21:43
Anonymous
VARNISHES
Varnish may be the solution of resins or resinous materials like amber, copal, shellac, teeth resin etc. in solvents including oil, turpentile, alcohol etc. Based on the solvents used varnishes are usually classified as,oil varnishes, turpentile varnishes, character varnishes and water varnishes. The desirable characteristics associated with an ideal varnish are
1. It will give glossy surface.
2. Must be durable.
3. It should dried rapidly after application.
4. It will not develop cracks after drying. It is commonly used with wooden surfaces.
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