| 摘要 |
A POLYOLEFINIC RESIN WHICH IS A HOMOPOLYMER OF AN OLEFIN OR A COPOLYMER OF OLEFINS, HAS (I) INTRINSIC VISCOSITY [ ] MEASURED IN DECALINE AT THE TEMPERATURE OF 135°C IN THE RANGE OF 0.5 TO 10 DECILITER/G AND (II) CONTENT OF INSOLUBLE FRACTION IN BOILING N-HEPTANE (W) IN THE RANGE OF 10 TO 99 WEIGHT AND SHOWS (III) RELATION BETWEEN RELAXATION TIME OF RUBBER COMPONENT MEASURED BY PULSE NMR AT THE TEMPERATURE OF 30°C [ T2HR (30): µS], RELAXATION TIME OF RUBBER COMPONENT MEASURED BY PULSE NMR AT THE TEMPERATURE OF 80°C [T2HR(80): µS] AND THE CONTENT OF INSOLUBLE FRACTION IN BOILING N-HEPTANE(W) SATISFYING THE FOLLOWING EQUATIONS:@T2HR (80) <670 -2.2 XW@T2HR (80) /T2HR (30) <8.8 + 0.086 XW@AND A PROPYLENIC RESIN COMPOSITION COMPRISING (A) 10 TO 95 WEIGHT OF THE POLYOLEFINIC RESIN, PARTICULARLY A PROPYLENIC RESIN WHICH IS AT LEAST ONE KIND SELECTED FROM A HOMOPOLYMER OF PROPYLENE AND COPOLYMERS OF PROPYLENE CONTAINING 4 MOL OR LESS OF OTHER OLEFINIC UNITS, AND (B) 90 TO 5 WEIGHT OF A PROPYLENIC RANDOM COPOLYMER HAVING INTRINSIC VISCOSITY [ ] MEASURED IN DECALINE AT THE TEMPERATURE OF 135°C IN THE RANGE OF 0.5 TO 10 DECILITER/G AND CONTAINING 10 TO 80 MOL OF OLEFINIC UNITS OTHER THAN THE PROPYLENIC UNIT ARE DISCLOSED. THE POLYOLEFINIC RESIN AND THE COMPOSITION HAVE HIGH HEAT RESISTANCE AND EXCELLENT MECHANICAL PROPERTIES IN A WIDE RANGE OF MODULUS, SHOW SMALL TEMPERATURE DEPENDENCE OF THE MECHANICAL PROPERTIES AND DO NOT CAUSE STICKINESS ON THE SURFACE OF MOLDED ARTICLES.
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