GB888559A - Process for the manufacture of formaldehyde polymers - Google Patents

Process for the manufacture of formaldehyde polymers

Info

Publication number
GB888559A
GB888559A GB40271/60A GB4027160A GB888559A GB 888559 A GB888559 A GB 888559A GB 40271/60 A GB40271/60 A GB 40271/60A GB 4027160 A GB4027160 A GB 4027160A GB 888559 A GB888559 A GB 888559A
Authority
GB
United Kingdom
Prior art keywords
formaldehyde
polymer
added
manufacture
content
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
GB40271/60A
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.)
Houilleres du Bassin du Nord et du Pas de Calais
Original Assignee
Houilleres du Bassin du Nord et du Pas de Calais
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 Houilleres du Bassin du Nord et du Pas de Calais filed Critical Houilleres du Bassin du Nord et du Pas de Calais
Publication of GB888559A publication Critical patent/GB888559A/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
    • C08G2/08—Polymerisation of formaldehyde

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 aqueous solution in the presence of at least as much added formaldehyde polymer as there is of formaldehyde. The formaldehyde may be mixed with the added polymer to form a nonpasty mixture of water content below 30% until polymerization is complete and the mixture dried to give a granular polymer of CH2O content of at least 99%. The formaldehyde solution preferably has a formaldehyde content of 70%, while the quantity of added polymer may be 140% and the temperature of polymerization 20 DEG to 40 DEG C. The process may be carried out continuously, a part of the polymer produced being recycled to fresh formaldehyde solution. Apparatus for carrying out the process is described.
GB40271/60A 1960-03-16 1960-11-23 Process for the manufacture of formaldehyde polymers Expired GB888559A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR888559X 1960-03-16

Publications (1)

Publication Number Publication Date
GB888559A true GB888559A (en) 1962-01-31

Family

ID=9376844

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40271/60A Expired GB888559A (en) 1960-03-16 1960-11-23 Process for the manufacture of formaldehyde polymers

Country Status (1)

Country Link
GB (1) GB888559A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3300535A (en) * 1963-03-19 1967-01-24 Tenneco Chem Production of polyoxymethylene glycols

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3300535A (en) * 1963-03-19 1967-01-24 Tenneco Chem Production of polyoxymethylene glycols

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