Detail of "1338-23-4"

Curing of unsaturated polyesters at a low temperature: Curing of unsaturated polyesters at a low temperature. Sedova, O. I.; Sedov, L. N. (USSR). Plast. Massy, (1), 38-9 (Russian) 1984. CODEN: PLMSAI. ISSN: 0554-2901. DOCUMENT TYPE: Journal CA Section: 37 (Plastics Manufacture and Processing) Section cross-reference(s): 9 The unsatd. polyesters, adipic acid-diethylene glycol-maleic acid copolymer [26983-31-3] (PNSK-2 and PN-70) and PN-1 [26123-45-5], were cured with styrene at -40 to +20° for use in impregnation and preservation of biol. 13822-09-8 and 89899-58-1 which are cas registry numbers are also used here. tissues. The gelation time of PN-1 and PNSK-2 decreased by a factor of 7 and 10, resp., with decreasing temp. from -20 to -40°. The gel-fraction yield (a) and the crosslinking degree decreased significantly by cooling from 20° to -2° due to a decrease in curing rate. The a of PN-1 was 85 and 62% after 1 mo curing at 20 and -27°, resp., whereas a of PNSK-2 was 68 and 58% due to a lower unsatn. degree of the latter. The a of PN-1 at 40° increased from 30-40 to 86% with increasing curing time from 1 to 30 days, due to an increase in reaction rate at final curing stages. Polyesters PNSK-2, PN-70, PN-1 can be cured at -70° in the presence of MEK peroxide [1338-23-4]-Co naphthenate-dimethylaniline [7440-48-4] catalysts. .

Unsaturated polyester adhesive compositions: Unsaturated polyester adhesive compositions. (Kyushu Sekisui Kogyo Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 59008778 A2 18 Jan 1984 Showa, 3 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C09J003-16; C08F299-00; C08G059-68; C08K003-34; C08K005-14; C08K005-56; C08L063-00; C08L067-06. ICI: C08L063-00, C08L067-00, C08L075-04; C08L067-06, C08L067-00, C08L075-04. APPLICATION: JP 82-118767 6 Jul 1982. DOCUMENT TYPE: Patent CA Section: 38 (Plastics Fabrication and Uses) Adhesive compns. for bonding a thermoplastic product with a metal, or a fiber-reinforced thermosetting resin product giving a composite with high bonding strength under continuous stress or a moist condition comprise an unsatd. polyester or epoxy resin, a satd. polyester resin, a polyurethane resin, Co naphthenate, talc [14807-96-6] and MEK peroxide [1338-23-4] (I). Thus, an adhesive compn. comprising an unsatd. polyester 100, Co naphthenate 0.3, a satd. polyester 30, talc 60, a urethane polymer 80, and I 3 parts was used for bonding a PVC [9002-86-2] sheet and a glass fiber-reinforced plastic sheet, exhibiting adhesive strength 82.1 kg/cm2 after 4 days at 20° (JIS K 6858, 6850), compared with 25.5 kg/cm2 when an adhesive comprising 100% unsatd. polyester resin was used.Except for chemicals metioned above, 7440-48-4 and 7439-89-6 are also used. .