6 results about "Pyrethrin I" patented technology

Provided is a composition for insect pest control containing natural pyrethrin, a radical chain inhibitor, a peroxide decomposer, and a solid carrier. The pest control composition has a ratio (V4 / V1) of a natural pyrethrin transpiration rate V4 (mg / hour) after heating at 180°C for 4 hours to a natural pyrethrin transpiration rate V1 (mg / hour) after heating at 180°C for 1 hour of 0.2-1.5.

The application discloses a CTAB modified magnetic waste fungus chaff biochar adsorbent and a preparation method and application thereof in pyrethroid detection. 3+ , Fe 2+ and the fungus chaff biochar, adding an alkaline reagent to carry out a coprecipitation reaction to obtain a magnetic biochar precursor; S3, pyrolyzing the magnetic biochar precursor to obtain a magnetic biochar; S4, adding the magnetic biochar into a cetyltrimethylammonium bromide solution to carry out ultrasonic treatment, and carrying out magnetic separation to obtain an adsorbent MBC-CTAB. The application establishes a pyrethroid analysis method in water samples by taking the MBC-CTAB as the adsorbent, is favorable for utilization of the waste fungus matrix, and adopts a magnet to separate the sample solution and the MBC-CTAB, replaces complicated separation equipment, and realizes convenient and rapid separation.

The present application relates to a kind of pyrethroid pesticides solid phase microextraction adsorbent, it is characterized by 2,3,5,6-tetrafluoro-p-phenylenediamine and 2,4,6-trifluoro-1,3,5-triacetyl benzene as reactant monomer by condensation reaction obtained polymer.Its preparation process includes: solvent is put into reaction kettle, under continuous stirring, add reactant monomer mixture and catalyst, normal temperature reaction 10-15 hours, filter out solid, respectively with solvent and methanol wash after vacuum drying, obtain cluster polymer.The polymer has good adsorption selectivity to pyrethroid pesticides, can be used as the solid phase microextraction adsorbent of pyrethroid pesticides, for making solid phase microextraction probe.

This invention discloses a bamboo charcoal fiber cleaning cloth with antibacterial and antiviral functions and its preparation method, belonging to the field of functional fiber materials technology. The cleaning cloth uses bamboo charcoal fiber as the main body, combined with phosphorylated modified mulberry bark fiber. Zinc ions are used to chelate tea polyphenols and pomegranate peel tannins to form active components, which are then encapsulated in sodium alginate microcapsules and loaded into the porous structure of the fibers. Natural pyrethroid extract and β-cyclodextrin are added to achieve mite prevention and odor suppression. The preparation employs a green process of ultrasonic-assisted chelation and high-voltage electrostatic spray microcapsule preparation. This invention solves the problems of easy loss of antibacterial components and poor mechanical properties in traditional cleaning cloths. After 200 washes, the antibacterial rate remains at 95%-99%, and the tensile strength is 13.5-16.0 CN / dtex. It also has the advantages of being all-natural, residue-free, environmentally friendly, and mass-producible, making it suitable for household and medical cleaning applications.

The present invention relates to a composition which contains a synthetic pyrethroid compound and a compound represented by formula (1) (wherein R1 and R2 are the same or different and each represent a C17-C19 alkyl group), wherein the mass ratio of the synthetic pyrethroid compound to the compound represented by formula (1) is 1:0.01 to 1:20.

Provided is a composition for insect pest control containing natural pyrethrin, a radical chain inhibitor, a peroxide decomposer, and a solid carrier. The pest control composition has a ratio (V12 / V1) of a natural pyrethrin transpiration rate V12 (mg / hour) after heating at 150°C for 12 hours to a natural pyrethrin transpiration rate V1 (mg / hour) after heating at 150°C for 1 hour of 0.2-1.0.