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PIGMENT
E
A Nav Corrosion Inhibitive Pigment
TOR USE IN PROTECTIVE COATINGS
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NATIONAL l-KAl) COMPANY
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PIGMENT E
PIGMENT E is a new and improved corrosion inhibitive pigment for general purpose use. It is barium potassium chromate [BaK2 (004)2] and possesses a desirable combination of properties, most important of which is its ability to release the soluble chromate ion (004)= in media that ordinarily cause corrosion.
PIGMENT E functions by virtue of its controlled release of the water soluble chromate ion. Because this release is controlled, the available chromate ion will effectively prevent corrosion longer than is the case with other chromate-type inhibitive pigments. Extensive field tests have clearly demonstrated the effectiveness of PIGMENT E in many different metal protective coating materials.
Advantages of "Pigment E"
GREATER EFFECTIVENESS. PIGMENT E yields 20% to 25% more of the readily available soluble chromate than is yielded by other soluble chromate-type pigments. This effective soluble chromate portion has controlled solubility, so that after the initial rapid release, which is small, the remainder of the soluble chromate is available over a long period of time.
UNIFORM COMPOSITION. PIGMENT E has a definite chemical composition. It is barium potassium chromate BaK2(Cr04)2.
HIGH PURITY. The method of manufacture of PIGMENT E makes it pos sible to exercise a very complete control of its composition. In addition to its definite uniform chemical composition, PIGMENT E is produced substantially free of detrimental soluble chlorides and sulfates.
COMPATIBILITY. PIGMENT E is compatible with other pigments and is usually used in such combinations for metal protective paints. It is also compatible with all paint vehicles in current use, typical of which are the following:
Al k y d s
Ph e n o l ic s
COUMARONE-INDENE
Po l y me r iz e d t e r r e n e s
Mo d if ie d r o s in
NATURAL RESINS
CHLORINATED RUBBER
EASY GRINDING. PIGMENT E is a soft-textured pigment comparable to 2 on Moh's scale. This accounts for its ready grindability, which is a distinct advan tage in the preparation of paints.
GOOD PACKAGE STABILITY. Because of the stability of PIGMENT E with various vehicles, PIGMENT E paints have exceptional package life.
TINTING STRENGTH. The low tinting strength and low hiding power of PIGMENT E has many advantages. For example when used with pigments of high hiding power their characteristic colors are not appreciably affected. Therefore, coatings of any desired color may be obtained with PIGMENT E.
ECONOMICAL. PIGMENT E is economical to use, which factor will stimu late many new uses for such a paint pigment.
Uses for "Pigment E"
PAINTS
PIGMENT E is suggested for use in metal protective paints including those for the priming of steel and light metal alloys of aluminum and magnesium. Low cost and good performance make it particularly suitable in metal protective paint systems for atmospherically exposed surfaces such as railroad cars, tanks, general metal construction, appliances, and machinery. Paints may also be formulated with combinations of PIGMENT E and red lead as these two pigments are completely compatible.
NLI 115409
It is further suggested as a corrosion inhibitive additive to metal leafing paints, such as aluminum paint. Due to its low tinting power, as much as 2.0 pounds of PIGMENT E may be used for each 2.0 pounds of aluminum leaf paste, per gallon of vehicle, in primary coats.
As a combination primer-finish coat, PIGMENT E may be used with aluminum to advantage. In such paints where leafing is most important, one pound of PIG MENT E per gallon is suggested. Where corrosion inhibition rather than brightness of film is most important, more may be used.
Due to its low tinting strength, PIGMENT E can provide a variety of com bination primer-finish coats for metal office partitions, metal furniture and other metal products of this general type.
Other Suggested Uses
PIGMENT E is suggested for other end usages where a gradual release of chromate ion is desirable in arresting corrosion.
PIGMENT E is suggested as an additive to oils and greases, for applications in which these lubricants must afford maximum resistance to the corrosive effect of moisture. In this usage, the extreme softness of PIGMENT E (approximately 2 on Moh's scale) is significant, since bearing surfaces will not be affected mechanically by its inclusion.
TABLE OF PROPERTIES
Color ..............................................Pale Yellow
Specific Gravity
3.65
Bulking Value (gallons per pound)
0.0329
Weight of one solid gallon (pounds) ................................ 30.4
Oil Absorption (grams per 100 grams)....... 11.6
Refractive Index........................ 1.9
Barium Oxide (calculated to BaO) ............. 34.2%
Alkali Oxides
(calculated to K20)
21.0%
Chromium Oxide
(calculated to C1O3)
44.6%
Combined Water
None
Total Chlorides, as Cl
0.015%
Water Soluble Chlorides, as Cl. 0.004%
Total Sulfates, as SO4
.13%
Water Soluble Sulphates,
as SO4....................................... 0.05%
pH (water slurry of pigment) 8.0
Organic colors and lakes . .None
Typical Formulations
In order to illustrate the versatility of PIGMENT E, a few typical formula tions are given below. This new pigment can be used in many types of metal protective paints. The formulations show a range of drying times and a variety applications.
General Purpose Primer
Dry to handle and Re-coat -- 24 hrs.
Formula M6685
Per Cent
Pounds
Gallons
56.6% Pigment
"Pigment E" Iron Oxide (85% Fe203) Magnesium Silicate
30.0 35.0 35.0
223.8 260.0 260.0
7.46 6.99 10.92
43.4% Vehicle
Raw Linseed Oil Alkyd Resin Solution* Petroleum Spirits
and Driers**
34.0 48.5
17.5
193.4 276.0
99.5
25.02 34.94
14.67
1312.7
Weight per gallon
13.1 lbs.
PV = 35.0
Per Cent Volatile in the vehicle by weight = 32.0
100.00
'Federal Specification TT-R-266, Type II, Claes A.
`Driers: 0JS% Lead,0.05% Cobalt,0.05% Manganese based on vehicle solids.
NLI 115410
Fast Drying Metal Primer
Dry to handle and Re-coat -- 18 hrs.
Formula M5478
47.0% Pigment
( "Pigment E" I Iron Oxide (85% Fe2U3)
[ Zinc Oxide l Magnesium Silicate
53.0% ) Alkyd Resin Solution* Vehicle ( Thinner and Driers**
Per Cent
25.0 45.0 10.0 20.0
76.5 23.5
Pounds
138 249
55 111
476 147
Cations
4.55 6.71 1.19 4.65
61.04 21.86
1176
100.00
Weight per gallon
11.7 lbs.
PV == 35.0
Per Lent Volatile in the vehicle by weight == 54.1
Soybean oil glyceryl phtbalate alkyd resin 30% "Driers: 0.5% Lead, 0.05% Cobalt, based on v<
phthalic anhydride; 60% solids in mineral spirits.
solids.
"Pigment E" -- Red Lead Primer
Dry to handle a nd Re-coat -- 24 hrs.
Formula M6713
62.0% Pigment
"Pigment E" Red Lead (97% Grade) Iron Oxide (85% Fe203) Magnesium Silicate
38 0%
f Alkyd Resin Solution* Raw Linseed Oil
[ Thinners and Driers**
Per Cera
10.0 40.0 30.0 20.0
46.1 32.3 21.6
Pounds
96.7 388.5 289.3 194.3
263.3 184.6 123.6
Gallons
3.22 5.25 7.79 8.16
33.33 23.88 18.37
1540.3
100.00
Weight per gallon
15.4 lbs.
Per Cent Volatile in the vehicle by weight == 35.5
Federal Specification TT-R-266, Type I, Class A.
**Driers: 0.6% Lead, 0.06% Cobalt, based on ve solid*.
Primer for Light Metal Alloys
Dry to handle -- 10 minutes. Re-coat (with lacquers) 1% hrs.
Formula M3309
34 2%
"Pigment E" Titanox RA Black Iron Oxide Magnesium Silicate Aluminum Stearate
65.8% Vehicle
Modified Phenolic Resin Solution*
Modified Alkyd Resin Solution**
Stabilizer Aromatic Petroleum Thinner Butyl Alcohol Driers
Per Cent
73.9 11.5
2.8 10.8
1.0
13.1
62.2 0.2
22.4 1.3 0.8
Pounds 267.0 41.6 10.3 39.0 3.6
91.5
432.3 1.7
155.5 9.3 5.3
Gallons 8.77 1.19 0.26 1.63 0.42
11.10
52.67 0.22
21.76 1.40 0.58
1057.1
100.00
Weight per gallon
10.6 lbs.
PV = 31.0
Per Lent Volatile in the vehicle by weight == 62.1
*Bakelite Dispersion Resin Solution such as BK3962 or XK16700.
**Alkyd Resin Solution 50% solids. The solids analys
ing 35% phthalic anhydride and meeting other requirements of Army-Navy Aeronautical Specifi cation AN-TT-P4>56b.
T U STT I1 H
Automotive Primer-Surfacer (Baking)
BAKING TIME -- 30 minutes at 275F
Formula M5427F
Per Cent
Pounds
Gallons
"Pigment E"
7.0
45.8
1.50
52.1%
Red Iron Oxide (85% Fe203)
66.0
432.6
11.64
Pigment Zinc Oxide
7.0
45.8
0.98
Magnesium Silicate
20.0
130.8
5.49
i 47.9%
Alkyd Resin Solution* Melamine-Formaldehyde
62.4
375.4
48.13
Vehicle
Resin Solution**
11.4
68.4
8.34
Xylol
2.6 15.7 2.18
Mineral Spirits
23.6
142.4
21.74
1256.9
100.00
Weight per gallon
12.6 lbs.
PV = 46.0
Per Cent Volatile in the vehicle by weight = 63.2
*Linseed Oil Modified Alkyd. 30% Phthalic Ashy. "Alkyd Modified Melamine Formaldehyde Resin,
dride. Viscosity in mineral spirits (50% solids)--
50% solids. Viscosity O to T, Acid No. 14.
W to Y, Acid No. 3-7.
I
Primer with Water and Chemical Resistance
Dry to handle -- 4 hrs. Re-coat -- 6 hrs.
Formula M5725
43.6% Figment
"Pigment E" Titanox RA , Black Iron Oxide* Magnesium Silicate Zinc Oxide
56.4% Vehicle
Alkyd Resin Solution**
20 cps Chlorinated Rubber Hi-Flash Naphtha [ Driers***
Per Cent
39.3 6.0 1.9
26.4 26.4
48.0 7.0
43.6 1.4
Pounds
200 30.8 9.6
134 134
315 46
286 9.5
Gallons
6.58 0.88 0.24 5.63 2.87
39.87 3.40
39.45 1.08
1164.9
100.00
Weight per gallon
11.6 lbs.
PV = 36.1
Per Cent Volatile in the vehicle by weight = 59.5
This quantity of black iron oxide produces a dark gray-green color. By reducing the oxide, lighter
olive green to yellow greens can be produced.
"Conforming to Federal Specification TT-R-266, Type I, Class A.
...Drier8: o.8% Lead, 0.09% Cobalt, based on alkyd
resin solids.
Economical Primer for Industrial Equipment
Dry to handle and Re-coat -- 18 hrs.
Formula M6421
44.8% Pigment
"Pigment E" Zinc Oxide Magnesium Silicate Iron Oxide (85% Fe203)
55.2% Vehicle
Alkyd Resin Solution* Petroleum Spirits
and Driers**
Per Cent 8.1
10.9 19.4 61.6
67.3
32.7
Pounds 41.0 55.6 98.9
313.4
421.6
204.5
Gallons 1.37 1.18 4.15 8.44
54.05
30.81
1135.0
100.00
Weight per gallon
11.3 lbs.
= 35.0
Per Cent Volatile in the vehicle by weight = 59.6
Soybean oil glyceryl phtbalate alkyd resin, 30% "Driers: 0.5% Lead; 0.05% Cobalt; 0.03% Manga-
phthalic anhydride; 60% solids in petroleum spirits.
nese, based on vehicle solids.
N LI 115412
Marine Atmospheric Primer
Dry to handle and Re-coat --6 hrs.
j Formula M6419
Per Cent
Pound*
3
"Pigment E"^
. ' 34.8
190J-.
Zinc Omde
~ * ~~ 13.6
74.3
47.9% Pigmeo|
Titanox RA Magnesium Silicate
11.3 38.7
- 62.0211.4
Tinting Pigments
1.<T' -
5.3
Litharge
~--
- " 0.6
3.5-
52.1% Vehicle
Alkyd Resin Solution* Petroleum Spirits
and Driers**
58.9- ~~~ 41.1
350.1 244.3
36.90
1141.1
100.00
Weight per gallon
11.4 lbs.
PV = 40.0
Per Cent Volatile in the vehicle by weight = 58.8
Federal Specification TT-R-266, Type II, Class A.
. Driers: 0.50% Lead, 0.05% Cobalt, 0.05% Manga-
nese, based on vehicle solids.
This is a modified formula based on U. S. Maritime
Commission Specification 52-MC-29 in which the corrosion inhibitive pigment has been replaced by a rednced amount of PIGMENT E.
.
"Pigment E" -- Aluminum Paint
Formula M6631
Per Cent
Pounds
"Pigment E"
10.1 1.0
Varnish*
74.7
7.4
Aluminum Paste**
15.2 1.5
% 9.9
Weight per gallon''
8.6 lbs.
Gallons 0.03 1.00 0.12
1.15
Conforms to Federal Specification TT-V-81a, Type II, Class B.
`Conforms to Federal Specification TT-A-468, Type II, Class A.
Paints based on the above formulation may be used as undercoats in multiple aluminum coatings systems
or as a combination primer-finish coat in single coat applications. In the latter application, where leafing is important, 0.5-1.0 lbs. PIGMENT E per gallon is suggested. In applications where maximum corrosion inhibition is desired, larger concentrations of PIGMENT E niay be used.
\
48.0% Pigment
52.0% Vehicle
Architectural Gray Primer
Dry to handle and Re-coat -- J8 hra.
Per CmA.
Pounds
"Pigment E"
8.9 \
49.6
Titanox RA
43.2 v
240.1
Zinc Oxide
- 5.7
31.7
Magnesium Silicate
1
42.0
\ 233.5
Lampblack
/v 0.2
1.0
Alkyd Resin Solution*
. ^68.2.
v 410.0
Petroleum Spirits
and Driers* *
' 31.8
191.4
Gallons 1.65 6.86 0.66 9.81 0.07
51.92
29.03
V
1157.3
100.00
11.6 lbs. * ^ PV
i
Weight per gallon
= 36.6
Per Cent Volatile in the vehicle by weight = 52,a
1 Federal Specification TT-R-266, Type 1^ Class A.
In order to obtain a satisfactory brushing paint,
Driers: 0.1% Calcium, 0.05% Cobalt, 0.05% Manga- som change in petroleum spirits may be necessary
nese based on vehicle solids.
,
duo to the type of magnesium silicate used.
{Important Notice: The suggestions for use of our products are based upon tests believed
to be reliable, however, we do not guarantee the results since the many variables encount
ered in its use are beyond our control.)
' '
NATIONAL LEAD COMPANY
General 0//fcfa*v 111 Broadway, New Yorfc 6* N. Y.
400 Bishop St., N.W., Atlanta; National Lead Co. of Mass., 800
Albany St., Boston 6; 116 Oak St, Boffals l; 900 Vest 18th St, .
Chicago 8; 659 Freeman Ave, Cincinnati 3; 1770 Cofamhka Rdi 1 * t Cleveland 13; 959 Terminal St., Dallas 2; 2607 East Cumberland SL^ '
Philadelphia 25; 1376 River Ave, Pittsburgh 12; 722 CMestaut jSfc,
St. Louis 1; 2240-24th St, San Francisco 10; 3113 B. 26tih St* La*'
Angeles, 23; 1128 W. Spokane St, Seattle 4."- ^ ..
-
NLI 115413