GB763244A - Improvements in or relating to water-soluble alkylated methylol melamines - Google Patents

Improvements in or relating to water-soluble alkylated methylol melamines

Info

Publication number
GB763244A
GB763244A GB21724/53A GB2172453A GB763244A GB 763244 A GB763244 A GB 763244A GB 21724/53 A GB21724/53 A GB 21724/53A GB 2172453 A GB2172453 A GB 2172453A GB 763244 A GB763244 A GB 763244A
Authority
GB
United Kingdom
Prior art keywords
acid
water
formaldehyde
alcohol
mol
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
GB21724/53A
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.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
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 American Cyanamid Co filed Critical American Cyanamid Co
Publication of GB763244A publication Critical patent/GB763244A/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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
    • C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
    • C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
    • C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
    • C07D251/40—Nitrogen atoms
    • C07D251/54—Three nitrogen atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Phenolic Resins Or Amino Resins (AREA)

Abstract

Alkylated water-soluble melamine-formaldehyde condensates are made by (a) reacting melamine and formaldehyde (or a formaldehyde generator) in a mixture of water and methanol or ethanol at a pH of 7-12, the mol. ratio of melamine to formaldehyde being from 1 : 1.5 to 1 : 6, the mol. ratio of alcohol to water being from 5 : 1 to 0.5 : 1 and the mol. ratio of alcohol to formaldehyde being from 0.4 : 1 to 5 : 1; and (b) heating the resulting mixture at a pH of 2-6.9. After step (a) and before step (b), further alcohol may be added to bring the mol. ratio of alcohol to water from 1 : 1 to 10 : 1. Step (a) may be effected in presence of sodium carbonate, sodium acid phosphate, sodium hydroxide or triethanolamine. Step (b) may be effected in presence of oxalic acid, hydrochloric acid, formic acid, stannic chloride, phosphoric acid, pyrophosphoric acid, nitric acid, phthalic acid or maleic acid. At the end of step (b) th resulting syrup is made alkaline and may be concentrated to remove water and unreacted alcohol.
GB21724/53A 1952-08-14 1953-08-06 Improvements in or relating to water-soluble alkylated methylol melamines Expired GB763244A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US763244XA 1952-08-14 1952-08-14

Publications (1)

Publication Number Publication Date
GB763244A true GB763244A (en) 1956-12-12

Family

ID=22131282

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21724/53A Expired GB763244A (en) 1952-08-14 1953-08-06 Improvements in or relating to water-soluble alkylated methylol melamines

Country Status (1)

Country Link
GB (1) GB763244A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059027A (en) * 1958-11-18 1962-10-16 Rohm & Haas Process of producing alkylated polymethylol aminoplast condensates

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3059027A (en) * 1958-11-18 1962-10-16 Rohm & Haas Process of producing alkylated polymethylol aminoplast condensates

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