32results about How to "Weak polarity" patented technology

The invention relates to a fat-soluble gardenia blue pigment and a preparation method thereof. The preparation method comprises the following steps: (1) Weighing genipin and amino acid methyl ester hydrochloride, dissolving them in ethanol, fully dissolving and shaking uniformly; 2) Put it in a water bath shaker at 40°C-70°C, and react under normal pressure at 150-220rpm in the presence of oxygen; (3) After the reaction is completed, the ethanol is removed by rotary evaporation to obtain the crude fat-soluble gardenia blue pigment; (4) Concentrate 1. Purifying crude fat-soluble gardenia blue pigment to obtain pure fat-soluble gardenia blue pigment. The fat-soluble gardenia blue pigment is a mixture, and the fat-soluble gardenia blue pigment is mainly in the form of spherical particles with a particle size of about 100 nm. Light and temperature stability are higher than water-soluble gardenia blue pigment.

The invention discloses a preparation method for a lindley eupatorium effective part and belongs to the technical field of traditional Chinese medicines and natural medicines. The method comprises the following steps: extracting lindley eupatorium with water or hydrous ethanol and adopting macro-porous resin and supercritical fluid extraction technique for acquiring lindley eupatorium terpene lactones part. The preparation method for the lindley eupatorium terpene lactones effective part is simple, no toxic reagent is used, the production process is green, safe and quick and the preparation method is suitable for large-scale production.

The present invention relates to the technical field of two-photon fluorescent probes, in particular, to the use of a two-photon fluorescent probe, which is used in cell and tissue imaging to detect lipid raft content and distribution dynamics. The probe can improve the accuracy, precision, sensitivity, and imaging resolution of lipid raft detection, and provide new ideas for further prevention and control of neurodegenerative diseases such as Alzheimer's disease and prion disease.

The invention provides a method for separating alkylphenol from crude oil. The method comprises the following steps: dissolving crude oil in a solvent and transferring the dissolved crude oil to a Florisil solid-phase extraction column; placing the column, leaching a sample onto an adsorbent in virtue of n-pentane and collecting eluate; subjecting the eluate to nitrogen-blowing concentration so as to obtain a concentrate; transferring the concentrate to an N-propyl ethylenediamine solid-phase extraction column, carrying out standing and then carrying out elution with n-pentane; discharging n-pentane in the N-propyl ethylenediamine solid-phase extraction column, flushing the lower end of the solid-phase extraction column with methanol, leaching the N-propyl ethylenediamine solid-phase extraction column with methanol and collecting methanol leacheate; and subjecting the methanol leacheate to nitrogen-blowing concentration at 50 DEG C to complete separation of alkylphenol from crude oil.The method for separating alkylphenol from crude oil in the invention is simple in operation, high in recovery and good in repeatability.

The invention provides an environmentally friendly release agent for refractory materials. The components and mass ratio of the release agent are: 80-150 parts of hydrogen-containing organosilicon monomer, 50-70 parts of polyether monomer, 2-5 parts of silphenyne monomer, 0.02-0.04 part of catalyst, 20-50 parts of plasticizer, 1-2 parts of coupling agent; the silphenyne monomer is n-dodecyltriphenylethynylsilane , n-octadecyltriphenylethynylsilane, n-tetradecyltriphenylethynylsilane, n-hexyltriphenylethynylsilane, or a mixture of two or more. The release agent has good temperature resistance, and is applicable to construction environments with relatively low temperatures in winter and relatively high temperatures in summer, and can also be applied to special environments such as high-temperature steam. Mixing environment-friendly mold release agent with waste engine oil can not only save resources, protect the environment, and reduce costs, but also has excellent mold release performance, smooth mold surface, and smooth sample surface.

The invention discloses epoxy-resin-modified polyurethane waterproof paint and a preparation method thereof. The epoxy-resin-modified polyurethane waterproof paint comprises the following components according to the parts by weight: 80-100 parts of polyether glycol, 20-40 parts of isophorone diisocyanate, 30-50 parts of an epoxy resin, 2-6 parts of hydroxy-terminated poly-dimethylsiloxane, 0.04-0.2 parts of chloroplatinic acid, 0.6-1 part of a silane coupling agent, 2-6 parts of dimethylolpropionic acid, 15-25 parts of acetone, 4-10 parts of trimethylamine, 0.02-0.5 parts of dibutyltin dilaurate, 5-10 parts of water, and 30-60 parts of inorganic filler. The preparation method comprises the following steps: S1: modifying the epoxy resin; S2: under the protection of nitrogen in 65-75 DEG C,performing a nucleophilic addition reaction of the polyether glycol; S3: in 70 DEG C, copolymerizing reaction products in the steps S1 and S2 and the dimethylolpropionic acid; and S4: neutralizing andhomogenizing. The epoxy-resin-modified polyurethane waterproof paint is capable of using the mutual crosslinking modification of polydimethylsiloxane, the epoxy resin and polyurethane, synthesizing the advantages of three parties, and improving the structure stability and the mechanical property of a coating film. The produced polyurethane waterproof paint can be tightly adhered to a non-polar base plane, and excellent in waterproof anti-penetrability performance.

The invention relates to a high-adhesion and deodorant water-based acrylate emulsion and a preparation method thereof. The main component of the high-adhesion and deodorant water-based acrylate emulsion is a modified polyacrylate whose side chain contains imidazole and its derivative groups, which has strong cohesion, good stability, and high transparency after film formation; during the synthesis process, imidazole and Its derivatives undergo an addition reaction with the residual acrylate monomers to form odorless, tasteless, non-volatile compounds with low surface tension. As a high-efficiency substrate wetting agent, it can significantly improve the wettability of the emulsion to the substrate. At the same time, it acts as an interface agent. , one end is closely connected with the substrate, and the other end is combined with the acrylate polymer containing imidazole structure to improve the adhesion of the polymer on the surface of the difficult-to-adhere substrate.

The invention discloses a heat-solidity epoxy tar material, preparing method and specific dissolving-reinforcing agent, which comprises the following steps: allocating the raw material with 100% tar, 20-40% epoxy resin, 20-40% hardener and 20-60% heat-solidity epoxy tar; blending evenly; heating to 80-90 deg.c; stirring evenly; solidifying under 100-120 deg.c for 0.5-7h; obtaining the product. The invention provides a specific dissolving-reinforcing agent of heat-solidity epoxy tar material, which contains weak-polarity high-grade fat carbon chain and strong-polarity Mannish alkaline or compound of epoxy resin and polyol.