GB626876A - Improvements in or relating to the production of dispersions of synthetic resins - Google Patents

Improvements in or relating to the production of dispersions of synthetic resins

Info

Publication number
GB626876A
GB626876A GB2871446A GB2871446A GB626876A GB 626876 A GB626876 A GB 626876A GB 2871446 A GB2871446 A GB 2871446A GB 2871446 A GB2871446 A GB 2871446A GB 626876 A GB626876 A GB 626876A
Authority
GB
United Kingdom
Prior art keywords
resin
water
dispersed
soluble
lactic acid
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
GB2871446A
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.)
British Cellophane Ltd
Original Assignee
British Cellophane 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 Cellophane Ltd filed Critical British Cellophane Ltd
Priority to GB2871446A priority Critical patent/GB626876A/en
Publication of GB626876A publication Critical patent/GB626876A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
    • C08J2361/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • C08J2361/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
    • C08J2361/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Phenolic Resins Or Amino Resins (AREA)

Abstract

A process for the production of a resin dispersion consists in the steps of dispersing a thermo-setting melamine-formaldehyde resin in the partially condensed or polymerized hydrophobic state, dispersed in a liquid medium comprising a non-basic, water-soluble dihydric or trihydric alcohol, and adding to the resulting dispersion a stabilizing agent comprising lactic acid in the proportion of at least 0.2 part of the acid per 1 part of the resin. The resin is insoluble in water at concentrations below 35 per cent, and soluble between 35-70 per cent. The preferred resin is partially condensed trimethylol melamine water-soluble at concentrations between 50 and 65 per cent. Ethylene glycol and glycerine, respectively, are the preferred di- and tri-hydric alcohols. Preferably, 1 part of resin is dispersed in two parts of the alcohol and 0.6 to 1 part of lactic acid is then added. In examples (1), (3) and (4), partially condensed tri-methylol melamine is dispersed in glycerol and lactic acid and water are added; (2) ethylene glycol replaces the glycerol of example (1). The dispersion may be used to anchor moisture-proofed surface coating to regenerated cellulose film. Specifications 593,946 and 626,875, [Group VIII], are referred to.
GB2871446A 1946-09-25 1946-09-25 Improvements in or relating to the production of dispersions of synthetic resins Expired GB626876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2871446A GB626876A (en) 1946-09-25 1946-09-25 Improvements in or relating to the production of dispersions of synthetic resins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2871446A GB626876A (en) 1946-09-25 1946-09-25 Improvements in or relating to the production of dispersions of synthetic resins

Publications (1)

Publication Number Publication Date
GB626876A true GB626876A (en) 1949-07-22

Family

ID=10279911

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2871446A Expired GB626876A (en) 1946-09-25 1946-09-25 Improvements in or relating to the production of dispersions of synthetic resins

Country Status (1)

Country Link
GB (1) GB626876A (en)

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