Document gDLkJ49p2w4YLxn7rXbM48mnJ

BFGOODRICH CHEMICAL LIMITED ALTONA TECHNICAL SERVICE LABORATORY REPORT ( V FOR ^PRODUCT DEVELOPMENT DEPARTMENT EXTRACTION OF BISPHENOL A FROM FINISHED PVC PRODUCTS v 1104021 Project No: 6980-2 By: Greg Brown Date: 20th October, 1980 BFG09408 iti'iaxmiucii ciu'jiicai. i.imitkii Al.TttNA PROJECT NO: 6960-2 DATE: 20th October, 1960 EXTRACTION OF BISPHENOL A FROM FINISHED PVC PRODUCTS INTRODUCTION Hils work was Initiated as an extension of Project No, 6980-1 la order . to gain approval for the use of Blaphenol A (BPA) as a shortstop In the production of Poly (vinyl chloride) (PVC). Having determined the level of residual BPA In PVC resin, it was necessary to determine Its extractablllty from food contact products. CONCLUSION The work showed that aqueous solvents did not extract a detectable amount of the BPA from the finished product. Fatty type solvent, heptane, extracted 17/ig/square Inch. Results are shown In Appendix II. iqfPERTMENTAL 1. Introduction As there Is no Australian Standard covering the presences of BPA in plastics used for food contact applications, the development of the extraction procedures was based on the American FDA method No 175-300, pages 505-510. Two formulations were tested, one representing rigid food packaging (E) such as bottles and the other (6) representing flexible food wrapping such as film. They were prepared aslng the resin which had been shortstopped In a plant trial, and were known to contain 62 ppm of residual BPA. These formulations are shown In Appendix I. Each formulation was fluxed on a steam heated laboratory two roll mill. Plaques 15cm x 15cm x 0.125cm were prepared on a steam heated press. Small samples, 4cm x 4cm x 0.125cm, were then cut for the extraction tests. e 21104022 BFG09409 V The British Plastics Federation Registered Office 5 Belgrewe Square London SW1X 8PH A company hrrmad by guarantee Regntered m England No 282883 4th December 1980 1 2 FEB i98| Telephone 01-235 9483 Telegram* Platted London SW1 Telex 8861526 Plated G B. La Fontaine Esq., National Divisions Manager, The Plastics Institute of Australia Inc., 157 Fitzroy Street, St. Kilda, Vic. 3102, Australia. Dear Barry, Dr. Holmes-Walker has passed your letter of 21st November Co me for attention. According to our Code of Practice for Plastics in Food Contact Applications, which we publish in cooperation with the British Industrial Biological Research Association, BISPUENOL A is considered a safe additive for use in such applications. It is actually identified as an additive for polyesters (with a maximum level of 70% W/W of final compound) suitable for use in contact with all food products. I trust this information may be of help to you. Yours sincerely. C.C. Parkhouse Assistant Director Head of Technical Division BFG09459 *0 hH 3 APPENDIX UNION CARBIDE LITERATURE ON BISPHENOL A (F40900B) 1 60>OTTZ COPY OF THE LETTER FROM UNION CARBIDE (AUSTRALIA) RE PURITY OF BPA BFG09482 UNION CARBIDE AUSTRALIA LIMITED INCMfOMTU IN NCW SOUTH WALKS 505 ST. KILDA ROAD, MELBOURNE, VICTORIA, 3000. AUSTRALIA G.P.O. SOX 1J27L, VIC. 3001 TELEGRAMS] "UNICARBIDE'* MELBOURNE TELEPHONES: 20-1241. 26-2332 1st March, 1978 Mr* Vincent J* Scully Technical Service Manager B.F. Goodrich Chemical Limited ALTONA, VIC* Dear Mr* Scully, Be: PRODUCTS FOR USE AS ANTIOXIDANTS IN PVC UNDER AUSTRALIAN STANDARD 2Q7C We advise that chemicals supplied by UCAL are manufactured to Internationally Accepted Standards of quality and are free from impurities likely to have an injurious effect on health* Applies to: - Ethyl Acrylate - Potassium Persulfate - Bis Phenol A* To assist in preparation of a case for the last named eheaieal we enclose a Union Carbide brochure on the product* Yours faithfully WLR/eb Enc: brochure W*L* ROUTLEY Commercial Development Manager m voTTZ BFG09483 T APPENDIX IX UNION CARBIDE LITERATURE "UCAR(R* BISPHENOL A APPLICATIONS" BFG09484 8 T T tO T 'fS Application Areas 1. Textiles Acrylics Application of the mixture that results from heating Bisphenol A and furfuryl alcohol to polyacrylonitrile fibers speeds dyeing and development of deeper shades from direct or acid dyes*1 >. Cellulosics ? Studies, on the sorption and affinity of Bisphenol A on cellulosics*1 >, especially cotton*3!, led to the conclusion that it can be used as the coupling component in cold dyeing. A report that Bisphenol A is useful for improving the crease recovery properties and dimensional stability of cotton and viscose rayon fabrics has appeared*4 >. Polyesters * Bisphenol A is useful for the solvent bonding of polyester-derived nonwoven fabrics*5 >. High temperature dyeing of "Dacron" fabric with disperse azo dyes based on Bisphenol A coupled with diazonium compounds is possible*6!. Nylon Metal complexes (copper, nickel, chromium) of the product obtained from coupling Bisphenol A with diazotized anthraniiic acid are useful dyes for nylon*7 >. Aqueous emulsions of Bisphenol A are useful for the solvent bonding of Nylon 66 fibers to produce nonwoven fabrics**!. Impregnation of twisted, nylon multifilament yams with 4-12 per cent methanolic Bisphenol A solutions, followed by heating at 150C. for 10-20 seconds produces threads that are suitable for high speed sewing machines*8!. Bisphenol Ascertaining adhesives for nylons are described in the next section. Polyurethane Elastomeric Fibers (Spandcx) A stabilizer package containing Bisphenol A imparted excellent heat, light, and chlorine bleach stability to polyurethane type elastomeric fibers*9!. Bisphenol A (0.3%) combined with piperidino sulfides (e.g 2,2,6,6-tetramethylpiperidino disulfide -- 0.3%) is one such combination. Wool Metal complexes (copper, nickel, chromium) of the product obtained from coupling Bisphenol A with diazotized anthraniiic acid are useful dyes for wool*7!. General Emulsions containing Bisphenol A in addition to other ingredients fj BFG09512 34 ~T 110414G Mil i, 4i facilitated the shaping of textiles made from either natural or synthetic fibers* i0>. Cold dyeing with Bisphenol A-coupled diazo compounds yields products with good wet fastness*1 1 >. Use of Bisphenol A in conjunction with C, 6--Ci g fatty acids and monoethanolamine stearate facilitated the granulation of finely divided pigments, dyes, and filler materials*12 >, 2. Adhesives UCAR Bisphenol A complies with FDA regulations for use as a component of adhesives used in food packaging*13 >. Adhesives for pretreated steel based on polyvinyl chloride formulations that incorporate 1.5 parts of Bisphenol A and 4.5 parts of hexamethylene tetramine have been described*14 >. Fusible adhesives for plasticized poly(vinyl chloride) contain 10-30 parts of Bisphenol A and 70-90 parts of polyamides derived from fatty acids*15 K Several reports describe the utility of Bisphenol A for bonding textile fibers and fabrics, especially nylons. Acetone solutions of Bisphenol A are useful for bonding Nylon 6 and other polyamides*16 >. Blends of polyamides (Nylon 6 and 66) with Bisphenol A and octyl p-hydroxybenzoate are effective adhesives for nylons, polyesters, and cotton fibers*1 7>. They excel in their laundering and dry-cleaning resistance. Peel strengths of nylon laminates with polyester/cotton mixed fabrics were markedly enhanced when up to 20 per cent of Bisphenol A was incorporated into the nylon filament*1 *>. A 3. Thermographic Recording Materials ii Bisphenol A finds utility as an ingredient in thermographic or heat '1 developable recording and reproducing materials. One report uses the adduct of Bisphenol A with isopropylamine in a heat sensitive recording layer material*1 *>. It undergoes a color change at 154-7C. Several other reports describe the use of a color-forming reaction 4 between crystal violet and Bisphenol A*20>21>22>. Paper is coated with poly(viny! alcohol) containing particles of crystal violet lactone and Bisphenol A. On heating, color forms where the Bisphenol A melts. 4. Photographic Antifoggant Photographic silver halide emulsions are stabilized by the addition of Bisphenol A against fog<22>. When part of the gelatin has been replaced b\ a poiy(N-vinyllactam), 5-50 millimoles Bisphenol A/mole of silver halide is recommended*24V Similarly, 4.7-30 millimoles Bisphenol A/mole of silver halide are used to prevent fogging by non-optical sensitizers containing polyoxyaikylene groups*2 5 >. BFG09513 i 25 2110411 5. Electroplating The addition of Bisphenol A to n chromium electroplating bath at a concentration of >0.006 g./l. suppresses the atmospheric entrainment of liquid particles of inorganic salt solution*2 6 >. This entrainment, which is due to H* and O* bubbles liberated at the cathode can be reduced by up to 95-100 percent. Tin plating bath solutions containing 2 g./liter of Bisphenol A are much improved with respect to loss of tin by oxidation of stannous to stannic sulfates. The latter is deleterious because it hydrolyzes to stannic oxide which precipitates, thereby causing a deterioration in the quality of the tin plate*27 >. 6. Battery Electrolyte The addition of 0.05 per cent of Bisphenol A to a battery electrolyte is reported to improve the storage life of the batteries prepared therefrom*2 >. Capacity and discharge voltage were not impaired. 7. Leather Tanning Tanning and dispersing agents containing Bisphenol A are reported to yield leathers possessing good light fastness<29>. Bisphenol A can also be used for chrome post-tanning, and it can act as a fixative for pigments in textiles. 8. Sand Mold Binder Binders for sand molds based on Bisphenol A possessed improved properties*30). A typical recipe mixed 100 parts of Bisphenol A and 15parts of hexamethylenetetramine with the sand followed by a heat cure. 9. Lacquer Peptization A procedure for the peptization of gelled lacquer or resin solutions employs 20 per cent Bisphenol A solutions in butanol or toluene*3'). This can be effected by heating and stirring the gelled lacquer at 60C. with 5-10 per cent of Bisphenol A solution. 10. Drilling Muds Bisphenol A effectively preserves the emulsion stabilizing effect of lecithin when it is used in dry concentrates for invert emulsion well fluids. It was one of the 5 best compounds of the 31 that were tested. It was used at a concentration of 0.1-20 per cent by weight based on the lecithin weight*32). BFG09514 a* 21104148