Reference

Stabilized ethylene-carbon monoxide copolymers

Stabilized ethylene-carbon monoxide copolymers. Russell, Donald Henry; Lenton, Robert Warren (Atlantic Richfield Co., USA). U.S. US 4024104 17 May 1977, 3 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: G08K005-00. NCL: 260045800R. APPLICATION: US 75-587002 13 Jun 1975. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) A carbon monoxide-ethylene copolymer (I) [25052-62-4] (48.6% CO) contg. 10% of a mixt. of 2-(3',5'-di-tert-amyl-2'-hydroxyphenyl)benzotriazole [25973-55-1] and 5-chloro-2-(3',5'-di-tert-butyl-2'-hydroxyphenyl)benzotriazole [3864-99-1] was heated 5 min at 250.degree., and exhibited a light yellow color and no gelling or surface skin formation; without the heat stabilizers, the I had a dark brown color and exhibited gelling and surface skin formation after 1.5 min at 250.degree.. The heat stabilizers could also contain KH2PO4 [7778-77-0].

Metallic finish thermosetting resin coating compositions

Metallic finish thermosetting resin coating compositions. Hirano, Kiminori; Aoyama, Takeshi (Kansai Paint Co., Ltd., Japan). Japan. Kokai JP 52053942 30 Apr 1977 Showa, 7 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: B05D005-06. APPLICATION: JP 75-129659 28 Oct 1975. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Metallic substrates were undercoated with a thermosetting resin coating compn. contg. metallic powders with or without pigments, topcoated with clear thermosetting resins contg. UV absorbers, and heated to give weathering-resistant metallic coatings. Thus, 160 parts of an acrylic resin [63747-55-7] soln. (50% solids) derived from styrene (I) 15, Me methacrylate 15, Bu methacrylate (II) 40, 2-ethylhexyl acrylate 13, hydroxyethyl methacrylate (III) 15, and acrylic acid (IV) 2% in xylene was mixed with a 50% melamine-HCHO resin (V) [9003-08-1] soln. 40, Al pastes 12, an org. yellow pigment 0.01, carbon black 0.005, PhMe 40, petroleum solvent 30, BuOAc 20, and BuOH 10 parts to give an undercoating compn. An acrylic resin [55774-94-2] soln. (50% solids, 140 parts) derived from I 30, II 30, 2-ethylhexyl methacrylate 23, III 15, and IV 2% in xylene was mixed with a 60% V soln. 50, a PhMe soln. contg. 10% 2-(2-hydroxy-3,5-di-tert-pentylphenyl)benzotriazole [25973-55-1] 10, petroleum solvent 90, and BuOH 10 parts to give a clear topcoating compn. A primer-coated steel panel was sprayed with the undercoating compn., dried at room temp., sprayed with the topcoating compn., and heated 30 min at 140.degree. to give a glossy, smooth coating.