Reference

Preparation of 2-methyl-6-tert-butylphenol

Preparation of 2-methyl-6-tert-butylphenol. Hu, Cuilan; Hou, Bo; Tian, Xiaofeng (Shanxi Provincial Institute of Chemical Industry, Taiyuan, Peop. Rep. China). Xiandai Suliao Jiagong Yingyong, 14(4), 4-6 (Chinese) 2002 Zhongguo Shihua Jituan Gongsi Xiandai Suliao Jiagong Yingyong Qingbao Zhongxinzhan. CODEN: XSJYAM. ISSN: 1004-3055. DOCUMENT TYPE: Journal CA Section: 45 (Industrial Organic Chemicals, Leather, Fats, and Waxes) The prepn. of 2-methyl-6-tert-butylphenol from o-cresol and isobutylene using Al as catalyst is reported. The effects of catalyst content and reaction time and temp. were detd.In this experiment, several chemicals are used like 95-48-7 and 2219-82-1 The product yield reached 82.7%. .

Stabilized, polymerizable, vinyl or vinylidene monomer-containing compositions

Stabilized, polymerizable, vinyl or vinylidene monomer-containing compositions. Restaino, Alfred Joseph (ICI United States, Inc., USA). Ger. Offen. DE 2631512 3 Feb 1977, 50 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C08F012-08. PRIORITY: US 75-595412 14 Jul 1975. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) Biphenol derivs. are used as polymn. inhibitors in compns. contg. a vinyl or vinylidene compd. Thus, a soln. of 0.4 g Cu(OAc)2 in 50 mL H2O was added to a mixt. of 48.8 g 2,6-xylenol [576-26-1] and 0.20 g Na lauryl sulfate in 150 mL H2O at 55.degree. and after 1.5 min 8 mL 1.0 N Na2CO3 was added dropwise. The mixt. was heated 6 h at 80.degree. to give 3,3',5,5'-tetramethyl-4,4'-biphenol (I) [2417-04-1]. When a mixt. of 100 g styrene [100-42-5] and 0.01g 3,3'-dimethyl-5,5'-di-tert-butyl-4,4'-biphenol [3432-00-6] was heated at 100.degree., the compn. had relative viscosity 1.0, 1.0, 1.1, 3.3, 19.6, and 46.4 after 0, 15, 30, 60, 120, and 240 min, resp. A mixt. of 1220 g .alpha.,.alpha.'-[(1-methylethylidene)di-4,1-phenylene]bis[.omega.-hydro xypoly[oxy(methyl-1,2-ethanediyl)] (the reaction product of bisphenol A and propylene oxide) and 338 g maleic anhydride was heated to 210-5.degree. in 1 h, kept at this temp. for 5 h, and reacted 1 h at 28 torr. Then 0.78 g I was added to the mixt. which was heated 1 h at 215.degree.. The polyester [51259-75-7] product with acid no. 15.4 and OH no 46.7 was mixed with an equal amt.There are some commonly used reagents with their cas registry numbers 2219-82-1 and 108-05-4 in this article. of styrene and a catalyst mixt. of 1.0 g 60% methyl ethyl ketone peroxide, 1.0 g Co naphthenate, and 0.2 g dimethylaniline. The compn. had gel time 7 min, gel peak time 7 min, and peak temp. 196.degree., vs. 4 min, 6 min, and 197.degree., resp., for a similar polyester compn. contg. no I. .