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Monsanto
Chemicals-Plastics
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AROCLOR li
3or Polyvinyl cAcetale Cmuljion cAdlieiivei
Monsanto Technical Bulletin No. 0-111
Novombor, 1955
Monsanto Chemical Company, Organic Chemicals Division, St. Louis 1,Mo.
INTRODUCTION
Monsanto Aroclor* chlorinated polyphenyls are a series of compounds serving a variety of needs. Each Aroclor can serve as a plasticizer for many of the synthetic resins. Properties imparted vary with the Aroclor chosen. In this respect the family of Aroclor compounds is analogous to a series of phthalate esters.
Aroclor 1221, 1232 and 1242 are three compounds especially suited for plasticizing polyvinyl acetate (PVA) emulsion adhesives.
These are important advantages of the Aroclor plasticizers specified --
1) Excellent tack and strong bonding power are imparted to PVA adhesives.
2) The compounds are low in cost.
3) The plasticizers are light colored.
4) Aroclor 1221, 1232 and 1242 are mobile liquids at room temperature. Plant handling is simplified since no pre-melting is required.
5) The plasticizers are readily blended with PVA emulsions by simple stirring.
6) The hardness desired in various adhesive applications can be varied by choice of Aroclor plasticizer without materially changing other properties of the adhesive.
7) The three Aroclor plasticizers recommended for PVA emulsion adhesives are comparable to or/Ao-Nitrobiphenyl (a widely used PVA plasticizer), with regard to tack and fiber-tear, as indicated by tests on a porous yellow paper and a melamine-coated Kraft stock.
8) Aroclor compounds are readily available. '
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Ti ,u t.ml'KtH by Monsanto show Aroilor~AiUi.Mil and 1242 are each compatible^with, PVA .at;the-evalua* r/r ^ \ \ i*kt\ of plasticiser in 100 parts of polyvinyl acetate emulsion, TEach of the Aroclor plasticizers *.J t^rnd with or/Ao-Nitrobiphenyl, if blending is desirable. Add liquified OXFto the emulsion, then add the
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LABORATORY DATA
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v%u) PVA adhesive formulations using different plasticizers were made up and evaluated in our laboratories. IV la'ie fornhrialton consisted of 11 parts of plasticizer in 100 parts of polyvinyl acetate emulsion. Data tabu-
Utrti Vlow HtU-allow the adhesive formulator to choose the most suitable plasticizer for the a'dhesive proper-
Im doired.
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A COMPARISON OF POLYVINYL ACETATE PLASTICIZERS
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Formulation*'*'"1^' " ' ortho-Nitro- Dibutyl . . Aroelor . , Aroclor.-
Properties ,,
^
biphenyl
Phthalate
1221
1232
Aroclor 1242
Shore Hardness, A-$caleTnt
>.ASr- c. . 69
66
86
57
Low Temp. Flea., 0 C. Piar.: nar.c..::
-- 10.2 . .-S-9 . :r. +.4X)-:.:- - +5.3
Volatility (ft plastitizer'Jostp.a--:.:^; after 24 hrs. at |6 C.) .........
AS* c -
_ 4.8% ^ ....
caa:cc c: Kerosene Extraction, (^plasticizer ^
lost after 24 hrs. at room
temperature)
_____
Viscosity of Formulation*;.. : _
(Centipoises)
Initial .........
1 day
' "t$o
4.5%- - 3'.8%'
' ~ ' * ''
.........
: . , on-. ...
. .. ...
2160
2420
2240
2160
__ 2460 __ __
3 days 4 days 5 days *~ss~r 7-days-- ,J!l 10 days
2200
__
2260
-2340 . '2460
____ 2520 ____ ____
2200 ____ 2200 * 2180 2260
2060 ____ 2040 2020 2060
4.0%
4.2%
__ __ __
____ -- ____ ....
!rux!
of the polyvinyl acetate emulsion tested was 1500 centipoises.
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TYPICAL PROPERTIES AND SPECIFICATIONS
Property
Aroclor 1221
Aroclor 1232
Aroclor 1242
Color, APHA max. (Specification)
..
Acidity, max. (mg. KOH/gm.)
Specific Gravity, 25/15.5 C. (Specification)
Pounds Per Gallon
Distillation Range*, C.
Rath Point, C.O.C., 0 C. F.
Fire Point, C.O.C.. 0 C. F,
Pour Point. ASTM-D-97, C.
Refractive Index, rD*8
Viscosity, S.U.S. 210 F.
(ASTM-D-88)
130 F.
(Specification): 100 F.
*ASTM'D*20 (modified).
100 100
0.014 1.182-1.192
0.014 1.270-1.280
9.85 27S-320
10.55 295-355
141-150 2860-302
1496*152 300-305
176 349
212 415
Crystals at 1 1:615-1.616
-35.5
1.618-1.620 (Specification) >
30-31 35-37 38-41
31-32 39-41 44-51
**No fire point up to boiling temperature.
100
0.015 1.381-1.392
11.50 325-360
'
176-180 348-356
None** ....
-19
1.624-1.626 (Specification)
34-35 49-56 82-92
TOXICITY AND SAFE HANDLING INFORMATION
The acute ora) toxicity of Arcelor 1242 shows it to have an LDM to rats of 4.15 ml./kilogr&m. Presumably the other two Aroclor compounds are in the same toxicity range. Repeated or prolonged skin contact with these compounds is to be avoided. Inasmuch as their processing in this use does not require the use of elevated temperatures, there should be no hazard from vapor exposure.
SHIPPING INFORMATION
Shipping Classification (U.SA) Shipping Regulations Standard Containers
-- Synthetic Resin
-- None
-- 55 gal. black iron, nonretumable, lacquer-lined drums containing 500 lbs., net, (Aroclor 1221 and 1232) or 600 lbs., net, (Aroclor 1242).
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MONSANTO CHEMICAL COMPANY
ST. LOUIS
AKRON ATLANTA' BOSTON CHICAGO CINCINNATI
CLEVELAND DETROIT HOUSTON LOS ANGELES MINNEAPOLIS
NEW YORK SAN FRANCISCO SEATTLE WILMINGTON
MONSANTO CHEMICALS LTD. ' London
MONSANTO CHEMICALS (AUSTRALIA) LTD. Melbourne
_ MONSANTO (CANADA) LTD. Montreal Toronto Vancouver `
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Representative! in the Principal Cities of the World
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