Claims
- 1. A process for producing a propylene polymer or copolymer which comprises polymerizing (a) propylene or (b) a mixture of propylene and another unsaturated hydrocarbon monomer in liquid propylene in the presence of a catalyst system of
- (A) a titanium trichloride composition;
- (B) an organoaluminum compound having the general formula:
- R.sub.2 AlX
- wherein R represents an alkyl group or an aralkyl group, each containing up to 18 carbon atoms, and X represents a halogen atom; and
- (C) an unsaturated carboxylic acid ester selected from the group consisting of methyl acrylate, methyl methacrylate, methyl maleate, methyl itaconate, ethyl acrylate, butyl acrylate and butyl methacrylate;
- while adjusting the amount of the polymer produced to at least 8,000 g per gram of the titanium trichloride composition, wherein the molar ratios of unsaturated carboxylic acid ester (C) and organoaluminum compound (B) to titanium trichloride composition (A) are 0.01-2:1 and 1-100:1, respectively, and the titanium trichloride composition (A) is a composition obtained by reducing titanium tetrachloride with an organoaluminum compound of the general formula:
- R'.sub.n AlX'.sub.3-n
- wherein R' represents a straight chain or branched chain alkyl group, an alicyclic hydrocarbon group or an aromatic hydrocarbon group, each containing up to 18 carbon atoms, X' represents a halogen atom or a hydrogen atom, and n is a number of 1.ltoreq.n.ltoreq.3, at a temperature of about -100.degree. C. to about 60.degree. C.; treating the resulting solid reduction product with an ether in an amount of about 0.05 to 3 times by mole based on the titanium trichloride contained in the solid product at a temperature of about 0.degree. to 100.degree. C.; contacting the resulting ether-treated solid with an aluminum compound having the general formula:
- R".sub.p AlX.sub.3-p
- wherein R" represents a straight chain or branched chain alkyl group, an alicyclic hydrocarbon group or an aromatic hydrocarbon group, each containing up to 18 carbon atoms, X represents a halogen atom, and p is a number of 1.ltoreq.p<1.5 in an amount of about 0.1 to 10 times by mole based on the titanium trichloride contained in the ether-treated solid at about room temperature to about 200.degree. C.; and thereafter contacting the aluminum compound-treated solid with a mixture of a halogenated hydrocarbon of the general formula:
- CH.sub.q X.sub.4-q
- wherein X is a halogen atom and q is an integer satisfying the relationship 0.ltoreq.q<4; and an ether in amounts of 0.001 to 1.0 and 0.001 to 5 times by mole based on the titanium trichloride contained in the aluminum compound-treated solid, respectively.
- 2. A process for producing a propylene polymer or copolymer which comprises polymerizing (a) propylene or (b) a mixture of propylene and another unsaturated hydrocarbon monomer in liquid propylene in the presence of a catalyst system of
- (A) a titanium trichloride composition;
- (B) an organoaluminum compound having the general formula:
- R.sub.2 AlX
- wherein R represents an alkyl group or an aralkyl group, each containing up to 18 carbon atoms, and X represents a halogen atom; and
- (C) an unsaturated carboxylic acid ester selected from the group consisting of methyl acrylate, methyl methacrylate, methyl maleate, methyl itaconate, ethyl acrylate, butyl acrylate and butyl methacrylate;
- while adjusting the amount of the polymer produced to at least 8,000 g per gram of the titanium trichloride composition, wherein the molar ratios of unsaturated carboxylic acid ester (C) and organoaluminum compound (B) to titanium trichloride composition (A) are 0.01-2:1 and 1-100:1, respectively, and the titanium trichloride composition (A) is a composition obtained by reducing titanium tetrachloride with an organoaluminum compound of the general formula:
- R'.sub.n AlX'.sub.3-n
- wherein R' represents a straight chain or branched chain alkyl group, an alicyclic hydrocarbon group or an aromatic hydrocarbon group, each containing up to 18 carbon atoms, X' represents a halogen atom or a hydrogen atom, and n is a number of 1.ltoreq.n.ltoreq.3, at a temperature of about -100.degree. to 60.degree. C.; treating the resulting solid reduction product with an ether in an amount of about 0.05 to 3 times by mole based on the titanium trichloride contained in the solid product, at a temperature of about 0.degree. to 100.degree. C.; contacting the resulting ether-treated solid with an aluminum compound of the general formula:
- R".sub.p AlX.sub.3-p
- wherein R" represents a straight chain or branched chain alkyl group, an alicyclic hydrocarbon group or an aromatic hydrocarbon group, each containing up to 18 carbon atoms, X represents a halogen atom, and p is a number of 1.ltoreq.p<1.5, in an amount of about 0.1 to 10 times by mole based on the titanium trichloride contained in the ether-treated solid in the presence of an organic halogen compound of the general formula:
- R'"X
- wherein R'" represents a straight chain alkyl group, an alicyclic hydrocarbon group or an aromatic hydrocarbon group, each containing up to 18 carbon atoms, and X represents a halogen atom in an amount of 0.01 to 1 mole per mole of the aluminum compound; and thereafter contacting the resulting solid with a mixture of a halogenated hydrocarbon of the general formula:
- TI CH.sub.q X.sub.4-q
- wherein X is a halogen atom and q is an integer satisfying the relationship 0.ltoreq.q<4, and an ether in amounts of 0.001 to 1.0 and 0.001 to 5 times by mole based on the titanium trichloride contained in the aluminum compound-treated solid, respectively.
- 3. The process of claim 1 or 2, wherein the ether used in said ether-treatment and said halogenated hydrocarbon-ether mixture-treatment is a compound represented by the formula:
- R.sub.1 --O--R.sub.2
- wherein R.sub.1 and R.sub.2, which may be the same or different, each is a straight or branched alkyl group, an alicyclic group or an aromatic hydrocarbon group, each having up to 10 carbon atoms.
- 4. The process of claim 3, wherein the ether is a member selected from the group consisting of diethyl ether, di-n-propyl ether, diisopropyl ether, di-n-butyl ether, diisoamyl ether, dineopentyl ether, di-n-hexyl ether, di-n-octyl ether, diphenyl ether, di-o-tolyl ether, di-p-tolyl ether, and dicyclohexyl ether.
- 5. The process of claim 4, wherein the ether is di-n-butyl ether or diisoamyl ether.
- 6. The process of claim 1 or 2, wherein the unsaturated carboxylic acid ester (C) is methyl methacrylate.
- 7. The process of claim 1 or 2, wherein the unsaturated hydrocarbon monomer copolymerizable therewith is ethylene.
Priority Claims (1)
Number |
Date |
Country |
Kind |
51-82374 |
Jul 1976 |
JPX |
|
CROSS-REFERENCE TO THE RELATED APPLICATION
This application is a continuation-in-part application of U.S. Patent Application Ser. No. 814,579, filed July 11, 1977, now abandoned entitled "Process for Producing Polypropylene Polymer or Copolymer".
US Referenced Citations (7)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1128090 |
Sep 1968 |
GBX |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
814579 |
Jul 1977 |
|