Document q3kkVZO50NdVoVdvYaKkZym1k

sfeirJ *'****-'**'' ' , STLCOPCB4000907 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 imparled 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 ort/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. *Aroclor: Monsanto Chemical Company Trademark. Registered in U. S. Patent Office. I DSW 007456 STLCOPCB4000908 COMPATIBILITY Tests conducted by Monsanto show Aroclor 1221, 1232 and 1242 are each compatible with I'YA at the evaluation level of 11 parts of plasticizer in 100 parts of polyvinyl acetate emul sion. LABORATORY OATA 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 Properties ortho-Nitro- Dibutyl Aroclor Aroclor Aroclor biphenyl Phthalate 1221 1232 1242 Shore Hardness, A-scale 82 69 66 86 97 Low Temp. Hex., 0 C + 2.2 -10.2 -5.9 + 4.0 + 5.3 Volatility (% plasticizer lost after 24 hrs. at 86 C) 3.8 4.0 4.8 4.3 4.0 Kerosene Extraction, (% plasticizer lost after 24 hrs. at room temperature) 3.Z 4.1 4.5 3.8 4.2 Viscosity of Formulation* (Centipoises) Initial 1 day 3 days 4 days S 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 emulsion tested was 1500 centipoises. 2 DSW 007457 STLCOPCB4000909 TYPICAL PROPERTIES AND SPECIFICATIONS ts j O Oo' no Property Aroclor 1221 Aroclor 1232 Color, APHA max. (Specification) Acidify, max. (mg. KOH/gm.) 100 0.014 Specific Gravity, Z5/15.5 C (Specification) Pounds Per Gallon 1.182-1.192 9.85 Distillation Range* 275-320 C Flash Point, C.O.C. 141-150 C 286-302 F Fire Point, C.O.C. 176 C 349 F Pour Point, ASTM-D-97 Crystals at 10 C Refractive Index, n2t D 1.615-1.616 Viscosity, S.U.S. (Specification) 210 F 130 F 100 F 30-31 35-37 38-41 100 0.014 1.270-1.280 10.55 295-3S5C 149-152 C 300-305 F 212 C 415 F -35.5 C 1.618-1.620 (Specification) 31-32 39-41 44-51 ASTM-D-20 (modified). **No fire point up to boiling temperature. Aroclor 1242 100 0.010 1.381-1.392 11.50 176-180 C 348-356 F None** -- 19 C 1.624-1.626 (Specification) 34-35 49-56 82-92 ODOR MASKING 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 lOfifi (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). `Odormasque: Registered Trademark of Polak 6? Schwari, Inc., New York, N. Y. 3 DS 07*58 STLCOPCB4000910 TOXICITY AND SAFE HANDLING The acute oral toxicity of Aroclor 1242 shows it to have an LDS0 to rats of 4.15 ml./kilogram. Presumably the other two Aroclor compounds are in the same toxicity range. Repeated or pro longed 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 Shipping Classification (U.S.A.) --Synthetic Resin Shipping Regulations -- None Standard Containers -- 55-gal. steel, nonretumable lacquer-lined drums containing 500 lbs. net (Aroclor 1221 and or 600 lbs. net (Aroclor 1242). 1232) The information contained in this bulletin is. to our best knowledge, true and accurate, but all re commendations or suggestions ore mode without gvaranleo, since the conditions of use are beyond our control. Monsanto Chemical Company disclaims any liability incurred in connection with the use use of thesfe data or suggestions. Furthermore, nothing contained herein shall be construed as a recommendation to use any product in conflict with enisling patents cohering any material or its use. 4 0$h 0?tS9 STLCOPCB4000911  , / ', : V.\j, '-'V.h. /. ,,'l : . V : yy 4. sy.y .y .vy'vy .* -.*. - :i _ '. ,f y i''.,-;' y y!'.. ' -jvy, ' ' * '. \'.ftK.KJ v ' ';V- .$. 'r '- V: ' I `i*1-,- I- O.'.'I'J ' * /:<'; V '' i ,' < '< J t- .< . 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