Reference

Chromatographic analysis of tar dyes in cosmetic products

Chromatographic analysis of tar dyes in cosmetic products. Part 3. Ohnishi, Shigeki; Nishijima, Yasushi; Kijima, Keiji; Kano, Shizuo (Cosmet. Lab., Kanebo Ltd., Odawara, Japan). Bunseki Kagaku, 26(12), 814-18 (Japanese) 1977. CODEN: BNSKAK. ISSN: 0525-1931. DOCUMENT TYPE: Journal CA Section: 62 (Essential Oils and Cosmetics) Fat-sol. tar dyes for cosmetic products (C.I. No. 12120 [2425-85-6], 26100 [85-86-9], 12085 [2814-77-9], 12075 [3468-63-1], 12315 [6448-95-9], 26105 [85-83-6], 12140 [3118-97-6], 12100 [2646-17-5], 11680 [2512-29-0], 11380 [85-84-7], 11390 [131-79-3], and 47000 [8003-22-3]) were sepd. on a LiChrosorb SI 100 column by an isocratic elution technique. The eluent was monitored by a wavelength tunable detector (420-500 nm). Suitable solvent systems were Et2O-n-hexane for the sepn. of No. 12140 and 12100, Me2CO-n-hexane for the sepn. of No. 12075 and 12315, and CHCl3-n-hexane for other 8 dyes. The plots of peak height vs. amount of tar dyes were linear with the injection volume of 5 mL or less without reducing the column efficiency. The recoveries from wax base of lipsticks were in the range 91.9-97.0%.

Light stable thermoplastic resin compositions

Light stable thermoplastic resin compositions. Lohmeijer, Johannes Hubertus Gabriel Marie (General Electric Co., USA). PCT Int. Appl. WO 8401781 A1 10 May 1984, 14 pp. DESIGNATED STATES: W: AU, BR, JP. (English). (World Intellectual Property Organization). CODEN: PIXXD2. CLASS: IC: C08K005-16; C08K005-41; C08K005-42; C08L071-04. APPLICATION: WO 83-US1668 26 Oct 1983. PRIORITY: NL 82-4181 29 Oct 1982. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) Thermoplastic compns. having resistance to light discoloration contain 1 or more dyes capable of bleaching on exposure to light in an amt. which compensates for the color change of the thermoplastic. Thus, a compn. contg. 2,6-xylenol polymer [25134-01-4] 35, rubber modified polystyrene 65, SBR 5, C.I. Solvent Yellow 33 [8003-22-3] 0.025, C.I. Solvent Red 52 [81-39-0] 0.013, Cr oxide green 2.0, Fe oxide brown 0.08, ultramarine blue 0.05, TiO2 1.0, and carbon black 0.019 part was extruded, pelletized, and molded into sheets that, when exposed 300 h to filtered Xe radiation had color change DEab = 2.1 compared with 8.3 for a control contg. no dyes.