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US4255280A
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Catalyst for polymerization of olefins
Assignee: Asahi Kasei Corp
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Filing: 1979-03-12
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Granted: 1981-03-10
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Expires: 1999-03-12
Abstract
Abstract Catalysts for polymerization of olefin which comprise a solid catalyst component (A) and an organometallic compound with a heterocyclic carboxylic acid ester (B), wherein the solid catalyst component (A) is obtained by reacting or/and grinding an organomagnesium compound (1), of the formula M.sub.α Mg.sub.β R.sub.p.sup.1 R.sub.q.sup.2 X.sub.r wherein α, p, q and r each independently ≧0, β>0, p+q+r=mα+2β M is Al, Zn, B or Be, m is the valence of M, R 1 and R 2 are the same or different hydrocarbon groups having 1-20 carbon atoms, and X is a halogen atom, or of the reaction product of M.sub.α Mg.sub.β R p 1 R q 2 X r with an electron donor, with 0.01 to 100 moles of (ii) a chlorosilane compound containing Si-H bonds and of the formula H.sub.a SiClR.sub.4-(a+b).sup.3 wherein 0<a≦2, a titanium halide (2) and a carboxylic acid ester (3); and the heterocyclic carboxylic acid ester is N--, S--, or O--containing heterocyclic compound, and processes for polymerization of olefin employing such a catalyst.
Inventors
- 👤 Hisaya Sakurai
- 👤 Hideo Morita
- 👤 Masayoshi Miya
- 👤 Katsuhiko Takaya
- 👤 Haruyuki Yoneda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:20
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
238 words
In a catalyst useful for polymerizing olefins comprising a magnesium compound, a titanium compound, an electron donor, and an organometallic compound, wherein a solid (1) obtained by reacting one mole of (i) an organomagnesium component of the formula M.sub.α Mg.sub.β R.sub.p.sup.1 R.sub.q.sup.2 X.sub.r wherein α, p, q and r each independently ≧0, β>0, p+q+r=mα+2β M is Al, Zn, B or Be, m is the valence of M, R 1 and R 2 are the same or different hydrocarbon groups having 1-20 carbon atoms, and X is a halogen atom, or of the reaction product of M 60 Mg 62 R p 1 R q 2 X r with an electron donor, with 0.01 to 100 moles of (ii) a chlorosilane compound containing Si--H bonds and of the formula H.sub.a SiClR.sub.4-(a+b).sup.3 wherein 0<a≦2, b>0, a+b≦4, and R 3 is a hydrocarbon group having 1-20 carbon atoms, is used as a catalyst raw material, a solid catalyst component (A) is obtained by reacting and/or grinding said solid (1), a titanium compound (2) selected from a tetravalent titanium compound containing at least one halogen atom and/or a halide of trivalent titanium, and a carboxylic acid ester (3) and said catalyst component (A) is used with a component (B) which is an organometallic compound and a carboxylic acid ester (3), the improvement wherein said last-mentioned carboxylic acid ester (3) of component (B) is a nitrogen-, sulfur- and/or oxygen-containing heterocyclic carboxylic acid ester.
Claim 2
Dependent Claim
238 words
In a catalyst useful for polymerizing olefins comprising a magnesium compound, a titanium compound, an electron donor, and an organometallic compound, wherein a solid (1) obtained by reacting one mole of (i) an organomagnesium component of the formula M.sub.α Mg.sub.β R.sub.p.sup.1 R.sub.q.sup.2 X.sub.r wherein α, p, q and r each independently ≧0, β>0, p+q+r=mα+2β M is Al, Zn, B or Be, m is the valence of M, R 1 and R 2 are the same or different hydrocarbon groups having 1-20 carbon atoms, and X is a halogen atom, or of the reaction product of M 60 Mg 62 R p 1 R q 2 X r with an electron donor, with 0.01 to 100 moles of (ii) a chlorosilane compound containing Si--H bonds and of the formula H.sub.a SiClR.sub.4-(a+b).sup.3 wherein 0<a≦2, b>0, a+b≦4, and R 3 is a hydrocarbon group having 1-20 carbon atoms, is used as a catalyst raw material, a solid catalyst component (A) is obtained by reacting and/or grinding said solid (1), a titanium compound (2) selected from a tetravalent titanium compound containing at least one halogen atom and/or a halide of trivalent titanium, and a carboxylic acid ester (3) and said catalyst component (A) is used with a component (B) which is an organometallic compound and a carboxylic acid ester (3), the improvement wherein said last-mentioned carboxylic acid ester (3) of component (B) is a nitrogen-, sulfur- and/or oxygen-containing heterocyclic carboxylic acid ester.
Claim 3
Dependent Claim
24 words
A catalyst for polymerizing olefins according to claim 1, wherein (3) of (B) is a lower alkyl ester of a nitrogen-containing heterocyclic carboxylic acid.
Claim 4
Dependent Claim
24 words
A catalyst for polymerizing olefins according to claim 1, wherein (3) of (B) is a lower alkyl ester of a sulfur-containing heterocyclic carboxylic acid.
Claim 5
Dependent Claim
24 words
A catalyst for polymerizing olefins according to claim 1, wherein (3) of (B) is a lower alkyl ester of an oxygen-containing heterocyclic carboxylic acid.
Claim 6
Dependent Claim
27 words
A catalyst for polymerizing olefins according to claim 1, wherein solid catalyst component (A) is further treated with a halide of tetravalent titanium before combination with (B).
Claim 7
Dependent Claim
19 words
A catalyst for polymerizing olefins according to claim 5, wherein the further treating tetravalent titanium halide is titanium tetrachloride.
Claim 8
Dependent Claim
25 words
A catalyst for polymerizing olefins according to claim 1, wherein the organomagnesium component (i) is a hydrocarbon-soluble organomagnesium complex which corresponds to α>0 and r=0.
Claim 9
Dependent Claim
96 words
A catalyst for polymerizing olefins according to claim 1, wherein the organomagnesium component (i) is a hydrocarbon-soluble organomagnesium compound wherein α=0, r=0, and (a) R 1 is a secondary or tertiary alkyl group having 4 to 6 carbon atoms, and R 2 is a hydrocarbon group having 4 to 6 carbon atoms, or (b) R 1 is an alkyl group having 2 to 3 carbon atoms, and R 2 is an alkyl group having at least 4 carbon atoms, or (c) R 1 and R 2 both are alkyl groups having at least 6 carbon atoms.
Claim 10
Dependent Claim
24 words
A catalyst for polymerizing olefins according to claim 1, wherein the organomagnesium component (i) is an organomagnesium halide wherein α=0, β=1, q=0 and r=1.
Claim 11
Dependent Claim
19 words
A catalyst for polymerizing olefins according to claim 1, wherein α>0 and β/α is from about 0.5 to 10.
Claim 12
Dependent Claim
41 words
A catalyst for polymerizing olefins according to claim 1, wherein carboxylic acid ester (3) of component (A) is reacted with the solid (1) in an amount of 0.001 to 50 mols per 1 mol of hydrocarbon group remaining in solid (1).
Claim 13
Dependent Claim
61 words
A catalyst for polymerizing olefins according to claim 1, wherein the organometallic compound of component (B) is an organoaluminum compound represented by the general formula AlR n 4 Z 3-n , wherein R 4 is a hydrocarbon group having 1 to 20 carbon atoms; Z is hydrogen, halogen or an alkoxy, aryloxy or siloxy group; and n is 2 or 3.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-09 | 1984-09-08 | 1985-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-09 | 1988-09-08 | 1989-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-09 | 1992-09-08 | 1993-03-10 | $7700.00 | Window Closed / Lapsed |