Polymerisation von Trioxan

Abstract

Nach einem Uberblick uber die

Synthesis of copolymer from 1,3,5‐trioxane and 1,3‐dioxolane catalyzed by Maghnite‐H+

“…One route is the polymerization of formaldehyde (acetal homopolymer), [1][2][3][4][5][6] and the other method is copolymerization of trioxane with cyclic ethers or acetals (acetal copolymer), preferably with 1,3-dioxolane [7][8][9][10] or ethylene oxide. [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] The copolymerization of trioxane is of considerable industrial importance, because the acetal copolymer has better thermal properties and superior resistance to alkali than homopolymer and it is a commercially useful engineering plastic.…”

Ionic Polymerization

“…This can be seen from the observation that during copolymerization of trioxane with 1,3-dioxolane, ethylene oxide, and similar comonomers, the comonomer is nearly completely consumed at an early stage of reaction [229,[234][235][236]. One would therefore expect longer sequences of these comonomers.…”

“…The smaller epoxides, ethylene and propylene oxide, though able to polymerize by a cationic and anionic mechanism, are not polymerized cationically, because of the existence of side reactions leading to dioxane or dioxolane [228]. In contrast to these smaller homologs, THF and trioxane can only be polymerized by a cationic mechanism [23,229].…”

Polyoxymethylenes

“…Comprehensive summaries of the homopolymerization and copolymerization of trioxane can be found in [45][46][47].…”