Huang, Xiao-hua; Huang, Wei; Zhou, Yong-feng; Yan, De-yue published the artcile< Synthesis and characterization of highly soluble aromatic polyimides>, Formula: C8H3ClO3, the main research area is heat resistant soluble aromatic polyimide polythioether polysulfone.
Two highly soluble aromatic polyimides were prepared from 4,4′-diamino-3,3′-di-tert-butyldiphenylmethane (MBTBA) and 3,3′,4,4′-diphenyl sulfide tetracarboxylic dianhydride (DTDA) or 3,3′,4,4′-diphenyl sulfone tetracarboxylic dianhydride (DSDA). Both polymers showed excellent solubility in common solvents, such as chloroform, THF and dioxane, at room temperature The number-average mol. weight was 6.0 × 104 and 8.3 × 104 according to gel permeation chromatog. relative to polystyrene standards, and the polydispersity index was 1.80 and 1.82, resp. The glass-transition temperatures were 286° and 314° (or 315° and 358°) as measured by differential scanning calorimetry (or dynamic mech. anal.). The 5% weight loss temperature of both polymers was near 490° in N2 atm. as determined using thermogravimetric anal. The results indicated that the tert-Bu pendent groups reduced the interactions among the polymer chains, and the thioether or sulfone moiety provided flexibility, thus improving the solubility in organic solvents without the loss of thermal stability. Transparent and flexible films of the polyimides were obtained via solution casting. The MBTBA-DTDA membrane had higher storage modulus than the MBTBA-DSDA membrane.
Chinese Journal of Polymer Science published new progress about Complex modulus, tan δ. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Formula: C8H3ClO3.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics