79results about How to "Easy to separate and remove" patented technology

A method of performing an osteotomy including the steps of: providing a guide assembly; placing the guide assembly in operative relationship to a bone to be cut so that the guide assembly defines first and second guide edges that are in fixed relationship to each other to each guide movement of a cutting tool; guiding the cutting tool along each of the first and second guide edges to produce first and second cut lines in the bone to facilitate separation of a fragment of the bone from between first and second bone surfaces formed respectively at the first and second cut lines; separating the bone fragment so that a gap with a first width is formed between the first and second bone surfaces; and changing the width of the gap to be less than the first width.

The invention relates to a method for synchronously preparing biodiesel and glycerol carbonate under the acceleration action of methanol, which comprises the following steps: adding natural grease, dimethyl carbonate and methanol into a reaction kettle, adding alkali into the reaction kettle while stirring, heating while stirring, cooling to room temperature, filtering the reaction product in the reaction kettle, and washing with dimethyl carbonate until the filter residue is white, thereby obtaining a filtrate; evaporating the filtrate to remove excessive dimethyl carbonate and methanol under reduced pressure to obtain a light yellow liquid which is a biodiesel crude product; extracting the biodiesel crude product with methanol 2-3 times, wherein the residue is purified biodiesel; and merging the methanol solution, and evaporating to remove methanol to obtain the glycerol carbonate. The invention solves the problem of glycerol residues in the traditional biodiesel production process, and obtains the glycerol carbonate with high added value, thereby being beneficial to upgrading the biodiesel preparation technique; and the invention enhances the economic benefit of the biodiesel industry, and has the advantages of lower technical difficulty and lower processing cost.

The invention provides a process for synthesizing amidoalkylalkoxysilane. Carboxylate and aminoalkylalkoxysilane are used as raw materials for heating and reflux reaction. If necessary, sodium alkoxide can be added as a catalyst to make amidation reaction between ester and amino group to generate amidoalkylalkoxysilane target product and by-products alcohol. After the reaction is completed, use a small amount of chlorosilane to neutralize the sodium alkoxide catalyst, then distill under normal pressure to remove alcohols and other low boilers, and then distill under reduced pressure to remove unreacted high boiling point raw materials. The conversion rate of the target product can reach more than 90%, and the by-product alcohol in the process will not hydrolyze the alkoxy silicon groups in the raw materials and products. The target product can also be further purified by rectification, and can be used as a coupling agent, a crosslinking agent, or a monomer for synthesizing silicone resin.

A microorganism detection method that: is highly versatile, being applicable to both a test for specified microorganisms and a microbial enumeration test using the same test conditions for Kampo extract preparations and crude drugs containing a wide variety of antimicrobial substances; makes it possible to reduce the impact of antimicrobial substances in a test sample effectively; and allows the detection of target microorganisms with a high degree of precision. Said method, which is used to detect microorganisms in a test sample that exhibits antimicrobial activity, is characterized by having a step in which a liquid sample containing a test sample that exhibits antimicrobial activity is prepared and a step in which target microorganisms are cultured in a culture medium. Said method is also characterized in that a (meth)acrylic-acid-ester synthetic adsorbent is made to act on the liquid sample and / or the culture medium.

The invention relates to a method for synchronously preparing biodiesel and glycerol carbonate by using alkali-earth oxide as a catalyst, which comprises the following steps: adding natural grease, dimethyl carbonate and methanol into a reaction kettle, adding solid alkali powder into the reaction kettle while stirring, heating while stirring, cooling to room temperature, filtering the reaction product, and washing with dimethyl carbonate until the filter residue is white, thereby obtaining a filtrate; evaporating the filtrate to remove excessive dimethyl carbonate and methanol under reduced pressure to obtain a light yellow liquid which is a biodiesel crude product; extracting the biodiesel crude product with equal volume of methanol 2-4 times, wherein the residue is purified biodiesel; and merging the methanol solutions, and evaporating to remove methanol to obtain the glycerol carbonate. The calcium oxide used as the catalyst has the advantages of low price and high catalytic activity; the calcium oxide has lower solubility in organic solvents than other alkaline catalysts, and thus, can be easily removed by filtration separation after reaction; and thus, the invention has the advantages of lower technical difficulty and lower processing cost.