Polypropylene resin composition, and film and sheet using the same
AssigneeIdemitsu Petrochemical Co., Ltd.
InventorsSatoshi Tamura, Yutaka Azuma
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Abstract
Disclosed is a film or sheet of a polypropylene resin composition comprising the following components (A), (B) and (C): (A) 100 parts by weight of a polypropylene resin, (B) from 0.001 to 1 part by weight of a phenolic antioxidant such as 1,3,5-tris(4-t-butyl-3-hydroxy-2,6-dimethylbenzyl)isocyanurate or the like, and (C) from 0.05 to 5 parts by weight of a hindered amine-based light stabilizer. Provided are filmy or sheet moldings of the polypropylene resin composition which color little even when stored indoors at relatively high temperatures; and also the polypropylene resin composition for the moldings.
Claims4
A polypropylene resin composition comprising the following components:
- (A) 100 parts by weight of a polypropylene resin,
- (B) from 0.001 to 1 part by weight of 3,9-bis[1,1-dimethyl-2-[β-(3-t-butyl-4-hydroxy-5-methylphenyl)propionyloxy]ethyl]-2,4,8,10-tetroxaspiro[5,5]undecane, and
- (C) from 0.05 to 5 parts by weight of a hindered amino-based light stabilizer.
A polypropylene resin composition comprising the following components:
- (A) 100 parts by weight of a polypropylene resin,
- (B) from 0.001 to 1 part by weight of a mixed antioxidant that comprises (B1) 3,9-bis[1,1 -dimethyl-2-[β-(3-t-butyl-4-hydroxy-5-methylphenyl)propionyloxy]ethyl]-2,4,8,10-tetroxaspiro[5,5]undecane and (B2) a phosphorus-containing antioxidant selected from tris(2,4-di-t-butylphenyl)phosphate, tetrakis(2,4-di-t-butylphenyl)-4,4′-biphenylene diphosphite, and [bis(2,4-di-tert-butyl-5-methylphenoxy)phosphino]biphenyl in a ratio by weight, (B1) to (B2), of from 19:1 to 1:19, and
- (C) from 0.05 to 5 parts by weight of a hindered amino-based light stabilizer.
Dependencies are inferred from the claim text.