Detail of "15845-66-6"

Reference

Thermosetting curing compositions

Thermosetting curing compositions. Fujimoto, Hiroshi; Suzuki, Hajime; Miyake, Hideo (Toyobo Co., Ltd., Japan). Japan. Kokai JP 52148582 9 Dec 1977 Showa, 9 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08F004-40. APPLICATION: JP 76-66928 7 Jun 1976. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) Radical-curable thermosets contained peroxy compds. and P(ZR)(ZR1)(ZR2) (Z = direct bond, S, O; R,R1,R2 = C1-20 hydrocarbon residue). For example, styrene 641, bis(2,2-dimethyl-3-hydroxypropyl) phthalate 888, phenothiazine 0.16, and hydroquinone 0.08 part at 50° were treated with 848 parts 2,4-TDI at <80° for 1 h to give NCO-terminated urethane prepolymer which was treated with 286 parts 2-hydroxyethyl methacrylate at <80° for 1.5 h to give a resin having viscosity 5.5 P. The resin contg. 0.2 phr Et phosphite (I) [15845-66-6] and 1 phr 50% tert-Bu peroctanoate, cured at 80° had gel time 14.5 min, curing time 16.3 min, and max. exotherm 227°, compared with 21.8, 24.2, and 22.3, resp., for a control not contg. I.