Detail of "37353-75-6"

Reference

Low viscosity epoxy resins

Low viscosity epoxy resins. Bowditch, W. Raymond (Wilmington Chemical Corp., USA). U.S. US 4507461 A 26 Mar 1985, 5 pp. (English). (United States of America). CODEN: USXXAM. CLASS: ICM: C08G059-02. ICS: C08G059-24. NCL: 528104000. APPLICATION: US 83-541954 14 Oct 1983. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Section cross-reference(s): 37 The epoxides Z[(OCH2CHR1)aOR2]b (Z = arylene; R1 = Me, H, or Et, a = 1 or 2; b 3 2, R2 = glycidyl) and their reaction products with polyphenols are useful as coatings, moldings, and reactive diluents, and in lowering the viscosity of epoxy resins without impairment of final properties. Thus, adding 180 g epichlorohydrin (I) [106-89-8] over 4 h to oxypropylated bisphenol A [37353-75-6] (2.2:1), 800 g PhMe, and 4 g BF3×Et2O stirred at 75°C, adding 33 g I, stirring 1 h at 75°C, cooling to 65°, and adding 25% NaOH gave a diglycidyl ether [55236-42-5] with epoxy equiv. wt. 335 and viscosity 4300 cP. Heating this ether with bisphenol A (II) and 0.05% 2-methylimidazole at 150-190°C for 6 h gave a resin [60318-71-0] with epoxy equiv. wt. 450-6000 and viscosity 93,000 cP or B-I [Gardner-Holdt with 40% Bu(OCH2CH2)2OH soln.], depending on the amt. of II used. A mixt. of this resin (epoxy equiv. wt. 2000-2500, Gardner-Holt viscosity F) 736.8, aminoplast (Resimene 747) 200.2, siloxane (DC 840) 29.6, TiO2 388.6, xylene 657.4, EtOCH2CH2OAc 405, and BuOH 202.5 g contg. 1.55% blocked acid catalyst (Zahn-2 and -4 viscosity 27 and 75) was coated on steel and baked 15 min at 306 °F to give a coating with crosshatch adhesion 5, forward and reverse impact 86 and 32 in.-lb, resp., and Sward hardness 51.

Polyurethane adhesive compositions

Polyurethane adhesive compositions. (Sekisui Chemical Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 59105069 A2 18 Jun 1984 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C09J003-16. APPLICATION: JP 82-216021 9 Dec 1982. DOCUMENT TYPE: Patent CA Section: 38 (Plastics Fabrication and Uses) Title compns. useful for pressure-sensitive tapes, sheets, and labels contain (A) aliph. polyol compds. (mol. wt. 500-5000, having 1.7-2.5 terminal OH groups), (B) hydroxy compds. (mol. wt. 150-800, having arom. rings and 2 secondary OH groups), (C) polyisocyanates, and (D) arom. or arom.-aliph. copolymeric petroleum resins (inert to NCO groups) at a 1-10 equiv ratio of OH groups in B to that in A and 1.0-1.4 equiv ratio of NCO groups in C to the total OH groups in A and B. Thus, to 100 parts OH-terminated polybutadiene (2800, 2.3 OH groups) were added 100 parts FTR 6100 petroleum resin (softening point 10°) and 41 parts bisphenol A-propylene glycol copolymer [37353-75-6] (OH equiv ratio of B/A 1.5); the compn. was throughly mixed; 188 parts polyisocyanate (mol. wt. 1700) and 0.5% Bu2Sn dilaurate (on total wt. of compn.) were added; and the compn. was mixed uniformly to prep. a self-adhesive compn. (NCO/OH 1.1), which was coated (25 m) on a 100 m thick poly(ethylene terephthalate) films and heated 90 s at 110° to obtain an adhesive tape.