US3894997A
Expired / Lapsed
US
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Process for preparing an alternating copolymer of a conjugated vinyl compound and an olefinic unsaturated compound
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1973-01-04
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Granted: 1975-07-15
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Expires: 1993-01-04
Abstract
Abstract An alternating copolymer of an olefinic unsaturated compound and a conjugated vinyl compound is produced by contacting said monomers with at least one organoboron halide or/and a mixture of at least one organo-compound of metal from Groups IIb, IIIb and IVb of the Mendeleev Periodic Table and at least one halogenocompound of metal from Groups IIIb and IVb of the Mendeleev Periodic Table. A typical catalyst is ethylboron dichloride or a combination of triethylaluminum and tin tetrachloride.
Inventors
- 👤 Kohei Nakaguchi
- 👤 Shohachi Kawasumi
- 👤 Masaaki Hirooka
- 👤 Hiroshi Yabuuchi
- 👤 Hiroyoshi Takao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:10
CPC Classifications
C; C08; C08F; C08F4/00; C08F4/06; C08F4/12; C08F4/14; C08F10/00; C08F110/00; C08F110/04; C08F110/06
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
17 words
IN A PROCESS FOR PREPARING AN ALTERNATING COPOLYMER BY COPOLYMERIZING AN OLEFINIC UNSATURATED COMPOUND HAVING THE FORMULA,
Claim 2
Dependent Claim
17 words
IN A PROCESS FOR PREPARING AN ALTERNATING COPOLYMER BY COPOLYMERIZING AN OLEFINIC UNSATURATED COMPOUND HAVING THE FORMULA,
Claim 3
Dependent Claim
15 words
A process according to claim 1, wherein the catalyst is at least one alkylboron halide.
Claim 4
Dependent Claim
23 words
A process according to claim 1, wherein the catalyst is selected from the group consisting of diethylboron chloride, ethylboron dichloride, borontrichloride and triethylboron.
Claim 5
Dependent Claim
17 words
IN A PROCESS FOR PREPARING AN ALTERNATING COPOLYMER BY COPOLYMERIZING AN OLEFINIC UNSATURATED COMPOUND HAVING THE FORMULA:
Claim 6
Dependent Claim
17 words
IN A PROCESS FOR PREPARING AN ALTERNATING COPOLYMER BY COPOLYMERIZING AN OLEFINIC UNSATURATED COMPOUND HAVING THE FORMULA:
Claim 7
Dependent Claim
45 words
A process according to claim 4, wherein the olefinic unsaturated compound is isobutylene or propylene, the conjugated vinyl compound is an acrylic ester, and the catalyst is at least one organoboron halide having the formula: BR''''''nX3 n wherein R'''''', X and n are defined above.
Claim 8
Dependent Claim
43 words
A process according to claim 1, wherein the catalyst is at least one organo-boron halide having the formula: BR''''''nX3 n wherein R'''''' is a hydrocarbon radical having 1 to 20 carbon atoms, X is a halogen atoms, and n is 1 or 2.
Claim 9
Dependent Claim
34 words
A process according to claim 1, wherein said hydrocarbon and halogen-containing hydrocarbon radicals of said RI and RII are selected from the group consisting of alkyl, aryl, aralkyl, alkylaryl, cycloalkyl and halogen-substituted derivative thereof.
Claim 10
Dependent Claim
24 words
A process according to claim 1, wherein R'''''' and RIV and alkyl, alkenyl, aryl, aralkyl, alkylaryl or cycloalkyl having 1 to 20 carbon atoms.
Claim 11
Dependent Claim
70 words
A process according to claim 1, wherein said compound of the formula BR''''''nX3 n is selected from the group consisting of methylboron dichloride, ethylboron dichloride, ethylboron diiodide, ethylboron difluoride, butylboron dichloride, hexylboron dichloride, dodecylboron dichloride, phenylboron dichloride, tolylboron dichloride, benzylboron dichloride, cyclohexylboron dichloride, dimethylboron chloride, diethylboron chloride, diethylboron bromide, dipropylboron chloride, dibutylboron chloride, dipentylboron chloride, dihexylboron chloride, dioctylboron chloride, dioctadecylboron chloride, ethylvinylboron chloride, diphenylboron chloride, dicyclopentadienylboron chloride and dicyclohexylboron chloride.
Claim 12
Dependent Claim
118 words
A process according to claim 1, wherein said compound of the formula BR''''''nX3 n is selected from the group consisting of methylboron dichloride, ethylboron dichloride, ethylboron diiodide, ethylboron difluoride, butylboron dichloride, hexylboron dichloride, dodecylboron dichloride, phenylboron dichlororide, tolylboron dichloride, benzylboron dichloride, cyclohexylboron dichloride, dimethylboron chloride, diethylboron chloride, diethylboron bromide, dipropylboron chloride, dibutylboron chloride, dipentylboron chloride, dihexylboron chloride, dioctylboron chloride, dioctadecylboron chloride, ethylvinylboron chloride, diphenylboron chloride, dicyclopentadienylboron chloride and dicyclohexylboron chloride; wherein the compound of the formula BRIV3 is selected from the group consisting of trimethylboron, triethylboron, tributylboron, trihexylboron, diethylphenylboron, diethyl-p-tolylboron, triphenylboron, tribenzylboron and tricyclohexylboron; and wherein the compound of the formula BX''3 is selected from the group consisting of boron trichloride, boron trifluoride, boron tribromide, and boron triiodide.
Claim 13
Dependent Claim
27 words
A process according to claim 1, wherein said catalyst is present in an amount of from 0.005 to 10 moles per mole of said conjugated vinyl compound.
Claim 14
Dependent Claim
24 words
A process according to claim 1, wherein said catalyst is present in an amount substantially equimolar to the amount of said conjugated vinyl compound.
Claim 15
Dependent Claim
75 words
A process according to claim 1, wherein said olefinic unsaturated compound is selected from the group consisting of an aliphatic Alpha -olefin, an aromatic Alpha -olefin, an alicyclic Alpha -olefin, a vinyl halide, a vinylidene halide, an allyl halide, and said conjugated vinyl compound is selected from the group consisting of acrylonitrile, and acrylate, a thiolacrylate, an acrylamide, and acryloyl halide, acrylic acid, thiolacrylic acid, a salt of these acids, acrolein and a vinyl ketone.
Claim 16
Dependent Claim
60 words
A process according to claim 1, wherein olefinic unsaturated compound is selected from the group consisting of propylene, isobutylene, styrene, Alpha -methylstyrene, vinyl chloride, vinylidene chloride, and an allyl halide and said conjugated vinyl compound is selected from the group consisting of acrylonitrile, an acrylate, a thiolacrylate, acrylamide, an N-substituted acrylamide, an N,N-disubstituted acrylamide, an acryloyl halide and acrylic acid.
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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) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |