67results about How to "Won't turn yellow" patented technology

The invention relates to a waterborne polyurethane finishing agent for PVC (Polyvinyl Chloride) protective gloves and a preparation method thereof, in particular to a waterborne polyurethane finishing agent for protective gloves and a preparation method thereof, belonging to polyurethane coating combinations. The waterborne polyurethane finishing agent is characterized in that firstly, mixed polyether glycol and aliphatic diisocyanate are used as raw materials to synthesize isocyanate-terminated perpolymer, wherein the mole ratio of a isocyanato group and a hydroxyl group is NCO:OH=2.0-3.2; secondly, dimethylopropionic acid DMPA is used as a hydrophilic chain extender, and the dosage of the DMPA is 3-6 percent of the weight of the perpolymer; thirdly, triethylamine is used as a branched chain extender, and the dosage of the triethylamine is 1-4 percent of the weight of the perpolymer; fourthly, a coupling agent is added in emulsion with the addition quantity of 2-5 percent of the weight of the perpolymer; and fifthly, the solid content of the emulsion is 25-30 percent. The invention provides the waterborne polyurethane finishing agent for the PVCprotective gloves, which has the advantages of favorable storage stability, strong adhesive force, strong elasticity, strong drawing force, long service life, comfortable wearing and free removal. and the preparation method thereof.

The invention discloses a bonding method of touch screen substrates, comprising the following steps of: (1) preparing a substrate to be bonded, wherein the substrate has a shadow region and a transparent region; (2) uniformly coating a prime coat binder on the shadow region at one surface of the substrate; (3) uniformly coating a main binder on the transparent region at the same surface of the substrate; (4) bonding the other substrate with the substrate coated with the prime coat binder and the main binder; (5) procuring the two substrates via a UV lamp; (6) curing the procured substrates through ultraviolet radiation by the UV lamp; (7) baking the two substrates in a baking oven. The invention further discloses a binder for bonding of the touch screen substrates, wherein the binder comprises the prime coat binder and the main binder, and can cure and curdle under a lower temperature, the curing time is short, the main binder is free of hyperoxide and can be stored at room temperature, so that the binder cannot turn yellow in the storage process, and a view area of the touch screen cannot turn yellow.

The invention discloses a water-soluble acrylic resin which comprises functional monomers, (methyl)acrylic acid, (methyl)hydroxyalkyl acrylate, acrylamide, an initiator, a reducer and water. The waterborne resin can not become yellow, has the advantages of high outdoor weather resistance, favorable dispersity for pigment, low cost, favorable water solution resistance, favorable punching oil resistance, favorable solvent resistance, high formability, favorable heat resistance, favorable bending resistance, no odor and simple production technique, and is in the leading position in China. The water-soluble acrylic resin can be widely used for surface coating of aluminum and aluminum alloy products, and especially for coating surfaces of heat exchanger fins of air conditioners.

A multilayer backsheet (1) for a photovoltaic module according to the invention comprises a first outside layer (2), a second outside layer (3) and at least one inside layer (4, 5) which is arranged between these outside layers (2, 3). This at least one inside layer (4, 5) forms a water-vapor barrier and / or oxygen barrier. All these layers (2, 3, 4, 5) are composed of polymers. The multilayer backsheet (1) for a photovoltaic module according to the invention is characterized in that at least one of the two outside layers (2, 3) comprises a polyamide, and that the at least one inside layer (4, 5) consists of polymers which are no fluoropolymers and do not comprise any polyethylene. Inside layers (4, 5) made of partly aromatic polyesters are used only in combination with at least one outside adhesion promoter layer (6) made of block copolyesteramide.

The invention discloses a method for preparing high-purity and high-yield pyrophosphoric acid piperazine. Phosphorus pentoxide is added into a reaction still which is provided with a stirring and recycling device, stirring is conducted while 85% phosphoric acid is added in a dropwise mode, and after dropping is finished, the temperature of the reaction still is adjusted to 150-250 DEG C and kept for 0.5-5 h through the temperature rising control of the reaction still; the temperature of the reaction still is reduced to 50-100 DEG C through the temperature decreasing control of the reaction still, and glacial acetic acid is added into the reaction still and stirred for 0.1-2 h; piperazine is added in batches, and the temperature of the reaction still is kept between 80 DEG C and 150 DEG C for 1-5 h; the temperature is decreased to the indoor temperature, filter pressing is conducted, filter cakes are dried through a rake type drier, a clamping sleeve of the rake type drier is heated by heat transfer oil, the temperature of the heat transfer oil of the clamping sleeve of the rake type drier is controlled between 100 DEG C and 250 DEG C, the vacuum degree is 0.01-0.1 Mpa, a vacuum desolventizzazione is kept for 1-6 h, and then high-purity pyrophosphoric acid piperazine crystals are prepared. The purity of the product prepared through the method is 99% or above, the yield of the product prepared through the method is 95% or above, the whiteness of the product prepared through the method is 93% or above, the heat stability of the prepared pyrophosphoric acid piperazine is good, no byproduct is produced, and cost is low.

Moisture-curable crosslinkable composition (I) comprises: at least one silane compound (A1); one or more organosilicon compounds (B1) containing basic nitrogen; and one or more oxaldianilides. Moisture-curable crosslinkable composition (I) comprises: at least one silane compound of formula (A-[(C(R 1>) 2) b-SiR a(O(R) 2) 3 - a] x) (A1); and one or more organosilicon compounds (B1) containing basic nitrogen and one or more oxaldianilides of formula (R 3>-NH-C(=O)-C(=O)-NH-R 3>) (C1). A : x-valent polymer radical bonded via nitrogen, phosphorus, oxygen, sulfur, carbon or a carbonyl group; R : monovalent, optionally substituted hydrocarbon radicals; R 1>H or a monovalent, optionally substituted hydrocarbon radical optionally linked to the carbon atom via nitrogen, phosphorus, oxygen, sulfur or a carbonyl group; R 2>H or a monovalent, optionally substituted hydrocarbon radical; R 3>monovalent, optionally substituted phenyl radicals; x : 1-10; a : 0-2; and b : 1-10. An independent claim isincluded for a molding produced by (I).

The invention discloses a TEMPO / soluble chlorite / soluble pypocholoride catalytic system for performing a carboxyl reaction on C6 of a bacterial cellulose, and the soluble chlorite is a main catalyst. The invention further discloses a method for performing the carboxyl reaction on the C6 of the bacterial cellulose. The TEMPO / soluble chlorite / soluble pypocholoride catalytic system serves as the catalyst of the carboxyl reaction of the C6 of the bacterial cellulose, a product of COOH after the reaction is high in content, and yield is greatly increased. Crystallinity degree and a micro state of BC after the reaction are not changed, oxidation only occurs to the C6 position of the BC, and Cs at the other positions are not influenced. The soluble chlorite in the system is the main catalyst and is sold and bought in a solid form, is easy to store, use amount is easy to control. A product after the reaction cannot become yellow, and controllability and repeatability of the reaction are both high.

The invention is directed to aqueous liquid laundry detergent compositions for cleaning and imparting fabric care benefits to fabrics laundered therewith. Such compositions comprise (A) at least one detersive surfactant; (B) droplets of a silicone blend comprising a nitrogen-containing amino or ammonium functionalized polysiloxane and a nitrogen-free non-functionalized polysiloxane; and (C) at least one additional non-silicone laundry adjunct selected from detersive enzymes, dye transfer inhibiting agents, optical brighteners, suds suppressors and combinations thereof. The functionalized polysiloxane component of the silicone blend has a relatively low, i.e., less than 30 mol%, content of reactive / curable groups, a nitrogen content which ranges from 0.05% to 0.50% by weight and a viscosity which ranges from 0.00002 m<2> / s to 0.2 m<2> / s. The nitrogen-free, non-functionalized polysiloxane material ranges in viscosity from 0.01 m<2> / sec to 2.0 m<2> / sec. Such compositions may not additionally contain coacervate phase-forming polymers and / or cationic deposition aids.

The invention discloses an ultra-thin film viewing illuminator, which comprises a frame body, a transparent device, a backboard, a light source and a drive. The ultra-thin film viewing illuminator is characterized in that the frame body is sequentially and fixedly provided with a light guide plate and the rear panel from the front side to the back side; an edge of the light guide plate is provided with a reflecting shade, and the light source is arranged inside the reflecting shade. The reflecting shade comprises a reflecting shade body with an arch structure and a planar lateral wing, and the lateral wing is connected with the front side of the light guide plate. The invention has the advantages of even illumination, safe energy conservation, correct film-reading, eyes protection, ultra-thin shape and low production cost.

The invention relates to a dehydrating device of epoxidized soybean oil. The device comprises a dehydrating tank body, wherein a feed inlet is formed in the top of the dehydrating tank body, a discharge opening is formed in the bottom of the dehydrating tank body, a vacuum interface for extracting moisture is further formed in the top of the dehydrating tank body, a rotary groove which is driven by a motor to rotate is inserted into the dehydrating tank, a plurality of leak holes are respectively formed in the left and right side faces and the bottom face of the rotary groove, a rotary disc is arranged below the rotary groove, a plurality of arc-shaped catches are arranged on the upper surface of the rotary disc, and an electric tracing ribbon is arranged outside the dehydrating tank body. The dehydrating device provided by the invention is simple structure and skillful in design, and the distillation time of the epoxidized soybean oil is obviously shortened, thus the distilling temperature can be properly lowered, and the defects that the prepared finished product is poor in thermal stability and the product is yellow are avoided.

The invention relates to a microcystis aeruginosa culture method. The microcystis aeruginosa culture method includes the steps of a, previous preparation, b, microcystis aeruginosa preculture, and c, inoculation and culture of microcystis aeruginosa. The microcystis aeruginosa culture method has the advantages that the microcystis aeruginosa culture method is high in microcystis aeruginosa survival rate and microcystis aeruginosa growing rate, and a microcystis aeruginosa solution cannot yellow during culture and is less prone to being contaminated by other bacteria.

The invention provides a high-elasticity sneaker air cushion sole and a production method thereof and researches a sneaker sole with high elasticity, high wear resistance and low hardness. The high-elasticity sneaker air cushion sole comprises a phylon (MD) midsole, an air cushion and a large sole which are sequentially and fixedly connected with one another from top to bottom, wherein an ethylene-vinyl acetate copolymer (EVA) cushion piece is assembled on a heel part of the air cushion; and the material formula of the MD midsole comprises the following components in parts by weight: 40-60 parts of EVA, 0-20 parts of ethylene propylene ternary gel, 0-30 parts of polyolefin elastomer (POE), 0-10 parts of talcum powder, 2.0-4.0 parts of a foaming agent, 0.6-1.0 part of a bridging agent, 1.0-2.0 part of a zinc oxide desulfurizing agent, 0.6-1.2 parts of stearic acid, 0.5-1.0 part of zinc stearate, 0.8-1.5 parts of a flow promotor and 0.3-0.8 part of a bridging addition agent.

The invention discloses heat-resisting, damp-proof and environment-friendly paint suitable for furniture plates. The heat-resisting, damp-proof and environment-friendly paint is prepared from, by weight, 10-20 parts of modified phenolic resin, 10-15 parts of thermoplastic acrylic resin, 20-40 parts of alkyd resin, 20-30 parts of modified epoxide resin, 5-10 parts of nanometer calcium carbonate powder, 5-15 parts of nanometer titanium dioxide, 10-15 parts of nanometer zinc oxide, 5-10 parts of pentaerythritol, 30-40 parts of limonene, 1-2 parts of vermiculite powder, 20-40 parts of ethylene glycol and 0.5-2 parts of coupling agent. The heat-resisting, damp-proof and environment-friendly paint suitable for furniture plates is good in damp-proof and heat-resisting effect, safe, environmentally friendly, low in production cost and bright in paint color.