Reference

Gas chromatography of benzaldehyde, o-, m- and p-tolualdehydes using glass capillary columns

Gas chromatography of benzaldehyde, o-, m- and p-tolualdehydes using glass capillary columns. Hoshika, Yasuyuki; Takata, Yoshinori (Aichi Environ. Res. Cent., Nagoya, Japan). Bunseki Kagaku, 25(8), 529-33 (Japanese) 1976. CODEN: BNSKAK. DOCUMENT TYPE: Journal CA Section: 59 (Air Pollution and Industrial Hygiene) Section cross-reference(s): 80 Aldehydes, e.g. benzaldehyde [100-52-7] and tolualdehydes were detected in exhaust gases by gas chromatog. Because of the dfficulty of direct sepn. of m- [620-23-5] and p-tolualdehyde [104-87-0], an indirect method was adopted by formation of a Schiff base with an aliph. primary amine, e.g. BuNH2. Gas chromatog. conditions were: glass column (0.25 mm i.d. x 30 m length) coated with polyethylene glycol 20M; 100.degree.; N 1.3 ml/min; n-Heptadecane internal std. Relative retentions of RC6H4-CH:N(CH2)3Me were: R = H 0.97; R = o-Me 1.48; R = m-Me 1.55; R = p-Me 1.58; and R = C17H36 1.00. The min. detectable aldehydes were 0.01 .mu.g. By using a condensing trap, 0.3 ppb of aldehyde could be detected by condensing 30 L of exhaust gas.

Polyolefin resin composition

Polyolefin resin composition. Uchiyama, Hiroshi (E. C. Chemical Industry Co., Ltd.; Itoh, C. and Co., Ltd., Japan). Eur. Pat. Appl. EP 92940 A2 2 Nov 1983, 20 pp. DESIGNATED STATES: R: BE, CH, DE, FR, GB, LI. (English). (European Patent Organization). CODEN: EPXXDW. CLASS: IC: C08L023-02. APPLICATION: EP 83-302107 14 Apr 1983. PRIORITY: JP 82-67169 23 Apr 1982. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) Polyolefin resin compns. having high transparency, low mold shrinkage, and good antistatic characteristics comprise polymers of aliph. monoolefins and 0.05-2% dibenzylidene sorbitol derivs. (I; R, R1 = H, Cl, C1-3 alkyl, C1-3 alkoxy). Thus, a mixt. of p-methylbenzaldehyde [104-87-0] 120, 70% aq. D-sorbitol [50-70-4] 270, and p-toluenesulfonic acid 10 g was stirred at 35° for 45 min to give 1,3-p-methylbenzylidene sorbitol (I) [88449-62-1] (43% yield), to which were added 134 g p-ethylbenzaldehyde [4748-78-1] and 400 g 10% aq. 88449-63-2 and 88449-69-8 which are cas registry numbers of chemicals are mentioned. HCl catalyst. This mixt. was stirred at 25° for 6 h to give 223 g 1,3-p-methylbenzylidene-2,4-p-ethylbenzylidene sorbitol (II) [88449-63-2] (~56% yield). A compn. of 99.7 parts ethylene-propylene copolymer [9010-79-1] and 0.3 part II was injection molded into specimens which had haze 22%, mold shrinkage 7.0%, and static charge decay half-life 550 s, compared to 75%, 16.5%, and 600 s, resp., for the same polymer without II. .