52results about How to "Mild handling" patented technology

The invention provides a dyeing process of nylon fiber. The dyeing process comprises the following steps: pretreatment, presetting, dyeing soaping, color fixing, after finishing, drying, setting, calendering and winding. The dyeing process provided by the invention has the advantages that in the dyeing procedure, disperse dyes and acidic dyes are used for carrying out dyeing according to the own property of the nylon fiber, so that the dyeing effect is improved; the soaping and color-fixing processes are added, so that the dyeing firmness is good; in the color fixing process, environment-friendly formaldehyde-free TCD-R is adopted, and the fiber is dried in a step-by-step manner after color fixation, so that the firmness of the fiber is greatly improved; the after-finishing process is added, so that the color firmness and softness of the fabrics are improved and increased, the roughness of the fabrics is reduced, and further the fabrics are fluffy and elastic.

The invention discloses a method for removing water from an ethyl acetate and butanone mixed solvent. The method comprises a step of adding a drying agent into a water-containing mixture of ethyl acetate and butanone to remove water, wherein the drying agent is solid calcium oxide in an amount which is 12 to 25 percent of the weight of the water-containing mixture of the ethyl acetate and the butanone. A small amount of water is removed from the water-containing mixture of the ethyl acetate and the butanone by a drying method; the method is easy to operate, time-saving and labor-saving; the drying agent is the calcium oxide and has low price; the processing process is mild without danger; and the posttreatment process is simple, namely a kettle can be directly washed with deionized water and can also be properly washed with diluted hydrochloric acid. By the method, production cost is greatly reduced; the treatment effect is good; the water content of the treated mixed solvent can be reduced to below 0.05 percent; the effect is remarkable; and the actual application requirement is met.

The invention discloses a decoloration method of silkworm chrysalis proteolysis antihypertensive peptide, which comprises the steps of adjusting the pH value of the silkworm chrysalis proteolysis antihypertensive peptide to 6-9; adding a mixture of bentonite, activated clay and alkaline calcium bentonite as a decoloration agent, wherein the mass volume ratio of the decoloration agent to the silkworm chrysalis proteolysis antihypertensive peptide is 10-45g / L; performing ultrasonic oscillation decoloration for 15-30 minutes at 30-45 DEG C; performing centrifugal separation, wherein the obtained supernate is the silkworm chrysalis proteolysis antihypertensive peptide after decoloration treatment. According to the method disclosed by the invention, by adopting the mixture of bentonite, activated clay and alkaline calcium bentonite as the decoloration agent, a relatively high decoloration rate is guaranteed, and the antihypertensive inhibition activity (ACE inhibition activity) is effectively maintained; moreover, the method is simple and easy to operate, has mild treatment processes, and can be widely applied to the production processes of the silkworm chrysalis polypeptide and other active peptides.

The invention discloses a method for producing edible food packaging paper with soybean hull as a raw material. The method comprises the following steps: the soybean hulls are subject to superfine comminution, are treated by pressurization for 20 minutes to 2 hours under the pressure of between 130 and 320kPa, and are cooled; an enzymatic reaction is performed under the conditions that the mass concentration of soybean hull powder is between 1 and 25 percent, the mass ratio of cellulose to the soybean hull powder is between 0.1 to 1 and 10 to 1, the temperature is between 25 and 70 DEG C, andthe rotating speed is between 50 and 350rpm; the reaction is terminated when the hydrolysis degree of the reaction reaches between 5 and 20 percent; a filtrate is vacuum concentrated and decolorized by hydrogen peroxide, and then a food thickener and a food plasticizer are added for stirring evenly; the ultrasonic degassing is performed for 30 to 120 minutes after the beating; the filtrate is placed into a mold for molding; and the edible food packaging paper is obtained through drying at a temperature of between 55 and 70 DEG C. The method has green raw material and chloride-free environment-friendly process, has no discharge of acid liquids or alkaline liquids, provides a new approach for the utilization of high added values of biomass resources, and also provides broad prospect for thedevelopment of special paper.

The invention provides a high-alkali-resistance mild-performance safe and environment-friendly textile scouring agent. The textile scouring agent is prepared from the following components in percentage by weight: 20 to 25% of alcohol alkoxylate, 15 to 25% of alkyl glycoside, 10 to 15% of ethoxy alkyl sodium sulfate, 5% of ethylene glycol monobutyl ether, 2 to 4% of organic solvents, 0.2 to 0.8% of edetic acid, 0.5 to 1.0% of defoaming agents, and 20 to 45% of water. According to the textile scouring agent, the alcohol alkoxylate with high penetration, the alkyl glycoside with a mild performance, and the ethoxy alkyl sodium sulfate which serves as an anionic surfactant are used as active matter raw materials which almost do not irritate the skin and damage cotton, hemp, silk, leather and other high-level fabrics; the formula is basically free of harmful substance residue, high in penetration, high in cleaning capacity, and outstanding in detergency capacity, and the hand feel of a processed fabric is good.

The invention discloses a sludge pretreatment method based on a sulfonic acid porphyrin iron catalyst Fenton-like system, comprising the following steps: mixing the sulfonic acid porphyrin iron catalyst, methanol and hydrogen peroxide solution, stirring, and mixing the obtained The liquid is mixed with the sludge for hydrolysis treatment to complete the pretreatment of the sludge. The present invention is based on the sludge pretreatment method of the sulfonic acid porphyrin iron catalyst Fenton system, by first mixing and stirring the sulfonic acid porphyrin iron catalyst, methanol and hydrogen peroxide solution to generate a mixed solution containing high-valent iron species , and then mixed with sludge, using high-valent iron species to achieve effective treatment of sludge, has the advantages of low catalyst and oxidant consumption, mild reaction conditions, high treatment efficiency, good treatment effect, and good adaptability. The effect of resource utilization is of great significance, with high use value and good application prospect.