5 results about "Thiophosphoric Acid Esters" patented technology

The application provides an oligonucleotide-thiophosphonate compound shown in formula I and a synthesis method thereof, the synthesis method is as follows: taking an oligonucleotide-thiol compound shown in formula III and a phosphonate compound shown in formula II as raw materials, reacting in a solvent to obtain the oligonucleotide-thiophosphonate compound shown in formula I. The method has small damage to DNA, good universality, simple operation, mild conditions and can obtain the oligonucleotide-thiophosphonate compound in high yield, and provides a new method for expanding and enriching a DELT compound library.

This invention discloses a highly efficient selective UV-absorbing film based on polyvinyl acetal and its preparation method, belonging to the technical field of polymer functional membrane materials. The UV-absorbing film comprises the following components in parts by weight: 55-95 parts of matrix resin, 5-45 parts of plasticizer, 0.005-1.2 parts of core UV absorber, 0.01-0.3 parts of auxiliary UV absorber, 0.01-0.8 parts of composite antioxidant, 0.01-0.8 parts of light stabilizer, and 0.0025-0.0065 parts of metal ion additive. The core UV absorber is an alkyl-modified benzoxazinone compound, and the composite antioxidant is a combination of a hindered phenolic resin as the main antioxidant and a thiophosphate ester as the auxiliary antioxidant. This invention achieves highly efficient blocking of UV-B radiation and high transmittance of UV-A radiation. Simultaneously, the film material has advantages such as low initial yellowing, excellent long-term anti-yellowing performance, good thermal stability, good compatibility with the matrix, and no exudation. The present invention also provides a method for preparing the core UV absorber and a method for preparing the membrane, which are simple processes and suitable for industrial production.

The application relates to the technical field of batteries, in particular to an electrolyte and a battery; the electrolyte comprises an organic solvent, a lithium salt and an additive, the additive comprises a first additive; the first additive comprises a silicon-based sulfonate compound and a thiophosphate compound, the silicon-based sulfonate compound has a structure shown in formula I, and the thiophosphate compound has a structure shown in formula II: formula I; formula II. Compared with the prior art, the application adds the additive containing the silicon-based sulfonate compound and the thiophosphate compound, improves the stability and ion conductivity of an interface film, and significantly improves the cycle life, high-temperature performance and low-temperature performance of a high-voltage lithium ion battery.

PROBLEM TO BE SOLVED: To provide a grease composition which exhibits excellent friction and wear resistance characteristics and realizes a long service life even in high-temperature and high-speed-rotation environments. SOLUTION: A grease composition containing a synthetic hydrocarbon oil, a urea-based thickener, and an extreme pressure additive, in which the extreme pressure additive is at least one selected from the group consisting of alkenyl acid phosphates and trialkyl trithiophosphites and the grease composition is free from metal stearates and amide compounds.