30results about How to "Maintain whiteness" patented technology

The invention provides a modified-chitosan-containing anti-ultraviolet finishing agent for cotton fabric and anti-ultraviolet cotton fabric obtained by aid of the anti-ultraviolet finishing agent. The modified-chitosan-containing anti-ultraviolet finishing agent for the cotton fabric is a uniformly mixed solution of 3,4,5-trimethoxybenzoyl chitosan, a crosslinking agent, a penetrant and an acetic acid or lactic acid solution, wherein the crosslinking agent is organic polycarboxylic acid or amino-modified silicone oil emulsion; the penetrant is either JFC or peregal O. The anti-ultraviolet cotton fabric with anti-ultraviolet, anti-bacterial and anti-crease finishing functions is obtained through double-dip double-nip, water washing and drying, the anti-ultraviolet, anti-bacterial and anti-crease finishing functions are high in durability, the cotton fabric still maintains the original style of the fabric after finishing, the hand feel, the strength, the whiteness and the color of the cotton fabric are not affected, and the original human body affinity is maintained; the finishing agent is simple in composition and easy to prepare, and a finishing process is simple and environment-friendly.

In order to suppress color tint during display of black, chromaticity is changed when black is displayed while maintaining chromaticity when white is displayed. For this purpose, the pigment to be dispersed in a color resist is adjusted in particle size and concentration. Such adjustment is so performed that the chromaticity difference between displayed white and black becomes 0.01 or smaller in the x-y chromaticity coordinates by varying the transmissivity of color pixels during display of black. With such a structure, successfully provided is a color liquid crystal display capable of preventing color tint in displayed black, while keeping white chromaticity at the desired level.

The invention discloses an antimicrobial modified polyvinylidene fluoride membrane and a preparation method thereof and belongs to the field of polymer modification. The ion exchange is performed between silver ion and a 13X molecular sieve to obtain a silver-loaded X type molecular sieve which contains antibacterial ingredients, and then the silver-loaded X type molecular sieve and polyvinylidene fluoride are blended to prepare the antimicrobial modified polyvinylidene fluoride membrane. The silver ion antibacterial function is introduced to the polyvinylidene fluoride membrane which is modified by the method, simultaneously the hydrophilic performance of the membrane is improved by the aid of the high hydrophilicity of the molecular sieve materials, antibacterial and anti-pollution capabilities of the polyvinylidene fluoride membrane are improved by the aid of the synergistic effect of multiple aspects, the service life of the membrane is prolonged, evident inhibition effect on breeding of bacteria and microorganism can be achieved, the modified membrane maintains good physical performance and appearance, the preparation process is simple and easy to operate, the conditions are mild, and the industrialization implementation is easy.

The present invention relates to an external preparation for skin comprising a compound, such as centaureidin(5,7-dihydroxy-3,6-dimethoxy-2-(5-hydroxy-4-methoxyphenyl)-4H-1-benzopyran-4-one); 5,7-dihydroxy-3,6,8-trimethoxy-2-(3,4,5-trihydroxyphenyl)-4H-1-benzopyran-4-one; 3,5-diethoxy-6,7-dimethoxy-2-(5-ethoxy-4-methoxyphenyl)-4H-1-benzopyran-4-one; and 5,6-dihydroxy-3,7-dimethoxy-2-(5-hydroxy-2,4-dimethoxyphenyl)-4H-1-benzopyran-4-one; and/or salt thereof and 4-n-butyl resorcinol and/or a salt thereof. The present invention provides an external preparation for skin having a function as a substantial lightening cosmetic that exerts whitening action of inhibiting excessive melanin production and keeping natural-looking whiteness.

The invention discloses a method for manufacturing a high-activity silk mask by use of silkworm cocoon. The method is characterized by comprising the following steps: (1) cocoon cleaning: washing away dust and sundries on cocoon with clear water; (2) cocoon dissolving: placing the cleaned silkworm cocoon into a protease solution with the concentration of 0.1-5%, and enabling silk gum to be fully swelled and a cocoon shell to be opened; (3) cocoon stripping: pulling apart the cocoon shell to remove silkworm chrysalis; (4) film forming: sleeving the silkworm cocoon from which the silkworm chrysalis is removed on an arch-shaped die to make a silk web; (5) drying: naturally airing or drying at low temperature; and (6) punch forming. The method is short in technological process and simple to manufacture; the whole technological process is completed at low temperature without soaking in an alkali liquor or high-temperature cooking, so that the protein activity is preserved to the utmost extent, silk gum is not subject to denaturation or loss, and the manufactured mask is excellent in compactness and convenient to use.

The invention discloses a laundry liquid containing kiwifruit enzyme and plant extract and a preparation method of the laundry liquid. The laundry liquid comprises the following components by weight: 8-12% of kiwifruit enzyme, 16-22% of plant extract, 8-10% of alkyl glycoside, 0.5-1% of disodium ethylenediamine tetraacetate, 1-1.5% of hydroxyethyl cellulose, 0.2-0.3% of spice, 2-3% of sodium chloride, 1-2% of ginger juice, 0.5-1% of artemisia vulgaris liquid and the balance of purified water, wherein the plant extract is a mixture composed of sapindus mukorossi extract and gleditsia sinensis extract at a weight ratio of (5-6):(3-5). The laundry liquid containing kiwifruit enzyme and plant extract proposed by the invention is natural and free of phosphorus, fluorescent agent and bleaching agent, and has advantages of being efficient in decontamination, natural and antibacterial, safe, environmentally friendly, promoting skin wound healing, and being mild and non-irritating to skin and the like.

An ink jet recording method includes: heating a recording medium; and ejecting a white color water-based ink composition from an ink jet head to a recording medium heated in the heating of the recording medium and causing the white color water-based ink composition to adhere to the recording medium, the causing of the white color water-based ink composition to adhere is performed by performing scanning, in which the ink composition is ejected while relative positions between the ink jet head and the recording medium are changed in a scanning direction, a plurality of times, and a maximum time of the scanning performed once is equal to or greater than 0.8 seconds, and the white color water-based ink composition contains first particles that are a white color pigment and second particles that are particles of a different kind from the first particles and that are inorganic fine particles.

The invention relates to a new technology for preparing pearlescent pigment. The new technology is characterized in that titanous sulfate and/or titanyl sulfate prepared by sulfuric acid acidolysis of titanium dioxide and/or hydrated titanium dioxide are/is used as raw materials to replace a titaniferous solution prepared from titanium tetrachloride or ilmenite powder, a hydrolysis precipitation (while adding alkaline matter such as caustic soda and ammonia water, and maintaining pH) method is applied to a lamellar base material, and thickness of titanium oxide coated on the base material and product color are controlled by adjusting technological conditions; and if necessary, other metal or nonmetal hydrous oxide can be additionally coated. The invention has advantages as follows: preparation cost of the titaniferous solution is lower than preparation cost of a titanium tetrachloride aqueous solution, and purity is similar; the technology is environmentally friendly; and purity of the titaniferous solution prepared by the technology is higher than purity of a titaniferous solution prepared from ilmenite. The technology of the invention can be applied to various models of pigments which require the usage of a titanium tetrachloride aqueous solution in production and contain the pearlescent pigment to replace a titanium tetrachloride aqueous solution.

The invention provides a cleaning product containing styrene-acrylic acid-maleic anhydride copolymer. In the invention, the styrene-acrylic acid-maleic anhydride copolymer has a hydrophilic anion functional group and a hydrophobic carbon-carbon chain structure and is capable of endowing molecules with excellent hydrophilic and lipophilic properties; a styrene and acrylic acid chain has a functionof absorbing dirt; acrylic acid and maleic anhydride have electrostatic repulsion and can stably disperse the copolymer absorbing dirt in a cleaning solution, so that the copolymer can achieve an effect of resisting against dust deposition during the cleaning process. When the cleaning product provided by the invention is used for cleaning polyester fiber fabrics, an excellent effect of resistingagainst dust deposition can be achieved, the whiteness of fabrics can be maintained and the color and luster of fabrics can be protected.

Detergent compositions comprising a deoxyribonuclease (DNase) and uses of DNase in the detergent are provided. The use of DNase in the detergent provides improved whiteness and anti-redeposition effects, and may reduce the use level of conventional anti-redeposition polymers.

The invention relates to a novel process for preparing a pearlescent pigment. The novel process is characterized in that titanium sulfate and/or titanyl sulfate prepared by acidolysis of titanium dioxide and/or titanium dioxide hydrate with sulfuric acid is used as a raw material to replace titanium tetrachloride or titanium liquid prepared from ilmenite powder; a hydrolysis precipitation method (wherein alkaline substances like caustic soda and ammonia water are added at the same time to maintain a pH value) is employed for coating titanium oxide on a lamellar substrate; and process conditions are adjusted so as to control the thickness of titanium oxide on the substrate and the color of the pearlescent pigment. If needed, other metal or nonmetal hydration oxide can be coated in addition. The invention has the following advantages: titanium liquid prepared by using the process has lower cost, identical purity and environment friendliness compared with an aqueous titanium tetrachloride solution, and has higher purity compared with titanium liquid prepared from ilmenite; and with the process, the titanium liquid prepared by using the process can be used for replacing the aqueous titanium tetrachloride solution in conventional production of pearlescent pigments of various models needing the aqueous titanium tetrachloride solution.

The invention provides a carboxylic acid group-containing polymer and a preparation method thereof, and an application of the carboxylic acid group-containing polymer in concentrated laundry detergents. The polycarboxylate polymer is prepared by polymerizing (1) 30-62 wt% of a C3-C6 unsaturated carboxylic acid monomer or an alkali metal salt thereof, (2) 20-52 wt% of a C1-C30 alkyl (meth) acrylate, styrene monomer and (3) 5-18 wt% of allyl alcohol polyoxyethylene polyoxypropylene ether, and has a weight average molecular weight of 3000 or more and 50000 or less. The polymer disclosed by the invention can promote dirt to be released from a fabric and keep suspension, so that the detergency and the whiteness maintaining of the detergent are improved, wherein the applicable fabrics include fabrics made at least in part from cotton, cotton blends, polyesters, polyester blends, or combinations thereof.