|
Metallic
carboxylates, metal salts of carboxylic acids, have industrial
applications in.
Drier/Additive
for paints, coatings and inks; Driers are substances put into paint to
make dry quickly. They are metallic salts of low-molecular-weight
(chiefly C8) fatty acids or naphthenic acids. Naphthenic acid is a
complex of carboxylic acids (various low-molecular-weight fatty acids
believed to have cyclopentane ring mainly). Hydrocarbon parts take oxygen
in air and metals act as catalyst to speed up the oxidative coating.
Cobalt is the most useful. It is a powerful oxidation catalyst and can
keep whiteness. Auxiliary metals should be added to prevent surface
wrinkling after drying. Primary metals, which can replace for cobalt, are
zirconium, lead, cerium and iron and auxiliary metals are like calcium,
manganese, barium, zinc, and lithium.
Catalyst
for chemical reactions (polymerization, esterification, oxidation,
condensation, hydrogenation and other reactions) and catalystic special
applications in lubricant and grease additives, fuel combustion additives
to enhance and stabilize the performance of fuels.
Rubber
Adhesion Promoters; Metallic naphthenates, neodecanoates, resinates,
boroneodecanoates, and stearates are widely used in rubber industry
especially in the radial tire industry to promote adhesion between the
rubber wire coat compound and the brass-coated steel belt. Cobalt
carboxylates are most widely used.
Polyurethane
catalysts: Tin, bismuth, mercury, zinc carboxylates and their blends with
amines are used as catalysts in the production of rigid, flexible
polyurethanes and elastomers.
Unsaturated
Polyester Promoters: Cobalt, Potassium, Copper, and Zinc carboxylates
(mainly octoates and naphthenates) are used as initiators/promoters for
curing of polyester resins.
|
|
