T
TOGWT
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A solvent is a liquid or gas that dissolves a solid, liquid, or gaseous solute, resulting in a solution.
[: when one substance is dissolved into another, a solution is formed; as opposed to a mixture where one compound is added to another and no chemical bond is formed]
There are two main risks associated with using aromatic hydrocarbon solvents; both relating to the effects of solvent on the organic binder of the paint;
(a)The possible extraction (leaching) of low-molecular weight components of the paint binder by the action of the solvent. (b) The more acute element of risk in cleaning, however, is that of swelling of the paint through sorption of solvent. The polymerised urethanes dried oil network may not be truly soluble, but the polymer network may swell by sorption of solvent molecules,. Depending on the degree of swelling, the paint will be more or less softened and its capacity to bind the pigment particles may be affected. In the swollen condition, there is a risk that pigment may be removed from the paint through the mechanical (friction) action of a foam pad.
Note - Aromatic hydrocarbons- are the most toxic compounds found in petroleum products and include such substances as para-xylene (benzene, toluene, ethyl benzene, and xylene) which are all volatile organic compounds
Information resource
1.Wikipedia Encyclopedia- http://en.wikipedia.org
2.The American Solvents Council publications, (ASC) represent major hydrocarbon and oxygenated solvents manufacturers and users.
3.The action of solvents on drying oil films, Parts I & II, Journal of the Oil and Colour Chemists Association by N. Stolow 1957
4.National Petrochemical & Refiners Association (NPRA) publications
5.Automotive Detailing Inside & Out; a Knowledge Base for the Perfectionist, by Jon Miller
6.TOGWT? ? Series of Detailing Articles, by Jon Miller
[: when one substance is dissolved into another, a solution is formed; as opposed to a mixture where one compound is added to another and no chemical bond is formed]
There are two main risks associated with using aromatic hydrocarbon solvents; both relating to the effects of solvent on the organic binder of the paint;
(a)The possible extraction (leaching) of low-molecular weight components of the paint binder by the action of the solvent. (b) The more acute element of risk in cleaning, however, is that of swelling of the paint through sorption of solvent. The polymerised urethanes dried oil network may not be truly soluble, but the polymer network may swell by sorption of solvent molecules,. Depending on the degree of swelling, the paint will be more or less softened and its capacity to bind the pigment particles may be affected. In the swollen condition, there is a risk that pigment may be removed from the paint through the mechanical (friction) action of a foam pad.
Note - Aromatic hydrocarbons- are the most toxic compounds found in petroleum products and include such substances as para-xylene (benzene, toluene, ethyl benzene, and xylene) which are all volatile organic compounds
Information resource
1.Wikipedia Encyclopedia- http://en.wikipedia.org
2.The American Solvents Council publications, (ASC) represent major hydrocarbon and oxygenated solvents manufacturers and users.
3.The action of solvents on drying oil films, Parts I & II, Journal of the Oil and Colour Chemists Association by N. Stolow 1957
4.National Petrochemical & Refiners Association (NPRA) publications
5.Automotive Detailing Inside & Out; a Knowledge Base for the Perfectionist, by Jon Miller
6.TOGWT? ? Series of Detailing Articles, by Jon Miller
