Document zzXnO4m8z9qkJRV0r73jYKej3

i.i" i B7t APiOCLC!fl221,1232,1242 for polyvinyl acetate-emulsion adhesives TECHNICAL BULLETIN No. PL-321 REVISED O APRIL, 1963 I Monsanto LM o ST. 10UIS 66. MISSOURI 0io93il TOWOLDMONOQ58882 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 orMo-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. Aroclor: Monsanto Chemical Company Trademark. Registered in U. S. Patent Office. I 50 TOWOLDMONOQ58883 Tests conducted by Monsanto show Aroclor 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 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 plasticizer) Formulation _ . ortho-Nitro- Dibutyi Aroclor Aroclor Aroclor - - prOp0rfiet - biphenyl Phthalate 1221 1232 1242 Shore.Hardness, A-scale.... . , .. ..' . 82 69 66 86 97 ;Low Temp. Rex., C. - --- - - r_ -- +2.2 -10.2 -5.9 +4.0 +5J Volatility (% plasticizer lost - after J4-hr*, at 86 C)-- ------ 4.0 4.8 4.3 4.0 Kerosene Extraction, (% plasticizer lost after 24 hrs. at room ' temperature) 3.2 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 *Ioitial vi*co*ity of Che polyvinyl acetate tmuliion tested was 1500 centipoisei. 2 0509323 TOWOLDMON0058884 0; TYPICAL PROPERTIES AND SPECIFICATIONS ^ Property Aroclor 1221 Aroclor 1232 Aroclor 1242 Appearance . Mobile, Colorless, clear liquid Practically colorless,' mobile oil Practically colorless, mobile oil Refractive Index @ 20 C 1.617 - 1.618 1.620-1.622 1.627-1.629 Chlorine, % 21.00.5 32.00.5 -- Density, lbs. per gal., @ 25 C 9.85 10.55 11.50 Boiling Point, 760 mm Hq 275-320 C 290-325 C 325-366 C Pour Point (ASTM D-97) Crystals at 1 C. --35.5 C .-19 C Rath Point (C.O.C.) 286-S02 F. 141-150 C. 305-310 F. 149-152 C. 348-356 F. 176-180C. Rre Point (C.O.C.) # ' ............ 349 F. 176 C. 460 F. 238 C. None, to boiling point Viscosity, S.U.S., @ 37.8 C 54.4 C 98.9 C 38-41 35-37 30-31 44-51 39-41 31-32 80-93 49-56 34-35 Distillation Range ASTM-D-20 (modified) 275-320 C 295-355 C 325-360 C MONSANTO SPECIFICATIONS Property Color, APHA max. Specific Gravity A 25/155 C Acidity, mg. KOH/gm. max. Viscosity (a) 100 F., S.U.S. (37.8 C) 0 Aroclor 1221 too 1.182-1.192 0.014 38-41 3 Aroclor 1232 100 Aroclor 1242 100 1.270-1.280 0.014 1.381-1.392 . 0.015 44-51 80-93 0&09321* TOWOLDMONOQ58885 ODOR_MA$KING FOR SPECIAL^APPLICATIONS^] When necessary, the slight odor imparted to PVA adhesives by these Aroclor plasticizers 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 (fruity 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). ^ Odomuuguc: Registered Trademark of Polak ft Schwarz, Inc., New York, N. Y. TOXICITY AND SAFE HANDLING J The oral LDS0 of Aroclors 1221, 1232, 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 oral 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 tone", "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.I.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 bullatin it, to our bast knowledge. true and accurate, but all re commendations or suggestions are made without guarantaa, since the conditions of use ere beyond cur control. Monsanto Chemical Company disclaims any liability incurred in connection with the use use of these data or suggestions. Furthermore, nothing contained herein shall be construed as e recommendation to use any product in conflict with existing patents covering any materiel or its use. t-W-J (3 4 0509325 ST. tGUIS ES. MISSOURI ATLANTA BOSTON CHICAGO CINCINNATI CLEVELAND DETROIT HOUSTON LOS ANGELES MINNEAPOLIS | NEW YORK PITTSBURGH ST. LOUIS SANTA CLARA SEATTLE SYRACUSE WILMINGTON MONSANTO CHEMICALS LTD. London MONSANTO CHEMICALS (AUSTRALIA) LTD. Melbourne MONSANTO (CANADA) LTD. Montreal e Toronto e Vancouver 0^0<32b o TOWOLDMONOQ58887