Claims
- 1. A method for preparing a highly crystalline olefin polymer, which comprises polymerizing at least one olefin in the presence of a catalyst system consisting essentially of:
- (A) the solid titanium trichloride catalyst obtained by treating at about -30.degree. to about 200.degree. C. for about 5 minutes to about 5 hours a titanium trichloride composition or a pulverized product thereof with a mixture of
- (1) about 0.001 to about 2.0 moles per mole of titanium chloride in the titanium trichloride composition of at least one halogen or halogen compound selected from the group consisting of (a) a halogen expressed by the general formula
- X.sub.2
- wherein X represents Cl, Br or I, (b) an interhalogen compound expressed by the general formula
- XX'a
- wherein X and X', which are different, each represents Cl, Br or I, and a is 1 or 3, and (c) an iodinated hydrocarbon compound expressed by the general formula
- R.sub.3 --I
- wherein R.sub.3 represents a straight-chain or branched-chain alkyl group containing 2 to 18 carbon atoms, and
- (2) about 0.001 to about 5.0 moles per mole of titanium trichloride in the titanium trichloride composition of an ether compound expressed by the general formula
- R.sub.1 --O--R.sub.2
- wherein R.sub.1 and R.sub.2, which may be the same or different, each represents a straight-chain or branched-chain alkyl group containing 1 to 8 carbon atoms; and
- (B) an activator expressed by the general formula
- R'.sub.e AlY.sub.3-e
- wherein R' represents a straight-chain or branched-chain alkyl group containing 1 to 8 carbon atoms, Y represents a halogen atom, a hydrogen atom or an alkoxy group, and e is a number of from 2 to 3.
- 2. The method of claim 1, wherein the activator is diethyl aluminum chloride.
Priority Claims (2)
Number |
Date |
Country |
Kind |
51-108276 |
Sep 1976 |
JPX |
|
51-127705 |
Oct 1976 |
JPX |
|
Parent Case Info
This is a division of application Ser. No. 831,630, filed Sept. 8, 1977, U.S. Pat. No. 4,165,298.
US Referenced Citations (8)
Non-Patent Literature Citations (2)
Entry |
Yamaguchi et al., Jap. Pub. App. No. Sho. 50-112,289, published 9-3-75. |
Yamaguchi et al., Jap. Pub. App. No. Sho. 50-143,790, published 11-9-75. |
Divisions (1)
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Number |
Date |
Country |
Parent |
831630 |
Sep 1977 |
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