Yan, Jingling; Li, Taihang; Wang, Zhen; Gao, Lianxun; Ding, Mengxian published the artcile< Hydrazine-based polyimides from isomeric bis(chlorophthalimide)s>, Related Products of 118-45-6, the main research area is hydrazine isomeric dichloro bisphthalimide thiobisbenzenethiol polyimide thermal mech property.
3,3′-Dichloro-N,N’-bisphthalimide (3,3′-DCBPI), 3,4′-dichloro-N,N’-bisphthalimide (3,4′-DCBPI), and 4,4′-dichloro-N,N’-bisphthalimide (4,4′-DCBPI) were synthesized from 3- or 4-chlorophthalic anhydrides and hydrazine in glacial acetic acid. The yield of 3,3′-DCBPI (90%) was much higher than that of 4,4′-DCBPI (33%) because of the better stability of the intermediate, 3-chloro-N-aminophthalimide, and 3,3′-DCBPI. A series of hydrazine-based polyimides were prepared from isomeric DCBPIs and 4,4′-thiobisbenzenethiol (TBBT) in N,N-dimethylacetamide in the presence of tributylamine. Inherent viscosity of these polymers was in the range of 0.51-0.69 dL/g in 1-methyl-2-pyrrolidinone (NMP) at 30 °C. These polyimides were soluble in 1,1,2,2-terachloroethane, NMP, and phenols. The 5% weight-loss temperatures (T5%s) of the polymers were near 450 °C in N2. Their glass-transition temperatures (Tgs) determined by dynamic mech. thermal anal. and differential scanning calorimetry increased according to the order of polyimides based on 4,4′-DCBPI, 3,4′-DCBPI, and 3,3′-DCBPI. The hydrolytic stability of these polymers was measured under acid, basic, and neutral conditions and the results indicated that the order was 3,3′-DCBPI/TBBT > 3,4′-DCBPI/TBBT > 4,4′-DCBPI/TBBT.
Journal of Polymer Science, Part A: Polymer Chemistry published new progress about Elongation at break. 118-45-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H3ClO3, Related Products of 118-45-6.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics