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Dimethylglyoxime is a chemical compound described by the formula CH₃C(NOH)C(NOH)CH₃. Its abbreviation is dmgH₂ for neutral form, and dmgH for anionic form, where H stands for hydrogen. This colourless solid is the dioxime derivative of the diketone butane-2,3-dione (also known as diacetyl). DmgH₂ is used in the analysis of palladium or nickel. Its coordination complexes are of theoretical interest as models for enzymes and as catalysts. Many related ligands can be prepared from other diketones, e.g. benzil.
A self-healing polyurethane composition and its preparation method
ActiveCN122080762AInhibition of agglomerationPromote self-healing processAntifouling/underwater paintsPaints with biocidesPolymer scienceCrack resistance
This application belongs to the technical field of polyurethane compositions, specifically providing a self-healing polyurethane composition and its preparation method. The composition is obtained by mixing the following raw materials in parts by weight: 50-60 parts polycaprolactone diol, 15-20 parts isocyanate, 0.5-2 parts leveling agent, 1-2 parts light stabilizer, 20-30 parts composite solvent, 2-5 parts aliphatic-copper complex crystals, 5-8 parts dimethylglyoxime, and 0.01-0.05 parts catalyst. The aliphatic-copper complex crystals are obtained by crystallization of a mixture of hydrogenated castor oil and a copper complex. The self-healing polyurethane composition coating obtained by this application has the advantages of stain resistance, crack resistance, and resistance to folding and matte finish.
Owner:NINGBO FUNA NEW MATERIALS TECH CO LTD