A  solvent is a liquid which disperses a solid or semi  solid substance so as to yield a useful solution.

The application of a solvent or thinner in the production of paints  or  varnishes is highly essentials in order  to  obtain a useful solution.  In the solution formation dispersion of  solids to liquid phase takes place.  Example the addition of linseed oil to  hexane, to glycericles present in the oil disperse forming  a viscous solution.

A wide range of solvents possessing specific properties  are now used in formulations containing synthetic resins.   According to  their boiling range, solvents are classified as  low  boilers (B.P.<  100oC)  medium boilers (B.P. 100-120o), and  high  boilers (B.P.) 150o.

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N.C.  THINNER  is  a mixture  of  esters,  glycol,  alcohol, aromatic  solvents  and ketones suitable diluents  to  all  nitro products.  It is manufactured for reducing lacquers  before  they are applied by different methods.

Solvents  or  Thinners are used in Paints  and  lacquers  to reduce   the  viscosity  or  consistency  of  the  material   and facilitate  the  application of a uniform coating. They  must  be compatible  with the oil or resin present. After application  the solvent  is  no longer required and should  evaporate  completely from the film.

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Solvents  or  Thinners  are used in Paints  and  lacquers to reduce   the  viscosity  or  consistency  of  the  material   and facilitate  the application of a uniform coating.  They  must  be compatible with the oil or resin present.  After application  the solvent  is  no longer required and should  evaporate  completely from the film.

Another  class of organic liquids used in paint industry  is plasticizers their function is to remain permanently in the  film of  paint  or  varnish  after  application  in  order  to  impart elasticity  and proper adhesion to it.  In contradiction  to  the volatile solvents, plasticizers should be perfectly non-volatile, and should also be chemically stable, and not after in properties on prolonged exposure.

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