Claims
- 1. A process for the production of solid purple titanium trichloride suitable for use as a catalyst for polymerization of an alpha-olefin, which comprises:
- mixing solid titanium trichloride, an ether and a hydrocarbon solvent selected from the group consisting of aliphatic, alicyclic and aromatic hydrocarbon solvents for reaction to form a homogeneous solution or mixture comprising titanium trichloride, said ether having the generic formula R.sup.1 --O--R.sup.2, wherein R.sup.1 and R.sup.2 are individually an alkyl or alkenyl group having at least six carbon atoms, and said ether is added in an amount so the molar ratio of ether to titanium trichloride is greater than 1;
- mixing said homogeneous solution or mixture and a Lewis acid to form a second mixture, said Lewis acid having higher acidity than titanium trichloride;
- heating said second mixture to a temperature within the range of 20.degree.-150.degree. C to form a purple precipitate of titanium trichloride; and
- separating said precipitate.
- 2. A process for the production of solid purple titanium trichloride suitable as a catalyst for polymerization of an alpha-olefin, which comprises:
- mixing said titanium trichloride, an ether and a hydrocarbon solvent selected from the group consisting of alicyclic and aromatic hydrocarbon solvents for reaction to form a homogeneous solution or mixture comprising titanium trichloride said ether having the generic formula, R.sup.1 --O--R.sup.2, wherein R.sup.1 and R.sup.2 are individually an alkyl or alkenyl group and wherein at least one of R.sup.1 and R.sup.2 is an alkyl or alkenyl group having five or less carbon atoms, and said ether is added in an amount so that the molar ratio of ether to titanium trichloride is greater than 1;
- mixing said homogeneous solution or mixture and a Lewis acid to form a second mixture, said Lewis acid having higher acidity than titanium trichloride;
- heating said second mixture to a temperature within the range of 20.degree.-150.degree. C to form a purple precipitate of titanium trichloride; and
- separating said precipitate.
Priority Claims (2)
Number |
Date |
Country |
Kind |
49/88476 |
Jul 1974 |
JPX |
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49/88477 |
Jul 1974 |
JPX |
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Parent Case Info
This is a division of application Ser. No. 600,819, filed July 31, 1975, U.S. Pat. No. 4,060,593, which in turn is a continuation-in-part of Ser. No. 598,425, filed July 23, 1975, and now abandoned.
US Referenced Citations (6)
Foreign Referenced Citations (2)
Number |
Date |
Country |
721,245 |
Feb 1973 |
ZAX |
960,232 |
Jun 1964 |
GBX |
Divisions (1)
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Number |
Date |
Country |
Parent |
600819 |
Jul 1975 |
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Continuation in Parts (1)
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Number |
Date |
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598425 |
Jul 1975 |
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