Methylene chloride methanol ammonium hydroxide stripper

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Different from conventional remover solutions which only can swell cured photoresist compositions, the inventive remover solution has a power to completely dissolve a cured photoresist layer to give a quite satisfactory result in the removing works of patterned photoresist layers in the manufacture of semiconductor devices. Share Patent Tools. The remover solution as claimed in claim 1 wherein the quaternary ammonium salt as the component C is selected from the group consisting of tetramethyl ammonium hydroxide, trimethyl hydroxyethyl ammonium hydroxide, tetra hydroxyethyl ammonium hydroxide and methyl tri hydroxyethyl ammonium hydroxide.

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Paint stripperor paint removeris a chemical product designed to remove paintfinishesand coatings while also cleaning the underlying surface. The product's material safety data sheet provides more safety information than its product labels. Paint can also be removed using mechanical methods scraping or sanding or heat hot airradiant heator steam.

There are lots of chemical finish removers available at the local hardware store. This article is designed to help sort out some of the more common ingredients. This article will discuss the various chemicals and chemical combinations used in modern paint and varnish removers.

The invention provides a paint remover for removing epoxy primer and a polyurethane finish coating and aims to provide the paint remover which is low in toxicity, low in pH value, and high in paint removal rate, does not corrode metal substrates, and particularly can remove a paint coating on a straightener blade of a stator of an aircraft engine quickly. According to the technical scheme, the composition mainly comprises the following components in percentage by weight: 45 to 55 percent of N-methylpyrrolidinone, 15 to 25 percent of cyclohexanone used as a main solvent, 8 to 12 percent of methanol or ethanol which is used as a cosolvent, 8 to 12 percent of any of ethanol amines, which is used as an accelerant, 8 to 12 percent of glycol ethylene ether used as surfactant and a small amount of thickening agent and volatilization inhibition agent. The paint remover has capacity of quickly eliminating the binding force, adhesion and solvent resistance of the surface of the paint layer, is low in toxicity, does not corrode metal and plastic substrates, does not pollute environment when produced, can control the corrosion effect on the substrates well, and can quickly remove the epoxy primer and the polyurethane finish coating of the surface of a stainless steel assembling unit.

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A fluid or paste formulation designed to remove dried paint or varnish. Commercial paint strippers generally use systems based on either solvents or alkalis. Most of the solvent strippers use methylene chloride. It is an effective solvent that penetrates and swells oilalkydand vinyl paints and most varnishes.

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Finishes such as lacquers, polyurethanes, epoxies, acrylics, and baked enamels can be conveniently and effortlessly removed with this paint remover. Known to show results within five minutes of application on paints that are not stubborn, this paint remover can go deeper into the topcoats to strip them. Hence, it lifts several layers and adheres well on vertical surfaces.

Amine, carboxamide, or metal hydroxide or alkoxide component e. Composition for stripping coatings from substrates. Patent number: Abstract: A composition for stripping and cleaning organic coatings from substrates, comprising a solution of high-boiling alcohols, preferably polyglycols, a surfactant, preferably a nonylphenol ethoxylate, and an alkali metal hydroxide, said composition being essentially free of any amines.

Comments

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