Isonicotinic acid CAS 55-22-1

The method includes the following steps:

• Take 4-picoline as raw material, use water as solvent, and oxidize it to 4-picolinic acid with potassium permanganate, wherein the molar ratio of 4-picoline to potassium permanganate is 1:2.1 -2.3, the oxidation temperature is 75-80 ℃, heating for 35min, the reaction is completely adjusted to the acidity of the reaction solution, and then cooled and filtered to obtain 4-picolinic acid;
• 4-picolinic acid and methanol generate methyl 4-picolinate under acidic conditions, wherein the molar ratio of 4-picolinic acid and methanol is 1:1.3;
• reducing methyl 4-picolinate is 4-pyridinemethanol;
• 4-pyridinemethanol reacts with thionyl chloride to obtain the target product 4-chloromethylpyridine hydrochloride, and the molar ratio of 4-pyridinemethanol to thionyl chloride is 1:1.1-1.3.

Include the following components by weight:
20-35 parts of cis-isoprene rubber, 10-13 parts of carbon black, 8-12 parts of polyoxypropylene glyceryl ether, 7-10 parts of potassium tetraborate, 9-14 parts of polyisobutylene, dimethylaminoethanol dianisole 10-15 parts, 6-10 parts of petroleum resin, 3-8 parts of tetraethylammonium iodide, 7-16 parts of methylprednisolone acetate, 2-6 parts of zinc molybdate, 5 parts of tetraethyl silicate -9 parts, 1-3 parts of expanded perlite, 2-4 parts of manganese antimonide, 9-12 parts of polyethylene wax, 12-15 parts of 4-picolinic acid.
The waterproof material can meet the needs of waterproof operation in a high temperature environment, and has wide application prospects.

Each substance containing the following weight components:
50-70 parts of base oil, 10-15 parts of 2-decen-2-ol, 5-9 parts of chloroform, 3-7 parts of 2-amino-2-methylpropane, 1H-imidazole-4-ethylamine 6-10 parts, 12-16 parts phthalimide, 4-8 parts calcium lignosulfonate, 2-5 parts zinc dibutyl dithiocarbamate, 10-ethylene glycol monomethyl ether 15 parts, 8-13 parts of propylparaben, 7-13 parts of dicyclopentadiene, 4-9 parts of 4-picolinic acid, 3-8 parts of 2,4-dinitrophenol.
By using a variety of chemical substances to modify the base oil, it can adapt to the harsh environment of severe cold and meet the requirements of lubricating use in this environment.

Include the following components by weight:
40-80 parts of fiber material, 10-20 parts of polyisoprene, 15-22 parts of silicone rubber, 8-15 parts of folin isobutyrate, 10-18 parts of polybrene, 7-4-picolinic acid 14 parts, 2-6 parts of hexamethylcyclotrisiloxane, 4-8 parts of urea, 1-4 parts of calcium chloride, 6-12 parts of isocyanate.
The textile fibers have good electrical conductivity, and people can directly control smart devices through the textiles prepared from the textile fibers, and have strong practical performance.