Saytex

SAYTEX 102E Flame Retardant Product Bulletin, Ethyl Corp., Baton Rouge, La., 1992. 

Nelissen [157] has adopted a standard approach for the determination of FRs in polyester compounds (Figure 3.26). The analysis is complicated by spectral interferences of PET/PBT and by the complexity of FR structures, notably DBDPO, Saytex BT 93 W (ethylene-bis-tetrabromophthalimide), PDBS 80, Pyrochek 68PB, Saytex HP7010, Saytex 8010, FR1808, FR 1025, F 2400, BC 52 and BC 58 (brominated polycarbonate oligomers). 

Sauter mean diameter, 11 795, 13 135, 23 186, 188, 189, 190-191 Sauter mean drop diameter, 10 755, 756 Savannah River production reactors, 17 583 Savard/Lee gas-shielded tuyere, 16 151 Savard-Lee injectors, 14 741 Savory, 23 171 Saybolt color scale, 7 310 Saybolt Universal Seconds (SUS), 15 207 Saytex HP-7010, 11 474 S-B-S block copolymers, 24 706 S-B-S polymers, 24 713-714, 715 SC9... 

This article reports on two related pieces of news firstly that Albemarle Corp. of the USA has introduced a new reactive flame retardant, Saytex RX 8500 , as a replacement for pentabromodiphenyl ether (penta-BDE) in the production of flame-retardant PU foam. Secondly that Great Lakes Chemical Corp., the only manufacturer of penta-BDE, has announced plans to voluntarily phase out and cease production of this, and also octa-BDE, at the end of 2004. 

The two main brominated flame retardants used commercially in PET are PyroChek 68PB (see Figure 14.18) and Saytex HP-7010 (Albemarle). Both of these flame retardants are based on brominated polystyrene. While there are similarities between these flame retardants, they are not equivalents. There are quality and performance differences between these two products as they use different raw materials (i.e. polystyrenes) and the process for bromination is different. Saytex HP-7010 has better thermal stability and colour control than does PyroCheck 68 PB. However, if higher flow characteristics are a necessary property of the FR-PET, then Pyrocheck 68 PB would be the product of choice. Sodium antimonate is the appropriate synergist in PET since it is more stable at the higher processing temperatures required of PET and does not cause depolymerization of this polyesters. 

Hardy ML, Margitich D, Ackerman L, Smith RL (2002) The subchronic oral toxicity of ethane, 1,2- bis(pentabromophenyl) (Saytex 8010) in rats. Int J Toxicol 21 165-170... 

Single-dose gavage LDj, values of 5,000 and 6,200 mg/kg were detennined for pentaBDE (Saytex 115 and DE-71, respectively) in rats that were observed for 14 days (British Industrial Biological Research Association 1977 Pharmakon Research International Inc. 1984). Another study found that a single 5,000 mg/kg dose of pentaBDE caused deaths in four of five rats in the 14 days following treatment. 

Polybrominated Diphenyl Ethers. In the United States, Albemarle Corporation and Great Lakes Chemical Corporation market mixtures of PBDEs under trade names (e.g., Bromkal 70-5DE, DE-71, Tardex 50, Tardex 50 L, and Saytex 115 for pentaBDE mixtures DE-79, FR-1208, and Saytex 111 for octaBDE mixtures and DE 83, FR-300 BA, and Saytex 102 for decaBDE mixtures). The are also several trade names used by producers from Europe and Japan for the BDE mixtures. The chemical identities of commercial mixtures of pentaBDE, octaBDE, and decaBDE are listed in Table 4-3 (WHO 1994a). 

Argus Research Laboratories. 1985a. Embryo/fetal toxicity and teratogenic potential study of Saytex 115 administered orally via gavage to Crl COBS CD (SD) BR presumed pregnant rats. Submitted to U.S. EPA under TSCA Section 8E, Fiche no. OTS0000973. 

Pharmakon Associates Inc. 1984. Initial submission Acute oral toxicity in rats (14 days) of Saytex 115 (Pentabromodiphenyloxide). Submitted to the U.S. EPA under TSCA Section FYI, Fiche no. OTS0000972. 

Chlorinated Paraffins Decabromo-biphenyl ether (Saytex S-102 GLCC DE-83 DSB FR-1210)... 

Tetrabromo-Msphenol-A Ms(2,3-dibromopropyl ether) (Saytex F1P-800 GLCC PE-68 DSB FG-3100)... 

Tetrabromophalate diol (Saytex RB-79 GLCC PHT4-DIOL)... 

A polyethylene flexible closed cell polymeric foam containing 22wt% of EG as fire retardant is capable of pass the test of FAR 25 Appendix F of U.S. Federal Aviation Authority similar results were obtained using 18wt% of EG and 5 wt% of Saytex 102E (Albemarle, decabromodiphenyl oxide) and 3 wt% of antimony oxide.95... 

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