GB1024810A - Process for preparing copolymers of formaldehyde - Google Patents

Process for preparing copolymers of formaldehyde

Info

Publication number
GB1024810A
GB1024810A GB4361064A GB4361064A GB1024810A GB 1024810 A GB1024810 A GB 1024810A GB 4361064 A GB4361064 A GB 4361064A GB 4361064 A GB4361064 A GB 4361064A GB 1024810 A GB1024810 A GB 1024810A
Authority
GB
United Kingdom
Prior art keywords
formaldehyde
specified
formal
dioxolane
halides
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
GB4361064A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst 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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB1024810A publication Critical patent/GB1024810A/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
    • C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
    • C08G2/18—Copolymerisation of aldehydes or ketones
    • C08G2/24—Copolymerisation of aldehydes or ketones with acetals
    • 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
    • C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
    • C08G2/06—Catalysts
    • 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
    • C08G4/00—Condensation polymers of aldehydes or ketones with polyalcohols; Addition polymers of heterocyclic oxygen compounds containing in the ring at least once the grouping —O—C—O—

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)

Abstract

Formaldehyde is polymerized in an inert solvent with 1 to 50% based on the monomer mixture of a cyclic formal in the presence of 0.01 to 1.0% of a cationic catalyst at +20 to +100 DEG C. Specified cyclic formals are 1,3-dioxolane, 4 - phenyl - 1,3 - dioxolane, 1,3-dioxane, 5 - dimethyl - 1,3 - dioxane, 1,3-dioxoacyclopeptane, 1,3,6 - trioxyacyclooctane, 1,4 - butane diol formal and diethylene glycol formal. Specified catalysts are the halides of boron, aluminium, titanium, zinc, iron and especially antimony or tin and their complex compounds with, e.g. ethers or organic acids and the oxonium compounds of these halides, e.g. triethyl oxonium fluoroborate or their diazonium complex compounds, e.g. p-nitrophenyl diazonium fluoroborate-preferred catalysts are SbCl5 and SnCl4 and [(C6H5)3O] SbCl6 and [(C2H5)3O]SnCl6. The polymerization may take place in a mixture of solvents. Specified are aliphatic or aromatic hydrocarbons, halogenated hydrocarbons and ethers. The formaldehyde may be added and the polymerization batch then stirred for 10 minutes to 5 hours at 20 DEG to 100 DEG C., the polymer sucked off, and treated with a base before or after washing with a solvent.
GB4361064A 1963-10-26 1964-10-26 Process for preparing copolymers of formaldehyde Expired GB1024810A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF0041106 1963-10-26

Publications (1)

Publication Number Publication Date
GB1024810A true GB1024810A (en) 1966-04-06

Family

ID=7098519

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4361064A Expired GB1024810A (en) 1963-10-26 1964-10-26 Process for preparing copolymers of formaldehyde

Country Status (4)

Country Link
BE (1) BE654836A (en)
DE (1) DE1495754B2 (en)
GB (1) GB1024810A (en)
NL (1) NL6412355A (en)

Also Published As

Publication number Publication date
NL6412355A (en) 1965-04-27
DE1495754A1 (en) 1969-07-17
DE1495754B2 (en) 1972-02-10
BE654836A (en) 1965-04-26

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