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Paint stripper or paint remover is a chemical product designed to remove , , and , while also cleaning the underlying surface. Chemical paint removers are advantageous because they act on any kind of geometry and they are cheap. They can however be slow acting.

(2025). 9783527303854

Paint can also be removed using mechanical methods (scraping or ) or heat (, , or ).


Types
The selection of chemical paint removers is based on the chemical bonds that form the paint's binder. Two basic categories of chemical paint removers are caustic and solvent.


Caustics
Caustic paint removers, typically aqueous (also known as lye or caustic soda), work by breaking down the of the paint, usually by of the esters that comprise the paint film. Caustic removers must be neutralized or the new finish will fail prematurely. In addition, as caustic paint strippers typically include corrosive active ingredients, several side effects and health risks must be taken into account in using. Caustic aqueous solutions are typically used by who aim to restore old furniture by stripping off worn , for example.


Solvents
Solvent-base paint strippers can be complex mixtures of various , , thickening agents, alkaline or acid active ingredients as well as evaporation and corrosion inhibitors. , also called methylene chloride, is a popular solvent, but its use has been declining because of health concerns. Traditional solvent paint strippers penetrate the layers of paint and break the bond between the paint and the object by swelling the paint.

Aside from dichloromethane, some popular stripping solvents are N-methylpyrrolidone, dimethylformamide, , and . None of these are .

Paint strippers come in a liquid, or a ("") form that clings even to vertical surfaces.

Solvent strippers may also have formulations with (obtained from orange peels) (or other solvents). is another commonly used solvent. Dimethyl sulfoxide is a less toxic alternative solvent used in some formulations. Unfortunately, these alternative stripping formulas are less effective compared to those based on dichloromethane.


Alternatives
are an alternative to chemical paint strippers. When heated, softened paint clumps and is easier to contain. High-temperature heat guns at or more create toxic lead fumes in lead-based paint,Petit, Georges, and Donald Grant. The manufacture and comparative merits of white lead and zinc white paints. London: Scott, Greenwood & Son;, 1907. 13. Print. This source states that lead vapors are given off around http://www.mediafire.com/view/1xyimc3wdo3/manufacturecompa00petirich.pdf but low-temperature heat guns and infrared paint removers do not create lead fumes.Thomas, Baker, "All About Exterior Paint", "This Old House Magazine" 2012. http://www.thisoldhouse.com/toh/photos/0,,20586187_21145196,00.html Fire is a possible hazard of using heat guns.

Steam can be used on large surfaces or items to be stripped, such as window sash, can be placed inside a steam box.


Safety
A product's material safety data sheet can provides more safety information than its product .

Many traditional paint strippers were or are based on , which can pose serious health risksMacIsaac, J., Harrison, R., Krishnaswami, J., McNary, J., Suchard, J., Boysen-Osborn, M., Cierpich, H., Styles, L. and Shusterman, D. (2013), "Fatalities due to dichloromethane in paint strippers: A continuing problem". Am. J. Ind. Med. doi: 10.1002/ajim.22167 http://onlinelibrary.wiley.com/doi/10.1002/ajim.22167/abstract?deniedAccessCustomisedMessage=&userIsAuthenticated=false accessed 6/1/2013 and is banned in the United States and European Union for consumer use. Despite this, deaths from dichloromethane are extremely rare at fewer than 2.4 cases per year and associated mostly with users applying large amounts in confined, poorly ventilated spaces. When applied in reasonable amounts and with typical levels of ventilation, or outdoors, it is generally safe to use.

Removing old can disperse lead and cause , leading several US workplace and environmental regulations to address removal of old paint that could contain lead.


See also


External links

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