F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
400/6580, 400/94
F16L 9/00 (2006.01)
Patent
CA 1239243
ABSTRACT OF THE DISCLOSURE The invention provides a cold or hot water supplying pipe capable of supplying cold or hot water containing sterilizing chlorine dissolved therein, said pipe being composed of a resin composition comprising a poly-1-butene polymer and at least one hindered phenol selected from the group consisting of (a) 3,5-di-tert-butyl-4-hydroxybenzoates of the following formula Image wherein R represents an alkyl group having 1 to 18 carbon atoms or an aryl group having 6 to 18 carbon atoms; (b) 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4- hydroxybenzyl)benzene; (c) 1,3,5-tris(4-tert-butyl-3-hydroxy-2,6-dimethyl- benzyl)isocyanurate; (d) tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate; (e) n-octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)- propionate; (f) a nickel salt of a monoethyl ester of bis(3,5-di- tert-butyl-4-hydroxybenzylphosphonic acid), (g) 2,2'-dihydroxy-3,3'-di(.alpha.-methylcyclohexyl)-5,5'-di- methyl-diphenylmethane, (h) 4,4'-thiobis(3-methyl-6-tert-butyl-phenol); (i) 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butyl-phenyl)- butane; (j) tetrakis(methylene-3-(3,5-di-tert-butyl-4-hydroxy- phenyl)propionate)methane; and (k) 4,4'-methylene-bis(2,6-di-tert-butyl-phenol) in an amount effective to provide said polymer with resistance to chemical degradation from the effects of said sterilizing chlorine.
427725
Hashimoto Takashi
Igarashi Chikara
Mitsui Chemicals Incorporated
Smart & Biggar
LandOfFree
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