5 results about "Sec-Butyl acetate" patented technology

The present disclosure relates to compositions and methods, including prodrugs of (S)-sec-butyl 2-(3-(4-(2- (diethylamino)ethoxy)-3,5-diiodobenzoyl)benzofuran-2-yl) acetate that find use in the treatment of diseases and disorders, such as therapies for cardiovascular disease, including cardiac arrhythmias, including, without limitations, atrial fibrillation, paroxysmal atrial fibrillation, atrial flutter, ventricular arrhythmias, or ventricular fibrillation.

The invention provides a lathe machining aluminum scrap scratch resistant coating for motorcycle hubs and a preparation process thereof, and belongs to the technical field of coatings, the preparation process comprises the following steps: S1, preparing silicon-zirconium hybrid sol; step S2, preparing an epoxy modified prepolymer solution; s3, adding a hydroxy acrylic resin solution into a reaction kettle, stirring, adding butyl acetate and sec-butyl acetate, stirring, adding hexamethoxymethyl melamine, the epoxy modified prepolymer solution, BYK4510, organobentonite and propylene carbonate, stirring, adding the silicon-zirconium hybrid sol, stirring, adding BYK333, BYK-066N, polyethylene micro-powder wax and PTFE micro-powder, stirring at a reduced speed, and cooling to room temperature to obtain a coating; and finally, adding the aluminum paste mixture, uniformly mixing, and filtering to obtain the lathe machining aluminum scrap scratch resistant coating for the motorcycle hub. The coating provided by the invention can realize the purposes of scratch resistance, stripping resistance and good appearance maintenance of the coating for resisting the scratch of the lathe machining aluminum scraps for the motorcycle hub.

The invention discloses varnish for an imitation electrosilvering coating as well as a preparation method and application of the varnish. The varnish comprises the following raw materials in parts by weight: a component A: 20-60 parts of acrylic resin A, 20-60 parts of acrylic resin B, 1-20 parts of sec-butyl acetate, 1-20 parts of DIBK, 1-20 parts of 120 # solvent oil, 0.1-0.5 part of a leveling wetting agent, 0.5-2 parts of an anti-aging additive and 0.05-0.2 part of a catalyst; the component B comprises the following components in parts by weight: 50-70 parts of a curing agent and 30-50 parts of a solvent B; the acrylic resin A and the acrylic resin B which do not bite the electroplating silver colored paint are selected as main bodies, the acrylic resin A and the acrylic resin B have excellent performance, and sec-butyl acetate is selected as a fast-drying weak-solubility solvent to reduce the degree of corroding the colored paint. Through screening and matching of the matrix resin, the main solvent and other key components, the varnish suitable for being overlaid on the electro-silvering imitation coating is obtained.

This invention belongs to the field of catalyst technology, and provides a dedicated catalyst for the synthesis of sec-butyl acetate, its preparation method, and its application. The invention first mixes water and a dispersant to obtain an aqueous phase. A functional monomer, a porogen, and an initiator are then added sequentially to the aqueous phase to carry out a polymerization reaction, yielding a prepolymer. The prepolymer is then mixed with a sulfonating agent and subjected to a sulfonation reaction to obtain a sulfonated resin. Finally, the sulfonated resin is mixed with a solvent and subjected to heat treatment to obtain the catalyst. The functional monomer includes a first monomer, a second monomer, and a crosslinking monomer. The second monomer includes at least one selected from butyl acrylate, butyl methacrylate, ethyl acrylate, and 2-ethylhexyl acrylate. This invention significantly reduces the catalyst's adsorption and reactivity to polycarbonate hydrocarbons, extends the catalyst's lifespan, and improves the selectivity of the catalyst for the synthesis of sec-butyl acetate.

This application relates to the field of marine-drifted polystyrene foam remediation technology, specifically disclosing a composite solvent and method for dissolving marine-drifted polystyrene foam. The composite solvent comprises the following components by mass percentage: 70%–79% main solvent, 12%–20% demulsifier, 6%–9% water-soluble shielding salt additive, and 1%–3% amphiphilic encapsulating agent; the main solvent is a mixture of sec-butyl acetate and isoamyl 2-methylbutyrate. The main solvent rapidly dissolves polystyrene, the demulsifier prevents the main solvent from emulsifying upon contact with water, the shielding salt additive complexes salt ions and enters the aqueous phase to prevent salt ions from mixing into the polystyrene, and the encapsulating agent encapsulates solid impurities and enters the aqueous phase to prevent solid impurities from mixing into the polystyrene. The synergistic effect of the four components allows the composite solvent to directly treat marine-drifted polystyrene foam with high water and high salt content, and the recycled material meets product performance requirements.