FR77809E - Process for preparing very high molecular weight polyoxymethylenes by polymerization of formaldehyde - Google Patents

Process for preparing very high molecular weight polyoxymethylenes by polymerization of formaldehyde

Info

Publication number
FR77809E
FR77809E FR829234A FR829234A FR77809E FR 77809 E FR77809 E FR 77809E FR 829234 A FR829234 A FR 829234A FR 829234 A FR829234 A FR 829234A FR 77809 E FR77809 E FR 77809E
Authority
FR
France
Prior art keywords
formaldehyde
polymerization
preparing
molecular weight
high molecular
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
FR829234A
Other languages
French (fr)
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
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
Priority claimed from DED30477A external-priority patent/DE1157395B/en
Priority claimed from DED30845A external-priority patent/DE1180519B/en
Application filed by Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Priority to FR829234A priority Critical patent/FR77809E/en
Application granted granted Critical
Publication of FR77809E publication Critical patent/FR77809E/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
    • C08G2/06—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
    • 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
    • C08G2/08—Polymerisation of formaldehyde
    • 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
    • C08G2/10—Polymerisation of cyclic oligomers of formaldehyde

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
FR829234A 1959-04-18 1960-06-07 Process for preparing very high molecular weight polyoxymethylenes by polymerization of formaldehyde Expired FR77809E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR829234A FR77809E (en) 1959-04-18 1960-06-07 Process for preparing very high molecular weight polyoxymethylenes by polymerization of formaldehyde

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DED30477A DE1157395B (en) 1959-04-18 1959-04-18 Process for the preparation of eupolyoxymethylenes
DED30845A DE1180519B (en) 1959-04-18 1959-06-12 Process for the preparation of eupolyoxymethylenes
FR829234A FR77809E (en) 1959-04-18 1960-06-07 Process for preparing very high molecular weight polyoxymethylenes by polymerization of formaldehyde

Publications (1)

Publication Number Publication Date
FR77809E true FR77809E (en) 1962-04-27

Family

ID=31720920

Family Applications (1)

Application Number Title Priority Date Filing Date
FR829234A Expired FR77809E (en) 1959-04-18 1960-06-07 Process for preparing very high molecular weight polyoxymethylenes by polymerization of formaldehyde

Country Status (1)

Country Link
FR (1) FR77809E (en)

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