4 results about "Chemistry" patented technology

The invention discloses a colorful acid and alkali resistant laser printing ink and a preparation method thereof. The printing ink is composed of the following components in parts by weight: 0 to 30 parts of butanone, 10 to 30 parts of isopropanol, 2 to 6 parts of curing agent, 10 to 15 parts of pigment, and 10 to 30 parts of glycidyl ether epoxy resin. The glycidyl ether epoxy resin is adopted to produce the printing ink, aliphatic polyamine is further chosen as the curing agent, the acid and alkali resistant performance of the printing ink is strengthened through optimizing the formula, thus the shortage that the colorful laser printing ink is lost when being mixed with acid and alkali is overcome, moreover, the color of the laser printing product is more abundant, and the patterns are more clear.

The invention discloses a preparation method of 17[alpha]-hydroxyprogesterone, wherein the preparation method comprises the steps: refining: step 1, dissolving 1 W of a crude product into a mixed solution of 4-5 V dichloromethane and 6-8 V ethanol, and heating to dissolve the crude product; step 2, weighing activated carbon exceeding a preset amount, then putting the activated carbon into a drying device for drying, controlling the drying temperature to be 60-85 DEG C, and controlling the drying time to be 10-15 minutes; and step 3, taking out the activated carbon dried in the step 2, and then placing the activated carbon in a grinding device for fine grinding. According to the scheme, activated carbon in the refining process in an original scheme is finely processed and then added, so that the reaction rate is effectively increased, the time of reflux decoloration is shortened, large-scale production and processing are facilitated, and the production cost is further reduced.

The invention relates to a bactericidal composition containing fluxapyroxad and thiediazole copper. The bacterial composition is compounded from fluxapyroxad and thiediazole copper in a binary mode, wherein a mass ratio of fluxapyroxad to thiediazole copper is (1-50) to (50-1); a mass fraction of fluxapyroxad and thiediazole in the preparation is 1%-80%, and the rest of the preparation is auxiliary components which are allowed to use and are acceptable in a pesticide. A dosage form of the bactericidal composition is missible oil, a suspending agent, wettable powder, a water dispersible granule, emulsion in water, microemulsion, a granule and a micro-capsule. The bactericidal composition is mainly used for controlling plant gray mold, peronospora and phytophthora germs.

The invention discloses a low-volume spray with hexythiazox and relates to pesticide. The low-volume spray comprises, by mass, 1-10% of hexythiazox, 5-15% of tea saponin and the balance water. During preparing, the water and the tea saponin are added into a blending kettle to be mixed evenly, the hexythiazox is added and fully disperses in the mixture of the water and the tea saponin, a sand mill is used for conducting milling, sampling is conducted, quality is detected, and filling and packaging are conducted. The water and the natural tea saponin serve as carriers, so the spray is safe to people and livestock and environmentally friendly and does not produce phytotoxicity to crops. The formula is simple, the water serves as the carrier, cost is low, and the cost performance is high. The amount of water for diluting the spray is small, and the spray is especially suitable for being sprayed in the dried and high mountainous water-deficient areas. The spray can be used for low-volume and ultralow-volume spraying, the work efficiency of the spray is higher than that of common spraying, and the labor cost is saved. The dripping loss of the pesticide is small, the pesticide utilization rate is high, and the environment pollution is reduced.