Engineers India Research Institute

The physical property in the paint has very importance to ensure its colour which should not fade and to be discoloured in any case which is a creditable property.
The painted surfaces should be of washable condition. The films which are produced by the painting, when dried when dried well should be of cleaning condition in case of change, the
colour and other things extra.
  
         Varnish  making is a skilled  are  which,  for  many  years, had a place as one of the necessary and outstanding industries in the united states and Europe. Recent years have seen this industry grow  by leaps and bounds because of the development of many new
raw materials which are adapted to varnish making.

     A  paint  is a stable dispersion of  opaque  or  semi-opaque substances (pigments or finely-divided metals) in a fluid medium, which  is suitable for coating surfaces uniformly by means of  a brush or spray painting machine or by dipping and roller coating and which dries to form a continuous film performing one or  more of the functions of obliteration, protection and decoration. 
     Though paints have been in use from times  immemorial, the paint  industry as it is known today is of  comparatively recent origin. It was only in the middle of the nineteenth century  that
the  ready-mixed  paints  started coming in to  the  market. The demand  for the wide range of specialized products, such  as for coating  manufactured articles of various kinds, for increasing
chemical  resistance, for the prevention of decay and  corrosion, for  sanitation,  prevention of accidents, and so on, started increasing. To keep pace with the demand, the paint industry has
had to broaden and diversify its  products. The indian paint industry has  been able  to meet all these demands successfully. It is not  possible to  discuss  all  the important uses to which paint  is  put  for different  purposes  viz.,  decoration,  protection,  sanitation, greater illumination, insulation, safety etc.