Drying of oil

drying of oil

1. DRYING OIL

2. DRYING OIL Glycerides of unsaturated acids having 2 or more double bond absorb O 2 from air and get polymerised to form hard tranparent coating which is making paints and oil cloth. Drying oil   is an   oil  which hardens to a tough, solid film after a period of exposure to air(oxidation )

3. Linoleic acid

4. Fatty acid contain conjugate double bond are drying take place more rapidly compared as non conjugate fatty acid Drying process can be achieved faster by addition of driers like salt of mangnese , lead,cobalt etc… DRYING OIL

5. Chemistry of Drying Oil conjugate unsaturated fatty acid ↓ Autoxidation Hydroperoxide + conjugate unsaturated fatty acid (another molecule) ↓ Polymerization stable , some what elastic and Hard transparent coating which is used i n making paint and cloth

6. Classification Drying oil when exposed to air, undergo oxidation and form tough and hard film. These are usually used in paints and varnishes. For example; Linseed oil Non-Drying oil These oils neither undergo oxidation nor form tough and hard film. For example; Olive oil Semi-Drying oil When exposed to air, undergo little bit oxidation and form tough and thin film. For example; Cotton seed oil

7. Applications Low Temperature Fast Curing Coatings for the Surface Treatment of Wood Composites Panels A Realistic Appraisal of Soy Oil Printing Inks Drying Oils or Mediums Used in Oil Painting Selection and Application of Exterior Stains for Wood Microencapsulation of oil in tablete Ex: omega‐3 polyunsaturated fatty acids ( ω‐3 PUFAs),

8. https://youtu.be/hUCsqxeT9zE