30results about How to "Strong anti-yellowing" patented technology

The invention discloses terylene afterprocessing oil agent for preventing xanthochromia, which is mainly formed by smoothing agent, emulsifying agent, cleaning agent and addition agent, and is characterized in that weight percentage of each component is smoothing agent 85%-90%, emulsifying agent 5%-10%, cleaning agent 2%-4% and addition agent 1%-1.5%. According to the weight percentage of each component, the method for preparation is that firstly packing emulsifying agent and cleaning agent with precise measure into an autoclave to heat from 50 DEG C to 80 DEG C, secondly packing smoothing agent into the autoclave to mix for 40-60 min, thirdly charging addition agent to mix homogeneously, and then cooling, filtering and packaging. The terylene after-processing oil agent for preventing xanthochromia has the advantages that interfacial force is low, permeability and diffusibility are good, the applying oil process is quick and homogeneous, the volume for applying oil is easy to be controlled, after-processing is smooth and has no imperfect effect on weave process and causticity component, and the invention is easy for washing and not influence on coloration and topical finish, and is good in cohesion property and forming of silk can, high in oil film strength, and strong in ability of preventing xanthochromia, thereby being favorable to store silks.

The invention discloses novel polyurethane semi-matte white finish for woodware protection. The finish is prepared by mixing the following components: stearic acid modified alkyd resin, polyketone resin solution, an antifoaming agent, an anti-settling agent, a dispersing agent, white slurry, handfeel wax powder, aerosol extinction powder, 20 percent hydroxyl modified vinyl acetate (VAGH) resin, a leveling agent, an anti-yellowing auxiliary agent, a deodorant and butyl ester. A film prepared from the novel polyurethane semi-matte white finish has the advantages of fullness, moderate hardness, high flexibility, high water resistance, yellowing resistance and environmental protection; and the semi-matte white finish has high comprehensive performance.

The invention provides a high-temperature resistant sealant for inverted COBs (chip on board) and belongs to the technical field of LED package sealants. The high-temperature resistant sealant comprises a component A and a component B which are equal in mass, wherein the component A comprises, by weight, 90-110 parts of vinyl silicone oil, 0.1-0.5 part of platinum group catalysts, 1-5 parts of a thickening agent and 0.1-2 parts of a heat resistant agent; the component B comprises, by weight, 50-80 parts of MQ-type vinyl silicone resin, 30-60 parts of a crosslinking agent and 0.01-0.05 part ofan inhibitor. The high-temperature resistant sealant is good in performance and cannot crack even under the high temperature of 280DEG C for a long term, and meanwhile, good light transmittance is sustained.

The invention discloses anti-yellowing hard interior wall paint. The anti-yellowing hard interior wall paint is prepared from, by weight, 1-3 parts of triglycidyl isocyanurate, 13-20 parts of nanometer silicon dioxide, 2-3 parts of N, N'-ethylene bis-stearamide, 0.8-1 part of benzotriazole, 4-6 parts of pentaerythritol, 1-2 parts of bisphenol A diglycidyl ether, 1-3 parts of ammonium octamolybdate, 0.7-1 part of trichloroisocyanuric acid, 1-2 parts of 3-(trimethoxysilyl)-1-propanamine, 46-50 parts of tetrabutyl titanate, 0.3-1 part of antioxidant 1010 and 110-120 parts of silicone modified acrylate emulsion. The interior wall paint is high in anti-yellowing performance and excellent in comprehensive performance.

The invention discloses a matt weather-resistant powder coating and a preparation method thereof. The matt weather-resistant powder coating comprises the following components in parts by weight: 49-49.9 parts of first power, 49-49.9 parts of second powder and 0.2-2 parts of aluminum oxide, and the mass ratio of the first powder to the second powder is 1: 1. The preparation method of the coating comprises the following steps: step 1, preparing the first powder; step 2, preparing the second powder; and step 3, mixing the first powder, the second powder and the aluminum oxide in a preset ratio toobtain the product. According to the matt high weather-resistant powder coating disclosed by the invention, the effects of matt, good curing performance and excellent weather resistance are achievedby mixing the first powder with the second powder in proportion.

The invention relates to a preparation method of aqueous emulsion type neoprene antioxidant system product, which belongs to the field of adhesive technology. The invention chooses p-cresol and dicyclopentadiene butyl reactant as the main antioxidant to coordinate with the composite termination agent made from phenothiazine and N,N-dialkyl hydroxylamine compound to produce a functional antioxidant. With the adoption of the suspension producing process and powder grinding and emulsifying equipment, the functional antioxidant is further produced into an aqueous emulsion type neoprene antioxidant system product. Adding 0.75-1.89% of aqueous emulsion type neoprene antioxidant system product provided by the invention in the process of preparing a neoprene product sample, the appearance and color,mooney viscosity, peeling strength, viscosity performance indexes of the solution are relatively stable in a hot air aging test under the temperature of 70 DEG C.

The invention belongs to the technical field of organosilicone and discloses a quaternary ammonium salt modified diamine-terminated polydimethylsiloxane emulsion and a preparation method and an application thereof. The emulsion provided by the invention comprises the following components which are obtained by performing a reaction in water in parts by mass: 100 parts of diamine-terminated polydimethylsiloxane, 0.5-100 parts of quaternary ammonium salt with epoxy groups and 10-300 parts of a nonionic emulsifier. The quaternary ammonium salt modified diamine-terminated polydimethylsiloxane emulsion provided by the invention is prepared in an emulsifying system, so that the problem that the reaction rate is low as materials are not dissolved by one another is solved, and no organic solvents are needed, and the emulsion is high in flexibility and high in practicality; a quaternary ammonium salt functional group is introduced into the molecular framework thereof, so that the product performance of diamine-terminated polydimethylsiloxane is further improved, the stability is good and the anti-yellowing ability is strong. The quaternary ammonium salt modified diamine-terminated polydimethylsiloxane emulsion provided by the invention is simple and feasible in production process, short in production period, free of strict requirements on production equipment, and easily available in raw material, can easily realize industrial production, and provides a conditioning aid which is unique in performance for daily use chemicals and textile industries.

The invention discloses a preparation method for coating PVDC (polyvinyl dichloride) waterborne emulsion. The method includes the steps: (1) preparing reaction raw materials; (2) preparing initiator water solution; (3) preparing premixed liquid; (4) polymerizing seed emulsion; (5) polymerizing PVDC emulsion; (6) desorbing the emulsion. Hard pieces such as PVC (polyvinyl chloride), PET (polyethylene terephthalate), nylon and PCT (polycaprolactam) are coated with the PVDC waterborne emulsion prepared by the method to prepare composite hard pieces, and the composite hard pieces have the advantages that the composite hard pieces are high impact strength and heat stability, good in barrier property and high in yellow-resistant ability, do not easily generate cracks, cannot dissolve out harmfulsubstances and can directly contact with drugs and the like.

The invention discloses a PVDC waterborne emulsion used for coating. The PVDC waterborne emulsion is prepared from the following components by weight: 1 to 5 parts of a seed monomer, 45 to 55 parts ofa VDC monomer, 4 to 10 parts of a comonomer, 0.01 to 0.05 part of an initiator, 0.1 to 0.5 part of a seed emulsifier, 0.5 to 3 parts of an emulsifier, 0.01 to 0.05 part of an auxiliary agent, 0.001 to 0.01 part of a modifying auxiliary agent and 35 to 40 parts of deionized water. The PVDC waterborne emulsion provided by the invention is coated onto hard sheets of PVC, PET, nylon, PCT and the liketo form composite hard sheets, and has the advantages of high impact strength, small possibility of crack generation, good barrier properties, no dissolution of harmful substances, capability of directly contacting with chemicals, high thermal stability, strong yellowing resistance, etc.

The invention discloses a special substrate sealing agent for dyed veneers. The special substrate sealing agent comprises a main agent, a curing agent and a diluent. The main agent is composed of thefollowing raw materials in parts by weight: 50-70 parts of acrylic resin, 1 to 3 parts of methyl isobutyl ketone, 5 to 12 parts of butyl acetate, 0.1 to 1 part of a titanate coupling agent, 1-2 partsof barium sulfate, 0.1 to 0.5 part of a wetting agent, 0.3 to 1 part of a leveling agent, 0.3 to 1 part of an antifoaming agent, 2-4 parts of a light stabilizer, 0.4 to 1 part of a drier, 7 to 10 parts of butyl acetate and 15 to 20 parts of ethyl acetate. The curing agent is composed of the following raw materials in parts by weight: 60-70 parts of butyl acetate and 30 to 40 parts of an HDI tripolymer. The diluent is composed of the following raw materials in parts by weight: 40-50 parts of butyl acetate and 50-60 parts of propylene glycol methyl ether acetate. The special substrate sealing agent for the dyed veneers has extremely strong sealing property on grease in wood, and can effectively prevent the grease of the dyed veneers from seeping out.

The invention relates to the technical field of building materials and in particular relates to anti-ultraviolet and heat-insulated external wall paint and a preparation method thereof. The external wall paint comprises the following raw materials in percentage by weight: 10%-15% of de-ionized water, 0.1%-0.15% of a preservative, 1%-1.5% of a dispersant, 0.2%-0.5% of a wetting agent, 16%-20% of rutile titanium dioxide, 6%-8% of heavy calcium carbonate, 7%-10% of calcined kaolin, 5%-9% of wollastonite, 6%-8% of magnesium oxide, 30%-35% of acrylic acid modified emulsion, 0.3%-0.5% of an anti-settling agent, 3%-5% of glass beads, 0.9%-1.05% of an anti-yellowing agent, 2%-5% of a film-forming assistant, 0.2%-0.5% of a flatting agent and 0.25%-0.5% of a thickener. According to the external wall paint, the performance of reflection and heat insulation on light and heat is improved; outdoor and indoor heat bridges are disconnected for preventing outdoor and indoor heat alternation, so that the indoor heat loss is reduced, the energy resources are saved, the heat loss is reduced, the yellowing resistance is enhanced, and the heat insulation function is improved; the temperature of the external wall paint is 2.46 DEG C lower than the box indoor temperature of general paint, and the heat insulation effect is remarkable.

The invention discloses an engineering plastic with stable size, and a preparation method thereof. The engineering plastic comprises, by weight, 40-70% of PBT, 5-30% of PET, 3-10% of a compatilizer, 10-30% of a glass fiber, 5-25% of mica, 10-20% of a flame retardant, 0.1-0.5% of a main antioxidant, 0.1-0.5% of an auxiliary antioxidant and 0.1-0.5% of a lubricant. The mica and glass fiber components are added into the PBT system, so that the rigidity of the material can be improved, the size shrinkage rate of the product can be reduced, and the hardness and wear resistance of the product can beremarkably improved; besides, the PET component is added into the PBT system, so that the buckling deformation of the material can be improved, the size shrinkage rate of the product can be reduced,the molding processing stability of a workpiece can be improved, the temperature resistance can be improved, and the material cost can be reduced; and in addition, after the compatilizer is added, themica, the glass fiber and the PBT have good compatibility, and the impact strength of the alloy material can be greatly improved.

The invention discloses a yellowing-resistant heat-dissipation paint which is prepared from the following raw materials in parts by weight: 94-100 parts of polypropylene, 1-2 parts of triglycol diisooctoate, 0.2-0.4 part of sodium molybdate, 5-7 parts of dibutyl maleate, 3-4 parts of oyster shell powder, 1-2 parts of dimethyl methyl phosphonate, 8-12 parts of calcined kaolin, 2-4 parts of polyethyleneglycol 1000, 2-3 parts of precipitated silica white, 1-2 parts of tetrabutylammonium bromide, 1-2 parts of propanediol phenyl ether and 8-10 parts of modified assistant. The heat-dissipation paint has the advantages of high adhesive force, favorable surface leveling property, no shrinkage void, high yellowing resistance and excellent comprehensive properties.

The invention relates to a production technology of special color master batch titanium dioxide for automobile plastics. The technology comprises the steps of mineral separation, crushing, acidolysis, settlement, press filtration, titanium solution concentration, hydrolysis, water washing, bleaching, rinsing, salt treatment, diaphragm press filtration, calcining and crushing, wherein the As content is controlled below 5ppm in the mineral separation step; and in the salt treatment step, 0.5% of K2CO3 and 0.15% of H3PO4 are added to guarantee the specific surface area of the obtained titanium dioxide (by TiO2) being 8-15m<2> / g. The special color master batch titanium dioxide for automobile plastics, produced through adopting the above technical scheme, has the advantages of high whiteness, good dispersibility, strong hiding power, low processing torque and excellent anti-yellowing capability.

The invention belongs to the technical field of textiles, and particularly relates to organic cotton denim with a knitted fabric effect and a preparation method thereof. Cloth is manufactured through a knitting machine, then the cloth is processed into yarn through conventional procedures, and finished mercerized yarn is prepared through the procedures of knitting, acid-base composite cracking, dyeing, softening, dewatering and drying, calendaring, resin setting, preshrinking and the like. The organic cotton denim produced by the method is full in color and good in dyeing effect, and meets the requirements of market consumers for pursuing fashion and beauty. According to the invention, the acid-base composite cracking process for gray cloth is added before the dyeing process, so that impurities and heavy metal ions on the pure cotton gray cloth can be effectively removed, a high-quality pretreatment fabric is provided for subsequent dyeing, the softness is improved, and the fabric is more comfortable to touch; and the fabric is dyed by combination with a roller, so that the fabric is uniformly dyed and is not easy to fade.

The invention discloses a PVDC waterborne emulsion used for coating. The PVDC waterborne emulsion is prepared from the following components by weight: 1 to 5 parts of a seed monomer, 45 to 55 parts ofa VDC monomer, 4 to 10 parts of a comonomer, 0.01 to 0.05 part of an initiator, 0.1 to 0.5 part of a seed emulsifier, 0.5 to 3 parts of an emulsifier, 0.01 to 0.05 part of an auxiliary agent, 0.001 to 0.01 part of a modifying auxiliary agent and 35 to 40 parts of deionized water. The PVDC waterborne emulsion provided by the invention is coated onto hard sheets of PVC, PET, nylon, PCT and the liketo form composite hard sheets, and has the advantages of high impact strength, small possibility of crack generation, good barrier properties, no dissolution of harmful substances, capability of directly contacting with chemicals, high thermal stability, strong yellowing resistance, etc.

The invention discloses terylene afterprocessing oil agent for preventing xanthochromia, which is mainly formed by smoothing agent, emulsifying agent, cleaning agent and addition agent, and is characterized in that weight percentage of each component is smoothing agent 85%-90%, emulsifying agent 5%-10%, cleaning agent 2%-4% and addition agent 1%-1.5%. According to the weight percentage of each component, the method for preparation is that firstly packing emulsifying agent and cleaning agent with precise measure into an autoclave to heat from 50 DEG C to 80 DEG C, secondly packing smoothing agent into the autoclave to mix for 40-60 min, thirdly charging addition agent to mix homogeneously, and then cooling, filtering and packaging. The terylene after-processing oil agent for preventing xanthochromia has the advantages that interfacial force is low, permeability and diffusibility are good, the applying oil process is quick and homogeneous, the volume for applying oil is easy to be controlled, after-processing is smooth and has no imperfect effect on weave process and causticity component, and the invention is easy for washing and not influence on coloration and topical finish, and is good in cohesion property and forming of silk can, high in oil film strength, and strong in ability of preventing xanthochromia, thereby being favorable to store silks.

The invention discloses a special substrate sealer for stained veneer, which comprises a main agent, a curing agent and a diluent. The main agent is composed of the following raw materials in parts by weight: acrylic resin: 50-70 parts; methyl isobutyl Ketone: 1-3 parts; Butyl acetate: 5-12 parts; Titanate coupling agent: 0.1-1 part; Barium sulfate: 1-2 parts; Wetting agent: 0.1-0.5 parts; Leveling agent: 0.3 ~1 part; defoamer: 0.3~1 part; light stabilizer: 2~4 parts; drier: 0.4~1 part; butyl acetate: 7~10 parts; ethyl acetate: 15~20 parts; The curing agent is composed of the following raw materials in parts by weight: butyl acetate: 60-70 parts; HDI trimer: 30-40 parts; the thinner is composed of raw materials in the following parts by weight: butyl acetate: 40-40 parts 50 parts: Propylene Glycol Methyl Ether Acetate: 50-60 parts, the special substrate sealant for dyed veneer has a strong sealing ability to the oil in wood, and can effectively prevent the oil of dyed veneer from seeping out.

The invention discloses a fluorine-containing thiophene derivative 3‑(N‑trifluoroacetylamino)thiophene, a synthesis method and an application thereof. Described 3-(N-trifluoroacetylamino)thiophene is shown in formula 1, and the preparation method is: dissolving 3-aminothiophene oxalate in dichloromethane, and under the action of triethylamine, obtains the free state 3‑aminothiophene, then cool the reaction solution to 0°C, slowly add trifluoroacetic anhydride dropwise, react at room temperature for 8-10 hours, add saturated sodium bicarbonate solution until no bubbles are generated, and obtain a reaction mixture that is separated and purified to obtain 3‑(N‑trifluoroacetylamino)thiophene; the amount of the 3‑aminothiophene oxalate, triethylamine and trifluoroacetic anhydride is 1:1~5:1~3. The 3-(N-trifluoroacetylamino)thiophene of the present invention is applied to the preparation of composite emulsions.

The invention provides a high-temperature resistant sealant for inverted COBs (chip on board) and belongs to the technical field of LED package sealants. The high-temperature resistant sealant comprises a component A and a component B which are equal in mass, wherein the component A comprises, by weight, 90-110 parts of vinyl silicone oil, 0.1-0.5 part of platinum group catalysts, 1-5 parts of a thickening agent and 0.1-2 parts of a heat resistant agent; the component B comprises, by weight, 50-80 parts of MQ-type vinyl silicone resin, 30-60 parts of a crosslinking agent and 0.01-0.05 part ofan inhibitor. The high-temperature resistant sealant is good in performance and cannot crack even under the high temperature of 280DEG C for a long term, and meanwhile, good light transmittance is sustained.

The invention discloses a thiophene derivative (E2SBFE2) as shown in formula 1, 2,7-bis(2,2',3,3'-tetrahydro-5,5'-dithieno[3,4- b][1,4]dioxane)-9,9'-spirobifluorene and its synthesis method and its application as a polymer emulsion additive; E2SBFE2 can be used as an additive to compound with PVDC emulsion to prepare composite emulsion E2SBFE2@PVDC , the composite emulsion is especially suitable for coating on PVC and other hard sheets to make composite hard sheets, and has the advantage of strong anti-yellowing ability;

The invention relates to the technical field of resin modification, in particular to an anti-yellowing salt-fog-resistant polyamide-imide resin composition as well as a preparation method and application thereof. BOCAT-A and BOCAT-B are added into polyamide-imide resin to modify the polyamide-imide resin; the mass percentages of the added BOCAT-A, the added BOCAT-B and the added polyamide-imide resin are 5.0-20.0% and 2.0-8.0% respectively, the amide-imide resin modified by the BOCAT-A and the BOCAT-B has advantages of strong yellowing resistance and high salt spray resistance, and the polyamide-imide resin is modified by the BOCAT-A and the BOCAT-B so as to enhance the comprehensive performance of the polyamide-imide resin.

The invention discloses a preparation method for coating PVDC (polyvinyl dichloride) waterborne emulsion. The method includes the steps: (1) preparing reaction raw materials; (2) preparing initiator water solution; (3) preparing premixed liquid; (4) polymerizing seed emulsion; (5) polymerizing PVDC emulsion; (6) desorbing the emulsion. Hard pieces such as PVC (polyvinyl chloride), PET (polyethylene terephthalate), nylon and PCT (polycaprolactam) are coated with the PVDC waterborne emulsion prepared by the method to prepare composite hard pieces, and the composite hard pieces have the advantages that the composite hard pieces are high impact strength and heat stability, good in barrier property and high in yellow-resistant ability, do not easily generate cracks, cannot dissolve out harmfulsubstances and can directly contact with drugs and the like.

The invention relates to the technical field of sugarcane planting, in particular to a perennial root sugarcane management method for a sugarcane yellowing susceptible area. According to the method, the soil conditioner is spread before seedling emergence of the ratoon sugarcane, sufficient nutrients are provided for the ratoon sugarcane, rooting and germination are promoted, chlorophyll is promoted, the pH value of soil is adjusted, residual pesticide in the soil is degraded, some heavy metal is transferred, solidified and passivated, and harmful soil residues are reduced; the effect of preventing and treating diseases and pests is achieved, flora balance is adjusted, and the condition of soil hardening is prevented and treated; the foliar fertilizer is sprayed after sugarcane seedling emergence, nutrients can be provided for ratoon sugarcane, growth of chlorophyll is promoted, root development can be promoted, the soil holding capacity and nutrient absorption capacity of sugarcane roots can be improved, the effects of yellowing resistance, seedling strengthening, drought resistance and high stress resistance are achieved, and an effective way is provided for high quality and high yield of ratoon sugarcane.

The invention discloses a thiophene derivative (E2SBFE2) as shown in a formula 1, 2,7-bis(2,2',3,3'-tetrahydro-5,5'-dithieno[3,4-b][1,4]dioxene)-9,9'-spirobifluorene, a synthetic method of the thiophene derivative and application of the thiophene derivative as a polymer emulsion additive. The E2SBFE2 can be used as an additive to be compounded with a PVDC emulsion to prepare a composite emulsion E2SBFE2-coated PVDC, and the composite emulsion is particularly suitable for being smeared on hard sheets such as PVC and the like to prepare composite hard sheets and has the advantage of high yellowing resistance.

The invention relates to an anti-yellowing treatment process of environment-friendly rubber filling oil and belongs to the technical field of rubber filling oil. The anti-yellowing treatment process is characterized by comprising process steps as follows: 1) to-be-treated rubber filling oil is added to an extraction kettle and subjected to extraction separation with an oxidation-extraction mixed fluid, the fluid flow of an oxidation solution is 1 mL / h-20 mL / h, the fluid flow of an extraction solution is 40 mL / h-100 mL / h, the extraction temperature is 175-195 DEG C, the initial pressure of extraction is 1.5 MPa-2.0 MPa, and the stirring rate is 100-300 rpm; the mixed fluid with the extraction solution dissolved is distilled, and the mixed fluid with rubber filling oil and an extracting agent dissolved is left to stand for layering separation. The decoloration refinement method has higher decoloration capacity than existing common solvent refinement or adsorption refinement method, the recovery rate of a target product is higher than 98%, and the anti-yellowing performance of the rubber filling oil subjected to decoloration refinement is higher.

The invention belongs to the field of foaming sole manufacturing processes, and particularly relates to a glue-free foaming sole which comprises a wear-resistant layer bottom piece, a thin film layeris bonded to the wear-resistant layer bottom piece, a foaming layer is wrapped in the thin film layer, and the thin film layer is of a double-layer structure of an aliphatic TPU layer or an aliphaticTPU bottom layer composite aromatic TPU surface layer and other common TPU surface layers. In addition, the invention correspondingly provides a corresponding manufacturing method. According to the invention, the aliphatic TPU film is adopted, has very high viscosity after being heated and softened, can be directly and stably bonded with the sole without glue, effectively avoids the pollution caused by using glue as a bonding agent, is environment-friendly, labor-saving and convenient to popularize and apply, and has remarkable substantive features.