Reference

Durable thermoplastic acrylic resin films

Durable thermoplastic acrylic resin films. (Kanegafuchi Chemical Industry Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 59078252 A2 7 May 1984 Showa, 8 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C08L033-04; C08K005-34. APPLICATION: JP 82-189729 27 Oct 1982. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Manufacture and Processing) Compns. contg. a light stabilizer I, where R1 is H or C1-6 alkyl and R is H or Cl, and a thermoplastic acrylic polymer contg. a crosslinkable elastic segment, a C1-8 alkyl acrylate unit, and a C1-4 alkyl methacrylate unit are useful for manuf. of impact-resistant films with good weatherability and resistance to heat. Thus, 90 parts Bu acrylate (II) was copolymd. with 10 parts Me methacrylate (III) and 0.5 part triallyl cyanurate to give an elastic crosslinkable polymer which was copolymd. with 50 parts II and 50 parts III to give a resin (IV) [53192-25-9]. A compn. contg. IV and 1% 2-[2-hydroxy-3,5-bis(a,a-dimethylbenzyl)phenyl]benzotriazole [70321-86-7] was inflation-molded to give an impact-resistant film with good weatherability and good heat resistance.

Improving the weather resistance of automobile exterior paints by light stabilizers

Improving the weather resistance of automobile exterior paints by light stabilizers. Rembold, M.; Berner, G. (Ciba Geigy A.-G., Basel 4002, Switz.). Oberflaeche-Surf., 26(2), 40-4 (German) 1985. CODEN: OBSUA7. ISSN: 0048-1270. DOCUMENT TYPE: Journal CA Section: 42 (Coatings, Inks, and Related Products) The effect of light stabilizers, i.e. 2-(benzotriazol-2-yl)-4,6-bis(phenylisopropyl)phenol (I) [70321-86-7], 2,4-dihydroxybenzophenone (II) [131-56-6], 4-(dodecyloxy)-2-hydroxybenzophenone (III) [2985-59-3], N-(2-ethoxyphenyl)-N'-(2-ethylphenyl)oxamide (IV) [23949-66-8], and octyl 2-cyano-3,3-diphenylacrylate [73529-13-2], on the weather resistance of metal-effect coatings is discussed. With the exception of II and III, all volatility losses correlated well with vapor pressure of stabilizers when coatings were stored 10 day at 100°. Losses of UV absorbance for II, III, and IV in weathering were high, while I showed little spectral change. Stabilization was optimum with bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate [52829-07-9] and I.