Document b5D9JX3BbonrOgD1J5ewwGJmg
CC:
J. O. GRAVES (23) DIRECTOR OF PRODUCTION F. & F., WILMINGTON
C. W. THEOBALD DIRECTOR OF RESEARCH DIVISION F. & F., WILMINGTON
J. T. GEOGHEGAN (4) INDUSTRIAL SALES MANAGER F. & F., WILMINGTON
W. D, Lawson, F&F, Wilm.
G. T. Vaala, " "
F.- D. Chapman, "
"
J. C . Richards, 11
11
j. A. Klacsmann,"
"
P. 1. Poindexter, "
11
O. H. Bullitt,Jr., Lab.
P. J. Graham, Exp. Sta.
G. 1. Mulholland, Flint $
G. R. Maher, F&F, Wilm.
A. B. Naselow, "
'WAc -
ih
File: 3320
lVi
Marshall Laboratory March 28, 1969
MARSHALL DEVELOPMENT LABORATORY RELEASE LETTER NO. 2152 752 LINE DU LUX ENAMEL (KITCHEN CABINETS , ACCENT
_FURNITURE, AND JUVENILE FURNITURE)
PROJECT:: 511093
PROPOSAL AND EXTENT OF RELEASE:
This letter proposes the sale of 752 Line "Dulux" Enamels to the wood furniture industry. This line is primarily intended for use on kitchen cabinets, although it can be used wherever pigmented topcoats are required for furniture.
Eleven colors have already been developed and are being offered to Mutschler Brothers. Another product has been used at Bassett since late 1966. Nine colors have been or are being developed for Eisen Brothers.
MANAGEMENT DECISION REQUESTED:
Management is requested to decide whether 752 Line "Dulux" Enamels of the type described here should be released to the industry. The following should be considered:
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1) Volume will be relatively small for the near future - from 50 to 350 gals, annually per Item.
2) The 151 Line Air Dry Enamels at
Brothers
hpvealready been obsoleted and replaced by this line.
3) Not all stability and durability data are complete, although no problems are expected.
4) Some manufacturing problems have arisen, mainly having to do with gloss control. The problems now seem to be resolved.
5) Every composition developed for juvenile furniture so far (e.g. Eisen's 752-6737?) contains some lead, but the lead does not exceed the 0.05% Pb on solids limit specified in the Industrial Sales Standard Practice HH/4 - 4.1 (1/17/69 revision).
TECHNICAL OPINION:
The Marshall Development Laboratory favors approval of this release. We are aware of the limited gloss and color stability of the (catalyzed material (1 day), but no field problems have been encountered because of this. Limited data on stability and cold crack and humidity crack resistance indicate satisfactory performance, and we are in the process of more comprehensive tests.
Some manufacturing problems having to do with gloss control have arisen with several batches but formula revisions of the paints and the flatting base (VM-39.9) seem to have improved control.
Our customers are generally satisfied with application and performance of this line.
We| are now writing a Formulating Practice to standardize the composition and development of future colors.
DESCRIPTION OF PRODUCT:
This type of 752 Line "Dulux" Enamel is based on Type "F" Furniture "Dulux11 topcoats and 42 Line. It Is designed to be sprayed over vinyl sealer or primer (e.g. 170-63724) and cured by forced drying. No reduction is needed, but <addi:tiam of 2-4% 4502 Accelerator is/required.
DUP030022961
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The composition of the binder is roughly G-l 161/RC-718/ RC-305/RC"6000 = 0=5/10/5 .4/13.2, and the range of forced drying temperatures used is from 130 - 160F. Some formulas have small amounts of RC-262 introduced from certain 42 Line bases.
Three colors developed for EiSen Brothers With 732 Line mill bases . have a higher UF/alkyd ratio and, as a result, have poorer cold crack resistance properties (refer R. L. ^2044 concerning 752-63951). Further development along these lines has been stopped in favor of the 42 Line mill base route.
Pencil hardness is adequate and varies from 3B to F depending on resin ratio. Kitchen cabinet fume resistance (as per TD-253A)) is superior to that of a pigmented nitrocellulose primer/nitrocellulose clear topcoat system but equivalent to a pigmented nitrocellulose topcoat (e.g. 266 Duco Line). Chemical and abrasion resistance is generally better than those of lacquer systems, but repair compatibility is inferior.
The color range available is that offered by the 42 Line, although hiding may be deficient with some colors such as Eisen's 752-67334 Avocado Green. Due to flatting base limitations, the available gloss range is from 35 - 75/60. COMPETITIVE SITUATION;
We have encountered no competitive pigmented UF/alkyd products. The kitchen cabinets products we have seen in the field are nitrocellulose or CAB lacquers.
Much of the market uses a "natural finish," or a stain, sealer and clear topcoat (nitrocellulose) system for kitchen cabinets.
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TABULATION OF COMPOSITION: One representative formula is described below:
752-67292 Synthetic Enamel - Antique White 2/26/69 Formula
RC-718 G-1161 RC-6000 42-185 42-630 42-224 42-785
Urea-formaldehyde resin Cymel 300 Styrenafed DCO alkyd White mill base Ferrite yellow mill base Black mill base Green mill base
15.95% 0,41
29.24 28.98
0.24 Trace Trace
0) d) (1)
VM-399
H-583 H-12
VG-332 VH-5379 VH-965
Flatting base
Xylene n-butanol
Nylon solution (5%) Silicone solution (2%) Hydroquinone inhibitor (7.8%)
16.68
6.17 1,41
0.34 0.40 0.18 100.00%
(2)
(3) (4)
(5) (6) (7)
NOTES:
1. Principal film formers. A large proportion of additional resin, mostly RC-305, is introduced with the 42 Cine.
2. Special flatting base used to control gloss.
3. Primary viscosity control solvent.
4. About 1.5% H-12 is used to keep the RC-718 stable.
5. Anti -si Iking agent.
6. Leveling agent.
7. Anti-ye I lowing agent.
DUP030022963
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REPRODUCE! L1TY; Several dozen laboratory batches involving fifteen colors have
been made satisfactorily. The major problem has been gloss variations as the result of the VM-399 flatting base: the control testing procedure in the base manufactured had not been sufficient to prevent changes in flatting strength From batch to batch. The tests methods have now been improved. CONTINUING LABORATORY WORK:
Stability tests are being run at room temperature and 120F. for one, three and six months. (Refer to N. B, 9175, p, 46).
Seven cycles of humidity crack show no failure s as of 3/11/69. Cold crack tests will be run. If negative results occur, they will be reported in a 'Supplement. All tests results are due 10/1/69.
New colors will be developed by the Task Force as needed. A Formulating Practice is being written to simplify new developments (due 5/1/69). COST INFORMATION;
Official costs may be obtained through regular channels. Bulk mill cost is in the order of $1.94 per gallon, which is equivalent to 6.13$/% volume solids or 0.38$/sq. ft. mil. MANUFACTURING PROBLEMS:
Some difficulty has resulted from gloss control. We have revised formulas for the finished products and flatting base to correct the situation. No new problems have shown up,
m One formula, 752-67350 Hyacinth, was STOPPED when the plant fourjd that a 1000% overdose of 4502 Accelerator caused a dramatic color change. If volume warrants it, this formula will be reformulated to replace the acid-sensitive pigment.
DUP030022964
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TOXICITY OR OTHER HAZARDS:
Toxicity in general is no worse than most solvent based paints.
For the special case of juvenile furniture (e.g. Eisen Brothers baby cribs), a toxic metals concentration limit must be observed. The range of % Pb on solids calculated is from 0.0088 to 0.0145, well within the 0,05 limit specified by the Industrial Sales Standard Practice HH/4 - 4.1.
SIMPLIFICATION:
No unusual effect.
PATENT INFORMATION:
There are no currently known U. S. patents which would interfere with the manufacture and sale of the defined typical 752 Line enamel " formulated with a film-forming composition consisting of a combination of urea/ formaldehyde resin, hexamefhaxymethyl melamine ("Cyme I " 300), styrenated DCO alkyd resin and short oil length soya alkyd resin. Ifi.use of a Du Pont imanufactured melamine/formaldehyde condensate equivalent as a replacement for "Cyme!" 300 is contemplated, a license under American Cyanamid's "Cymel" patents may be required. In consequence of a consent decree, American Cyamid's melamine-patents are made available royalty free in United States.
CONFORMANCE WITH AIR POLLUTION CONTROL DIRECTIVE:
This line is not designed to conform with Rule 66,
CONFIDENTIAL INFORMATION:
There is no unusually confidential information in this letter. This letter is for Du Pont use only.
FORMULA CARDS:
752-67292,
MARSHALL DEVELOPMENT LABORATORY
LWY:hfm APPROVED APPROVED
L. W. YOUNG DATE DATE
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iOi Cm 752! 1 67.2921 (SYNTHETIC ENAMEL - ANTIQUE WHITE
1 ? 1 2t?6feS
202 c w t . MUTSCHLER BROS.___________________I uc INAPPANLE INO._____ Rea. AO. GRNSBORO 7NO.
203 Eta Use WOOD FURNITURE ..
I1*" ITEMP .................. c&ea WijlXfc____________
204 tees J J CANTUELL/FRH
*-* 12-12-68
8909-143________
205 J&VHBR L W YOUNG/CLH
U-ap.jFCP-Q
....... . . Tim .PltllA.................
206
T--1 1--7--68--P
______ ... -_______fckRyj-P_____________________
,Ji.Q'6.zb.?=MS______
so? 208
RF.t REVISE GLOSS LIMITS + MFG.
1T.P. 111 ' ' .
___________
DIRECTIONS U ........ ^*4:752^67:33-1-*-.
. ....................... ............ . L'-g.3t.6-.0.0.34.-B___________
SSSJ I Z% 4502 ACCELERATOR MUST BE AOOEO BY WEIGHT TO BOTH BATCH 310 8 SAMPLE AND STO. AND SHAKEN THOROUGHLY PRIOR TO TESTING // 311 T F GLOSS TM-204-F 60/46-56. TP-338-8 0.0070 BRIO FILM 312 & 0 APPLICATOR DRAWN DOWN ON GLASS. A.D. 45 MINS. THEN BAKE 1 HR 3JLL $ R AT 150 DEG F. // FILM PROPS TM-34Q-A - STO. // COLOR - SPRAY Ml t fit TM--349--X TO COMPLETE HIDING ON STEEL. A.D. 30 MINS. BAKE 315. 1 A 1 HR. AT 150 DEG F. //
KT
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0
ft 420 Vo l So l _____
` |sva-tl621 % ! ~
|w.set.U732% "
"
221.
COMPUTER PROGRAMMED ft
222. 0 PATTERNED AFTER 752-B 88502 EXCEPT FOR GLOSS // COLOR MATCH
222. T I TO 151-9896
m. H N SFMC 514 //
EF
HZ R 0. BINDER SOLIDS RATIO = G-H6I/RC-305/RC-718/RC-6000 *
221-
0.412/4.424/9.908/13.666 //
5JL2.
22a
221
?3.&. ZiS.
1A&. Z&MXL. 122.
ZSfl.
S64d1Z,. St fe&5-
647.
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feSfi.
ZS2.
&J>i ig
JSt c
732lJ-6i2) =)sYMTHETC ENAMEL - ANTIQUE WHITE
&0S-
7C 45-55"
B-KitJCft sTMr~-- % 95
AtT. A
.^WXjg--
ZINC 1 5 ACT I VS u WASH 3EFX BE LOAD It G WITH H-583 //
' " I 2fr&b9
1.25-1.50 IGA
pgl.1.
RC
718
145;31
G U 61
3 74
VR 399 SI 151 -96
FIX 30 MINS
RC 6000
63:68
VH 5379
3 ;64
VH
965 52
1:64
AOOiwITJ MIXER RUNNING //
MIX 4 5 MINS.
;
42
VG
*HAK BATCH UNTIL
185
263 (96
332 $
ADD SLOWLY WITH MIXER RUNNING. 3 llO
- V WITH MIXER RUNNING //
POUR 01 T 01 GLASS PI ATE OF V<- 332 PRIOR TO AOD'JMi TO
// IF ! E E05 HEAi TO I30"f<*0 0EG F. FOR 15 MINS. OR
HCLEAR 1 EN P0UP4D 01 GLA|S.
RC 6000 202:71
H
12 52
12 las
- - **--
Y WITH MIXER RUNNING. LOWliV WITH .MIXER. RUNNING.
630 224 785 399 583
3 WISC. RA [ ;e g l c :
2 iL9 -TRA ;CE-
TRA :CE-
II -TRA iCE-
56 =22
SHADE TO STD. WITH BASES SHOWN // '/ *70 ijOWErf GLOSS AID WM-399 7/ AQD RC-A710IRC-6Q00 qLEND 30/70 It
TOTAL
911 :00
MARK
STIR FOR MU USING
IIPPINI d e t a in e r s < ACCEUERA1 OR MUST BE ADDED.
ILL"
I isCONTI
VH-5379. FLUSfl 01 IPMEWT THOROUGHLY BEFORE
CTOR BAT F ANQTHEf CODE //
N42525.01
DUP030022966