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General
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Hydrogenated castor oil (HCO) or castor wax is a hard, brittle wax that
is insoluble.
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The HCO is
insoluble in water and most organic solvents, but it is soluble in hot
solvents.
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HCO is
available in 50-pound paper bags or 2,200-pound super sacks.
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Partially
hydrogenated castor oil is available in fiber drums.
Process
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It is
produced by adding hydrogen in the presence of a nickel catalyst. It is
mainly used for coatings and greases where resistance to moisture, oils
and other petrochemical products is required.
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In the
hydrogenation process, the ricinoleic acid becomes fully saturated and
forms a viscous wax-like product with a high melting point of 86°C,
which makes HCO valuable in resin and polymer mixtures.
Application
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Hydrogenated castor oil used in the manufacture of multipurpose
Lithium/Calcium grease and high performance aviation grease.
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The early
use of HCO in greases was to improve texture and oxidative stability of
greases exposed to high sheer stress with little effect on structure or
consistency.
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Hydrogenated castor oil used for the manufacture of soaps & cosmetics.
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It is used
as a mould release agent in the processing of plastics and rubbers.
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It is also
used as a Rheological agent that provides thixotropy in paints,
coatings, inks, adhesives, sealants and numerous industrial composition.
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It can be
used for the manufacture of hot melt adhesives used in packaging books,
binding footwear, carpet backing and in product assembly, Anti-tack and
slip additives for processing plastics .
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It is used
in the manufacture of speciality chemicals for applications such as
metal working, plasticizers and textile auxiliaries in the form of
derivatives such as esters, ethoxylates, sulfates etc.
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