Document 2q9R77EqQ7EdGO8ZVEQYwpRYg
F, H. BEADLES (23) DIRECTOR OF PRODUCTION WILMINGTON F&F
C. W. THEOBALD DIRECTOR RESEARCH DIVISION WILMINGTON F&F
K. F. BROWNING (2) CONSUMER PRODUCTS SALES MARKETING & PRODUCTS MGR. WILMINGTON F&F
C.C; J,, Wo Nestor, Wilm. F&F
Go To Vaala, " "
P. I, Poindexter " "
L. So Baker,
"
R. B. Davis, "
"
D. L. Herndon, '*
"
J. O. Graves, "
"
Go I. Mulholland, Flint
0. Ho Bullitt, Jr., Lab.
Po J. Graham, Exp, Sta.
File: 3320
Marshall Laboratory April 25, 1967
MARSHALL DEVELOPMENT LABORATORY SUPPLEMENTARY RELEASE LETTER #1997-C REPLACEMENT OF SULFATE Ti02 WITH CHLORIDE Ti02 IN 603-LINE ALKYD HOUSE PAINTS
No Approval Action Required
The attached covers the conversion of 603-Line Alkyd House Paints to the use of chloride process TiO^j W-185, "Ti-Pure*1' R-902 Hi Gloss. At the same time H-454, 10% solution of phenyl mercury oleate is replaced by G-796, 100% phenyl mercury propionate, at equal mercury content in another simplification towards obsoletion of H-454.
MARSHALL DEVELOPMENT LABORATORY
E. OYLER
JE0:hfm Attach. Registered Du Pont Trademark
APPROVED APPROVED
DATE_ DATE
MARSHALL DEVELOPMENT LABORATORY SUPPLEMENTARY RELEASE LETTER #1997 B REPLACEMENT OF SULFATE Ti02 WITH CHLORIDE Ti02
Product or Line Number 603-Line Alkyd House Paints Related Release Letter No. 1997-A
No Approval
Sulfate
Chloride
Replaced Replacement
Replacement Change in Procedure Mill Cost
Stability Data Available
W-28
W-123
Equal Wt. X* None *
Months 12&18
W-43
W-129
Equal Vol.
Increase c/gal.Adequate X
W-50 X
W-131
Equal
Decrease*5. 5q/gal.Inadequate
Hiding X*
Tints Only
W-124
W-185 X
New Standards Issued.
Yes
______No X
Estimated Annual Consumption Change. Chloride Increase 283,000
Based on 1966 Production
Sulfate Decrease
297,200
Active Formulating Practice Revised. Date
Formulating Practice to be Written. Yes
No
Initial -Chloride Ti02 Formula Date.
*Nos. 40 and 42 Whites use W-185 at equal weight to increase hiding about 5-8%. Tints use W-185 to equal tinting strength, abou,t 5% reduction, to effect slight cost savings.
ifgpp
N42507.01
DUP030022278
Properties Thoroughly Evaluated
Shelf stability Chalk resistance Tint retention Appearance retention Cleanliness retention Whiteness (whites)
R. L. #1997-C
Compared to Std. "^ Variation*
X X
X X X X
^Better cleanliness and less yellowing result in improved appearance and an apparent if not actual improved tinting retention. Whites are less yellow initially and during
exposure.
Compared to Std.
Properties - High Spot Evaluation Equal
Variation
Production limited to laboratory batches of whites and several tints. Pre-alignment considered to be unnecessary.
List Critical Tests required for alignment beyond control testing None
DUP030022279