Document Lg12QO6jjqdLROqozwR0nx17z

MONSANTO t r%DZ LiT*i:<ATiJR Pn.'.MNL'NT FILE --x7 Monsanto Chemicals __fcvd_. AROCLOP.S As Used in Chlorinated Rubber Monsanto Technical Bulletin No. P-124 January 1, 1948 . Monsanto Chemical Company, St. Louis 4, Mo. AROCLORS As Used In C hlorinated Rubber * it AROCLORS, chlorinated biphenyl and chlorinated poly-pbcnyis, are effective plasti cizers and resins for chlorinated rubber base lacquers, varnishes and paints. These protective coatings are used where flame resistance, corrosion resistance, chemical resistance, i.e., resistance to adds, alkalies and water, and good electrical insulating properties are required. Some of the important applications for these protective and decorative coatings for wood, metal, brick, stone, concrete and fabric surfaces include; t. Wood and metal used in the construction of yachts, barges and other marine craft. 2. Structure! steel for bridges, buildings, roofs and power-line structures. 3. Structural materials used at chemical plants, pulp and paper mills, textile mills, petroleum refineries and gas works where protection against add fumes, alkalies and gas is essential. 4. For the protection of tank cars and other rolling stock and construction machinery against corrosive materials and weathering. 3. To protect equipment used in electroplating and as stop-off lacquers in this industry. 6. Masonry floors and walls. Concrete swimming pools and traffic paints. 7. As cable coatings requiring nonflammability, chemical resistance, water resistance and excellent electrical properties. B. Coatings for cloth to impart "waterproofing" qualities as well as chemical and flame 'Aaociojt-Reg. U.S. Pat. Off. 3oz ut --< >oz5 * Th# Inlomatl*. ttnl.ln.4 In this hull.tin It. t. <.. k.it ImtwIWgt, trM end Sw* !* ggmitlmm y.;r>>.vt gvarn>aa, *Jn at v,er* keyend *<** tentrel. (** Company disclaim, any liability Imurred In cennectlen with th* < lha del# *t Iwrtka.mara, nothing cantalnad h.raln thall It* seestrved il a receetmandetien 1* *'* "* ?'** axistlng Mttrini any malarial t Its Mb* 0514398 z o o TOWOLDMON0035877 WATER_PCB-00020346 oo MIXED SOLVENTS 70:30 97:3 83:17 41:7:35: *7 30:70 18:59:13 4:36 30:30:40 40:60 30:70 70:30 85:15 Acetone: hexane Acetone: mineral spirits Benzene: isopentane Ccllosolve : ethanol (anhydrous) ; ethyl acetate : xylene Cellosolve: turpentine Cellosolve : turpentine: mineral spirits Ethyl acetate: isopentane Ethyl acetate: isopropyl acetate: Troluoii Methyl isobutyl ketone: Troluoii Hi-Flash solvent naphtha: turpentine Methyl acetate: isopentane Shell TS-28: xylene IV. AROCLOR AND CHLORINATED RUBBER, PLASTICS FILMS The resinous Aroclon 2262 and 5460 show good miscibility with chlorinated rubber films as Lid down from toluene solution containing 20 per cent of the plastics, using 2 : z and X : I, Parlon; resin, ratios. Similarly, the plasticizer type Aroclor 1242,1254 and 1260 show good mistibility in chlori nated rubber. The properties offilms derived from the following formulations containing either Parlon and resinous Aroclors 1262 or 5460, or Parlon and the plastiazer type Arodors 1242,1254 or 1260 were studied. RESINOUS TYPE AROCLOR FOR PARLON PLASTICS Ingredients Parts by weight Parlon, 20-cp........................................ .... 16 x6 I6 12 12 12 Aroclor 5460....................................... 8 .8 12 12 12 Dibutyl phthalatc................................ Tung oil, Thcrmolyzed, 976 .... 4 5 3 3-75 Xylene or butyl acetate.................... 71 71 76 73 72.25 PLASTICIZER TYPE AROCLORS FOR PARLON PLASTICS Ingredients Parts by weight Parlon, 20-cp.......................................................... 20 Aroclor 1254 or 1260............................................4 Xylene................................................................. 76 20 20 7 20 73 70 Examination of the films cast from these lacquers revealed the following characteristics imparted by the Arodors: Adhesion'. -- Unplasticized chlorinated rubber films have very poor adhesive qualities. The lacquer film containing Arodor 5460 gave good adhesion to aluminum, bare sted, primed steel, galvanized iron and Transite surfaces. Other commerdally available resins, particularly oil modified alkyd resins, tested in similar'films gave better adhesion than Arodor 5460 to such surfaces as glass, tin, copper, sealed wood and cellophane. The lacquer films plasticized with Aroclors 1254 or 1260 gave good adhesion to Transite, cello phane, galvanized iron and primed steel surfaces. Some of the other commerdally available plasticizers tested in similar films gave better adhesion than the Arodors to aluminum, tin, bare sted, copper and sealed wood surfaces. Aroclors, alone, possess pronounced adhesive qualities. Doubtless, where the objective is to produce adhesives, by varying the Arodor content or by using a mixture of Aroclors in the chlorinated rubber lacquers, much better adhesion to all of the surfaces would be accomplished than was the case with the type of plastics films studied. Resistance to Aqueous Solutions:-- Arodors 1254 or 1260 used as plastidzers and Arodor 5460 used as a resin in chlorinated rubber produced plastics films possessing satisfactory resistance to 10 per ceQt hydrochloric add, 5 per cent sodium hydroxide, $ per cent sodium chloride solutions and to water spot tests. obi^99 | TOWOLDMON0035878 WATER_PCB-00020347 o o. Film Hardness:-- Using Aroclor 5460 in ratios of 5 : xo and 10 : 10, Aroclor: Parlon, deddedly softer films were produced than when other commercial resins were similarly wed. Likewise, Aroclors 1254 or 1260 used in ratios of 2:10 and 5 : xo, Aroclor: Parlon, gave softer films than obtained from other commercial plasticizers, used at these concentrations. This indicates, the strong plasticizing action of these Aroclors on chlorinated rubber. Cold-Check Resistance:-- Regarding cold-check resistant qualities imparted to chlorinated rubber films, Aroclor 5460 is somewhat superior to Bakclitc type resins, but not as good as long-oil modified alkyds. Aroclor 1260 used as a plasticizer rates, in terms of cold-check resist ance, somewhat better than Aroclor 1254 and nearly as good as the best of the other plasticizers studied for this property. Miscellaneous Properties:-- Parlon plastics films containing Aroclors 5460, 1254 or 1260 have entirely satisfactory sanding and polishing characteristics. Weatherability:-- Pigmented chlorinated rubber finishes containing Aroclors have consistently shown good outdoor weatherability. However, similar unplgmented finishes, regardless of the plasticizer or resin used and also in the absence of these additives, have been found to give poor outdoor weathering. Relatively poor resistance to ultraviolet light is a weakness of chlori nated rubber. Most pigments, with the exception of ultra-marine blue arc usable with Parlon finishes and are recommended when the coating is to be subjected to outdoor weathering or exposed to ultra violet light. However, there is considerable variation regarding the protection offered by different pigments. Inspection of Parlon-fortificd alkyd enamels showed the weatherability varied from 6} months for the enamel pigmented with chrome green to 4 months for enamel pigmented with a titanium dioxide-iron blue combination. V. USES FOR AROCLORS IN CHLORINATED RUBBER COATINGS A. Finishes for Alkaline Surfaces: Aroclors, as well as chlorinated rubber, are highly resistant against alkalies and moisture. Because of these properties paints based on Aroclor and chlorinated rubber combinations are used in large quantity for application to concrete floors, walls, swimming pools, etc Examples of this type of paint are given in Table IV. TABLE IV. AROCLOR PLASTICIZER IN CHLORINATED RUBBER PAINTS FOR ALKALINE SURFACES Materials (Examples of starting formulas) Formula 1 for basement floors Formula 2 to meet Fed. Spec. TT-P-91 (Part* by weight) Formula 3 for swimming pools Parlon, 20-cp. type........................ Aroclor 1254.................................... Rezyl 869........................................ .... Aroclor 5460 or Cumar Pio . . . Bcckosol 31.................................... Tung oil, Thermolyzed, 976 . . . Titanium dioxide............................ Zinc oxide........................................ Silica flour....................................... ... Carbon black.................................... Xylene............................................... Hi-Flash naphtha............................ Totals ................................ 8 J 18 10 6 l6 2 0.5 47-5 IOO X4.6 4-4 *9-7 5 47.5 100 B. Acids end Alkali-Resistant Finishes: Particular care must be exercised in the choice of resins and plasticizers for use in chemical resistant paints. For this purpose, Aroclors arc outstanding and arc being used successfully in the add and a!kali-rcsistant chlorinated rubber formulations given in Table V. 0514400 I TOWOLDMON0035879 WATER_PCB-00020348 TABLE VII. RESINS AND PLASTICIZERS MISCIBLE IN PARLON RESINS Ambcrol 801, 806P, ST-137, F7 Aroclor 1262, 5460 Aroplaz 920, 930,935,940 Bakclitc XR-3180, XR-4503, XR-4006, BR-2963, XJ-9868, BR-1329, BR-3360 Bcckadtc 11x2 Bcckamine P-138, P-254 Supcr-Beckamine 3501 Bcckopol 1400 Beckosol x (solid), x8,3X, 34, 40,1329 Beetle Resin 227-8 Clorafrn 70 Copal Cumar Pio Dammar Duraplcx C-45-LV, C-48, C-49, C-50-LV, C-51, C-62, D-62, D-62, E-7X, E-71-A, E-73 East India gum Estet gum Ethyl Methacrylate Esterol 750 Forxnvat Gelva 2.5 Glyptal 1247, 2450, 2454,2458,2464,2466,2500 Lcwisol 2L, 28, 33 Methyl Methacrylate Polymers Neville R-3, R-10 Pentalyn A, G, M, X Petrex 1,130H Phenac 633-M Rezyl xi6, X3I5 880,1x03 775. 803, 807, 829, 869, Rosin Santolitc MUP Staybclitc Ester 1,2, xo Staybclitc resin Supcr-Beckatite xooi Syntex Hi, H3, H12, 17, 213, 22, 28, 29,32,36 Teglac 15, Z-152 Velsicol AD6-3 Vinsol Amylchloro naphthalene Amyl oleate Amyl stearate Aroclor 1242 Arodor 1254 Aroclor 1260 Butyl myristate Butyl stearate Camphor Castor oil, raw Castor oil, dehydrated Castor oil fatty acid esters Ccllosolve phthalate Coconut fatty acid esters Diamyl naphthalene Diamyl phthalate Dibutyl phthalate Dibutyl scbacate Diethyl phthalate Dimethyl phthalate Fish oil Hcrcolyn Linseed oil PLASTICIZERS Methyl ccllosolve oleate Monoamyl naphthalene Naftolen * Neville heavy oil No. 2 Ncvillite oil Oidcica oil Palm fatty add esters Perilla oil Polyamyl naphthalene Resinous Products C-24 Santicizer B-16 Sanddzcr M-17 Sextol phthalate Sextol stearate Soya bean fatty add esters Soya bean oil Thcrmoil A Tributyl phosphate Tricrcsyl phosphate Tricthyl titrate Triphcnyl phosphate Tung oil, Thcrmolyzed, 976 The strong points and limitations of the resins and plasritizcrs given in Table VII relative to the properties they impart to chlorinated rubber arc known. None give the important over-all desired qualities attained by the use of Arodors. If occasion arises to consider the use of these materials in specific applications for chlorinated rubber, then more detailed information about them will be given. 041*401 I TOWOLDMON0035880 WATER_PCB-00020349 The Aroclor compounds impart the following advantages to the films cast from these lacquers: Adhesion Unplasticized chlorinated-rubber films have very poor adhesion. The lacquer film containing Aroclor 5460 adheres well to aluminum, bare* steel, primed steel, galvanized iron, and Transite surfaces. The lacquer films plasticized with Aroclor 1254 or 1260 give good adhesion to Trans^ ite, cellophane, galvanized iron, and primed-steel surfaces. Though compounds with an Aroclor alone possess pronounced adhe sion qualities, better adhesion to all of the surfaces results if mixtures of Aroclor or varied contents are used. Resistance to Aqueous Solutions Chlorinated-rubber films with Aroclor 1254 or 1260 (plasticizers) and Aroclor 5460 (resin) show satisfactory resistance to solutions of 10-per cent hydrochloric acid, 5-per cent sodium hydroxide, 5-per cent sodium chloride, and water-spot tests. Film Hardness 'j rSofter films are produced with Aroclor 5460 in ratios of 5:10 and 10:10 | (Aroclor and Parlon) than with other commercial resins in similar i mixtures. Likewise, softer films result from Aroclor 1254 or 1260 in 1 ratios of 2;10 and 5:30 (Aroclor and Parlon) than with other com\ mercial plasticizers at these concentrations. These tests show that j i Aroclor compounds have strong plasticizing action on chlorinated j rubber. ------- I, " Cold-Check Resistance . Aroclor 5460 is superior to phenol-formaldehyde resins in cold-check resistance imparted to chlorinated-rubber films, but not as good as long-oil-alkyd modification. Aroclor 1260 is a somewhat better plasti cizer than Aroclor 1254. Weather Resistance Pigmented chlorinated-rubber finishes containing Aroclor have con sistently withstood outdoor weather tests, but unpigmented finishes do not weather well regardless of the resin or plasticizer used. Poor resistance to ultraviolet light is also a weakness of chlorinated rubber. Most pigments (except ultramarine blue) are usable with Parlon and are recommended if the coating is to be subjected to outdoor weather or ultraviolet light. However, pigment protection varies con siderably. Inspection of alkyd enamels fortified with Parlon showed weatherabiiity varied from 63 months with chrome green to 4 months for titanium dioxide-iron blue combinations. Sanding and Polishing Properties Plastic films compounded with Parlon and Aroclor 5460, 1254, or 1260 have showed satisfactory sanding and polishing characteristics. ow"01 11 | TOWOLDMON0035881 WATER_PCB-00020350