47 results about "Tarnish" patented technology

The invention relates to a silver plating anti-tarnish protectant compound. The protectant compound comprises the following components in percentage by weight: 13 to 15 percent of aliphatic alcohol polyoxyethylene ether, 8 to 10 percent of 1-phenyl-pentasulfhydyl tetrazole, 4 to 5 percent of 2-sulfhydryl benzoxazole, 3 to 5 percent of t-dodecyl mercaptan, 3 to 5 percent of 2-sulfhydryl benzimidazole, 8 to 10 percent of anhydrous ethanol, 8 to 10 percent of ethylene glycol, and the balance of deionized water. The silver plating anti-tarnish protectant compound forms a protective complex film on a silver surface, has a higher corrosion inhibition rate, and obviously improves the sulfidation resistance and abrasion resistance of the silver surface. The silver plating anti-tarnish protectant compound is mainly used for the tarnish prevention of silvered electronic parts and components, and is also applied to the sulfidation and tarnish prevention of silver or silvered jewellery, jewelry, ornaments, artwork, tableware, and the like. The silver plating anti-tarnish protectant compound can effectively protect silvered articles against sulfidation and tarnish in a certain period, keep the original metal luster and has no influence on the conductivity and weldability of the parts.

Systems, methods and articles having a heat-shielding or blocking, heat-dissipating and/or heat signature-reducing material layer or coating are disclosed. In one example, the heat-shielding or blocking, heat-dissipating and/or heat signature-reducing material completely covers the interior of a housing having a plurality of battery cells removably disposed therein. Other examples include a heat-shielding or blocking, heat-dissipating and/or heat signature-reducing material layer having anti-static, anti-radio frequency (RF), anti-electromagnetic interference (EMI), anti-tarnish, and/or anti-corrosion materials and properties that effectively protect battery-operated devices and/or the batteries that power them from damage or diminished operation.

A material for dissipating heat from and/or reducing the heat signature of electronic devices and clothing is disclosed. In one example, a heat-dissipating and/or heat signature-reducing layer is sandwiched between two substrates, wherein the substrates may be flexible, rigid, or a combination of both flexible and rigid. Further, examples of the heat-dissipating and/or heat signature-reducing layer include anti-static, anti-radio frequency (RF), anti-electromagnetic interference (EMI), anti-tarnish, and/or anti-corrosion materials.

The invention discloses a PVD (Physical Vapor Deposition) film on an electronic product metal surface and a preparation method of the PVD film. The PVD film comprises a metal base material, wherein a plurality layers of metal or metal compound films are deposited on the surface of the metal base material; the thickness of the film is 0.1-3mu m; the preparation method comprises the following steps of: selecting a product to be machined as the base material; carrying out pretreatment; coating the film on the base material which is subjected to pretreatment by using a magnetron sputtering machine, namely, firstly, baking the base material at 120-200 DEG C, secondly, carrying out ion cleaning on the base material in the vacuum state greater than 7*10<-3>Pa, wherein the cleaning time is set as 5-10 minutes, and the vacuum degree in ion cleaning is reduced to be about 7*10<-1>Pa; after the ion cleaning is accomplished, and coating the film on the base material in the vacuum state of 6.4*10<-3>Pa, wherein the vacuum degree in coating the film is reduced to be about 2.3*10<-1>Pa. Colors can be coated on the metal surface, such as a golden yellow series, a dark series, silver, coffee, tarnish, a blue series, a purple series and the like; the film layers are solid; the color is variable; in-batch production can be conducted.

Provided is a rolled copper foil or electrolytic copper foil for an electronic circuit to be used for forming a circuit by etching, wherein the rolled copper foil or the electrolytic copper foil comprises a nickel alloy layer with lower etching rate than copper, which is formed on an etching side of the copper foil, and the nickel alloy layer contains zinc. This invention aims to prevent sagging caused by the etching, to form a uniform circuit having the intended circuit width, and to shorten the time of forming a circuit by etching as much as possible, when forming a circuit by etching a copper foil of the copper-clad laminate; and also aims to make the thickness of the nickel alloy layer as thin as possible, to inhibit oxidation when exposed to heat, to prevent tarnish (discoloration) known as “YAKE”, to improve the etching properties in pattern etching, and to prevent the occurrence of short circuits and defects in the circuit width.

An effective tarnish inhibiting (“TI”) polymer composition including a scavenger for hydrogen sulfide optionally in the presence of an acid gas such as sulfur dioxide, provides excellent protection against tarnishing of the lustrous surfaces of a silver object. When the composition is thermoformed into a box-like container or extruded as film which contains uniformly dispersed solid micron-sized particles of the scavenger chosen from zinc oxide and a silicate of an alkali metal in an amount no greater than 5% by weight of the polymer, it is transparent so that the condition of the stored silver may be assessed. A solid inert adjuvant may be added. All solid particles in the material have a primary particle size smaller than 53 μm which makes it possible to obtain the uniform dispersion. A silver object may be wrapped in the film, or stored in a sealed box so that the solid particles in the polymer are not coated on the surfaces of the silver object.

A handbell has a bell body with an inner surface engageable by a clapper to produce a sound corresponding to a note of the musical scale and an outer surface with a vapor deposited nitride layer that resists tarnish. Preferably, the vapor deposited nitrate layer has a thickness of less than about 5 microns and does not adversely affect the sound produced when the handbell is rung. In addition, preferably the vapor deposited nitrate layer is zirconium nitride or titanium nitride and has a Vickers hardness (HV) of at least 2300. A method of making and/or refurbishing a handbell is also disclosed.

Provided is a rolled copper foil or electrolytic copper foil for an electronic circuit to be used for forming a circuit by etching, wherein the copper foil comprises a nickel or nickel alloy layer with a lower etching rate than copper formed on an etching side of the rolled copper foil or electrolytic copper foil, and a heat resistance layer composed of zinc or zinc alloy or its oxide formed on the nickel or nickel alloy layer. This invention aims to prevent sagging caused by the etching, to form a uniform circuit having the intended circuit width, and to shorten the time of forming a circuit by etching as much as possible, when forming a circuit by etching a copper foil of the copper-clad laminate; and also aims to make the thickness of the nickel or nickel alloy layer as thin as possible, to inhibit oxidation when exposed to heat, to prevent tarnish (discoloration) known as “YAKS”, to improve the etching properties in pattern etching, and to prevent the occurrence of short circuits and defects in the circuit width.

The invention provides an environment-friendly nontoxic high-insulation low temperature-resistant polyvinyl chloride cable material which comprises, by weight, 100 parts of polyvinyl chloride, 30 to 40 parts of organic modified kaolin, 50 to 70 parts of a plasticizer, 5 to 10 parts of a stabilizing agent, 5 to 10 parts of a fire retardant, 5 to 8 parts of a low temperature antishock toughening agent and 1 to 3 parts of a lubricant. The invention further provides a preparation process for the anti-tarnish crosslinked polyvinyl chloride material. The environment-friendly nontoxic high-insulation low temperature-resistant polyvinyl chloride cable material provided by the invention has the advantages of low cost for raw materials, environment-friendliness, excellent insulating properties and low temperature resistance and wide application prospects.

An iron-containing metal surface, such as a brushed stainless steel, comprises a heat-set layer of a metal phosphate reaction product formed between a surface metal and phosphate precursor wherein the reaction product layer h an average thickness less than 2 micrometers. A metal surface, that resists retention of environmental stains or marks as well as resisting tarnish at elevated temperatures, is formed by forming a reaction product with the metal surface by heat setting a surface liquid layer containing a phosphate precursor such as a phosphate ester-containing solution or phosphoric acid solution, and optionally containing a phospho alumina precursor, onto the metal surface. An article coated in accordance with this invention is similar in appearance to a similar article without such a coating for maintaining original aesthetic properties.

The invention discloses a red wine hyaluronic acid face mask and a preparation method thereof, and the face mask contains the following components: a red wine, a hyaluronic acid stock solution, a thickening agent and an antimicrobial in a weight ratio of 100:100:5:1. The preparation process of the red wine hyaluronic acid face mask comprises the following steps: (1) selecting a red wine; (2) processing the red wine by hydroxyethylcellulose; (3) mixing the processed red wine and hydroxyethylcellulose together to prepare a mixed solution with a thick and jellied texture; (4) adding a prepared hyaluronic acid stock solution and phenoxyethanol into the mixture obtained in step (3); (5) adding a prepared antimicrobial and a plant essential oil into the mixture obtained in step (4), and shaking the mixture uniformly to obtain the product. After smeared on the face, the mask of the invention can be absorbed by the skin easily, so the mask can increase skin moisture retention, allow the skin to be smooth, tender, and fine, allow the skin color to be red and healthy, slow down the ageing of the skin, and improve the coarseness and the tarnish of the skin caused by ageing; the mask of the invention has the advantages of simple preparation process, antioxidation effect, skin blood circulation promotion, and convenient use.

A filter, an apparatus and a method for preventing and/or reducing the formation of tarnish on objects that contain a metal are provided; for example, objects containing silver, copper and/or brass. The apparatus comprises a device that circulates the air in an enclosed space through particulate and adsorbent filters to reduce the amount of tarnishing agents present in said enclosure.

A chemical filter includes a unit body and an adsorbent housed in the unit body. The adsorbent is for adsorbing a gas. The chemical filter provides a purified gas in which the concentration of ammonia and the concentration of organic gases having a boiling point of about 150° C. or higher, respectively are about 1 ppb(v) or less. This purified gas is applicable for a semiconductor manufacturing system without causing troubles of tarnish and the like.

The invention discloses a preparation method of a pearl with a metal coated film on the surface. Tiny particles in the environment can be extremely easily adsorbed and deposited on the surface of a natural pearl which can be easily subjected to the influence or corrosion of air, light, sweat, cosmetics and the like and becomes yellow and tarnishes. The technical scheme adopted by the invention comprises the following steps: 1) removing oil and dirt on the surface of the natural pearl; 2) vacuumizing a vacuum multi-arc ion coating machine with a vacuum unit; 3) heating the natural pearl, introducing inert gas into the vacuum multi-arc ion coating machine, and performing ion bombardment on the natural pearl; and 4) continuing heating the natural pearl and plating at least one layer of metal coated film on the surface. Through the invention, a stable protection film layer with a dense structure is formed on the surface of the natural pearl, the anti-aging ability of the natural pearl is improved, and the pearl can not easily fade, become yellow or tarnish in the long-time storage and use process; and moreover, the flatness of the pearl surface is improved, and the quality and value of the pearl are effectively upgraded.

An article of cookware in the form of a cooking vessel exposes only a portion of a copper inner layer on the upper portion of the exterior sidewall. The layer does not change color or tarnish as it sufficiently distal from the bottom of the cooking vessel that it is not subject to direct heat and oxidation during normal use. The unique bright color of the native copper is further protected from tarnish caused by fingerprint by a protective coating that can withstand moderate heating.

The invention discloses a staining-resisting artificial quartz stone sheet material. The staining-resisting artificial quartz stone sheet material is prepared from the following raw materials in partsby weight: 15 to 20 parts of 800-mesh quartz powder, 10 to 12 parts of 400-mesh quartz powder, 12 to 15 parts of 80-mesh quartz sand, 18 to 25 parts of 60-mesh quartz sand, 2 to 6 parts of epoxy resin, 1 to 5 parts of polyvinyl chloride resin, 3 to 5 parts of phenol-formaldehyde resin, 0.5 to 2 parts of a pigment, 1 to 2 parts of a curing agent, 0.2 to 3 parts of a coupling agent, 2 to 3 parts ofa first staining-resisting agent and 3 to 5 parts of a second staining-resisting agent. The artificial quartz stone sheet material disclosed by the invention has great staining-resisting performance.The artificial quartz stone sheet material disclosed by the invention is not easy to deform, crack, foam, fade, tarnish and the like, and has the characteristics of low production cost, good decoration effect and no deformation.