GB738033A - Improvements in or relating to the preparation of melamine-formaldehyde syrups - Google Patents

Improvements in or relating to the preparation of melamine-formaldehyde syrups

Info

Publication number
GB738033A
GB738033A GB553153A GB553153A GB738033A GB 738033 A GB738033 A GB 738033A GB 553153 A GB553153 A GB 553153A GB 553153 A GB553153 A GB 553153A GB 738033 A GB738033 A GB 738033A
Authority
GB
United Kingdom
Prior art keywords
solution
water
aqueous
borax
added
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
GB553153A
Inventor
Francis Peter Grimshaw
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.)
BOC Group Ltd
Original Assignee
British Oxigen 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 British Oxigen Ltd filed Critical British Oxigen Ltd
Priority to GB553153A priority Critical patent/GB738033A/en
Priority to FR1093811D priority patent/FR1093811A/en
Publication of GB738033A publication Critical patent/GB738033A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/38—Boron-containing compounds

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

Stable aqueous or aqueous-alcoholic melamine formaldehyde syrups are prepared by adding to a solution, containing not more than 80 per cent of a condensate condensed to such a degree that it has a water tolerance between 1 : 1 and 1 : 4, an amount of 0.01-2 per cent of borax or its equivalent, e.g. boric acid or sodium metaborate and sodium hydroxide. The melamineformaldehyde condensate is preferably prepared by refluxing the ingredients at pH 8-9. The solution is then cooled to below 50 DEG C. and may then be diluted with water and/or ethyl alcohol to the desired solids content, or free formaldehyde and some water may first be removed by distillation in vacuo at below 50 DEG C. The borax may then be added as an aqueous solution. Alternatively the borax may be added after the condensation and prior to concentration in vacuo, or as a solution in the water, alcohol or aqueous alcohol used for adjusting the solids content of the syrup. Latent catalysts, fillers or plasticizers may be added to the syrup.
GB553153A 1953-02-27 1953-02-27 Improvements in or relating to the preparation of melamine-formaldehyde syrups Expired GB738033A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB553153A GB738033A (en) 1953-02-27 1953-02-27 Improvements in or relating to the preparation of melamine-formaldehyde syrups
FR1093811D FR1093811A (en) 1953-02-27 1954-02-23 Preparation of melamine-formaldehyde syrups

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB553153A GB738033A (en) 1953-02-27 1953-02-27 Improvements in or relating to the preparation of melamine-formaldehyde syrups

Publications (1)

Publication Number Publication Date
GB738033A true GB738033A (en) 1955-10-05

Family

ID=9797965

Family Applications (1)

Application Number Title Priority Date Filing Date
GB553153A Expired GB738033A (en) 1953-02-27 1953-02-27 Improvements in or relating to the preparation of melamine-formaldehyde syrups

Country Status (2)

Country Link
FR (1) FR1093811A (en)
GB (1) GB738033A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4284759A (en) 1978-05-31 1981-08-18 Imperial Chemical Industries Limited Preparation of aminoplast resin particles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4284759A (en) 1978-05-31 1981-08-18 Imperial Chemical Industries Limited Preparation of aminoplast resin particles

Also Published As

Publication number Publication date
FR1093811A (en) 1955-05-10

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