Document M4O252KZZkRyzGnzkY2mbaOZk
SUBJECT REFERENCE
TO
PLASTICIZER TESTING IN RESYN 1025 AND PD-316
W. T. Vreeland B3NC
R. U. DeSchutter - B3NA M. W. Farrar - R2E J. H. Gannon - B3ND P. W. May J. H. Orem N. W. Touchett^'* W. T. Vreeland - B3NC J. S. Williams - 1940
PURPOSE:
Based upon input from Larry Sides of R. J. Reynolds Tobacco Co. that a Santicizer 160/Santicizer 141 blend exhibits excessive viscosity drift, several plasticizers and plasticizer blends were evaluated with the objective of developing a viscosity stable product.
CONCLUSIONS:
.
1. The experimental plasticizer, XA-1013, developed very stable vis cosities in Resyn 1025, which is the emulsion used by RJR.
2. Laboratory evaluations indicate that Santicizers 218A and 885 are no more viscosity stable than the Santicizer 160/Santicizer 141 blend.
DETAILS:
"
In order to depict low shear mixing used in most adhesive plants, the . 5 shear utilized to mix lab samples in this study was reduced by 50%. The
result of reducing the shear employed in this work revealed the viscosity drift Larry Sides states he sees in his plant trials when Santicizer 160 and blends of Santicizer 160/Santicizer 141 are evaluated.
Following are formulations initially evaluated in this work to determine the effectiveness of Santicizers 218A and 885. Formulas 3 and 4 are partial Santicizer 218A's, while formula 5 is Santicizer 218A, and form ula 9 is Santicizer 885. These products were evaluated on a stepwise basis to determine the comparative effect of individual components on viscosity stability.
12 3456 7 89
Resyn 25-1025 Santicizer 160 Santicizer 141 DIBP DBP Benzoflex 9-88 Colloid 770
89.9-------------------------------------------------------------------------------------- ->
- 10 8.5
9 7.5
9-
-` -
- -1.5 - 1.5 - 10 - -
-
--
1 1.0 -
-10
-
- --
--
1-
- 10
10 - -
--
--
--
0.1---------------- --------------------------------------------------------------------- ->
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DSW 587095
STLCOPCB4092430
2.
VISCOSITY STABILITY*
FORMULA 30 min.
1 4930 2 3100 3 3070 4 3950 5 3050 6 3550 7 2300 8 3650 9 4750
1 Hour 2 Hours
5030 3750 3650 4500 3700 4250 2550 4300 5400
5100 4200 4100 4760 4400 4600 3100 4670 5550
3 Hours
5020 4300 4300 4900 4750 4850 3400 4900 5700
4 Hours
5000 4300 4460 4870 4900 4850 3780 5030 5700
1 Day
5030 4500 4650 4920 5150 5000 5000 5250 5670
1 Week 2 Weeks
4850 4350 4630 4860 5100 4800 5570 5600 5750
4980 4300 4620 4850 5030 4750 5550 5880 5720
* Viscosity testing was performed via a Brookfield LVF viscometer, #3 spindle, 12 rpm spindle speed at 24C ambient temperature.
The viscosity data reveal significant viscosity drift developed through one day in all formulas with the exception of number one, which contained Benzoflex 9-88. Santicizers 218A (formula 5) and 885 (formula 6) exhibit no improvement in viscosity drift compared to 100% Santicizer 160.
Since the above results confirm Larry Sides' findings in the plant, and it appears obvi
ous that based on the blending approach Monsanto has no product to offer Larry, it was
decided to take a different tack.
.. '
The new approach consists of an evaluation of XA-1013 'in Resyn 1025 to determine its viscosity stability in that resin under low shear mixing conditions. XA-1013 plasti cizer was also evaluated in H. B. Fuller's PD-316 resin because the same viscosity drift problem when Santicizer 160 is evaluated is seen by Bill Roberts of H. B. Fuller, Greensboro. The formulations evaluated and data developed from the evaluation follow.
FORMULATIONS
Ingredients
12 345 6
Resin 25-1025 PD--316 Santicizer 160 Benzoflex 9-88 XA--1013 Colloid 770
89.9--------------------------------> - --
10 - - 10 - - - 10 0.1-
89.9------10
-
------>
--
10 .
-
- 10 ------ >
VISCOSITY STABILITY
30 Min.
1 Hour 2 Hours 3 Hours 4 Hours 1 Day 1 Week 2.Weeks
1. 3270 cps 2. 5060 cps 3. 4600 cps 4. 3050 cps ! 5. 3450 cps 1 6. 4070 cps
;
3900 5260 4670 3160 3450 4100
4500 5420 4670 3260 3440 4150
4700 5460 4660 3320 3460 4200
4800 5460 4700 3350 3480 4200
5100 5580 4800 3580 3640 4530
4920 5300 4620 3640 3600 - 4600
4850 5250 4480 3700 3700 4680
r-
- DSW 587096
STLCOPCB4092431
3.
The viscosity data reveal formulation 1, containing Santicizer 160, does exhibit significant viscosity drift, while formulas 2 and 3, containing XA-1013 plasticizer and Benzoflex 9-88 develop stable viscosities throughout two weeks of shelf-life. Stability testing of the three plasticizers in PD-316 reveal good viscosity stability for Benzoflex 9-88 (formula 5) and poor stability for Santicizer 160 and XA-1013 (formulas A and 6).
RECOMMENDATIONS;
R. J. Reynolds Tobacco Co.
1. Since the viscosity behavior of Santicizer 160 appears to be predictable in Resyn 1025, Larry Sides should be asked to consider adjusting the adhe sive viscosity as he normally does, but add more water than the initial viscosity (0.5 hr.) would indicate knowing the viscosity will drift upward in the following 2A hours to the desired level.
2. If Larry dislikes recommendation 1, then recommend use of XA-1013, which develops viscosity stability equal to Benzoflex 9-88.
H. B. Fuller, Greensboro
1. Since Santicizer 160 and XA-1013 develop excessive upward viscosity drift, it would be necessary to recommend to Bill Roberts to use Santicizer 160 by adding more water to adjust viscosity, than initial viscosity would re quire knowing the viscosity would drift to the desired level and not ex ceed it.
It is thought that these recommendations are legitimate ones, which should be proposed and strongly pushed at'both H. B. Fuller and R. J. Reynolds Tobbaco Co.
CNK/gls
C. N. Keeney
OSW 587097 STLCOPCB4092432
