostberg AG filed Critical SKW Trostberg AG
Priority to GB3570857A priority Critical patent/GB857155A/en
Publication of GB857155A publication Critical patent/GB857155A/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
    • C08G12/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08G12/30—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with substituted triazines
    • C08G12/32—Melamines

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)

Abstract

Melamine - formaldehyde resins capable of producing solution of high stability and clarity are prepared by heating an aqueous formaldehyde solution, having a pH within the range 8,5 to 9, to a temperature of 75 to 90 DEG C, introducing pure melamine and condensing at 88 to 92 DEG C until a water compatibility within the range 1 : 1,5 to 1 : 0,6 is obtained, adjusting the pH to 10,3 to 10,6 and finally drying. The mol ratio of melamine to formaldehyde is from 1:2 to 1: 4,5. For the purpose of drying, an atomizer drier may be used.
GB3570857A 1957-11-15 1957-11-15 Method of producing highly condensed melamine-formaldehyde resins Expired GB857155A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3570857A GB857155A (en) 1957-11-15 1957-11-15 Method of producing highly condensed melamine-formaldehyde resins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3570857A GB857155A (en) 1957-11-15 1957-11-15 Method of producing highly condensed melamine-formaldehyde resins

Publications (1)

Publication Number Publication Date
GB857155A true GB857155A (en) 1960-12-29

Family

ID=10380696

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3570857A Expired GB857155A (en) 1957-11-15 1957-11-15 Method of producing highly condensed melamine-formaldehyde resins

Country Status (1)

Country Link
GB (1) GB857155A (en)

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