Reference

Photochemical degradation and biological defacement of polymers - I

Photochemical degradation and biological defacement of polymers - I. Gabriele, P. D.; Geib, J. R.; Puglisi, J. S.; Reid, W. J. (Addit. Dep., CIBA-GEIGY Corp., Ardsley, NY 10502, USA). Polym. Sci. Technol. (Plenum), 26(Polym. Addit.), 61-70 (English) 1984. CODEN: POSTB5. ISSN: 0093-6286. DOCUMENT TYPE: Journal CA Section: 37 (Plastics Manufacture and Processing) Addn. of bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate (LS-1)(I) [52829-07-9] or 2-(2-hydroxy-5-methylphenyl)benzotriazole (LS-2)(II) [2440-22-4] stabilized polymer surfaces for many years during outdoor exposure. This surface integrity reduced the potential for dirt pickup and mildew organism's ability for establishing a habitat. Thus, an acrylonitrile-styrene-satd. rubber terpolymer stabilized with 0.5% I and 0.5% II retained its color, surface integrity, and impact property after 500 kilolangleys (4 yr) exposure in Miami, Florida. On the other hand, the unstabilized materials were readily attacked by mildew. Profax 6501 [25085-53-4] and thermoplastic polyurethane films also kept their surfaces intact and free from mildew attack in the presence of I.

Light-resistant synthetic fiber manufacture

Light-resistant synthetic fiber manufacture. (Toyobo Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 59192724 A2 1 Nov 1984 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: D01F011-04; D06M013-38. APPLICATION: JP 83-67278 16 Apr 1983. DOCUMENT TYPE: Patent CA Section: 40 (Textiles) Melt-spun fibers from a thermoplastic synthetic resin are coated with aq. dispersions of a benzotriazole-compd. UV absorber and then drawn to give fibers having excellent resistance to light. Benzotriazole compds. are I (R = H, halogen; R1, R2 = H, C1-5 alkyl, alkoxy). Thus, a mixt. of poly(ethylene terephthalate) contg. Polysynthern Yellow GG was melt-spun, and coated with a lubricant compn. contg. an aq. dispersion of 2-(2-hydroxy-5-methylphenyl)benzotriazole [2440-22-4] drawn, dried, and crimped to give fibers with good light resistance.