Metallic salts, particularly heavy metal salts of carboxylic acids, such as cobalt, naphthenate, for example, are used in conjunction with drying oils the unsaturated, drying oils polymerize by a reaction mechanism shich.Involved a peroxide intermediate.
The metallic drier salts are oxidation catalysts and promote the oxidation polymerization process. Manufacturing of naphthenate driers using imported naphthenic acid, has been well established for some time in India while the production of octoate driers has just started.
DILUENTS
Diluents of thinners for paint and varnish compositions may include aliphatic or aromatic naphtha fractions or may contain turpentine.
Lacquer employ aliphatic chemicals such as ethers, esters, ketones and alcohols to provide the desired controlled volatility.
India has virtually only natural solvent, viz turpentine. The production of pine oil and dipentene from turpentine has made available aromatic hydrocarbons such as benzene, toluene and xylol. The production of synthetic solvent butly alcohol, butyl acetate and ethyl acetate has commenced in the County.
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