35results about How to "Little discoloration" patented technology

The invention discloses a water-resistant high-temperature-resistant single-component waterborne polyurethane adhesive and a preparation method thereof and relates to the technical field of polyurethane adhesives. The adhesive comprises, by weight, 30-40 parts of polytetrahydrofuran glycol, 15-22 parts of polycarbonate diol, 3-7 parts of poly-2,6-polyethylene naphthalate polyester glycol, 17-25 parts of diisocyanate, 2-5 parts of chain extender, 0.5-2 parts of silane coupling agent modified silicon dioxide nanoparticles, 0.1-0.6 part of dibutyltin dilaurate, 4-8 parts of acetone, 1-3 parts oftriethylamine, 0.05-0.1 part of sodium hydroxide and an appropriate amount of water. Polytetrahydrofuran and polycarbonate diol are adopted as oligomer polyhydric alcohols in raw materials for preparing polyurethane, and added poly-2,6-polyethylene naphthalate polyester glycol is introduced to a soft-segment part of polyurethane; by adding silane coupling agent modified silicon dioxide nanoparticles, the mechanical properties and heat resistance of the adhesive can be improved; the prepared adhesive is high in adhesive force and excellent in water resistance and high temperature resistance, and the application range of the adhesive is enlarged.

The invention relates to a durable flame-retardant, water-repellent, waterproof and moisture permeable finishing method of a polyester fabric. A flame-retardant and water-repellent finishing agent is prepared from 20-30 parts of cyclic phosphate flame retardants, 60-70 parts of water, 1-1.5 parts of isocyanate cross-linking agents, 3-5 parts of fluorocarbon copolymer waterproof agents and 2-5 parts of NaOH with 10% mass concentration. A bottom coating adhesive is prepared from 100 parts of polyether polyurethane polymer under-coating adhesives, 5-10 parts of methylbenzene, 5-10 parts of butanone, 2 parts of isocyanate cross-linking agents, 1 part of accelerant and 25-35 parts of organic phosphorus-nitrogen flame retardants. A surface coating adhesive is prepared from 100 parts of polyether polyurethane polymer top-coating adhesives and 35-45 parts of methylbenzene. The fabric is padded, calendered, under-coated and top-coated with water repellents to achieve finishing by the flame-retardant and water-repellent finishing agent, the bottom coating adhesive and the surface coating adhesive.

The invention relates to a high-temperature no-dropping-point lubricating grease and a production technique thereof. The high-temperature no-dropping-point lubricating grease is prepared from the following components in parts by weight: 13.7-84.4 parts of base oil, 5-15 parts of bentonite thickener, 5-50 parts of composite calcium sulfonate lubricating grease, 5-20 parts of tackifier, 0.5-1 part of antioxidant and 0.1-0.3 part of metal deactivator. The preparation method of the composite calcium sulfonate lubricating grease comprises the following steps: converting superhigh-base-number calcium sulfonate with a conversion agent at 60-100 DEG C for 20-60 minutes until the superhigh-base-number calcium sulfonate becomes obviously thickened, and heating to 140-180 DEG C to remove water. The high-temperature no-dropping-point lubricating grease has the advantages of long grease addition period and wide adaptability, and can be used in high-temperature positions; and at high temperature, the high-temperature no-dropping-point lubricating grease also has the advantages of no coking, light discolorment, less oil bleeding, low loss and longer service life.

A dental polymerizable composition comprising (a) a fluorine compound comprising a chain polymer having a main chain comprising a monomer unit having a hydrophilic group, and terminal groups comprising a fluoroalkyl group at each of both ends of the main chain; (b) a polymerizable monomer; and (c) a polymerization initiator. The dental polymerizable composition can be suitably used, for example, for dental composite resins, such as dental composite filler materials, crowning materials, and bonding materials; dental adhesive agents, such as teeth-straightening adhesive agents, cavity-coating adhesive agents, and tooth fissure sealing materials; denture base materials, denture base mucosal adjusting materials, fissure sealants, coating agents applied to tooth surface or dental prosthetic, surface glazes, and the like, and especially for various coating applications, for example, a fissure sealant, a coating agent to tooth surface or dental prosthetic, surface stains or a surface glaze, a hypersensitive inhibitor, a dental manicure, or the like.

A curable silicone composition comprises: (A) an organopolysiloxane represented by an average unit formula; (B) an organopolysiloxane having 10 or less silicon atoms, wherein 30 to 60 mole % of all silicon atom-bonded organic groups are alkenyl groups having from 2 to 6 carbons; (C) an organopolysiloxane represented by a general formula; (D) an organopolysiloxane having at least 2 silicon atom-bonded hydrogen atoms in a molecule, wherein the content of phenyl groups in all silicon atom-bonded organic groups in this component is at least 20 mole %; (E) an organopolysiloxane having at least 2 silicon atom-bonded hydrogen atoms in a molecule, wherein the content of phenyl groups in all silicon atom-bonded organic groups in this component is less than 20 mole %; (F) a hydrosilylation reaction catalyst; (G) a white pigment; and (H) an inorganic filler other than a white pigment, has excellent formability for forming a cured product that has little discoloration and lowering of mechanical strength by heat and light, has high light reflectance, has excellent dimensional stability, and is capable of good attachment by a sealing agent used for an optical semiconductor device.

A thermoplastic resin article which includes a layer made of a thermoplastic resin composition containing 50 to 97% by weight of a polyolefin A, 2 to 45% by weight of a barrier resin B, and 1 to 45% by weight of a modified polyolefin Ca and/or a styrene copolymer Cb. The ratio of the melt viscosities of the polyolefin A and the barrier resin B satisfies the formula: 0.7<MV_B/MV_A<2.8 wherein MV_A is a melt viscosity (Pa·s) of the polyolefin A and MV_B is a melt viscosity (Pa·s) of the barrier resin B, each measured under a shear rate of 100 s⁻¹ at a temperature from MP+2° C. to MP+10° C. wherein MP is the melting point of the barrier resin B. The thermoplastic resin article exhibits good fuel barrier properties and impact resistance.

The heat-curable resin composition of the present invention comprises an epoxy-containing resin and a curing agent, wherein the curing agent is cyclohexanetricarboxylic acid and/or an anhydride thereof. The heat-curable resin composition exhibits an excellent curability without using an curing accelerator and provides a colorless transparent cured product which is little discolored under high-temperature conditions and irradiation conditions of high-energy light. The heat-curable resin composition is suitable for producing coating compositions, adhesives, shaped articles, protective films for color filters and sealing materials for photosemiconductors such as blue LED and white LED.

The purpose of the present invention is to provide: a laminating film which is to be used in an organic glass, which suffers from little discoloration of a resin film even after electron beam irradiation and thus exhibits excellent transparency, and which exhibits excellent weather resistance and scratch resistance and excellent three-dimensional molding properties; and an organic glass using the same. In a laminating film which is to be used in an organic glass and which comprises both a resin film that contains a triazine ultraviolet absorber and a surface protection layer, the surface protection layer is formed of a cured product of an electron-beam-curable resin composition that comprises a polycarbonate (meth)acrylate and a polyfunctional (meth)acrylate at a mass ratio of 98:2 to 50:50. An organic glass is manufactured using the laminating film.

The invention provides a golf ball having a core and a cover of one or more layer, wherein at least one layer of the cover is made of a material obtained by molding a mixture composed of (a) 100 parts by weight of a base resin and (b) 1 to 40 parts by weight of a saturated branched-chain fatty acid or a derivative thereof. The golf ball has a soft, pleasant feel on impact and excellent scuff resistance while retaining a good flight performance. Moreover, it exhibits a highly white appearance that undergoes little discoloration.

Disclosed is a soluble glassy antimicrobial agent that, when used for water treatment, exhibits a sufficient antimicrobial effect with minimal degradation and discoloration. Also disclosed is a granular water-treatment agent that has excellent filling and processing performance. The disclosed soluble glassy antimicrobial agent contains, in terms of oxide mass, 0-5% SiO2, 5-10% K2O, 0.1-5% Ag2O, 60-75% B2O3, 10-20% Al2O3, and between 0 and 10% of at least one oxide selected from among MgO, BaO, and ZnO. Said soluble glassy antimicrobial agent exhibits high antimicrobial performance with minimal degradation and discoloration. The disclosed water-treatment agent consists of the disclosed soluble glassy antimicrobial agent shaped into grains that bulge on at least one side. The result has excellent filling performance and water permeability and is highly useful as a water-treatment agent.

The invention relates to cross-linkable products based on organosilicon compounds and exhibiting biostatic properties and to a method for the production and use thereof, wherein the inventive cross-linkable products contain organosilicon compounds of quaternary ammonium groups.

A spun-dyed meta-type wholly aromatic polyamide fiber with small discoloration and fading due to the light exposure, in which the content of the solvent remaining in the fiber is at a certain level or less. Specifically, a spun-dyed meta-type wholly aromatic polyamide fiber, in which the residual solvent content of the fiber is 0.1% by mass or less based on the whole mass of the fiber.

An inkjet ink that shows only a small amount of discoloration over time and is capable of printing with a stable color, not only when printed on a surface of a print object having a relatively low ink permeability, but also when printed on a surface of a print object having a relatively high ink permeability, and provide a printed item including a printed area printed using the inkjet ink. A gray ink according to the present embodiment is an edible inkjet ink which contains at least a first colorant which is a food dye and a second colorant which is a food dye, and the first colorant is at least one of Red No. 3, Red No. 40, Red No. 104, Red No. 105, and Red No. 106.