Polyolefin compositions for use with water systems
Номер патента: CA1311072C
Опубликовано: 01-12-1992
Автор(ы): Earl Enright Hayden
Принадлежит: Shell Oil Co
Опубликовано: 01-12-1992
Автор(ы): Earl Enright Hayden
Принадлежит: Shell Oil Co
Реферат: T-4006 (US) DB/WKBB:knl ABSTRACT OF THE DISCLOSURE An improved polyolefin composition having improved resistance to deterioration in the presence of chlorinated and nonchlorinated water and having improved resistance to temperatures in the range of about 0°C to about 110°C consisting of a blend of: (a) about 93 to about 99.5 percent by weight of an isotactic alpha olefin polymer having 2-6 carbon atoms; (b) about 0.05 to about 0.50 percent by weight of a hindered amine U.V. stabilizer; (c) about 0.05 to about 1.1 by weight of a hindered phenolic thermal stabilizer having a molecular weight above 530 and selected from the group consisting of: 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxy-benzy-l) benzene, octadecyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate, tetrakis-[methylene(3,5-di-tert-butyl-4-hydroxy-hydro-cinnamate)]methane, 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethylbenzyl)-1,3,5-triazine-2,4,6-(1H,3H,5H)-trione, bis-[3,3-bis(4'hydroxy-3'tert.butyl-phenyl)-butanoic acid]-glycolester, tris(3,5-di-t-butyl-4-hydroxybenzyl)isocyanurate and mixtures thereof; (d) about zero to about 0.5 percent by weight of a nucleating agent; (e) about zero to about 4 percent by weight of a pigment; and (f) about zero to about 3.0 percent by weight of a filler.
Polyolefin compositions for use with water systems
Номер патента: US4746692A. Автор: Earl E. Hayden. Владелец: Shell Oil Co. Дата публикации: 1988-05-24.