Noda, Takumi; Iwasaki, Takuma; Takada, Kenji; Kaneko, Tatsuo published the artcile< Soluble Biobased Polyimides from Diaminotruxinic Acid with Unique Bending Angles>, Recommanded Product: Cyclobuta[1,2-c:3,4-c’]difuran-1,3,4,6(3aH,3bH,6aH,6bH)-tetraone, the main research area is soluble bio polyimide diaminotruxinic acid bending solubility tensile thermal.
Biobased diamines with unique bending angles, β- and δ-type truxinic acids, were prepared from functionalized 4-nitrocinnamic acid derivatives via solid-state photodimerization and further chem. modification. The obtained diamines were polymerized with tetracarboxylic acid dianhydrides to produce soluble polyimides via chem. imidization at a high efficiency. The obtained δ-type-based polyimides exhibited a high thermostability at 10% weight loss temperature of ~415°C and good solubility in organic solvents. Most of the polyimides were soluble in chloroform and dichloromethane, as well as polar organic solvents. Tensile test results showed that biopolyimide films from cyclobutanetetracarboxylic dianhydride exhibited ~10.2% elongation at break, indicating high flexibility.
Macromolecules (Washington, DC, United States) published new progress about Crystal structure. 4415-87-6 belongs to class tetrahydrofurans, and the molecular formula is C8H4O6, Recommanded Product: Cyclobuta[1,2-c:3,4-c’]difuran-1,3,4,6(3aH,3bH,6aH,6bH)-tetraone.
Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem