GB1086774A - Thermally stable polymers - Google Patents

Thermally stable polymers

Info

Publication number
GB1086774A
GB1086774A GB2033065A GB2033065A GB1086774A GB 1086774 A GB1086774 A GB 1086774A GB 2033065 A GB2033065 A GB 2033065A GB 2033065 A GB2033065 A GB 2033065A GB 1086774 A GB1086774 A GB 1086774A
Authority
GB
United Kingdom
Prior art keywords
diisocyanate
cyclic
toluene
compound
specified
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
GB2033065A
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.)
Perstorp AB
Original Assignee
Perstorp AB
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 Perstorp AB filed Critical Perstorp AB
Publication of GB1086774A publication Critical patent/GB1086774A/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
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/006—Polymeric products of isocyanates or isothiocyanates with aldehydes

Landscapes

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

Abstract

A thermally stable polyacetal is prepared by polymerizing trioxane at not above 150 DEG C. in the presence of (i) 0.1 to 10% of an organic isocyanate, (ii) not more than 20% of a copolymerizable cyclic compound or a compound containing a vinyl group and (iii) a Lewis acid catalyst or ionizing radiation. Specified organic isocyanates are 2,4-toluene-diisocyanate, 2,6-toluene-diisocyanate 2,4-toluene-diisocyanate dimer, naphthylene - 1,5 - diisocyanate, diphenylonethane - 4,4 - diisocyanate and triphenylmethane - 4,4,4 - triisocyanate. The compound (ii) may be a cyclic oxide, a cyclic formal, a lactone, a cyclic ester of a carboxylic acid, or other heterocyclic compound. Specified compounds (ii) are 1,3-dioxolane, 1,3-dioxane, ethylene oxide, propylene oxide, epichlorohydrin methacrolein dimer and styrene. Specified catalysts are boron trifluoride, or its complexes. The polymerization may take place with the trioxane in the solid phase or in molten form, but may also take place in solution in such inert solvents as cyclohexane, c -hexane, benzene and nitrobenzene. The polymer may be after-treated with acetic anhydride.
GB2033065A 1964-06-05 1965-05-13 Thermally stable polymers Expired GB1086774A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE684364 1964-06-05

Publications (1)

Publication Number Publication Date
GB1086774A true GB1086774A (en) 1967-10-11

Family

ID=20269742

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2033065A Expired GB1086774A (en) 1964-06-05 1965-05-13 Thermally stable polymers

Country Status (2)

Country Link
DE (1) DE1645277A1 (en)
GB (1) GB1086774A (en)

Also Published As

Publication number Publication date
DE1645277A1 (en) 1970-09-17

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