Patent US330380A successfully refreshed from Google Patents.
Patent US4028435A successfully refreshed from Google Patents.
US4028435A
Expired / Lapsed
US
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Process for producing block copolymers
Assignee: Idemitsu Kosan Co Ltd
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Filing: 1976-09-20
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Granted: 1977-06-07
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Expires: 1996-09-20
Abstract
Abstract Block copolymers of (i) a polymer of ethylene or propylene, or copolymer of ethylene or propylene with another alpha -olefin and (ii) a polymer of an acrylic ester or a methacrylic ester are formed by polymerizing (i) in the presence of a titanium halide and an organic aluminum compound, and then adding in order (a), (b) and (c) to copolymerize a product so obtained with (a) an acrylic ester or a methacrylic ester, in the presence of (b) an organic phosphorus compound or tertiary amine and (c) a benzyl halide, a ring-alkylated benzyl halide, a benzyl halide in which a methylene hydrogen is replaced with an alkyl or aryl group, or an alkyl halide.
Inventors
- 👤 Kenji Seki
- 👤 Akio Kimura
- 👤 Satoshi Asahi
- 👤 Yasuhiro Takeshita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:28
CPC Classifications
C; C08; C08F; C08F295/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
170 words
A process for producing a block copolymer of (i) a polymer of ethylene or propylene, or a copolymer of ethylene or propylene with another α-olefin, and (ii) a polymer of an acrylic ester or a methacrylic ester, which comprises polymerizing ethylene or propylene, or copolymerizing them, with another α-olefin having from 2 to 7 carbon atoms in the presence of catalytic amounts of titanium halide and an organic aluminum compound of the formula AlR n X 3-n wherein R is an alkyl group having from 1 to 5 carbon atoms, X is a halogen and n is a integer of from 1 to 3, adding in order (a), (b) and (c) to a polymeric product so obtained and copolymerizing therewith (a) an acrylic ester or a methacrylic ester, in the presence of (b) an organic phosphorus compound or a tertiary amine, and (c) a benzyl halide, a ring-alkylated benzyl halide, a benzyl halide in which a methylene hydrogen is replaced with an alkyl or aryl group, or an alkyl halide.
Claim 2
Dependent Claim
170 words
A process for producing a block copolymer of (i) a polymer of ethylene or propylene, or a copolymer of ethylene or propylene with another α-olefin, and (ii) a polymer of an acrylic ester or a methacrylic ester, which comprises polymerizing ethylene or propylene, or copolymerizing them, with another α-olefin having from 2 to 7 carbon atoms in the presence of catalytic amounts of titanium halide and an organic aluminum compound of the formula AlR n X 3-n wherein R is an alkyl group having from 1 to 5 carbon atoms, X is a halogen and n is a integer of from 1 to 3, adding in order (a), (b) and (c) to a polymeric product so obtained and copolymerizing therewith (a) an acrylic ester or a methacrylic ester, in the presence of (b) an organic phosphorus compound or a tertiary amine, and (c) a benzyl halide, a ring-alkylated benzyl halide, a benzyl halide in which a methylene hydrogen is replaced with an alkyl or aryl group, or an alkyl halide.
Claim 3
Dependent Claim
38 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-1and 3,3-dimethyl butene-1.
Claim 4
Dependent Claim
15 words
Process according to claim 1, wherein the methacrylic ester is an alkylene glycol mono-methacrylic ester.
Claim 5
Dependent Claim
14 words
Process according to claim 3, wherein the alkylene glycol mono-methacrylic ester is 2-hydroxyethyl methacrylate.
Claim 6
Dependent Claim
12 words
Process according to claim 1, wherein the methacrylic ester is methyl methacrylate.
Claim 7
Dependent Claim
21 words
Process according to claim 1, wherein the organic aluminum compound is a trialkyl aluminum having short straight chain aliphatic alkyl groups.
Claim 8
Dependent Claim
19 words
Process according to claim 6, wherein the trialkyl aluminum of short straight chain aliphatic alkyl groups is triethyl aluminum.
Claim 9
Dependent Claim
23 words
Process according to claim 1, wherein the titanium halide is selected from the group consisting of titanium tetrachloride, titanium trichloride and titanium dichloride.
Claim 10
Dependent Claim
27 words
Process according to claim 1, wherein the organic phosphorus compound is a member selected from the group consisting of a phosphine, phosphite, phosphate, phosphoramide and mixtures thereof.
Claim 11
Dependent Claim
18 words
Process according to claim 1, wherein the tertiary amine is 1,8-diaza-bicyclo-5,4,0] undecene-7 or its phenolate, caproate or oleate.
Claim 12
Dependent Claim
12 words
Process according to claim 1, wherein the tertiary amine is triethyl amine.
Claim 13
Dependent Claim
24 words
Process according to claim 1, wherein the alkyl halide is selected from the group consisting of carbon tetrachloride, chloroform, methylene chloride and t-butyl chloride.
Claim 14
Dependent Claim
31 words
Process according to claim 1, wherein said polymerization in the presence of said titanium halide and said organic aluminum compound is conducted at a temperature of from 30° to 100° C.
Claim 15
Dependent Claim
19 words
Process according to claim 1, wherein said copolymerization is conducted at a temperature of from 30° to 100° C.
Claim 16
Dependent Claim
22 words
Process according to claim 1, wherein the molar ration of said organic alumimum compound to titanium halide is from 0.6 to 5.0.
Claim 17
Dependent Claim
29 words
Process according to claim 1, wherein the molar ratio of titanium to ethylene or propylene or sum of ethylene or propylene and another α-olefin is from 1/10 to 1/100,000.
References Cited (Backward Citations)
US3739042A
Cited
US3458598A
Cited
US3692712A
Cited
US3652724A
Cited
US3699190A
Cited
US3734978A
Cited
US3800007A
Cited
US3851015A
Cited
US3887650A
Cited
US3949016A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |