Reference

Photocurable resin compositions for coating glass moldings

Photocurable resin compositions for coating glass moldings. (Hitachi Chemical Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 59140267 A2 11 Aug 1984 Showa, 5 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C09D003-58; C09D005-00. APPLICATION: JP 83-14427 31 Jan 1983. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Section cross-reference(s): 57 The title compns. contain (1) 100 parts epoxy resin having 32 1,2-epoxy groups/mol., (2) 0.5-10 parts RSi(OR1)3 monomer (R = epoxy-contg. group; R1 = lower alkyl), (3) 0.5-15 parts photosensitive arom. onium salt of Group VIA elements. The coated films have excellent hardness, adhesion to glass moldings, heat resistance, water resistance, and chem. resistance. Thus, Epikote 828 [25068-38-6] 880, ethylene glycol diglycidyl ether [2224-15-9] 20,, KBM 403 [2530-83-8] 2, and triphenylsulfonium hexafluoroantimonate [57840-38-7] 6 parts were mixed to prep. a photocurable resin compn., which was coated on a glass plate and cured with a high-pressure Hg lamp. The coated film showed good adhesion and appearance.

Polyester-type block copolymer compositions

Polyester-type block copolymer compositions. (Toyobo Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 59152947 A2 31 Aug 1984 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08L067-00; C08K005-09; C08K005-15. ICI: C08L067-00, C08L063-00. APPLICATION: JP 83-28130 21 Feb 1983. DOCUMENT TYPE: Patent CA Section: 39 (Synthetic Elastomers and Natural Rubber) The compns., having good moldability, heat resistance, and water resistance, comprise a block copolymer obtained by reaction of a cryst. arom. polyester and a lactone, an epoxy compd. having 31 functional group, and a metal salt of an aliph. carboxylic acid. Thus, 70 kg poly(tetramethylene terephthalate) and 30 kg e-caprolactone reacted to give an elastomeric block copolymer [50276-37-4] [reduced viscosity (50 mg/25 mL 6:4 PhOH-C2H2Cl4, 30°) 1.163, acid value 65 equiv/106 g, tensile strength 371 kg/cm2, elongation 708%], which was mixed with 0.8% ethylene glycol diglycidyl ether [2224-15-9] and 0.5 phr NaO2C(CH2)8CO2Na [17265-14-4] and extruded to give moldings having excellent mech. properties.