US4057600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing block copolymers
Assignee: Idemitsu Kosan Co Ltd
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Filing: 1976-12-06
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Granted: 1977-11-08
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Expires: 1996-12-06
Abstract
Abstract Block copolymers are produced by (i) polymerizing ethylene or propylene, or copolymerizing the same with another alpha -olefin of 2 to 7 carbon atoms in the presence of a Ziegler-type catalyst, and (ii) copolymerizing the resulting polymer or copolymer with a radical-polymerizable vinyl compound (e.g., methyl methacrylate) in the presence of an organic sulfoxide.
Inventors
- 👤 Akio Kimura
- 👤 Kenji Seki
- 👤 Mamoru Ukita
- 👤 Satoshi Asahi
- 👤 Sanae Tagami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:18
CPC Classifications
C; C08; C08F; C08F295/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
100 words
A process for producing a block copolymer which comprises i. polymerizing ethylene or propylene or copolymerizing ethylene or propylene with another α-olefin having from 2 to 7 carbon atoms in the presence of a Ziegler-type catalyst comprising (a) an organic metal compound or a hydrogenated compound thereof wherein the metal is selected from groups I to III of the Periodic Table and (b) a transition metal compound of a metal selected from groups IV to VI of the Periodic Table, and ii. copolymerizing the resultant polymer or copolymer with a radical-polymerizable vinyl compound in the presence of an organic sulfoxide.
Claim 2
Dependent Claim
100 words
A process for producing a block copolymer which comprises i. polymerizing ethylene or propylene or copolymerizing ethylene or propylene with another α-olefin having from 2 to 7 carbon atoms in the presence of a Ziegler-type catalyst comprising (a) an organic metal compound or a hydrogenated compound thereof wherein the metal is selected from groups I to III of the Periodic Table and (b) a transition metal compound of a metal selected from groups IV to VI of the Periodic Table, and ii. copolymerizing the resultant polymer or copolymer with a radical-polymerizable vinyl compound in the presence of an organic sulfoxide.
Claim 3
Dependent Claim
39 words
Process according to claim 1, wherein said α-olefin having from 2 to 7 carbon atoms is selected from the group consisting of ethylene, propylene, butene-1, pentene-1, 3-methyl butene-1, hexene-1, 4-methyl pentene-1, 3-ethyl butene-1, heptene-1, 4,4-dimethyl pentene-1 and 3,3-dimethyl butene-1.
Claim 4
Dependent Claim
21 words
Process according to claim 1, wherein said Ziegler-type catalyst is a catalyst comprising an organic aluminum compound and a titanium halide.
Claim 5
Dependent Claim
27 words
Process according to claim 3, wherein the molar ratio of said catalyst components is from 0.6 to 5.0 of the organic aluminum compound to the titanium halide.
Claim 6
Dependent Claim
38 words
Process according to claim 1, wherein said radical-polymerizable vinyl compound is a member selected from the group consisting of acrylic acid, methacrylic acid, ethacrylic acid, an acrylic ester, a methacrylic ester, a vinyl ester, 4-vinyl pyridine and acrylonitrile.
Claim 7
Dependent Claim
28 words
Process according to claim 1, wherein said organic sulfoxide is a member selected from the group consisting of a dialkyl sulfoxide, an aromatic sulfoxide and a dialkoxy sulfoxide.
Claim 8
Dependent Claim
16 words
Process according to claim 1, wherein (i) is carried out in the presence of hydrogen gas.
Claim 9
Dependent Claim
15 words
Process according to claim 1, wherein an organic halide is present with said organic sulfoxide.
Claim 10
Dependent Claim
32 words
Process according to claim 8, wherein said organic halide is a member selected from the group consisting of carbon tetrachloride, carbon tetrabromide, chloroform, dichloromethane, benzyl chloride, benzyl bromide and p-methyl benzyl chloride.
Claim 11
Dependent Claim
22 words
Process according to claim 1, wherein the molar ratio of the organic sulfoxide to the titanium halide is from 0.01 to 50.
Claim 12
Dependent Claim
22 words
Process according to claim 8, wherein the molar ratio of the organic halide to the organic sulfoxide is from 0.1 to 10.
Claim 13
Dependent Claim
16 words
Process according to claim 1, wherein the temperature in (ii) is from 30° to 100° C.
Claim 14
Dependent Claim
12 words
Process according to claim 1, wherein the organic sulfoxide is dimethyl sulfoxide.
Claim 15
Dependent Claim
12 words
Process according to claim 8, wherein the organic halide is carbon tetrachloride.
Claim 16
Dependent Claim
11 words
Process according to claim 1, wherein ethylene is used in (i).
Claim 17
Dependent Claim
11 words
Process according to claim 1, wherein propylene is used in (i).
Claim 18
Dependent Claim
13 words
Process according to claim 1, wherein the radical-polymerizable vinyl compound is methyl methacrylate.
Claim 19
Dependent Claim
12 words
Process according to claim 1, wherein (a) is an organic zinc compound.
Claim 20
Dependent Claim
11 words
Process according to claim 1, wherein (b) is a vanadium halide.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-11-07 | 1981-05-09 | 1981-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-07 | 1985-05-09 | 1985-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-07 | 1989-05-09 | 1989-11-08 | $7700.00 | Window Closed / Lapsed |