Reference

Hair dyes

Hair dyes. Iwabe, Koichi; Ozawa, Tatsuya; Matsuoka, Masahiro; Tanaka, Mumeo; Horikawa, Hiroumi (Shiseido Co., Ltd., Japan). Japan. Kokai JP 51151341 25 Dec 1976 Showa, 5 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: A61K007-13. APPLICATION: JP 75-76106 20 Jun 1975. DOCUMENT TYPE: Patent CA Section: 62 (Essential Oils and Cosmetics) Safe and highly effective hair dyes contain .gtoreq.1 dyeing promoters including 1-phenyl-1,2-ethanediol (I) [93-56-1], O-monocarbethoxy-1,3-propanediol [62502-19-6], .gamma.Several reagents with their cas registry numbers 96-48-0 and 108-29-2 are used here.-butyrolactone [96-48-0], .delta.-valerolactone [542-28-9], .alpha.-methyl-.gamma.-butyrolactone [1679-47-6], .gamma.-valerolactone [108-29-2] and.beta.-methyl-.gamma.-butyrolactone [1679-49-8]. Thus, a prepn. contains Remazol red 1, I 12.0, citric acid 0.15, hydroxyethyl cellulose 0.3 and ion-exchanged H2O 87.55%. .

Electrochemical polymerization of dicarboxylic acids - II

Electrochemical polymerization of dicarboxylic acids - II. Oligomers and side products in the polymerization of adipic acid. Gozlan, A. 108-29-2 is the cas registry number. This chemical is also mentioned in this article.; Zilkha, A. (Dep. Org. Chem., Hebrew Univ. Jerusalem, Jerusalem 91904, Israel). Eur. Polym. J., 20(12), 1199-208 (English) 1984. CODEN: EUPJAG. ISSN: 0014-3057. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) The electrochem. polymn. of adipic acid in MeOH and in MeOH-pyridine (1:1) via the Kolbe reaction n HOOC(CH2)4COOH ? n (CH2)4 + 2n CO2 + n H2 was investigated as regards the oligomeric and side products. Gaseous and volatile compds. were identified as C4 and C8 hydrocarbons besides g- [108-29-2] and d-valerolactone [542-28-9]. The less volatile compds. were sepd. on silica gel columns to fractions viz. that eluted by heptane which contained hydrocarbons, that eluted by C6H6 which contained ether and ester groups, and that eluted by MeOH which contained higher oligomeric products contg. O. Four types of hydrcarbons were formed, viz. n-alkanes, n-alkenes, x-alkenes (the place of the double bond is not known), and cycloalkanes. Satd. and unsatd. oligomeric mono- and di-carboxylic acids were also formed. .