5 results about "Deuterated chloroform" patented technology

The invention relates to the field of catalysts, aims to solve the problems of low yield and low deuteration degree of existing catalysts, and provides a preparation method of a composite catalyst for preparing deuterated chloroform, and the preparation method comprises the following steps: S100, taking a molecular sieve-alumina-zinc oxide catalyst, dropwise adding a carbazole ethanol solution into the molecular sieve-alumina-zinc oxide catalyst, then dropwise adding N, N-dimethyl formamide, and carrying out a reaction for 2-4 hours; dissolving with an N, N-dimethylformamide solution to obtain a pre-reaction solution; s200, heating, crystallizing, filtering and drying the pre-reaction solution to obtain a dried product; and S300, obtaining the composite catalyst from the dried product under the induction of an electric field and a magnetic field. According to the invention, the selectivity and conversion efficiency of the molecular sieve, aluminum oxide and zinc oxide as catalysts are utilized, and the carbazole ethanol solution is combined, so that hydroxyl in carbazole ethanol can be partially condensed with residual oxyhydrogen bonds in the molecular sieve, aluminum oxide and zinc oxide except hydrogen bonds at a relatively high temperature to form firm chemical bonds; therefore, the deuteration degree, the purity and the yield of the deuterated chloroform are improved.

A valve regulated lead-acid battery includes at least one cell including an element and an electrolyte solution. The element includes a negative electrode plate, a positive electrode plate, and a separator interposed between the negative electrode plate and the positive electrode plate. The negative electrode plate includes a negative electrode material. The negative electrode material contains a polymer compound having a peak in a range of 3.2 ppm or more and 3.8 ppm or less in a chemical shift of a 1H-NMR spectrum measured using deuterated chloroform as a solvent, or contains a polymer compound having a repeating structure of oxy C2-4 alkylene units. The positive electrode plate includes a positive electrode material. A density of the positive electrode material is 3.70 g / cm3 or more and 4.65 g / cm3 or less.

A xylylene diisocyanate composition includes a xylylene diisocyanate and a specific compound. The specific compound has a peak in a range of chemical shift values of 2.44 ppm to 2.46 ppm based on chloroform in deuterated chloroform when the xylylene diisocyanate composition is mixed with the deuterated chloroform and measured by 1H-NMR measurement.

The invention discloses a synthetic method of deuterated dichloromethane, and belongs to the technical field of organic synthesis. The invention provides a synthetic method of deuterated dichloromethane, which comprises the following steps: mixing deuterated chloroform, an active deuterium substrate, a deuterated phosphine oxide compound, a cationic organic small molecule catalyst and alkali for reaction, and after the reaction, performing post-treatment to obtain the deuterated dichloromethane. According to the invention, deuterated chloroform is taken as a main raw material, and deuterated dichloromethane can be obtained through smooth reaction in a deuterated phosphine oxide compound, an active deuterium substrate, alkali and a cationic organic small molecule catalyst. The reaction strategy is carried out under mild reaction conditions, and byproducts can be directly sold as products or recycled, so that the influence on the environment is greatly reduced, and the preparation cost of the products is effectively reduced.

To provide a resin composition and an adhesive which can suppress bleeding, at least thermosetting. A resin composition comprising: (A) a polymerizable compound having a carbon-carbon double bond, (B) a polythiol compound, (C) a polymerization initiator, and (D) a modified dimethylpolysiloxane satisfying at least one of the following characteristics (a) and (b): (a) an organic substituent containing a COOH group or an OH group is directly bonded to the dimethylpolysiloxane, or is bonded to the dimethylpolysiloxane through a linking group; (b) a signal disappears in deuterated chloroform 1 In the1H NMR spectrum, signals were present in the ranges of 0.3 to -0.3 ppm and 4.4 to 3.2 ppm, and a signal disappeared due to the addition of D2O in the range of 13 to 0 ppm.