8 results about "Peroxyformic acid" patented technology

A method for oxidative brightening and whitening of a mined mineral is provided. The mined mineral to be brightened may be discolored kaolin clay, such as gray clay. The inventive method comprises adding to an aqueous slurry of a mined mineral to be brightened an oxidizing solution comprising a peroxyacid, such as performic acid and recovering bleached mineral of improved brightness, color and / or improved purity compared to the mineral to be brightened.

The application discloses a preparation method of epoxidized styrene-butadiene latex and epoxidized styrene-butadiene rubber and relates to the technical field of styrene-butadiene rubber epoxidation.The preparation method of the epoxidized styrene-butadiene latex uses a sulfonic acid type emulsifier and a non-ionic emulsifier as stabilizers of the styrene-butadiene latex.It is found for the first time that the use of the sulfonic acid type emulsifier and the non-ionic emulsifier as the stabilizers can not only improve the epoxidation rate of the styrene-butadiene rubber but also maintain the stability of the latex system in the process of synthesizing the epoxidized styrene-butadiene rubber.The sulfonic acid type emulsifier as an acidic surfactant can act as a catalyst in the latex epoxidation process, improve the generation efficiency and reaction rate of peroxyformic acid on the surface of the latex particles and rapidly prepare the epoxidized styrene-butadiene rubber.

The present invention relates generally to peroxyformic acid forming compositions, methods for forming peroxyformic acid, preferably in situ, using the peroxyformic acid forming compositions. The present invention also relates to the peroxyformic acid formed by the above compositions and methods. The present invention further relates to the uses of the peroxyformic acid, preferably in situ, for treating a surface or a target. The present invention further relates to methods for treating a biofilm using peroxyformic acid, including peroxyformic acid generated in situ.

The invention relates to a preparation method of a hydrophobic bio-based waterborne polyurethane coating, and belongs to a preparation method of an organic functional coating. According to the method, renewable non-grain plant oil-jatropha curcas oil (JO) is taken as a raw material, a clean oxidation process is adopted, and the jatropha curcas oil is subjected to green oxidation treatment by utilizing peroxyformic acid generated by formic acid and hydrogen peroxide in situ, so that the epoxy jatropha curcas oil (EJO) is prepared. Then, through a green nucleophilic addition reaction, octadecylamine (ODA) is used for carrying out solvent-free modification on the epoxy jatropha curcas oil, and the structure-controllable functionalized jatropha curcas oil-based polyol (o-JOL) is obtained. The functional polyol reacts with isophorone diisocyanate (IPDI) to prepare a jatropha curcas oil-based polyurethane prepolymer, and then the prepolymer is dispersed in a water phase through a high-speed dispersion technology to obtain the stable bio-based waterborne polyurethane dispersion (JPU). According to the preparation method, no harmful by-product is generated in the whole reaction process, and greenization and no pollution in the whole process from raw materials to products are realized.

The invention relates to the technical field of chemical production, in particular to a preparation method of 1, 2-octylene glycol, the preparation method comprises the steps of oxidation ring-opening esterification reaction, saponification hydrolysis reaction and post-treatment and refining, and an air flotation synergistic layering device comprises a tank body, a central shaft, a pre-filtering unit, an air flotation unit and a driving mechanism; the central shaft is vertically mounted in the tank body, and the top end and the bottom end of the central shaft both penetrate and extend to the outside of the tank body; the center shaft is rotationally connected with the top of the tank body, and a rotating seat fixedly sleeves the bottom end of the center shaft and is rotationally connected with the bottom of the tank body; the driving mechanism is arranged at the top of the tank and used for driving the center shaft to rotate. By accurately controlling the dripping rate of hydrogen peroxide, the reaction temperature and the effective oxygen molar ratio, side reactions such as violent decomposition and over-oxidation of peroxyformic acid are inhibited, and the selectivity and safety of the reaction are improved; and rectification is carried out under the conditions of high vacuum degree and specific tower kettle temperature, so that high-boiling-point impurities can be efficiently separated out, and a high-purity target product can be obtained.

Peroxyformic acid compositions for removal of biofilm growth and other contaminants and impurities from industrial processing hard surfaces are disclosed. In particular, peroxyformic acid compositions may be dosed on site and / or generated in situ for the reduction and prevention of biofilms on the hard surfaces. Methods of employing the peroxyformic acid compositions for removal of biofilm growth and other impurities such as aldehydes and alcohols from industrial CO2 effluent are also disclosed which beneficially provide ambient biofilm control and break down more rapidly than other peracids, allowing for extended runs between CIP cleaning, including a reduction and / or elimination of cleaning of the scrubbers and other industrial surfaces.

There are provided methods of treating edible matter comprising applying a composition comprising performic acid to the edible matter or a substrate therefor. Other embodiments are also disclosed.

There are provided methods of treating edible matter comprising applying a composition comprising performic acid to the edible matter or a substrate therefor. Other embodiments are also disclosed.