370results about How to "Reduce discoloration" patented technology

Disclosed is a light emitting diode (LED) package employing a lead terminal with a reflecting surface. The package includes first and second lead terminals that are spaced apart from each other. The first lead terminal has a lower portion with an LED chip mounting area, and at least one reflecting surface formed by being bent from the lower portion. Meanwhile, a package body supports the first and second lead terminals and forms a cavity through which the LED chip mounting area and the reflecting surface of the first lead terminal and a part of the second lead terminal are exposed. The first and second lead terminals extend outside of the package body. Accordingly, light emitted from an LED chip can be reflected on the reflecting surface with high reflectivity, so that the optical efficiency of the package can be improved.

The invention discloses an organic silicone resin, a curable organopolysiloxane composition and an application. A structural formula of the organic silicone resin is shown as formula I. The curable organopolysiloxane composition is obtained by mixing the organic silicone resin with an organic silicone compound having at least two hydrogen atoms bonded with a silicone atom in one molecule. The curable organopolysiloxane composition can be applied on luminescent semiconductor package. The curable organopolysiloxane composition has the following advantages of excellent adhesive property, relatively strong hardness, excellent impact resistance, high transparency, little color change in a heat resistance test and high luminescent efficiency. Besides, the curable organopolysiloxane composition is not easy to peel off in a thermal shock test and presents excellent adhesive power in adhesive experiments with PPA and metal. The formula I is R1R22SiO(R3SiO3/2)a(SiO4/2)b(R42SiO)cOSiR22R1.

The invention provides antimicrobial compositions comprising one or more acid and one or more organic diol. In one embodiment, the invention's compositions have an acidic pH. The compositions may optionally further contain one or more oxidizing agent (including stabilized oxidizing agent and/or unstabilized oxidizing agent), and/or one or more surfactant. In particular embodiments, the acid lacks one or both of —NH group and —NH₂ group. The invention's compositions are useful in all stages of handling agricultural products, in hospitals, and in commercial and household applications.

A lighting device (100, 200, 300, 400) is disclosed. The device comprises a plurality of light sources (111, 119, 120, 211, 219, 220) providing light in different wavelengths, a collimating means (104, 204) having a receiving end (103, 203, 407) and an output end (114, 214, 409), wherein said light sources are arranged at said receiving end. The collimating means comprises a set of wavelength selective filters (109, 110, 115, 116, 117, 118, 215, 217) arranged as sub-collimators (106, 107, 108, 206, 207, 208) to each of said plurality of light sources such that, for each light source, said sub-collimator collimates the light from its light source, and said wavelength selective filter of said each light source is translucent for light from adjacent light sources of different wavelength, wherein said wavelength selective filters are high pass or low pass filters.

A bar soap comprising a pyrithione source, a soap surfactant, and a pH adjusting agent selected from a group consisting of ammonia solution, triethanolamine, diethanolamine, monoethanolamine, potassium hydroxide, sodium hydroxide, soluble carbonate salts, and combinations thereof, wherein the bar soap attains a pH of greater than or equal to 10.7. A process of inhibiting the formation of a discoloration in a bar soap comprising pyrithione sources by adding pH adjusting agent to attain a pH of greater than or equal to 10.7. A process of inhibiting the formation of a discoloration in a bar soap caused by dissolved ferric ions and/or cupric ions and pyrithione sources in the bar, comprising the step of adding from about 0.3% to about 20% soluble carbonate salt during manufacturing of the bar soap.

The invention discloses a composite reagent for deep removal of heavy metals in wastewater and a preparation method thereof. The composite reagent is prepared from the following raw materials in parts by weight: a component A including 20-30 parts of modified attapulgite powder, 30-50 parts of a modified natural high molecular polymer and 0-3 parts of a surfactant; a component B namely an inorganic flocculating agent, wherein the weight ratio of the component A to the component B is (2.5-8.3):1. The composite reagent disclosed by the invention has very strong adsorption, chelating and flocculation performances on heavy metal ions in water, has a plurality of effects of auxiliary reduction of COD (chemical oxygen demand), decoloration, dephosphorization and the like at the same time, and is good in treatment effect, and the preparation method is simple and easy.

The invention relates to a glass fiber reinforced plastic cable channel cover plate and a production method thereof. The cover plate is a rectangular hollow belly structure, longitudinal stiffening ribs are arranged in the hollow belly of the cover plate and the upper surface of the cover plate is provided with strip-shaped antiskid grains; the invention comprises the following raw materials: unsaturated polyester resin, curing agent, packing, polyvinyl alcohol solution, pigment, fiberglass roving and fiberglass felt; the invention comprises the following steps: (1) arranging a tooling equipment on an extrusion molding machine; (2) mixing and pouring the raw materials in a resin tank; and (3) inducing the fiberglass roving and the fiberglass felt through immersion, a performing device, a forming device, curing and cutting. The cover plate has high strength, smooth surface, neat and beautiful appearance, corrosion resistance of alkali, acid, petrol and the like, aging resistance, long service life without pulverization, discoloration, crack, deformation and the like. The invention ensures the safe operation of cables and prolongs the service life of the cables.

Calculation of GR and GB color ratios in a local area uses a weighted average filter having weighting coefficients where the ratio of total sums of weighting coefficients for G and R pixels is 1:1, and weighted average filter having weighting coefficients where the ratio of total sum of weighting coefficients for G and B pixels is 1:1, respectively, on pixel lines in a horizontal direction and a vertical direction in a kernel. R and B pixel values are then calculated by interpolating the pixel value of a pixel to be processed with the G pixel value at the pixel position to be subjected to a demosaic process and the color ratio.

The invention discloses an antibacterial flame-retardant ABS material and a preparation method thereof. The antibacterial flame-retardant ABS material is prepared from ABS resin, a flame-retarding agent, a coordinative flame-retarding agent, an auxiliary flame-retarding agent, a thermal stabilizer, an antibacterial master batch, a compatilizer, an antioxidant and a lubricating agent in parts by weight, wherein the antibacterial master batch is prepared from ABS and at least one of a silver ion type antibacterial agent, zinc oxide and copper oxide by a mass ratio of 10 to 1. According to the ABS material disclosed by the invention, the silver ion type antibacterial agent or the zinc oxide or the copper oxide and the ABS are used for preparing the antibacterial master batch by the mass ratio of 10 to 1, so that the silver ion type antibacterial agent or the zinc oxide or the copper oxide is effectively uniformly dispersed in the ABS resin in order to improve the antibacterial efficiency and achieve a better antibacterial effect than an antibacterial agent which is used independently; and color changes of antibacterial ABS plastic can be effectively prevented, and the antibacterial properties of the antibacterial ABS plastic can be improved.

The present invention relates to one kind of free machining high manganese Cu-Zn alloy, which consists of Cu 45- 70 wt%, Mn 7-30 wt%, Pb 0.2-4 wt%, X 0.0001-2 wt%, and Zn and inevitable impurity for the rest; where, X is at least one of elements Fe, As, P, B, Cr, Li, Ni, Sn, Al. The free machining high manganese Cu-Zn alloy has free machining performance similar to that of lead brass, lowered material cost and excellent plastic working performance, and may be used in producing plastic worked product and cast product.

A pneumatic tire has a rubber member at least partially constituting a tread portion, which member is formed of at least two layers of an outer layer on a tire surface side and an inner layer on a carcass side. A blended amount (X) of an antioxidant in the outer layer is in a range of 0.4–1.6 weight % of an entire composition, and the blended amount (X) of the antioxidant in the outer layer and a blended amount (Y) of the antioxidant in the inner layer satisfy the expression: Y≧−0.4 X²+2X. Thus, a pneumatic tire suffering less rubber degradation and alleviated in discoloring of the tire surface in prolonged use is provided.