Reference

Suitable homo- and copolymers of propylene for technical application

Suitable homo- and copolymers of propylene for technical application. Jaggard, James F. R.; Schoene, Werner; Schweier, Guenther (BASF A.-G. , Fed. Rep. Ger.). Ger. Offen. DE 3322937 A1 3 Jan 1985, 13 pp. (German). (Germany). CODEN: GWXXBX. CLASS: ICM: C08F010-06. ICS: C08F004-14; C08F004-16; C08F004-12; C08L023-10; C08K003-22; C08K005-10; C08K005-53. APPLICATION: DE 83-3322937 25 Jun 1983. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 37 Polymers with improved resistance to yellowing and abrasion are prepd. by polymg. C3H6, optionally with other olefins, in the presence of TiCl3-AlCl3 complexes, esters, Al alkyls, and phenols and immediately adding MgAl hydroxides, pentaerythritol tetrakis[3-(3,5-di-tert-butyl-4-hydroxy)phenyl)propionate] (I) [6683-19-8], tetrakis(2,4-di-tert-butylphenyl) 4,4'-biphenyldiphosphonite (II) [38613-77-3], and Ca stearate [1592-23-0]. Thus, stirring 10,000 parts liq. C3H6 with 0.61 parts Et2AlCl [96-10-6], a ground 2.9:1 mixt. of 3 TiCl3.AlCl3 and BzOPr [2315-68-6] (Ti-Et2AlCl ratio 1:5), octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate [2082-79-3] (Et2AlCl-phenol ratio ) , and H at 80° for 2 h and mixing the resulting polypropylene [9003-07-0] with Mg0.72Al0.28(OH)2.28.H2O 0.15, I 0.10, II 0.05, and Ca stearate 0.10 phr gave a product having yellowness index 1.3 and 6.9 after 0 and 2.5 min, resp., at 250°; compared with 2.5 and 25.3, resp., without Ca stearate.

In vitro toxicity of some cosmetic ingredients

In vitro toxicity of some cosmetic ingredients. De Angelis, I.; Giubilei, L.In this study， 136-60-7 and 2315-68-6 are also used.; Stammati, A.; Zampaglioni, F.; Zucco, F.; Bartolini, G.; Salvatore, G. (Lab. Tossicol. Comp. Ecotossicol., Ist. Super. Sanita, Rome, Italy). Food Chem. Toxicol., 24(6-7), 477-9 (English) 1986. CODEN: FCTOD7. ISSN: 0278-6915. DOCUMENT TYPE: Journal CA Section: 62 (Essential Oils and Cosmetics) Section cross-reference(s): 4 Toxicity of a series of n-alkyl benzoates in cosmetics was investigated on a continuous cell line (HEp-2). Dose-effect correlations were established for Me, Et, Pr and Bu benzoate [136-60-7] by detg. the total protein content of the cells at 24 h. The toxicity ranking of these benzoates according to the IC50 was Bu > Pr > Et > Me benzoate [93-58-3]. Expts. carried out on time-effect correlation and on colony-forming ability seem to suggest that the damage does not increase with time and is probably caused mostly by an initial selective effect on the cell population. .