GB1120524A - Process for production of thermally stable polyoxymethylenes - Google Patents

Process for production of thermally stable polyoxymethylenes

Info

Publication number
GB1120524A
GB1120524A GB1004166A GB1004166A GB1120524A GB 1120524 A GB1120524 A GB 1120524A GB 1004166 A GB1004166 A GB 1004166A GB 1004166 A GB1004166 A GB 1004166A GB 1120524 A GB1120524 A GB 1120524A
Authority
GB
United Kingdom
Prior art keywords
sncl4
dimethyl ether
depg
glycol
trioxan
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
GB1004166A
Inventor
Nikolai Sergeevich Enikolopov
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.)
INST KHIM FIZ AN USSR
Original Assignee
INST KHIM FIZ AN USSR
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 INST KHIM FIZ AN USSR filed Critical INST KHIM FIZ AN USSR
Priority claimed from NL6611865A external-priority patent/NL6611865A/xx
Publication of GB1120524A publication Critical patent/GB1120524A/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
    • C08G2/38—Block or graft polymers prepared by polymerisation of aldehydes or ketones on to macromolecular compounds
    • 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
    • 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
    • C08G2/30—Chemical modification by after-treatment
    • C08G2/34—Chemical modification by after-treatment by etherification

Landscapes

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

Abstract

Polyoxymethylenes are produced by polymerizing formaldehyde or trioxan in the presence of an ionic catalyst and of blocked oligomers of the formula R1-(-OCH2-)-nR2 wherein R1 and R2 are alkly, aryl, alkaryl, aralkyl or acyl, and n=2 to 12. Preferred amounts of catalyst are 10-4 to 10-1 mole per litre of reaction mixture, and the oligomers are present in less than 10% by weight of trioxan or, using formaldehyde, less than 10% by weight of polymerization medium. Formaldehyde is suitably polymerized using an inert organic solvent medium, anionic or cationic catalysts, and temperatures of -110 DEG to +100 DEG C., while trioxan is suitably polymerized as a melt, in the solid phase, or in an inert organic solvent medium using cationic catalysts, at temperatures of 0 DEG to 110 DEG C. for the solid phase and 70 DEG to 90 DEG C. for the melt or solvent polymerization. Exemplified oligomers and catalysts are (1), (4), (8) the dimethyl ether of pentaoxymethylene glycol (DEPG) and BF3 ether, (2), (5) DEPG and SnCl4, (3), (6) DEPG and H2SO4, (7) dimethyl ether of dioxymethylene glycol and BF3 ether, (9) DEPG and SnCl4, (10) dimethyl ether of dioxymethylene glycol and SnCl4, (11) dimethyl ether of heptaoxymethylene glycol and SnCl4, and (12) dimethyl ether of dioxymethylene glycol and SnCl4.
GB1004166A 1966-08-23 1966-03-08 Process for production of thermally stable polyoxymethylenes Expired GB1120524A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL6611865A NL6611865A (en) 1966-08-23 1966-08-23
NL6611866A NL6611866A (en) 1966-08-23 1966-08-23

Publications (1)

Publication Number Publication Date
GB1120524A true GB1120524A (en) 1968-07-17

Family

ID=26644084

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1004166A Expired GB1120524A (en) 1966-08-23 1966-03-08 Process for production of thermally stable polyoxymethylenes

Country Status (3)

Country Link
FR (1) FR1462943A (en)
GB (1) GB1120524A (en)
NL (1) NL6611866A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2156112A1 (en) * 1970-11-12 1972-05-18 Sir Soc Italiana Resine Spa Process for the production of high molecular weight polyoxymethylenes
FR2881750A1 (en) * 2005-02-09 2006-08-11 Arkema Sa NOVEL METHOXY LIQUID FUELS USED IN FUEL CELLS
EP1938684A1 (en) 2006-12-27 2008-07-02 Arkema France Use of compounds of formula (I) and/or (II) for the preservation of human or animal bodies and compositions comprising the same
WO2012052671A1 (en) 2010-10-18 2012-04-26 Arkema France Carbon oxide capture
WO2013171386A1 (en) 2012-04-10 2013-11-21 Total Raffinage Chimie Method for processing a gas stream by absorption

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2156112A1 (en) * 1970-11-12 1972-05-18 Sir Soc Italiana Resine Spa Process for the production of high molecular weight polyoxymethylenes
FR2881750A1 (en) * 2005-02-09 2006-08-11 Arkema Sa NOVEL METHOXY LIQUID FUELS USED IN FUEL CELLS
WO2006084993A1 (en) * 2005-02-09 2006-08-17 Arkema France Fuel cells containing a fuel soluble in aqueous medium and having a boiling point higher than 65 °c
EP1938684A1 (en) 2006-12-27 2008-07-02 Arkema France Use of compounds of formula (I) and/or (II) for the preservation of human or animal bodies and compositions comprising the same
WO2012052671A1 (en) 2010-10-18 2012-04-26 Arkema France Carbon oxide capture
WO2013171386A1 (en) 2012-04-10 2013-11-21 Total Raffinage Chimie Method for processing a gas stream by absorption

Also Published As

Publication number Publication date
NL6611866A (en) 1968-02-26
FR1462943A (en) 1966-12-16

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