161results about How to "Reduce whiteness" patented technology

The invention relates to an environment-friendly non-fraying printed label tape and a manufacturing method thereof, belonging to the technical field of label tape manufacturing. The environment-friendly non-fraying printed label tape comprises a substrate layer and a colloid layer, the thickness of the substrate layer is within 150-170 microns, and the thickness of the colloid layer is within 20-30 microns; and the colloid layer is a synthetic resin scraping layer. The manufacturing method of the environment-friendly non-fraying printed label tape sequentially comprises the steps of cloth arranging, gelatinizing and scraping, calendering and cutting, wherein the gelatinizing and scraping step is as follows: gelatinizing a piece of grey cloth, in which the gelatinizing quantity is controlled within 20-40g/m<2>, and scraping the grey cloth by a scraping machine after gelatinizing, wherein the gelatinizing formula is as follows: 80-89wt% of synthetic resin, 10-15wt% of water and 1-5wt% of thickening agent. In the invention, the manufacturing method needs low production cost; and the product has the technical effect of non-fraying and meets the 0eko-tex standard100.

The invention relates to ultra-white glass, belonging to the preparation field of glass. The preparation method of the ultra-white glass is as follows: La2(CO3)3, Ce2(CO3)3, Nd2(CO3)3, MnO2, CoO and CuSO4 are added in common float glass to perform compound clarification and decoloring, wherein under the combined action of chemical decoloring and physical decoloring, the thickness of the molten glass is 4mm, the visible light transmittance is more than 94.5% under the wavelength of 380-780nm, the whiteness is less than 0.082, the flexural strength is more than 380MPa and the microhardness is more than 8320MPa. The ultra-white glass has the advantages of higher visible light transmittance, low whiteness, high flexural strength and higher microhardness; and the quality of the white float glass can be obviously increased. The ultra-white glass can be widely used in the fields such as building glass, photovoltaic technology, experimental apparatus and the like.

The invention discloses a technique for producing octenyl succinate starch ester with low viscosity by an oxidation method, which comprises steps as follows: waxy rice starch and water are prepared to be starch milk in a reaction vessel, then the starch milk is heated to 34 DEG C to 38 DEG C, and a sodium hydroxide solution is added for adjusting the PH value between 9.3 and 9.7; sodium hypochlorite is added to carry out oxidation reaction, and the PH value and the reaction temperature are kept; sodium pyrosulfite is added to carry out reduction reaction, and a hydrochloride solution is added in the reaction process to adjust the PH value of the starch milk between 8.5 and 9.0, and the temperature is cooled to 28 DEG C to 31 DEG C, and then octenyl succinic anhydride with 2 percent to 3 percent of the total mass of absolute dry starch is added to carry out esterification reaction; and after the esterification reaction, the hydrochloride solution is added to neutralize the PH value of the starch milk between 5.5 and 6.5, and the finished product can be obtained by washing and drying the neutralized starch milk. By adopting the technique for producing the octenyl succinate starch ester with low viscosity by the oxidation method, the product is high in esterification reaction efficiency, good in emulsifying properties and high in product quality.

A particulate metal oxide having a coating layer comprising phosphate wherein the mean length of the primary particles is in the range from 50 to 90 nm, and the mean width of the primary particles is in the range from 5 to 20 nm. The metal oxide is particularly suitable for forming aqueous dispersions. The metal oxide and aqueous dispersions thereof can be used in a sunscreen product that exhibits both effective UV protection and improved transparency.

The invention relates to high-whiteness coated paper coated by using raw paper with medium whiteness, a coating method and a coating. The coating method is mainly characterized by greatly reducing the whiteness of the raw paper for producing conventional high-grade coated paper such as copper plate paper and coated white cardboards. The coating mode is a common single-side or double-side two-layer (double-coating) or multi-layer coating mode in a papermaking plant. By using the mechanical property of the raw paper, the printing property of coatings and the synergetic whitening effect between the coatings, yellowing of the raw paper is inhibited, and the whiteness of the coated paper is improved to over 86 percent so as to meet the requirements of national standards on the high-grade copper plate paper. The raw paper of the high-grade coated paper can be made by using various kinds of environment-friendly and resource-saving pulp of medium whiteness more widely, and is favorable for promoting the development of the low-carbon manufacturing technology of the pulping papermaking industry. The newly invented coated paper can substitute the traditional high-grade paper such as the copper plate paper, the coated white cardboards and the like in the fields of printing and packing.

A present sheet manufacturing apparatus, which manufactures a sheet including defibrated material and whiteness enhancer, is provided with a defibrating unit configured to defibrate a stock material that includes fibers, a whiteness enhancer feeding unit configured to feed the whiteness enhancer to the defibrated material defibrated in the defibrating unit. A feeding amount of the whiteness enhancer is changed based on whiteness information of the stock material or the defibrated material.

A tooth whitening system comprising a tooth whitening composition comprising a whitening agent and a hydrophobic polymer carrier. The tooth whitening composition is preferably substantially non-water soluble. The tooth whitening composition is applied to the surface of a tooth to be whitened in a mammal to effect whitening on the tooth surface. Methods of whitening a surface of a tooth are also provided.

The invention provides a method for improving antibacterial property of wool by a bio-enzymatic method, which belongs to the field of textile biotechnology. The method utilizes the catalysis of transglutaminase (MTG) to graft some natural compounds which contain primary amine groups and have antibacterial property onto wool to improve the antibacterial property of the wool. The method comprises the following process flows: wool pretreatment, treatment with an MTG-containing antibacterial finishing agent, washing and drying. Wool yarn or fabric treated by the method not only has improvement on the antibacterial property but also correspondingly has improvement on some other properties and particularly has great improvement in low-temperature dyeing property. Meanwhile, the method improves the strength of the wool yarn or the fabric, thereby playing a role in restoring strength. The strength-restoring function is an outstanding advantage of the method compared with other antibacterial finishing agents or antibacterial finishing processes. In addition, compared with chemical finishing, the treatment process of the method is free from pollution, healthier and friendlier to environment by adopting a bio-enzyme technique.

A method for improving flame retardance of wool by bioenzyme treatment is disclosed, belonging to the field of textile biotechnology. The invention utilizes a catalytic action of transglutaminase (MTG) to graft a type of compounds containing primary amino groups and a large number of phosphorus elements onto the wool so as to improve the flame retardance of the wool, the technological procedures comprise: pretreatment, treatment with a phosphoric finishing agent containing the MTG, water rinsing and drying. Wool yarns and fabrics treated by the inventive technology can not only be improved in the flame retardance, but also be enhanced in some other performances to a certain extent, in particularly the strength of the wool yarns and the fabrics is enhanced to play a role of powerful repair, which is outstandingly superior to other flame-retardant finishing agents or flame-retardant finishing technologies. In addition, in contrast to chemical finishing, the invention is healthier and more environmentally-friendly due to the employment of bioenzyme technique and the pollution-free treatment technology.

Provided is a white ink, including water, a water-soluble organic solvent, and a colorant including hollow resin particles, wherein the water-soluble organic solvent includes at least one of a monohydric alcohol having a boiling point of 240° C. or lower and a diol having a boiling point of 240° C. or lower, having at least one hydroxyl group bonded to an alkane chain at a site other than terminals of the alkane chain, and having 4 to 6 carbon atoms, and a content of the at least one of the monohydric alcohol and the diol is equal to or greater than 75.0% by mass of a total amount of the water-soluble organic solvent.

The invention discloses a method for preparing soluble kelp cellulose. The method includes the steps: firstly, preparing kelp dietary fibers from kelp residues by means of flocculation, decalcifying, bleaching, washing and the like; secondly, performing steam explosion to obtain insoluble kelp cellulose, then adding low-temperature cellulase into the insoluble kelp cellulose, and performing enzymolysis in water bath at the temperature of 25 DEG C-35 DEG C to obtain the soluble kelp cellulose with the content of 90.14+/-1.09wt% and the yield of 50-60%. When the soluble kelp cellulose is prepared, the low-temperature cellulase is used, enzymolysis is performed at the normal temperature, enzymolysis conditions are moderate, only macromolecules are sensitive to the cellulose, and macromolecules in kelp are easily decomposed while micromolecules are relatively stable and not easily further decomposed, so that the obtained soluble kelp cellulose is uniform in molecular weight and high in yield, cellulose content, water-holding capacity and expansibility. Moreover, the enzymolysis temperature is low, so that production energy consumption and operability are reduced.

The invention relates to high-air-permeability mixed pulp, which contains high-air-permeability straw pulp. The mixed pulp contains 10-100 percent of high-air-permeability straw pulp and 0-90 percent of other pulp by weight percent. Preferably, the weight percent of the high-air-permeability straw pulp is 30-97 percent and the weight percent of other pulp is 3-70 percent. More preferably, the weight percent of the high-air-permeability straw pulp is 51-95 percent and the weight percent of other pulp is 5-49 percent. The most preferably, the weight percent of the high-air-permeability straw pulp is 71-93 percent and the weight percent of other pulp is 7-29 percent. The other pulp is one or more of wood pulp, bamboo pulp, cotton pulp and secondary fiber. Preferably, the wood pulp and the bamboo pulp are selected. The mixed pulp has the advantages that the drainage capacity is good, the high-speed paper machine can be used during papermaking and the production efficiency is further improved.

The invention relates to an oxygenase-bath alkali-free desizing process for a polyester/cotton high-count and high-density fabric. The process sequentially comprises the following steps of: sewing and singeing the fabric; washing the fabric with three-grid hot water; washing the fabric with two-grid coldwater; padding oxidation bleaching working solution; steaming at the temperature of 102 DEG C for 50 minutes; washing the fabric with four-grid hot water; drying; and shaping, wherein in the step of padding oxidation bleaching working solution, the formula of the oxidation bleaching working solution comprises 10g/L of high-efficient scouring agent HS-120B, 65g/L of 288 dispersing agent, 5g/L of scouring enzyme 188, 5g/L of wax regent WR, 10g/L of hydrogen peroxide stabilizing agent P and 14.0 to 15.0g/L of hydrogen peroxide (wherein the concentration is 33 percent). Compared with the prior art, the desized fabric has greatly improved quality, namely the handfeel is plump; the fabric surface loss ratio is low; the fabric surface whiteness is good; and the fabric has no cotton, multiple nodes and no alkaline spots.

The invention discloses a compound type yoghurt stabilizer and a preparation method thereof, which belong to the technical field of yoghurt stabilizer preparation. The compound type yoghurt stabilizer is prepared by taking modified dietary fibers with high water holding capacity, expansibility, thickening property and adsorptivity as well as abundant grid structure as main raw materials, scientifically compounding a plant extract and protein hydrolysate which contain high-content natural antifreeze peptides, Chinse herbal medicinal extracts with cold and heat stress resistance, sodium carboxymethylcellulose, pectin, tremella polysaccharide, transglutaminase and other food raw materials and refining; the prepared compound type yoghurt stabilizer has the advantages that the quality problems about low viscosity, rough texture, poor mouthfeel, whey separating and the like in the late-stage storage process of yoghurt are solved; in addition, the viable content of lactic acid bacteria in the yoghurt is obviously improved, and the shelf life is prolonged to over twenty-one days; besides, the yoghurt is good in solidifying state, and is suitable for long-distance transportation.

A particulate metal oxide having a mean length of the primary particles in the range from 50 to 90 nm, the mean width of the primary particles in the range from 5 to 20 nm, and the median volume particle diameter of the secondary particles is less than 45 nm. The metal oxide can be used in a sunscreen product that exhibits both effective UV protection and improved transparency.

The invention relates to tourmaline negative ion powder with high performance and a coating process. The tourmaline negative ion powder comprises tourmaline, a coupling agent and a coating agent, wherein the occupied weight ratio of the tourmaline is 25-35%, the occupied weight ratio of the coupling agent is 1-3%, and the occupied weight ratio of the coating agent is 62-74%. The tourmaline negative ion powder is obtained by coating, whitening and modifying the tourmaline and can be used as stuffing powder for preparing a functional coating; and the tourmaline negative ion powder is directly doped in a water-based coating or is combined with a film forming material, pigment, an addition agent, a solvent agent and the like to prepare the functional coating. After forming the coating, the tourmaline negative ion powder can release lots of negative ions for long time, adsorbs and degrades indoor harmful gases, settle dust in the air and effectively improves indoor housing environments.

The rosin sizing agent consists of main components including modified rosin, tall oil, stearic acid, pine gum and paraffin; and supplementary material including polyethenoxy ether sulfo succinate, abietate, polymer dispersant and disinfectant. It is prepared through low pressure process with relatively high controllability and production quality stability. The sizing agent has high compatibility with calcium carbonate stuffing, high sizing effect, low production cost and less mildew produced in storage. The sizing agent is suitable for use in producing high-grade paper and paper card.

The invention discloses a high-yield natural-color wood pulp production method which comprises the following steps; boiling a wood material as a raw material by using a sulfate cooking process so as to obtain unbleached pulp, wherein the alkali amount is 15-18%, the sulfidity is 26-30%, the boiling temperature is 140-155 DEG C, and the kappa number of the unbleached pulp is 40-80; and performing oxygen delignification treatment on the unbleached pulp to remove 40-60% of lignin so as to obtain oxygen delignification pulp, wherein the alkali amount is 1-4%, the initial oxygen pressure is 0.2-0.8MPa, the temperature is less than 100 DEG C, and the kappa number of the oxygen delignification pulp is 20-35. By adopting the method, under mild reaction conditions, the use quantity of boiling chemicals is reduced, after the raw material is prepared into the pulp, the whiteness is relatively low, the Kappa number is relatively high, and the loss of carbohydrate is small, after the oxygen delignification treatment is performed, 40-60% of lignin is removed, then natural-color wood pulp which is superior to that of a conventional pulp preparing production process is obtained, the pulp yield is increased, the possibility of water closed cycle in a workshop is increased, and the production cost is greatly lowered.

The invention relates to carboxymethyl pachymaran with suitable substitution degree and a preparation method thereof, and belongs to the technical field of polymer polysaccharide preparation. The mthod comprises the steps that during the carboxymethylation modification process of pachymaran, an irradiation process is used, the proportion of reaction media is changed, and reaction temperature is regulated, thereby enhancing the efficiency of the carboxymethylation of pachymaran and the utilization rate of a raw material and an auxiliary material significantly, reducing the reaction time, and reducing the cost. The carboxymethyl pachymaran with substitution degree of about 0.7 can be obtained by the preparation method of the invention, and the product has the properties of higher antioxidant biological activity, white color and good solubility. Proved by the animal safety and toxicology evaluation test, the carboxymethyl pachymaran is classified into the safe and non-toxic level so as to be able to apply to the fields of foods, health products, feed additives and cosmetics and the like.

The invention discloses a method for producing nano calcium carbonate by microwave drying. The method is carried out according to the following steps: (1) preparing Ca(OH)2 raw refined slurry; (2) preparing boiled calcium carbonate slurry; (3) preparing an activated calcium carbonate filter cake; (4) pelletizing; (5) carrying out microwave drying; and (6) crushing and sieving to prepare a nano calcium carbonate product. A device for producing nano calcium carbonate by microwave drying comprises a pelletizer, a feeding hopper, a conveyor belt, a transmission mechanism, a tunnel type microwave drying box, a microwave generator, a discharge hopper and a moisture removal mechanism. The method and the device are adopted to produce nano calcium carbonate, so that time of drying operation in a production process of the nano calcium carbonate can be greatly shortened, the energy consumption is lowered, the agglomeration of the nano calcium carbonate is weakened and the dispersion is improved, and thus, the quality of the nano calcium carbonate is improved; the prepared nano calcium carbonate has the advantages of small grain size, low agglomeration strength, a great specific surface area, small hardness and good dispersion; and moreover, the heating time is short, so that the whiteness of the nano calcium carbonate can be improved.

The transfer film of the present invention has a temporary support and a colored layer, and the colored layer contains at least (A) a white inorganic pigment and (B) a silicone-based resin.