Detail of "6652-28-4"

Reference

Method for making a matrix suitable for preparing a duplicate thermoplastic plate

Method for making a matrix suitable for preparing a duplicate thermoplastic plate. Takimoto, Yasuyuki; Yoshikawa, Toshikazu (Nippon Paint Co., Ltd., Japan). Brit. GB 1481212 27 Jul 1977, 8 pp. (English). (United Kingdom). CODEN: BRXXAA. CLASS: IC: B29C015-00. PRIORITY: JP 73-39941 6 Apr 1973. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Fabrication and Uses) Section cross-reference(s): 74 Lightwt. lead-free photodegradable surface-texturizing matrixes for the manuf. of duplicate thermoplastic plates were manufd. from UV light-crosslinked syndiotactic 1,2-polybutadiene [31567-90-5] extruded sheet. Thus, 100 parts syndiotactic 1,2-polybutadiene was mixed with 3 parts benzoin iso-Pr ether [6652-28-4] at 120° and the mixt. was molded 30 s in a hydraulic press at 120° and 10 kg/cm2 to give a 2.00-mm-thick sheet. A 1-mm-thick photopolymer plate with a relief depth of 0.7 mm was placed with a sheet of the matrix 10 s between Fe plates at 120° and 10 kg/cm2. The matrix was sepd. from the photopolymer and exposed 2 min 70 cm from a Hg lamp and a hardened 1.7-mm-thick relief plate was obtained. The plate was used for prepg. precast concrete panels having a relief pattern.

Photocurable epoxy resins for electric insulators

Photocurable epoxy resins for electric insulators. Kume, Nobuyuki; Sugiura, Noriyuki (Matsushita Electric Industrial Co., Ltd., Japan). Japan. Kokai JP 52110751 17 Sep 1977 Showa, 3 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08J003-24. APPLICATION: JP 76-28389 15 Mar 1976. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Fabrication and Uses) An epoxy resin is mixed with benzoin iso-Pr ether (I) [6652-28-4] and ￡50% (based on I) dicumyl peroxide (II) [80-43-3] to give a photocurable resin useful as elec. insulator. Thus, a mixt. Ripoxy 100, I 1.0, and II 0.1 part was photoirradiated 60 s and allowed to stand 10 min at 120°. A film condenser wrapped with the resulting resin was conditioned at 85° and 95-100% relative humidity to give a condensor with improved insulating properties.