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MMm 1221,1232,1242
for polyvinyl acetate-emulsion adhesives
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TECHNICAL BULLETIN No. PL - 32 I
REVISED
o APRIL, 1963
o SI. LOUIS BE. MISSOURI
>o93il
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TOWOLDMON0034616
WATER_PCB-00019085
INTRODUCTION j
>*
Monsanto Aroclor* chlorinated pdlyphenyls 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 orf/ro-Nitrobiphenyl, which has been displaced by these Aroclor plasticizers in PVA emulsions, with regard to tack and fiber-tear, as indicated by tests on a porous yellow paper and a mela mine-coated Kraft stock.
8) Aroclor compounds are readily available.
Aroclcr: Monianto Chemical Company Trademark. Regutered in U. S. Patent Office.
05 <>93,
TOWOLDMON0034617 WATER_PCB-00019086
Tests conducted by Monsanto show Arodor 1221, 1232 and 1242 are each compatible with PVA at the evaluation level of 11 parts of plasticizer in 100 parts of polyvinyl acetate emul sion.
LABORATORY DATA~]
Several PVA adhesive formulations using different plasticizers were made up and evaluated in *>r- our laboratories. The basic formulation consisted of 11 parts of plasticizer in 100 parts of ' polyvinyl acetate emulsion. Data tabulated below will allow the adhesive formulator to choose
the most suitable plasticizer for the adhesive properties desired.
COMPARISON OF POLYVINYL ACETATE PLASTICIZERS (100 parts polyvinyl acetate emulsion; 11 parts plasticiser)
.* ..t
Formulation _ _ pr0pdrfjM
ortho'Nitro- Dibutyl Arodor Aroclor Aroclor
bipheny! Phthalata 1221
1232
1242
r-
V
Short Hardness, A-scale.,. . , .. .
69 66 86 97
.Low Tamp. Ret, C..
- i ----- +Z.Z
-10.2
--5.9
-f-4.0
4-S.3
Volatility (% plasticizer lost - after 24 hrs. at 86 C)
17 : . *>
4.0 4.8 4J 4.0
Kerosene Extraction, (% plasticizer
lost after 24 hrs. at room
~ temperature)
-t
$2
4.1 4.5 3.8 4.2
Viscosity of Formulation*
(Centipoises)
Initial
1 day
3 days
4 days
5 days
7 days
10 days
2160
2200
2280 2340 2460
2420 2460
2520
2240
2200
2200 2180 2260
2160
2060
2040 2020 2060
Initial viscosity of the polyvinyl acetate enulaion tested vai 1500 centipoiae*.
c 2
0509323
TOWOLDMON0034618 WATER_PCB-00019087
TYPICAL PROPERTIES AND SPECIFICATIONS 1
Property
Appearanco
Refractive Index @ 20 C
Chlorine, %
Density, lbs. per gal., @25C
Rolling Point, 760 mm Hq
Poor Point (ASTM D-97)
Flash Point (C.O.C.)
Rre Point (C.O.C.)
Viscosity, S.U.S., @ 37.8 C 54.4 C 98.9 C
Distillation Range ASTM-D-20 (modified)
Aroclor 1221
. Mobile, Colorless, clear liquid
1.617 - 1.618 21.0=t0.5
9.85
275-320 C
Crystals at 1 C. 286-302 F. 141-150 C.
' ............349 F. 176 C.
38-41 35-37 30-31
275-320 C
Aroclor 1232
Practically colorless,' mobile oil
1.620-1.622 32.0:0.5
10.55
290-325 C
--35.5 C 305-310 F. 149-152 C.
460 F. 238 C.
44-51 39-41 31-32
295-355 C
Aroclor 1242
Practically colorless, mobile oil
1.627-1.629 --
11.50
32S-366 C
.-19 C 348-356 F. 176-180 C.
None, to boiling point
80-93 49-56 34-35
325-360 C
MONSANTO SPECIFICATIONS
Property
Color, APHA max. Specific Gravity
A 25/15S C Acidity, mg. KOH/gm. max. Viscosity @ 100 F.,
S.US. (37.8 C)
Aroclor 1221 100
1.182-1.192 0.014
38-41
3
Aroelor 1232
100
Aroelor 1242
100
1.270-1.280 0.014
1.381-1.392 . 0.015
44-51
80-93
0509321*
TOWOLDMON0034619 WATER_PCB-00019088
ODOR MASKING FOR SPECML APPLICATIONS"^!
When necessary, the slight odor imparted to PVA adhesives by these Aroclor plasticisers can be completely and economically masked. One drum of adhesive is effectively masked by the addition of only 6 grams of either Odormasque* 1004 (camphor odor) or Odormasque 1066 (fniity odor). Thus one pound of Odormasque is enough to treat 75 drums of adhesive. Even after 40 hours' aging at 150 F, the maskant odor was retained by dried adhesive films con taining 0.005 per cent Odormasque (based on resin).
*Odarm9ur: Registered Trademark of Polak 6? Schwarz. Inc., New York, N. Y.
TOXICITY AND SAFE HANDLING J r
The oral LD,0 of Aroclors 1221, 1252, and 1242 in rats is approximately 4.0 grams, 4.5 grams, and 8.5 grams per kilogram respectively. This indicates that the compounds are not particularly toxic following single ora] ingestion.
When the Aroclor compound is applied undiluted to the skin of rabbits the minimum lithal dose is 2 to 3.1 grams per kilogram for "1221", 1.25 to 2.0 grams per kilogram for "1232", and 0.8 to 1.25 grams per kilogram for "1242". In this range of skin absorption doses, the com pounds can be classified as "slightly toxic", "mildly toxic", and "moderately toxic" respectively. It Is recommended that repeated or prolonged skin contact be avoided.
In animal inhalation studies, Aroclor vapors do not present a hazard if the compounds are used at ambient air temperatures. When used at elevated temperatures, the inhalation of va pors should be avoided.
shipping']
Shipping Classification Shipping Regulations
-- Chlorinated Diphenyl/Synthetic resin, Liquid N.O.l.B.N.
-- None
Standard .Containers
--Aroclor 1221 Tank car, 520 lb. steel drum Aroclor 1232 Tank car, 550 lb. steel drum Aroclor 1242 Tank car, 600 lb. steel drum
The information contained in this bulletin is, to our bast knowledge. true end eceurete, but all re commendations or suggestions era made without guarantee, since the conditions of use are beyond cur control. Monsento Chemical Company disclaims any liability incurred in connection with the use use of theie data or suggestions.
Furthermore, nothing contained herein ihell be construed e> e recommendation to use eny product tn conflict with existing patents covering eny materiel or its use.
ach-jmo sj
4
0509325
TOWOLDMON0034620 WATER_PCB-00019089
ST. IC11S EE. MISSOURI
ATLANTA OSTON
CHICAGO CINCINNATI CLEVELAND DETROIT HOUSTON LOS ANGELES MINNEAPOLIS
. f
NEW YORK
PITTSBURGH
ST. LOUIS
SANTA CURA
SEATTLE
SYRACUSE
WILMINGTON
MONSANTO CHEMICALS LTD. London
MONSANTO CHEMICALS (AUSTRALIA) LTD. Malboomo
MONSANTO (CANADA) LTD.
Mentrool
Toronto
Vancouver
0*,0<32b
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TOWOLDMON0034621 WATER_PCB-00019090