Claims
- 1. A propylenic resin composition comprising (A) 10 to 95 weight % of at least one kind selected from the group consisting of a homopolymer of propylene and copolymers of propylene containing 4 mol % or less of other olefinic units having (i) intrinsic viscosity [.eta.] measured in decaline at the temperature of 135.degree. 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 showing (iii) relation between relaxation time of rubber component measured by pulse NMR at the temperature of 30.degree. C. [T.sub.2H.sup.R (30): .mu.s], relaxation time of rubber component measured by pulse MNR at the temperature of 80.degree. C. [T.sub.2H.sup.R (80): .mu.s] and the content of insoluble fraction in boiling n-heptane (W) satisfying the following equations:
- T.sub.2h.sup.R (80).ltoreq.670-2.2.times.W
- T.sub.2H.sup.R (80)/T.sub.2H.sup.R (30).ltoreq.8.8+0.086.times.W,
- and (B) 90 to 5 weight % of a propylenic random copolymer having intrinsic viscosity [.eta.] measured in decaline at the temperature of 135.degree. 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,
- wherein the homopolymer of propylene and the copolymers of propylene are obtained by homopolymerization or copolymerization of propylene in the presence of a catalyst system comprising (a) a solid component consisting essentially of magnesium, titanium, silicon, a halogen atom or a compound comprising a halogen and dialkyl phthalate, (b) triisobutylaluminum, (c) an aromatic compound containing alkoxy group represented by the following general formula (I): ##STR3## wherein R.sup.1 is an alkyl group having 1 to 20 carbon atoms, R.sup.2 is a hydrocarbon group having 1 to 10 carbon atoms, a hydroxyl group or a nitro group, m is an integer of 1 to 6 and n is an integer of 0 to 6 (6-m) and (d) an organosilicon compound.
- 2. A propylenic resin composition as claimed in claim 1, wherein the propylenic random copolymer (B) contains 10 to 70 mol % of olefinic units other than the propylenic unit.
- 3. A propylenic resin composition as claimed in claim 1, wherein the intrinsic viscosity [.eta.] of (A) is in the range of 1.0 to 9.0 deciliter/g.
- 4. A propylenic resin composition as claimed in claim 1, wherein the content of insoluble fraction in boiling n-heptane (W) is in the range of 20 to 99 weight %.
- 5. A propylenic resin composition as claimed in claim 1, wherein the propylenic resin composition comprises (A) 30 to 95 weight % of at least one kind selected from the group consisting of the homopolymer of propylene and the copolymers of propylene containing 4 mol % or less of other olefinic units.
- 6. A propylenic resin composition as claimed in claim 1, wherein the propylenic resin composition comprises 70 to 5 weight % of (B) the propylenic random copolymer.
- 7. A propylenic resin composition as claimed in claim 1, wherein the homopolymer of propylene and the copolymers of propylene are obtained by homopolymerization or copolymerization of propylene in the presence of a catalyst system comprising (a) a solid component consisting essentially of magnesium, titanium, silicon, an iodine atom and diethyl phthalate, (b) triisobutylaluminum, (c) an aromatic compound containing alkoxy group represented by the following general formula (I): ##STR4## wherein R.sup.1 is an alkyl group having 1 to 20 carbon atoms, R.sup.2 is a hydrocarbon group having 1 to 10 carbon atoms, a hydroxyl group or a nitro group, m is an integer of 1 to 6 and n is an integer of 0 to (6-m) and (d) diphenyldimethoxysilane.
Priority Claims (2)
Number |
Date |
Country |
Kind |
4-345640 |
Dec 1992 |
JPX |
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4-345641 |
Dec 1992 |
JPX |
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Parent Case Info
This application is a Division of application Ser. No. 08/755,151, filed on Nov. 25, 1996, now U.S. Pat. No. 5,777,056 which is a continuation of application Ser. No. 08/632,130, filed on Apr. 15, 1996, abandoned, which is a continuation of application Ser. No. 08/536,678, filed on Sep. 29, 1995, abandoned, which is a continuation of application Ser. No. 08/387,379, filed on Feb. 13, 1995, abandoned, which is a continuation of application Ser. No. 08/171,159, filed on Dec. 22, 1993, abandoned.
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Divisions (1)
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Number |
Date |
Country |
Parent |
755151 |
Nov 1996 |
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Continuations (4)
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Number |
Date |
Country |
Parent |
632130 |
Apr 1996 |
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Parent |
536678 |
Sep 1995 |
|
Parent |
387379 |
Feb 1995 |
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Parent |
171159 |
Dec 1993 |
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