5 results about "Sulfur Ethers" patented technology

Provided is a method for preparing Compound II, wherein the method includes the following steps: using Compound I as a raw material, performing a reaction under the action of an organometallic catalyst and a phase transfer catalyst, and oxidizing with hydrogen peroxide to obtain Compound II. The catalyst utilized in the present application exhibits remarkably high activity for the oxidation of sulfur ether compounds, leading to the preparation of sulfone compounds. The method for preparing Compound II significantly reduces the amount of catalyst required, effectively diminishing the consumption of non-renewable scarce strategic resources, while concurrently reducing the potential hazards to the natural environment. The novel method exhibits a substantial reduction in the amount of catalyst required, leading to a concurrent decrease in the consumption of non-renewable resources. Concurrently, it significantly mitigates potential harm to the natural environment and human health. The solvent utilized in this method is easy to be recycled and reused, and enhances overall process efficiency by reducing resource consumption, waste generation, and treatment costs, thereby rendering it more suitable for industrial production.

The invention discloses an anti-oxidation TLPS slurry for through hole plugging of an HDI high-density interconnected printed circuit board, and relates to the technical field of anti-oxidation TLPS slurry. Through synergism of deoxidation of the organic acid activator and endogenous oxidation resistance of the thioether-containing structure curing agent / composite antioxidant, oxidation generation of the copper powder in high-temperature curing can be more effectively inhibited, and therefore the occurrence of oxidation phases is reduced. A long alkyl chain of the special anhydride curing agent is beneficial to reducing interfacial tension and improving wetting and particle rearrangement of the resin on high-filling metal powder, and meanwhile, curing kinetics is regulated and controlled to be lagging behind metal interdiffusion, so that the tendency of holes and uncompact sintering caused by particles locked by too early curing is relieved, and the service life of the high-filling metal powder is prolonged. And finally, a stable metallurgical communication conductive path is easier to form.

The application provides a grafted flexible side chain cation group sulfur ether flexible spacer anion exchange membrane material, a molecular structure formula of the anion exchange membrane material is shown as formula 1: the formula 1 is divided into a flexible side chain functionalized structure unit and a non-functionalized structure unit, the content of the flexible side chain functionalized structure unit is x=0.25-0.40; the content of the non-functionalized structure unit is 1-x=0.60-0.75; n=350-1000, the toughness of the polymer membrane material is improved by introducing a sulfur ether flexible spacer on a polymer main chain; the ion conductivity is improved by synergistically introducing a piperidine ion salt with a long flexible side chain to form a double piperidine structure, and the alkali resistance stability of the polymer membrane material can also be improved.

The invention discloses a high-toughness epoxy resin composition and a preparation process, and particularly relates to the field of modified epoxy resin, and the preparation process comprises the following steps: compounding 5-15 layers of electrostatic spinning nanofiber prepreg with an epoxy resin matrix containing dynamic covalent bonds (furan / bismaleimide), and adding 10-15 parts of SiO2 / polythioether core-shell particles; the viscosity of the resin is regulated and controlled to 800 mPa.s through pre-reaction, and fiber dispersion and interface strengthening are achieved in combination with a stepped curing process. According to the scheme, through the synergistic effect of nanofiber interlayer enhancement, dynamic bond energy dissipation and core-shell particle crack pinning, the impact strength and the bending strength are remarkably improved, meanwhile, the self-repairing potential is achieved, the process stability is high, the problems of fiber swelling, multi-phase interface degradation and internal stress accumulation in a traditional process are solved, and the method is suitable for industrial production. And the bottleneck of single performance and interface deterioration of the traditional toughening scheme is broken through.

The application discloses an organic sulfur composite agent, a preparation method thereof and application of the organic sulfur composite agent as a vulcanizing agent. The organic sulfur composite agent contains linear organic sulfur and cyclic organic sulfur. The preparation method of the organic sulfur composite agent comprises the following steps: mixing linear low sulfur ether, low-carbon olefin, a sulfur source and an alkaline catalyst, and then performing reaction; and after the reaction is completed, the organic sulfur composite agent is obtained through temperature reduction and separation. The organic sulfur composite agent not only has a simple preparation method and is easy to control, but also contains cyclic organic polysulfide with a long sulfur chain and has a high mass content of the cyclic polysulfide.