6 results about "Starch Microspheres" patented technology

This invention discloses a method for preparing UV-resistant modified starch-based composite materials and their application in pesticides, belonging to the field of pesticide technology. The method involves synthesizing UV-resistant mesoporous nanospheres from zinc and aluminum salts using a hydrothermal method, followed by the preparation of photoresponsive modified powder. The UV-resistant mesoporous nanospheres and the photoresponsive modified powder are then combined via a grafting method to obtain photoresponsive UV-resistant mesoporous nanospheres. Subsequently, under alkaline conditions, the photoresponsive UV-resistant mesoporous nanospheres are firmly deposited on the surface of starch microspheres prepared from corn starch using dopamine oxidative self-polymerization and chemical bonding, ultimately yielding a UV-resistant modified starch-based composite material. This material exhibits high pesticide loading capacity, high encapsulation efficiency, excellent UV resistance, and photoresponsive sustained-release properties.

This invention belongs to the field of pigment technology and discloses a natural mineral-based traditional Chinese painting pigment for ceramic slabs and its preparation method. The pigment constructs a dual-synergistic system of natural mineral chemical color development and micro / nano-structured optical color development. By precisely proportioning chemically coloring minerals and layered optical minerals, it achieves a dual visual effect of warm, lustrous base color and translucent sheen in traditional Chinese painting. The introduction of natural active silica minerals allows the pigment and ceramic slab to form Si-O-M (M being metal ions in the mineral) covalent bonds in situ during firing, achieving integrated fusion. A hierarchical porous structure is constructed using a natural starch microsphere template method to precisely replicate the textural effects of traditional Chinese painting on paper. The pigment preparation process includes mineral pretreatment, directional mixing, molding and coating, and two-stage firing. The entire process involves no synthetic raw materials and no wastewater discharge, making it green and environmentally friendly.

The invention provides an environment-friendly high-temperature-resistant porous starch microsphere blocking agent for drilling fluid, a method and application, raw materials comprise gelatinized porous corn starch emulsion, grafting monomers, a cross-linking agent and an initiator, the blocking agent is obtained by mixing the raw materials, the grafting monomers comprise amide monomers and temperature-resistant monomers, and the cross-linking agent comprises a cross-linking agent and an initiator. The mass ratio of the amide monomer to the temperature-resistant monomer is 1.0-3.5. According to the invention, the amide monomer and the temperature-resistant monomer are grafted and substituted on the porous corn starch, so that the obtained modified porous corn starch is uniform in particle size and good in temperature resistance and environmental protection performance, can be used as a plugging agent at a high temperature of 180 DEG C, and can ensure the environmental protection requirements of most regions on additives for drilling fluids.

This invention relates to the field of flame-retardant boards and discloses a method for preparing an intumescent flame-retardant board. The method uses an intumescent flame retardant to treat the board with flame retardancy. The carbon source of the intumescent flame retardant is nano-calcium carbonate modified starch. The nano-calcium carbonate modified starch consists of starch microspheres and a nano-calcium carbonate shell coated on the starch microspheres. Compared with ordinary starch, the nano-calcium carbonate modified starch requires less material, has a higher carbon source utilization rate, higher thermal stability, higher char formation rate, higher char formation stability, and excellent flame retardant effect.

This invention provides a microbial fertilizer composition for buffering soil acidity and its preparation method, relating to the field of microbial fertilizer technology. The microbial fertilizer composition comprises modified straw biochar, oyster shell powder, fermented straw material, microbial composite microspheres, and organic fertilizer. The modified straw biochar is obtained by treating straw biochar with acid and then mixing it with a carboxymethyl cellulose-glucosinolate solution. The microbial composite microspheres are obtained by mixing pectin-starch microspheres with fermented Lactobacillus mucilage fermentation broth and a fully gelatinized starch solution. This invention overcomes the shortcomings of existing technologies, effectively buffering soil acidity over a long period while further improving soil fertility and promoting high crop yields.

This invention discloses an N ε This paper describes the encapsulation of natural starch microspheres with fatty acyl lysine, its preparation method, and its application, belonging to the field of cosmetic technology. The method involves encapsulating natural starch microspheres with N-fatty acyl lysine. ε - Fatty acyl lysine dissolves in the presence of an acid-co-solvent to yield N ε - Acidic solution of fatty acyl lysine; slowly add N dropwise to starch gelatinization solution. ε Acidic solution of -fatty acyl lysine was added dropwise. After addition, the solution was kept warm and stirred to induce crystallization. Then, the pH and temperature were adjusted to allow for further crystallization. The precipitated crystals were separated by filtration, centrifugation for dehydration, drying, and pulverization to obtain N. ε Natural starch microspheres are encapsulated with fatty acyl lysine. These microsphere powders have excellent hydrophobic properties, good powder flowability, good powder molding properties, strong skin adhesion, and long-lasting makeup effect. They can be widely used in the fields of makeup, skin care, and daily chemical products.