Corrosion Prevention Systems for Packaging

Laminated film for packaging applications that prevents dissolution of the aluminum barrier layer when storing acidic or alkaline materials. The laminated film has a barrier layer with a coat layer of aluminum particles loaded with a water-soluble polymer and metal alkoxide or silane coupling agent. The barrier layer and adjacent layer are made of the same resin. This protects the aluminum particles from direct contact with the contents, preventing dissolution. The coating material fills gaps in the aluminum layer and shields it from contents infiltration.

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Gas barrier laminate and packaging bags with improved water vapor barrier properties when using aluminum-coated paper. The laminate has a paper base, aluminum vapor deposition layer, and heat seal layer. The heat seal layer contains a polyolefin with carboxy groups. To prevent aluminum corrosion and water vapor barrier deterioration, the ratio of salt vs carboxy group peaks in the heat seal layer IR spectrum is 0.1 or less. This indicates minimal residual salt from the coating process. By avoiding excess salt formation, the heat seal layer remains neutral and suppresses aluminum corrosion. This prevents water vapor barrier degradation over time.

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Laminated films and packaging bags with improved resistance to dissolution of aluminum particle coatings when stored with acidic or basic contents for long periods. The laminated films have a barrier layer sandwiched between adjacent layers. The barrier layer has a coating layer of aluminum particles. But instead of just aluminum, the coating also contains a loading material composed of a water-soluble polymer like PVA, metal alkoxides, silane coupling agents, or their hydrolyzed forms. This loading material fills the gaps between the aluminum particles. It protects the aluminum particles from dissolution when acidic or basic contents infiltrate the laminated film and contact the coating layer.

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A semiconductor packaging technique that improves reliability of power semiconductor packages, particularly for next generation devices like SiC, GaN, and Ga2O3. The technique involves modifying the solder interface between the semiconductor element and substrate to prevent delamination and cracking. The modification involves using a specific solder alloy composition, thin film stack sequence, and solder geometry to reduce diffusion of elements like Ni and Au into the interface. This prevents peeling and degradation of the bond strength between the semiconductor and substrate during repeated heating and cooling cycles. The modified solder interface provides improved reliability for power semiconductor packages operating at higher temperatures and currents.

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Coating compositions for food and beverage containers that do not contain extractible quantities of compounds like BPA, Bisphenol A glycidyl ether, PVC, or styrene. The compositions are self-crosslinking or crosslinkable acrylic copolymers that can be applied to packaging substrates using spray coating techniques. The copolymers are made from styrene-mimicking monomers containing cyclic groups and ethylenically-unsaturated pendant groups, with at least some of the styrene-mimicking monomers being polycyclic compounds with ring unsaturation. This allows styrene-like properties without the use of styrene itself. The compositions can provide coatings with desirable properties like blush resistance, corrosion resistance, pot life stability, and initial metal exposure when applied to food and beverage

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Coating composition for packaging containers that comes into contact with food, like cans, that provides improved adhesion, resistance to staining, corrosion, opacity, and solvents. The coating composition includes a polyether polymer with a number average molecular weight of at least 2,000, preferably in a film-forming amount. The polyether polymer has segments of formula I: [CH2]x-Ar-[CH2]y, where Ar is an aromatic or heteroaromatic group, x and y are integers. The coating composition can also contain crosslinking agents and solvents.

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Coating powder for metal packaging that provides a superior alternative to liquid coatings for rigid metal packaging applications. The coating powder has small particle size (<25 microns) and high molecular weight polymers (>2000 Daltons) to improve adhesion, corrosion resistance, and aesthetic properties. The powder coatings are applied in a powder-on-powder process where multiple different coatings are layered on the substrate. This allows customization of properties like hardness, flexibility, and color. The coatings can be applied using conductive rollers and electrographic methods. The powder coating system reduces waste and exposure compared to liquid coatings.

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Highly resistant packaging laminate with improved content resistance, metal corrosion prevention, and cuttability. The laminate has a structure with layers in order: base, melt-extruded, metal, melt-coextruded, sealant. The melt-coextruded layer has an acid-modified polyethylene on the metal side and low-density polyethylene on the sealant side. This sandwich structure provides resistance to contents without corroding the metal and prevents delamination. The low-density polyethylene in the sealant layer improves cuttability compared to conventional adhesives. The acid-modified polyethylene has a specific maleic anhydride graft ratio and density range.

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Gas barrier laminates, packaging bodies, and packaged articles with improved oxygen barrier properties after moist heat treatment like retorting or boiling. The laminates have a coating layer containing a carboxy group-containing polymer and polyvalent metal-containing particles. The particles have a specific metal element loading range. This prevents sulfur from bonding with the polymer during heating, avoiding barrier degradation. The coating also has optimized metal loading, absorbance, and film thickness for high oxygen barrier.

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Coating composition for metal packaging with improved properties like solvent resistance, acid resistance, retort resistance, microcracking resistance, and bending ability. The composition contains a specific TMCD polyester polyol with targeted mole percentages of TPA, TMP, and hydroxyl number. The polyol has a glass transition temperature (Tg) of 50-110°C, number average molecular weight of 5,000-20,000 g/mol, and acid number of 0-10 mgKOH/g. The composition also includes a phenol-formaldehyde resole resin and amino and is

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Aerosol solution formulation for pressurized inhalers like pMDIs used to treat respiratory conditions. The formulation contains a combination of drugs like glycopyrrolate, formoterol, and inhaled corticosteroids like beclomethasone. The drugs are stabilized and maintained at effective levels by formulating them in stainless steel cans instead of coated aluminum cans. The stainless steel avoids degradation issues with coatings during storage and transportation.

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Polyester coating for metal packaging applications that replaces epoxy coatings for food and beverage cans. The coating composition contains a specific polyester polyol made from monomers like IPA, TPA, sebacic acid, 1,3-cyclohexanedimethanol, and trimellitic acid. This polyester polyol is combined with a resole phenolic resin and other components like catalyst, solvent, and curing agents to form the coating. The polyester polyol provides flexibility and adhesion while the phenolic resin adds corrosion resistance. The coating composition is used in metal packaging applications like can linings to replace BPA-containing epoxy coatings.

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Packaging material for hair dye that prevents corrosion, leakage, and label damage. The packaging has three layers: a protective layer with the printed instructions, a light-shielding layer between the protective and sealing layers, and a sealing layer. The light-shielding layer blocks light to prevent hair dye degradation. The sealing layer resists corrosion from the dye. This prevents leaks, label damage, and dye degradation compared to bottles.

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Export packaging case with enhanced durability and rust prevention by injecting rust prevention oil into the interior of a rust prevention panel and absorbing it into the exterior. This provides continuous rust protection during long-term shipping. The panel is made of wooden boards with center bars spaced apart. One end is closed with a cylindrical block and oil is injected. The other end is closed. This prevents rust from spreading through the panel during transportation.

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Gas barrier packaging material with improved adhesion between the gas barrier layer and the base after retort processing. The material has a base with an inorganic surface, like alumina, and a cured resin layer made from an epoxy resin composition containing an amine-based curing agent and an acidic compound. The composition's basic nitrogen to acid group ratio is 0.60-20. This range improves adhesion between the base and cured layer after retort processing compared to normal epoxy compositions. The acid neutralizes amine groups in the epoxy, preventing corrosion of the base during retorting.

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Dense laminate, package, or film with improved barrier properties using a polyolefin resin base material. The laminate has a polyolefin film sandwiched between an inorganic layer and a coating layer. The coating layer contains metal alkoxides and/or polycondensates thereof, along with a modified polyvinyl alcohol resin. The metal alkoxides are mixed with other metal chelates to balance stability and reactivity. The coating layer has a specific ratio of peak intensities detected by FT-IR-ATR analysis, P1/P2 = 3.5-8.0, to suppress deterioration during processing. This coating layer also has a specific ratio of peak intensities detected by TOF-SIMS, m/s = 0.05-10.00, to suppress coating layer cracking. The

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Laminated film for packaging that prevents dissolution of the aluminum barrier layer when filled with acidic or alkaline contents for long periods. The film has an aluminum particle layer sandwiched between barrier and adjacent layers. The barrier and adjacent layers contain the same resin. The aluminum particle layer is protected by a filler between the aluminum particles. This filler is a water-soluble polymer with compounds like metal alkoxides and silane coupling agents. The filler prevents content permeation from reaching the aluminum particles and dissolving them.

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A canister for preventing corrosion of precursor vaporizer systems used in semiconductor manufacturing, particularly when using corrosive precursors containing chlorine. The canister has a carbon coating layer applied to at least the inner surfaces in contact with the precursor. This prevents corrosion of the stainless steel canister during high-temperature reactions with chlorine-containing precursors. The carbon coating forms a barrier to prevent chemical reactions between the precursor and canister materials.

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A canister for preventing corrosion inside the canister when using certain precursors that cause corrosion in stainless steel canisters. The canister has a carbon coating layer applied to at least the inner surfaces that contact the precursor. This prevents chemical and physical interactions between the precursor and the canister that can cause corrosion at high temperatures.

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Packaging bags for strongly basic contents like hair dyes that have a gas barrier layer made of aluminum foil or aluminum alloy foil with a modified surface to prevent corrosion and pinholes when containing strong bases. The gas barrier layer is laminated with an adhesive layer containing a modified isocyanate compound to improve adhesion. A light-shielding layer covers the opposite side of the gas barrier to conceal any corrosion or discoloration. The transmission density of the light-shielding layer is 1.09-5.52. This prevents visible damage from oxygen or contents.

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