57764-46-2

Usage

Uses

Used in Laboratory Research:
2,6-Dihydroxybenzonitrile is used as a chemical compound for various laboratory research purposes, contributing to the advancement of scientific knowledge and potential applications in different industries. Its unique structure and properties make it a valuable subject for study and experimentation.

InChI:InChI=1/C7H5NO2/c8-4-5-6(9)2-1-3-7(5)10/h1-3,9-10H

Upstream product

• 387-46-2 2,6-dihydroxybenzaldehyde 
• 16932-49-3 2,6-dimethoxybenzonitrile 

Downstream Products

• 171017-44-0 2,6-dihydroxybenzenecarbothioamide 
• 1331937-24-6 2,6-dihydroxybenzamidoxime 
• 171017-46-2 <2-(2,6-dihydroxyphenyl)-4-thiazolyl>acetic acid ethyl ester 
• 171017-50-8 <2-(2,6-dihydroxyphenyl)-4-thiazolyl>acetic acid 

Relevant academic research and scientific papers

Enhancing electrical energy storage using polar polyimides with nitrile groups directly attached to the main chain

A set of 12 new polyimides (PIs) with one or three polar CN dipoles directly attached to the aromatic diamine part were synthesized and their electric energy storage properties were studied using broadband dielectric spectroscopy (BDS) and electric displacement-electric field (D-E) loop measurements to determine their potential for high temperature film capacitors for aerospace applications. It was found that adding highly polar nitrile groups to the PI structure increased permittivity and thus electrical energy storage, especially at high temperatures, and 3 CN dipoles were better than 1 CN dipole. Below the glass transition temperature (Tg), a weak γ transition was observed around -100°C and a broad β transition was observed between 100 and 150°C. It was the β (i.e., precursor dipolar motion before long-range segmental motion, or glass transition), rather than the γ sub-Tg transition that substantially increased the permittivity of PIs. From the BDS results on PIs having 3 nitrile groups, the enhancement in permittivity from permanent dipoles decreased with dianhydride in the order of pyromellitic dianhydride (PMDA) > 4,4′-oxydiphthalic dianhydride (OPDA) > 1,1,1,3,3,3-hexafluoropropane dianhydride (6FDA) > 4,4′-benzophenonetetracarboxylic dianhydride (BTDA). Meanwhile, the increase in permittivity also decreased in the order of para-para, meta-para, and meta-meta linkage in the diamine, suggesting that the para-para linkage favored easier dipole rotation than the meta-meta linkage. From the D-E loop study, the PIs with a combination of PMDA dianhydride and a para-para linkage exhibited the highest discharged energy density and a reasonably low loss.

Aromatic diamines containing three ether-linked-benzonitrile moieties, polymers thereof, and methods of making the same

The present invention includes compositions and methods of preparation for symmetrical and unsymmetrical diamines containing three ether-linked benzonitrile moieties that may be used as monomers for the manufacture of a variety of functional polymers. For example, the presently disclosed multi(ether-benzonitrile) diamines may polymerize with: (i) a dianhydride to form a polyimide; (ii) a diacid chloride directly or with a dicarboxylic acid (diacid) in conjunction with a suitable promoter/catalyst combination such as triethylphosphite/pyridine to form a polyamide; and (iii) 1,2,4-benzenetricarboxylic anhydride (trimellitic anhydride), trimellitic anhydride chloride, or a diacid/diacid chloride derived from trimellitic anhydride and an aromatic diamine to form a poly(amide-imide).