63results about How to "Increase acid value" patented technology

A fire resisting polyether is prepared from cyanamine trimers by: mixing and stirring cyanamine solids and formaldehyde, heating to 80-100deg.C,reacting for 5-30 minutes, adding alcohol amine and agitating, reacting 30-180 minutes to produce cyanamine trimer solution, making the solution mol ratio of cyanamine trimer :formaldehyde :alcohol amine being = 1:3:2;then, mixing cyanamine trimer solution gotten said above with polyether polyol, Stirring for 1-15 minutes, adding isocyanate ester, stirring 10-60 for minutes, cooling to 5-35deg.C, evacuating to vacuum at -0.2--0.1 MPa and at 90-120deg.C conditions, and removing residual monomers to get fire-resisting polyether. The products have high oxygen index, without containing halogen, phosphorus, antimony, etc, good fluidity, low acid value, less water content, little smoking, good uniformity and mechanics intensity, improved fire resisting effect.

The invention provides a grease composition for frying; the grease composition contains a fully hydrogenated palm oil intermediate fraction. The invention also relates to a preparation method of the grease composition for frying and a method of improving the frying performance of frying oil; the methods include the step of mixing the fully hydrogenated palm oil intermediate fraction and the frying oil. The invention also includes a use of the fully hydrogenated palm oil intermediate fraction in preparation of the grease composition for frying or improvement of the frying performance of the frying oil. The grease composition for frying does not have a health problem of trans-fatty acids, the frying stability is markedly improved, the oil absorption rate of fried products is significantly reduced, and color, luster, brittleness, flavor and greasy feeling are all improved.

The invention discloses a low-temperature spread jet nitrogen charge refreshing method for maize germ oil. The method specifically comprises the following steps of: before oil is canned and stored, extending a nitrogen outlet of the conventional nitrogen charge pipeline and inserting the nitrogen outlet into oil liquid, and arranging a nitrogen spread injector made of a cellular material at the outlet of the nitrogen pipeline to ensure that the nitrogen passes through the spread injector to form tiny airflow to be mixed with the oil liquid to form turbulent mixing, so that oxygen mixed with and dissolved in the oil is removed and the aim of preventing the maize oil from being oxidized and deteriorated is fulfilled. The oxygen content of the maize germ oil processed by the nitrogen charge refreshing method is less than 0.008 percent; and the oxygen content of the maize germ oil processed by the conventional nitrogen charge covering method is 0.3 percent.

The invention discloses a compound antioxidant for improving the stability of frying oil and fried food and a preparation method thereof. Through the synergistic effect of all substances of a main antioxidant and the synergistic effect of an auxiliary antioxidant, the increase of acid value, polar components and carbonyl value caused by thermal oxidation reaction in the frying oil can be inhibited, and the growth of the polar component caused by the polymerization reaction is also inhibited; and the peroxide value and the malondialdehyde content increase rate during the storage process of the fried food are reduced, the generation of the peculiar smell such as rancidity is inhibited, the oxidation stability of the frying oil can be effectively improved, and the antioxidant effect can be continuously performed in the fried food along with the carrying of the oil so as to prolong the shelf life of the fried food.

The invention discloses a hotpot condiment capable of effectively preventing grease oxidation. The hotpot condiment capable of effectively preventing grease oxidation is not added with any spice essence, antioxidant and preservative, and is heavy in barbecue flavor, obvious in beef flavor, strong in oxidation resistance, and low in peroxide value and acid value, and the quality guarantee period is as along as 15-18 months. Especially, due to the scientific compounding of the bechamel, not only can the taste and flavor of hotpot be improved, and can the oxidation resistance, bacterial inhibition and pharmaclogical property of the hotpot condiment be enhanced, but also comprehensive flavor substances of food materials in a barbecue state are collected, so that the hotpot condiment has heavy and attractive distinctive barbecue flavor, and organic fusion of barbecue flavor and the hotpot condiment is initiated; meanwhile, by virtue of scientific compounding of a base sauce and compound enzyme, while special flavor of beef is obtained, the cholesterol content of the hotpot condiment is reduced, and a new functional substance cholest-4olefine-3ketone is generated, so that the possibility that cholesterol generates carcinogens at a high temperature is completely eradicated, and therefore, a new shortcut for preparing a hotpot condiment with functional distinctive flavor is explored.

The invention discloses refrigerator oil, a refrigeration compressor and a refrigeration compressor system. Refrigerants adopted by the refrigeration compressor are selected from components of the HCs group. The refrigerator oil comprises alkyl benzene, wherein the distillation range of the alkyl benzene comprises an initial distillation point ranging from 250 DEG C to 310 DEG C and a final distillation point ranging from 470 DEG C to 540 DEG C. The refrigerator oil has the good advantages that the viscosity is low, the flash point is high, the intersolubility with the refrigerants is good, the acid value is low, and the chroma is excellent, so that when the refrigerator oil is used for the refrigeration compressor and the system thereof, good heat stability and chemical stability are achieved, and the energy consumption is low.

The invention discloses a rotary oil filtering equipment, which is mainly used for filtering oil for frying food such as meat, aquatic products, vegetables and fruits in food processing factories. The equipment comprises a filter drum, a slag removing device, a circulating system and a machine body, wherein the filter drum is arranged on the filter drum; the slag removing device is arranged on the machine body and on one side of the filter drum; an air knife on the slag removing device is arranged on the filter drum; the circulating system is arranged on the end of the filter drum; and a suction circulating pump is connected with the filter drum through an oil inlet pipe. The equipment of the invention can completely discharge the oil slag filtered out to radically separate the oil slag and food frying oil and has the advantages of continuous operation, low operation cost, simple operation, convenient cleaning, low fault rate, safe and reliable use and the lie.

The invention relates to a phosphorus-nitrogen-boron synergistic efficient flame retardant flexible curing agent and a synthesis method thereof. The curing agent comprises the following components: 5to 16.7 parts of polyhydric alcohol, 18.7 to 42.5 parts of a phosphorus-nitrogen reactive flame retardant, 3.7 to 14.3 parts of a boron reactive flame retardant, 28 to 39 parts of polyatomic acid, 0.03 to 0.25 part of a catalyst, and 8 to 32 parts of an end-capping reagent; the acid value of the curing agent is 50 to 200 mgKOH/g; the melt viscosity is 800 to 7000 mPa.s/180 DEG C; the softening point is 60 to 125 DEG C; the P content is 2.7 to 6.4 wt%%; the N content is 1.2 to 2.9 wt%; the B content is 2 to 8 wt%. The existence of phosphorus, nitrogen and boron flame retardant elements and flexible chain ensures that the curing agent has excellent flame retardant efficiency, flame retardant durability and flexibility.

The invention discloses a processing method of sesame oil. The processing method comprises the following steps: adding sesame into an aqueous solution of sodium hydroxide for soaking, washing, peeling, drying and carrying out microwave processing to obtain pretreated sesame; adding the pretreated sesame into a hydraulic oil press, and carrying out first-time squeezing to obtain first-time squeezedsesame oil and squeezed sesame-seed cakes; adding the sesame-seed cakes into the hydraulic oil press, and carrying out second-time squeezing to obtain second-time squeezed sesame oil; mixing the first-time squeezed sesame oil with the second-time squeezed sesame oil to obtain crude oil; carrying out air drying on radix glycyrrhizae, fructus momordicae, cortex eucommiae and garlic stems and leaves, crushing, and carrying out microwave processing and CO2 supercritical extraction in sequence to obtain a plant extract; adding the plant extract, resveratrol and organic acid into the crude oil, decoloring, standing and filtering to obtain discolored sesame oil; cooling the discolored sesame oil and then adding diatomite, standing and filtering. The processing method of the sesame oil, providedby the invention, is simple in process and high in oil yield, facilitates industrialization, and retains protein in the sesame-seed cakes; the obtained sesame oil has the advantages of light color, high transparency and good quality.

The invention relates to a diesel anti-wear agent with low cost and excellent anti-wear effect. The diesel anti-wear agent has the characteristics of low acid value, good low-temperature storage performance, lubricating property and the like. The ester diesel anti-wear agent provided by the invention consists of higher fatty acid, polyol, a catalyst, a water carrying agent and a small-molecular alcohol solvent. The preparation method comprises the following steps: under the protection of nitrogen, adding the higher fatty acid and the polyol into a reaction kettle according to a certain proportion, adding the catalyst and the water carrying agent, carrying out heating to 80-130 DEG C under mechanical stirring, carrying out a reaction for 4-6 hours, then adding the small-molecular alcohol solvent when the temperature is reduced to 30-60 DEG C, then carrying out heating to 90-120 DEG C, carrying out a reaction for 2 hours, carrying out vacuum dehydration on the reaction system for 30-60 minutes after the reaction is finished, and filtering and recycling the catalyst for reuse. The diesel anti-wear agent related to by the invention has a simple and efficient synthetic method, is environmentally friendly, and has strong controllability of process parameters.

The invention discloses a potting wax for a capacitor, belonging to the technical field of capacitors. The potting wax is prepared from the following substances: paraffin wax, a composite filling material, coumarone resin, C-5 petroleum resin, terpene resin, olive oil, peanut oil, polyisoprene, sodium octadecyl sulfonate, beeswax, sodium carboxymethylcellulose, sodium alginate, pentaerythritol, calcium stearate and barium stearate. The potting wax eventually prepared in the invention has excellent electrical properties, outstanding resistance to oxidation and low-temperature cracking, and goodmoisture resistance, fluidity and temperature resistance, ensures the stability and service life of the capacitor, and is high in use value.

The invention provides a fresh keeping method for preserved meat sliced products based on synergy of pulse glare and ultraviolet irradiation. The fresh keeping method comprises the following steps ofplacing the preserved meat sliced products under pulse glare and ultraviolet rays for irradiation at the same time, and performing vacuum packing on the irradiated preserved meat sliced products, wherein the irradiation time of front sides and rear sides of the preserved meat sliced products is 1-30min, the flash irradiation frequency of pulse is 1-10 times/s, the single-time energy of the pulse is 5-20J, the intensity of the flash irradiation energy of the pulse is 5-20J/cm<2>, the energy of the ultraviolet rays is 15-25w, the wave length of the ultraviolet rays is 240-260nm, and the intensity of the ultraviolet rays is 80-120uw/cm<2>. The sterilizing rate of the fresh keeping method through pulse glare and ultraviolet synergy treatment is increased to 96.6% than that of a fresh keeping method through single use of ultraviolet sterilization, and the sterilizing rate of the fresh keeping method through pulse glare and ultraviolet synergy treatment is increased to 95.7% than that of fresh keeping method through single use of pulse glare treatment, so that the ultraviolet irradiation and the pulse glare are jointly used for sterilization to achieve strengthened effects.

The invention belongs to the technical field of high-quality lubricant base oil, and particularly discloses a method for preparing alkyl naphthalene from mixed olefins and application of the alkyl naphthalene. The preparation method comprises the following specific steps: mixing reaction raw materials, namely mixed alpha-olefins and naphthalene, adding a solid acid catalyst and a solvent, and performing a high-temperature reaction to obtain a product. According to the invention, a plurality of mixed alpha-olefins are used for replacing an olefin with a single carbon number in a traditional process, and the alkyl naphthalene product is prepared through synergism of the catalyst and reaction conditions; and the alkyl naphthalene product is improved in the aspects of viscosity, pour point, flash point, chromaticity, acid value, water content and the like, and overcomes the technical bias that the performance of alkyl naphthalene prepared from mixed olefins in the prior art is difficult to reach the performance index of alkyl naphthalene prepared from an olefin with a single carbon number.

The invention discloses rapeseed gel oil with liver detoxifying function, made with the following components, by weight: 105-110 parts of rapeseed oil, 8-9 parts of high-purity free glycyrrhizic acid, 2-3 parts of proantho cyanidins oligomer, 9-10 parts of micro-nano graded porous diatomaceous powder, 9-10 parts of mannitol, 10-11 parts of rice bran wax, and suitable deionized water. The rapeseed gel oil is prepared through the constructed functional dispersion, rapeseed oil and the gel factor rapeseed bran wax, has good nutrition and certain liver detoxifying effect, and also has good antioxidant property and richer nutrition.

The invention discloses an edible oil vacuum preservation in-barrel bag and belongs to the technical field of edible oil preservation. The edible oil vacuum preservation in-barrel bag is composed of a double-opening type composite film bag body, a sealing cover, a piston switch, a light avoiding barrel and double-buckle rings. The double-opening type composite film bag body is provided with an oil inlet and an oil outlet. The oil inlet is provided with the sealing cover. The oil outlet is provided with the piston switch. The position of an outlet of the piston switch is sleeved with a dustproof cover. The double-opening type composite film bag body is installed in the light avoiding barrel. The sealing cover and the piston switch stretch out of the light avoiding barrel and are fixed through the double-buckle rings correspondingly. By means of the edible oil vacuum preservation in-barrel bag, the preservation cost of edible oil after the edible oil is unsealed is reduced to the minimum for families, and the problem that after bottled edible oil bought by the families is unsealed, oxidative deterioration of the edible oil is accelerated due to influences of factors of air, light, moisture, microorganisms and the like is solved.

The invention discloses sea buckthorn oil with high oxidation resistance and high stability, sea buckthorn oil powder and a preparation method thereof, and belongs to the technical field of food processing. The preparation method of the sea buckthorn oil powder comprises the following steps that sea buckthorn leaves are crushed; extracting is carried out; ultrafiltration is carried out; concentrating is carried out; drying is carried out; and the sea buckthorn leaves are added into sea buckthorn oil, are mixed with protein and polysaccharide, are homogenized to obtain sea buckthorn oil, and are subjected to spray drying to obtain the sea buckthorn oil powder. The sea buckthorn oil and sea buckthorn oil powder prepared by the method have high oxidation resistance and high stability, the increase of peroxide value and the like in the oil storage process is remarkably inhibited, the ingredients are simple and natural, and the market acceptability is high.