摘要:
A polypropylene resin composition is herein disclosed which is obtainable by blending (A) 100 parts by weight of a polypropylene resin comprising (a) 100 to 20% by weight of a homopolymer of propylene and/or a propylene copolymer containing 4% by weight or less of another olefin unit in which in a pentad fraction by .sup.13 C-NMR, �rrrr/(1-mmmm)!.times.100 is in the range of 20 to 60%, a Tm measured by a DSC is 150.degree. C. or more, and a melt enthalpy is 100 J/g or less, and (b) 0 to 80% by weight of a propylene copolymer containing 10 to 80% by weight of an olefin unit other than propylene, with (B) 0.01 to 5 parts by weight of an octyltin salt of a fatty acid, an alkylenebisfatty acid amide, a fatty acid ester of a polyvalent alcohol, or a metal salt of an aliphatic monocarboxylic acid.The employment of this polypropylene resin composition permits, under a good moldability by the calender molding machine, the manufacture of films and sheets having less thickness unevenness, excellent appearance and heat resistance and such flexibility as in molded articles of a plastic polyvinyl chloride.
摘要:
A polypropylene resin composition is herein disclosed which is obtainable by blending (A) 100 parts by weight of a polypropylene resin comprising (a) 100 to 20% by weight of a homopolymer of propylene and/or a propylene copolymer containing 4% by weight or less of another olefin unit in which in a pentad fraction by .sup.13 C-NMR, [rrrr/(1-mmmm)].times.100 is in the range of 20 to 60%, a Tm measured by a DSC is 150.degree. C. or more, and a melt enthalpy is 100 J/g or less, and (b) 0 to 80% by weight of a propylene copolymer containing 10 to 80% by weight of an olefin unit other than propylene, with (B.) 0.01 to 5 parts by weight of an octyltin salt of a fatty acid, an alkylenebisfatty acid amide, a fatty acid ester of a polyvalent alcohol, or a metal salt of an aliphatic monocarboxylic acid.The employment of this polypropylene resin composition permits, under a good moldability by the calender molding machine, the manufacture of films and sheets having less thickness unevenness, excellent appearance and heat resistance and such flexibility as in molded articles of a plastic polyvinyl chloride.
摘要:
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.
摘要:
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.
摘要:
(1) Provided is a flexible polypropylene resin composition comprising 100 parts by weight of a flexible polypropylene resin having (a) a peak melting temperature of 150.degree. C. or above as measured through differential scanning calorimetry and (b) a tensile modulus of elasticity of from 200 to 700 MPa, and from 0.05 to 5 parts by weight of a hindered amine light stabilizer. The flexible polypropylene resin preferably comprises (A) from 20 to 100% by weight of a propylene homopolymer having (c) a pentad fraction, rrrr/(1-mmmm).times.100, as measured through isotopic carbon nuclear magnetic resonance spectrometry (.sup.13 C-NMR) of from 20 to 60%, and (d) a melting enthalpy as measured through differential scanning calorimetry of from 10 to 100 J/g, and/or a propylene copolymer containing at most 4% by weight of other olefin units and having the physical data of (c) and (d), and (B) from 0 to 80% by weight of a propylene copolymer containing from 10 to 80% by weight of non-propylene olefin units.(2) The flexible polypropylene resin composition (1) may contain from 0.05 to 5 parts by weight, relative to 100 parts by weight of the flexible polypropylene resin, of a benzotriazole ultraviolet absorbent.(3) Also provided is a film or sheet of the resin composition of (1) or (2).
摘要:
A storage medium stores map data divided into unit areas. A control circuit indicates a map on an image display unit according to the map data. The map data includes name records, which respectively correspond to names to be indicated in the map. Each of the name records includes information specifying a character string of corresponding one of the names and information specifying an indication range of the character string in the map. An updating unit updates a part of the unit areas of the map data. An extracting unit extracts a pair of the same character strings, which are overlapped and indicated in the map or closely indicated in the map, with reference to the name records, after update of the part of the unit areas of the map data. A prohibiting unit prohibits indication of one of the extracted pair in the map.
摘要:
A storage medium stores map data divided into unit areas. A control circuit indicates a map on an image display unit according to the map data. The map data includes name records, which respectively correspond to names to be indicated in the map. Each of the name records includes information specifying a character string of corresponding one of the names and information specifying an indication range of the character string in the map. An updating unit updates a part of the unit areas of the map data. An extracting unit extracts a pair of the same character strings, which are overlapped and indicated in the map or closely indicated in the map, with reference to the name records, after update of the part of the unit areas of the map data. A prohibiting unit prohibits indication of one of the extracted pair in the map.
摘要:
The object of the present invention is to provide a polyethylene resin composition which is improved in anti-blocking and slipping properties, and further in antistatic properties without deteriorating the excellent properties of polyethylene, such as transparency and heat sealability.The inventive polyethylene resin composition comprises(A) polyethylene,(B) a zeolite or an anhydrous amorphous aluminosilicate having the basic particle characteristics of zeolite as prepared by acid-treating zeolite,(C) fatty acid amide having a melting point of not more than 130.degree. C., and(D) an antistatic agent.