COBALT : It is a primary surface drier and generally used
in combination with other metals. The strong surface drying property
is used with advantage in wrinkle finishes. |
CERIUM : This rear earth drier promotes through
drying and also good in polymerisation action. It is superior to
zirconium, lead. It has tendency to yellow and promotes skin formation
in the container. |
LEAD : This drier helps in through drying
and also polymerisation. It has a tendency to form haze in alkyds
and is to be used with calcium. |
CALCIUM
& ZINC : These are auxiliary
driers and quite good in presence of active driers like cobalt,calcium
prevents haze formation of lead in alkyd. Zinc acts as rotprofing
agent. Both driers are powerful dispersing and wetting agents for
pigments. |
IRON : It has a very little action in air
drying finishes. It is very active in stoving finishes and for B.N.S.L
& C.N.S.L finishes. |
COPPER : Copper posses considerable fungicidal
and insecticidal properties. It protects timber, plywood, fabrics,
tarpaulins.The % normality retained should be 0.5 Cu. It is also
available in emulsifiable concentrate, which can be diluted with
water. |
ZIRCONIUM : This drier can be used to replace lead . It is
to be used with cobalt . it gives better colour and retention. |
POLYSTERS : Range of polyester resins suitable
for fibre glass moulding, lamination grade and other are produced.
NARCHEM polyester catalyst is used with organic peroxides to accelerate
curing of polyesters. |
LUBRICANT |
ADDITIVES :Extreme pressure sensitive additives for gear oil
and greases , rust inhibiting products are offered. |
PRESERVATIVES : In can container and for interior & exterior
surface for oil bound distemper, emulsion paints
NOSKIN : Antiskinning agent to prevent Skin formation in container. |
NARSPERSE : The unique dispersing agent for heavily
loaded pigments like fat oil paints and wood, cement redoxide primers
. |
NARPACT
PASTE : Excellent loss of
dry inhibitor on storage to be added during mil base grinding can
be used 0.5% to 2% on pigments used in paints like red black, white
etc. |
In addition to the above
mentioned driers we also offer carboxlates of nickel , lithium ,
potassium , chromium , silver , gold and others. |
HOW to calculate the
requirements of drier. |
% Solid alkyl
enamel X |
%metal
required |
= Drier required |
% metal in drier |
|
suppose the solid alkyd
in enamel , then assuming that 6% of Co is to be used to the extent
of 0.03% on 100 % solid alkyd then
(30 x 0.03)/6 = 0.15 i.e. for enamel containing 50% of solid
and 60% of alkyd we 6 require 0.15 of 6% cobalt drier. |
