Castor oil is a triglyceride of fatty acids. Castor oil is found in castor beans In the seeds, its content is 35% to 57.%. “Castor oil is obtained by squeezing or solvent extraction. It is almost colorless or slightly yellow, clear and viscous liquid; has a slight odor; has a light taste and then is slightly pungent, and is easily soluble in ethanol. , can be mixed with absolute ethanol, chloroform, ether or glacial acetic acid.
There are many derivatives of castor oil. Today, the castor oil supplier will take you to learn about one of them, dehydrated castor oil. :
Dehydrated castor oil is a drying oil formed by a chemical reaction of non-drying castor oil. Most of the fatty acids in dehydrated castor oil are composed of octadecadienoic acid. Contains conjugated di Acrylic acid is its major feature.
Preparation of dehydrated castor oil:
When preparing dehydrated castor oil, under the action of a catalyst, vacuum (230 ~280℃), the reaction removes a hydroxyl group and a hydrogen adjacent to the hydroxyl group, and finally forms a conjugated or non-conjugated diene product. Generally, the higher the diene content, the better the waterproof performance of dehydrated castor oil.
Advantages and applications of dehydrated castor oil:
Dehydrated castor oil is faster drying than linseed oil, and its paint film has good non-yellowing properties, high adhesion resistance, Water resistance, flexibility, hardness, gloss;
Dehydrated castor oil has good flexibility, quick drying, excellent color retention and waterproof properties, and is widely used in the coating and varnish industry;
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Dehydrated castor oil is used as paint, alkyd resin, styrene oil, etc., and is widely used in the production of synthetic resin coatings and printing inks.
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