5 results about "Butanone" patented technology

The invention discloses a method for preparing high-resilience thermoplastic polyurethane foamed particles and a molded body thereof. Thermoplastic polyurethane particles are placed in an autoclave, injected high-pressure mixed fluid is one or two of CO2, N2, HFC and HCFC, one or two of chloroform, ethanol, methanol, acetone, anone, butanone, pyridine, N-methyl pyrrolidone, N,N-dimethylformamide and N,N-dimethyl acetamide serve as an organic cosolvent, and the high-pressure mixed fluid is enabled to be in a saturated state in the thermoplastic polyurethane particles and then is placed in hot air for foaming, thereby obtaining the thermoplastic polyurethane foamed particles, of which foamed pore structures are uniform and are closed-pore structures. The thermoplastic polyurethane foamed particle molded body, which is light in weight, high in resilience and controllable in shape size and has good mechanical properties, can be obtained through injecting the thermoplastic polyurethane foamed particles in a mold and adjusting mold pressing temperature and pressure so as to soften heated surfaces of the foamed particles.

The invention relates to a method for preparing a chloroprene rubber adhesive agent. The current products contain a large amount of methylbenzene and are poisonous. The invention comprises the following steps: firstly adding the chloroprene rubber and chlorinated polyethylene into a mixed solution (the compositions are 120# solvent oil, acetic ether, butanone, acetone and methyl carbonate) and mixing; after being entirely dissolved, filling nitrogen into the reactor; then adding methyl methacrylate and vinyl acetate and heating up to 80-100 DEG C; adding benzoyl peroxide to initiate a polymerization reaction; after 2-3 hours of the polymerization reaction, adding acroleic acid and adding additional benzoyl peroxide to continue reacting for 1-2 hours; after that, stopping the filling of the nitrogen and cooling to 30-50 DEG C; then adding 2,6-ditertiary butyl-p-cresol, mixing and discharging to obtain the chloroprene rubber adhesive agent. Therefore, the chloroprene rubber adhesive agent prepared by the method of the invention is environmental-friendly and has higher bonding strength to EVA soles. The method has the advantages of simple process and can realize large-scale production.

The invention discloses a setting agent used after wool stretch and refinement. The setting agent is characterized by comprising, by weight parts, 3-12 parts of trimethylolmelamine, 0.09-0.8 part of boron fluoride, 1.2-2 parts of vinyl chloride-vinyl acetate resin, 4-8 parts of butanone, 6-12 parts of dicumyl peroxide, 4-6 parts of polystyrene foam plastics and 100-120 parts of water. According tothe setting agent, wool which is stretched and refined can be quickly oxidized, and the goal of quick forming is achieved.

The invention discloses a method for improving corrosion resistance of vinyl resin, and belongs to the technical field of high polymer materials. Adding vinyl resin into the MXene nanosheet solution, and evaporating the solvent to dryness; and then sequentially adding a cobalt iso-octoate accelerant and a butanone peroxide initiator, defoaming, standing for curing, and then heating. The corrosion resistance of the MXene nanosheet modified vinyl resin is utilized, and the mechanism is as follows: after the nanosheet is combined with the resin, the isolation effect of a resin coating on corrosive liquid is improved, the hydrophobicity of the resin coating is effectively improved, and meanwhile, the isolation effect of the resin coating on corrosive ions can be effectively improved after modification; the two-dimensional MXene nanosheet is used for modifying the corrosion resistance of the vinyl resin for the first time, the preparation process is simple, the addition amount of the nanosheet is small, and the corrosion resistance of the vinyl resin can be well improved.

The application of the invention provides a resin catalyst for synthesis and preparation of ethylene glycol tertiary butyl ether and a modification method thereof. The resin catalyst for synthesis and preparation of ethylene glycol tertiary butyl ether is obtained by modification treatment of a polystyrene hydrogen-type cationic resin catalyst and purification treatment. The preparation of the resin catalyst specifically comprises the following steps: pouring a dry polystyrene hydrogen-type cationic resin catalyst into acetone or butanone or mixed liquor of acetone and butanone, stirring and reacting for 8-10 h in a hydrogen chloride gas environment at the temperature of 70-80 DEG C, filtering and carrying out purification treatment. The resin catalyst in the technical scheme has high catalytic activity and selectivity when used as a catalyst for etherification preparation of ethylene glycol tertiary butyl ether.