Cyclopolycondensations. I. New high temperature aromatic polyquinazolinediones

Yoda, Naoya; Nakanishi, Ryoji; Kurihara, Masaru; Bamba, Yasuo; Tohyama, Shunroku; Ikeda, Kojuro

doi:10.1002/pol.1966.110040103

Cited by 36 publications

(3 citation statements)

References 7 publications

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“…Further heating of 26 to 230-250 • C causes Vol. 6 rearrangement to give poly(quinazolinediones) 27, a polymer exhibiting outstanding thermal stability (98). The polymerization can also be conducted in polyphosphoric acid.…”

Section: Addition/condensation Polymersmentioning

confidence: 99%

Isocyanate‐Derived Polymers

Ulrich

2002

Encyclopedia of Polymer Science and Technology

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Homo‐ and copolymers derived from mono‐ and diisocyanates are treated in this article. Also, addition, condensation, and addition/condensation polymers derived from diisocyanates are included. Of commercial interest are segmented block copolyamide elastomers produced from methylene di‐ p ‐phenylene isocyanate (MDI) and macrodicarboxylic acids and dicarboxylic acids. This reaction polymerization is conducted in a vented extruder or in solution. Also, engineering plastics are obtained from diisocyanates and dicarboxylic acids. Poly(amide imides) and poly(imides) are produced from MDI and TDI (toluene diisocyanate) and trimellitic acid anhydride and isophthalic acid and dianhydrides, respectively. Heterocyclic polymers with useful high temperature properties made from MDI and suitable monomers by a polyaddition/condensation reaction are also included.

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Section: Addition/condensation Polymersmentioning

confidence: 99%

Isocyanate‐Derived Polymers

Ulrich

2002

Encyclopedia of Polymer Science and Technology

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“…Typical extensive applications of polyimides are interlayer insulation films, buffer coating films, alpha‐ray shielding films, and oriented films for liquid crystal displays 5. Polymers of benzoxazinone are thermally stable heterocyclic polymers, which have been prepared by melt or low temperature solution polymerization of suitable aromatic diaminodicarboxylic acids with diacid chlorides 6–8. This type of polymer is of considerable promise because of its high thermal resistance and particularly highly resistance to hydrolytic degradation against strong acid or alkali.…”

Section: Introductionmentioning

confidence: 99%

Novel method for preparation of poly(benzoxazinone-imide)

Agag

Takeichi

2000

J. Polym. Sci. A Polym. Chem.

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“…I n order t o determine the polymer structure-property relationship of p~~lyetherpoly-1.2.4-oxadiazoles, the authors studied the polymerization of bisamidoxime with diphenylether-4.4'-dicarboxylic acid chloride by the low temperature solution polylnerization in two successive steps b y the following Eqs. (1) and (2).…”

Section: Introductionmentioning

confidence: 99%

Cyclopolycondensations. IX. Syntheses of fully aromatic polyetherpoly‐1.2.4‐oxadiazoles

et al. 1967

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The low temperature solution polymerization of aromatic bisamidoximes and aromatic dicarboxylic acid chlorides was studied. Fully aromatic polyetherpoly-0-acylamidoximes of high molecular weight were obtained, which were transformed into thermally stable aromatic polyetherpoly-1.2.4-oxadiazoles by thermal cyclodehydration. As a new monomer, diphenylether-4.4'-dicarboxylic acid chloride was prepared. The solubility of copolymers of poly-0-acylamidoximes with the ether linkages along the polymer chain was found to be remarkably improved compared with the corresponding aromatic poly-0-acylamidoximes. The conditions of the cyclopolycondensation reaction and the characterizations of the resulting polymers are described. ZUSAMMENFASSUNG:Die Losungspolymerisation der aromatischen Bisamidoxime und der aromatischen Dicarbonsaurechloride wurde bei tiefer Temperatur untersucht. Das erhaltene vollkommen aromatische Polyatherpoly-0-acylamidoxim mit hohem Molekulargewicht wurde durch die thermische Cyclodehydratisierung in das warmebestandige Polyatherpoly-1.2.4-oxadiazol mit hohern Molekulargewicht iibergefiihrt. Als neues Monomeres wurde Diphenylather- 4.4'-dicaibonsHurechlorid hergestellt.Es wurde festgestellt, da13 die Loslichkeit des Copolymeren von Poly-0-acylamidoxim, das die Atherbindung in der Polymerkette enthalt, im Vergleich zu den entsprechenden aromatischen Poly-0-acylamidoximen wesentlich verbessert wurde. Die Polymerisationsbedingung der Cyclopolykondensationsreaktion und die Eigenschaften der hergestellten Polymeren werden beschrieben.

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Cyclopolycondensations. I. New high temperature aromatic polyquinazolinediones

Cited by 36 publications

References 7 publications

Isocyanate‐Derived Polymers

Isocyanate‐Derived Polymers

Novel method for preparation of poly(benzoxazinone-imide)

Cyclopolycondensations. IX. Syntheses of fully aromatic polyetherpoly‐1.2.4‐oxadiazoles

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