Reference

Use of gas-liquid chromatography for determining water in solid specimens

Use of gas-liquid chromatography for determining water in solid specimens. Tsuman, E. P.; Levites, L. M.; Artamasova, N. P.; Kudryavtsev, G. I. (USSR). Metody Anal. Kontrolya Kach. Prod. Khim. Prom-sti., (3), 3-5 (Russian) 1978. CODEN: MKKPDU. DOCUMENT TYPE: Journal CA Section: 39 (Textiles) The moisture content of arom. diamines, for prepn. of polyamide fibers, was detd. by a rapid gas-chromatog. method based on an increase in moisture content of abs. MeOH on dissoln. of the diamine and detn. of the H2O in MeOH. The anal. time was 4 min, and the relative error of H2O detn. in MeOH was ￡ 5%. Moisture contents of 4,4'-diaminobenzophenone [611-98-3], 4,4'-thiodianiline [139-65-1], 4,4'-oxydianiline [101-80-4], p- [106-50-3] and m-phenylenediamine [108-45-2] were detd. by the gas-chromatog. and std. Fischer methods and the results agreed well.

Photopolymerization initiator

Photopolymerization initiator. (Daicel Chemical Industries, Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 60004502 A2 11 Jan 1985 Showa, 5 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: ICM: C08F002-50. ICS: G03C001-68. APPLICATION: JP 83-112437 22 Jun 1983. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) An initiator for photopolymn. of acrylic monomers comprising p-aminophenyl ketone (I) [611-98-3] and R3CO2N:CRR2 (II) where R1, R2 = alkyl, Ph, substituted Ph, naphthyl, anthryl, pyridiyl, quinolyl, or a cyclic deriv.; R3 = alkyl, Ph or substituted Ph) gives a resin compn. which hardens only in the irradiated part and exhibits excellent adhesion to a base material. The preferred I-II ratio is 1:50-1:2 and the preferred ratio of the initiator to the photopolymerizable compn. is 1:100-. In an example, Me methacrylate-tetraethylene glycol diacrylate-trimethylolpropane triacrylate copolymer [70799-55-2] is prepd. using I and benzophenone-O-acetyl oxime [21160-02-1] initiator.