GB984394A - Improved polymerization process - Google Patents

Improved polymerization process

Info

Publication number
GB984394A
GB984394A GB4529/63A GB452963A GB984394A GB 984394 A GB984394 A GB 984394A GB 4529/63 A GB4529/63 A GB 4529/63A GB 452963 A GB452963 A GB 452963A GB 984394 A GB984394 A GB 984394A
Authority
GB
United Kingdom
Prior art keywords
polymerization
megarads
high energy
polymerization process
trioxane
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
GB4529/63A
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.)
WR Grace and Co
Original Assignee
WR Grace and Co
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 WR Grace and Co filed Critical WR Grace and Co
Publication of GB984394A publication Critical patent/GB984394A/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
    • C08G2/02—Polymerisation initiated by wave energy or by particle radiation
    • 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)
  • Polyethers (AREA)

Abstract

Solid trioxane is irradiated with high energy ionizing radiation at below the threshold temperature for polymerization, then aged for a minimum period of four hours at 0 to below the threshold temperature and then heated to above the polymerization temperature to polymerize. The ageing may be carried out at 0 to 25 DEG C., and the radiation dosage may be 0.001 to 10 megarads (preferably 0.01 to 2 megarads), comprise high energy electrons and take place at -80 DEG to 25 DEG C. The polymerization may be at 30 DEG to 100 DEG C. (preferably 55 to 62%) and the impolymerized trioxane may be separated by evaporation or solvent extraction from the resulting polymer.
GB4529/63A 1962-05-22 1963-02-04 Improved polymerization process Expired GB984394A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19660662A 1962-05-22 1962-05-22

Publications (1)

Publication Number Publication Date
GB984394A true GB984394A (en) 1965-02-24

Family

ID=22726079

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4529/63A Expired GB984394A (en) 1962-05-22 1963-02-04 Improved polymerization process

Country Status (4)

Country Link
BE (1) BE628682A (en)
FR (1) FR1348294A (en)
GB (1) GB984394A (en)
NL (1) NL289545A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1720908B1 (en) * 1966-07-26 1972-05-31 Houilleres Bassin Du Nord Process for the preparation of polymers of trioxane

Also Published As

Publication number Publication date
BE628682A (en)
FR1348294A (en) 1964-01-04
NL289545A (en)

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