47results about How to "Improve color fastness to light" patented technology

The invention discloses non-yellowing polyurethane memory cotton and a preparation method thereof. The non-yellowing polyurethane memory cotton is prepared from the following raw materials in parts byweight: 50-80 parts of high activity polyether polyols, 5-40 parts of slow rebound polyether, 2-35 parts of polymer polyols, 1-10 parts of chain extender, 0.2-3 parts of foam stabilizer, 0.5-3 partsof composite catalyst, 1-4 parts of water and 30-60 parts of aliphatic series isocyanate. The non-yellowing polyurethane memory cotton is composed of selected raw materials, the content of each raw material is optimized, the high activity polyether polyols, the slow rebound polyether, the polymer polyols, the chain extender, the foam stabilizer, the composite catalyst, the water and the aliphaticseries isocyanate are selected with proper proportions, respective advantages are given full play, mutual complementation and improvement are achieved, the quality stability of products is improved, the prepared non-yellowing polyurethane memory cotton is high in color fastness to light, good in phemol yellowing resistance, high in smoke resistance, long in slow rebound recovery time and low in falling sphere rebound rate.

The invention discloses a printing process for improving color fastness to light of natural dye cotinus coggygria pigment, and belongs to the technical field of plant dyeing. The preparation method comprises the following steps: firstly preparing a cotinus coggygria pigment dye mixed solution from cotinus coggygria pigment, nanometer titanium dioxide sol and dopamine hydrochloride, and preparing original printing paste with stable viscosity in cotinus coggygria pigment dye; then preparing color paste from the cotinus coggygria pigment dye mixed solution, the original paste and a color fixing agent (color fixing agent DS1315 and polyglutamic acid are mixed according to the mass ratio of 5:1) to dye real silk fabric. The indexes such as water-resistant color fastness, rubbing-resistant colorfastness, light-resistant color fastness and leveling property of the real silk fabric can be obviously improved. A metal ion mordant and a urea color fixing agent are not used, so that the emissionof ammonia-nitrogen wastewater is remarkably reduced, and environmental protection is facilitated.

The invention discloses red sunproof active dye. The structural formula of the red sunproof active dye is shown in the description, wherein X is O or NH, Y is H or CH3, Z is H or SO3Na. Meanwhile, theinvention also discloses a preparation method of the red sunproof active dye. The preparation method comprises the following steps: adding hindered amine solution into active-dye aqueous solution, then adding potassium carbonate as an acid-binding agent, and reacting at a temperature of 40-50 DEG C; regulating pH of the obtained reaction liquid to be 1+ / -0.1 to generate precipitates; after filtering, carrying out acid pickling and drying on filter cakes and obtaining the red sunproof active dye. By adoption of the red sunproof active dye obtained by the invention, not only can the own light-resistant color fastness of the dye be improved, but also the light-resistant property of the dyed fiber can be improved.

The invention discloses a high-softness flame-retardant fabric. The high-softness flame-retardant fabric is prepared from, by weight, mixed solution aramid, flame-retardant viscose fibers, conductivefibers, copper ammonia fibers, a softening agent and a light-resistant agent. The mixed solution aramid is made from para-aramid and meta-aramid in a mass ratio of 1:(18-20) by blending. A flame-retardant viscose fiber preparation method includes steps: S1, subjecting strong viscose pulp and high-wet-modulus viscose pulp to mixed pulp feeding, impregnating, pressing, crushing, aging, yellowing andgrinding sequentially to obtain a mixed viscose fiber precursor; S2, adding zinc borate and decabromodiphenyl ethane into a ball mill, and performing mixed grinding for 1-2h until uniform dispersoidpowder is obtained; S3, subjecting the mixed viscose fiber precursor to post-dissolving, mixing, filtering, defoaming, filtering and short fiber spinning to obtain mixed viscose fibers, wherein addingtheh dispersoid powder in the step of post-dissolving according to the corresponding parts by weight to obtain flame-retardant viscose fibers. The fabric is comfortable, soft and efficient and durable in flame retardation.

The invention relates to a dyeing method of lyocell fibers. According to the dyeing method of the lyocell fibers, vegetable dye is directly added into a spinning solution of the lyocell fibers, so that the purposes of environmental protection and dyeing avoiding are achieved; and the light color fastness of the vegetable dye is improved by utilizing the natural light shielding effect and excited state electron quenching effect of graphene. Meanwhile, lanthanum nitrate or cerium nitrate and the like are used as sources of rare earth ions, and the action of the grapheme is used in cooperation, so that the vegetable dye is firmly combined to the edge of an amorphous region and even a crystallization region to form firm multi-element combination with cellulose molecules, and the color fastnessand the stability of the natural dye are improved. The method has an obvious effect on improving colored light and performance, saves the dyeing process, and is energy-saving and environment-friendly.

The invention relates to a multifunctional cotton fabric finishing agent with anti-ultraviolet rays, improved fabric light fastness, antibacterial and wrinkle resistance and a preparation method thereof. The steps of the preparation method include: preparing a water phase; preparing an oil phase; preparing an emulsion; preparation. The invention solves the compatibility problem between functional components, the finishing agent has good stability, and there is a promotion effect between functional components, polycarboxylic acid, polycarboxylic acid and chitosan play the role of crosslinking agent, Improves the durability of various functions.

The present invention involves a preparation method of an environmentally friendly ecological board, which is a technical field of decorative materials.It includes the following steps: (1) Divide the blocked amine light stabilizer in the melamine modified resin, and then the first impregnation treatment, the first drying, the second impregnation treatment, the second immersion treatment, the second immersion treatment,The second drying system is high -colored, the fairy decoration layer; the scattered process of the light stabilizer includes: ① 100 parts of melamine modified resin according to the quality portion, 5 to 20 copies of the light stabilizer; ② in the melamine modified resinAdd an optical stabilizer while mixing; (2) compose the high -color target surface layer and the buffer balance layer of the single board for heat pressure;The formation of the plate is composed of the upper and lower surfaces of the substrate layer of the environmentally friendly plastic.The invention decorative board has the performance of low formaldehyde release and high level of light resistance.

The invention relates to a fluorochrome monomer, copolymeric fluorescent polyurethane emulsion and copolymeric fluorescent polyurethane-acrylic ester copolymer emulsion as well as preparation methods thereof. The dihydroxy-containing fluorochrome monomer is firstly synthesized, the dihydroxy-containing fluorochrome monomer is used as a chain extender and applied to a chain extension reaction of an aqueous polyurethane prepolymer, and after phase inversion, the copolymeric fluorescent polyurethane emulsion is prepared. In addition, the copolymeric fluorescent polyurethane emulsion and an alkene monomer are used for preparing the copolymeric fluorescent polyurethane-acrylic ester copolymer emulsion by emulsion grafting and copolymerization. A fluorescent chromophore group in the polymer emulsion is used as a side group and is bonded to a molecular chain; the polymer emulsion can be used as aqueous film forming resin, and widely applied to the fields of aqueous fluorescent paint, aqueous fluorescent ink, traffic sign, false proof mark, special clothes, leather, etc.

The invention relates to a denim anti-oxidant yellowing finishing agent and a preparation process thereof. The denim anti-oxidant yellowing finishing agent is prepared by mixing a component A and a component B in a weight ratio of 1 to 1, wherein the component A comprises the following components in percentage by weight: 10%-15% of alcohol amine, 8%-12% of dodecyl dimethyl amine ethyl lactone, 5%-10% of fatty alcohol-polyoxyethylene ether, 10%-30% of distilled water, 10%-20% of benzotriazole and the balance of water; the component B comprises the following components in percentage by weight: 8%-10% of fatty acid amide, 50%-60% of distilled water, 1%-3% of glacial acetic acid, 1%-2% of a calcium chloride solution, 15%-30% of a polyamine compound and the balance of water. Compared with the prior art, the denim anti-oxidant yellowing finishing agent has the advantages of being lasting in yellowing resistance, and the like.

The invention discloses red sun-proof acidic dyestuff. The structural formula of the red sun-proof acidic dyestuff is as shown in specification, and X is NH or O. The invention further discloses a preparation method of the dyestuff. The dyestuff not only has excellent light resistance, but also has light stabilizing effect on dyed fibers, and has good application prospect.

The invention discloses a protein material capable of absorbing ultraviolet ray and a preparation method thereof. According to the invention, an arylamine compound containing an ortho-nitroaniline structure is subjected to diazotization and then to a coupling reaction with the ortho-position hydroxyl groups of side groups of p-hydroxybenzmethylene in tyrosine residue in protein molecules and produces a structure containing an azo bond with macro-molecular side groups of proteins, and an ortho-hydroxyphenyl-benzotriazole structure is produced through loop closure between the azo bond and ortho-nitro group of an aromatic ring after further treatment with a reducing agent. The ortho-hydroxyphenyl-benzotriazole structure connected with macro-molecular chain of protein has the capability of absorbing ultraviolet ray, which enables a prepared protein material to have the capability of ultraviolet resistance and effectively enhances the functions of ultraviolet resistance and aging resistance of the protein material.

The invention relates to a high-color-fastness environment-friendly ecological board and a preparation method, and belongs to the technical field of decorative materials. The high-color-fastness environment-friendly ecological board comprises a base board layer, buffer and balance layers and high-color-fastness facing layers. The level of the color fastness of the high-color-fastness facing layers reaches the fifth level or above. The upper surface and the lower surface of the base board layer are bonded to the buffer and balance layers through environment-friendly glue. The high-color-fastness facing layers are made of wood-grained paper soaked in melamine modified resin containing a light stabilizer. The high-color-fastness facing layers are bonded to the upper surfaces of the buffer and balance layers. The buffer and balance layers are made of poplar veneers or Eucalyptus veneers or technical wood veneers. The base board layer is made of multiply plywood or a core-board. A modified bio-based adhesive or a modified starch adhesive is used as the environment-friendly glue. A hindered amine compound is used as the light stabilizer. The high-color-fastness environment-friendly ecological board has the paint-free function and also has the performance of low formaldehyde emission and the high level of color fastness to light.

The invention relates to a method for improving the fluorescence dye color fastness of brocade / spandex blended fabrics, and belongs to the technical field of fabric printing and dyeing. The method for improving the fluorescence dye color fastness of brocade / spandex blended fabrics comprises the following steps: preprocessing the brocade / spandex blended fabrics by using mixed plasma including O2 and NH3 in a vacuum chamber; carrying out fluorescence dyeing treatment on the preprocessed brocade / spandex blended fabrics; and post-processing the fluorescence dyed brocade / spandex blended fabrics. The fluorescence dyeing method can substantially improve the dyeing effect of disperse fluorescence dyes in brocade, spandex and brocade / spandex blended fabrics, allows the dyes to be closely combined with the fabrics, and can substantially improve the water washability, the color fastness to rubbing and the color fastness to light of the brocade / spandex blended fabrics.