Document ZBM7ekVb2DMv6z5ZqRLZ0gGxZ

jtv.V 1 197V for polyvinyl acetate-emulsion adhesives 1J. ywjJg J- TECHNICAL BULLETIN No. PL- 321 REVISED APRIL, 1963 Monsanto ST. LOUIS 66, MISSOURI O DSty 323457 STLCOPCB4075104 INTRODUCTION >* Monsanto Arodor* chlorinated polyphenyls are a series of compounds serving a variety of needs. Each Arodor can serve as a plasticizer for many of the synthetic resins. Properties imparted vary with the Arodor chosen. In this respect the family of Aroclor compounds is analogous to a series of phthalate esters. Arodor 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) Arodor 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 ortAo-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. Arodor: Monsanto Chemical Company Trademark. Registered in U. S. Patent Office. I 3W 323458 STLCOPCB4075105 COMPATIBILITY j . . >< 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. JLABORATORY 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 Properties ortho-Nitro- Dibutyl Arodor Arodor Arodor biphenyl Phthalate 1221 1232 1242 Shore Hardness, A-scale 82 69 66 86 97 Low Temp. Hex., C +2.2 -- 10.2 -5.9 44.0 4-5.3 Volatility (% plasticizer lost after 24 hre. at 86 C) 3.8 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 'Initial viscosity of the polyvinyl acetate emulsion tested was 1500 centipoises. DSW 323459 $ Q) STLCOPCB4075106 TYPICAL PROPERTIES AND SPECIFICATIONS icsis -coDeucicC: o\ -`ionsao-.c- sr.-w Aroclor 2221 1222- arc i._~_ -are eacr comna* Property Aroclor 1221 Aroclor 1232 Aroclor 1242 Appearance Mobile, Colorless, dear liquid Practically colorless,1 mobile oil Practically colorless, mobile oil Refractive Index @ 20 C Chloring^^.",,orarc*_;J._ -j 1.617 - 1.618 X`V 1.620-1.622 :3Zj0;6.5 1.627-1.629 *.3iGr u'J 3:1;" c Density; lbs- per gal., - ' ' <3 25 C' su:'_i,,.e ; ::rer i--: lae 10.55. 11.50 Boiling Point, 760 mm Hq Pour Point (ASTM D-97) Cr,M ,A,,. . .275o--320 sC . , ?90P425- C ^r_.4422555'-:3660 C (102 pans oo;y-vir,vi eceTere er icrsjcr; I ! P-- Crystals at 1 C. --35.5 C --19 C Flash Point (C.O.C.) r-crrr.-.E-tc*fro?s.-H nre Point (C.O.C.) ~S>r*ort r~.5rc frcu.; -r-^ 4 286-3Q25-;E4v141-15Q^nenv 349O'F. -- 176 c. s: 30S41Q f. ~roc,c348456F. Ar 14SL--152- C. ;22 : 176-}99 C. i 46frT7.-----------------None, to---------- 238 C. -- boiling-point Viscosity, S.U.S., ^ . _ @ 37.8^C "- ` " 38-41 54.4 C . 98.9^d"; T> ' r' Phaser tor. alter 2- cri. a: r r. - C Distillation Range 35-37 30-31 . . : - -pzsu_2?5-320 C "44-51 39-41 31 -Jl 295-355 C 80293" 49-56 4.5 ~ 325-360 C temperarjr- M 0 N S ANT0._S PEC I F 1 CAT 10 N S 7 i *i -. Property ^ Color, APHA max. ; c;; 5 Specific Gravity A 25/155 C 1" ' Acidity,' mg. KOII/gm. max. ':rv` Viscosity @ 100 F., S.U.S. (37.8 C) Aroclor 2 2 7 1221 100 ;24.; 1.182-1.192 " crO^)l4 :e;--= 38-41 Aroclor 1232 2 2 "2 Aroclor 1242 .. 100 2:n: 100;: . - ._ - *>- - 1.270-1.280 0.014' 1.381-1.392 , 0.015 44-51 80-93 &A*> STLCOPCB4075107 ODOR MASKING FOR SPECIAL APPLICATIONS j . -- - .- . . >> 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). -- Odormasque: Registered Trademark of Polak 7 Schwarz, Inc., New York. N. Y. , 0 TOXICITY AND SAFE HANDLING The oral LD50 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 ran 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.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 bulletin is, to our best knowledge, true and accurate, but all re commendations or suggestions are made without guarantee, since the conditions of use ere beyond our 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 a recommendation to use any product in conflict with existing patents covering any material or its use. R:AEH-2M-3. (3 4 STLCOPCB4075108 'm ST. LOUIS EG. 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 Toronto Vancouver osnN STLCOPCB4075109