US3697496A
Expired / Lapsed
US
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Method for the polymerization of a compound containing an oxirane group
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1969-07-25
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Granted: 1972-10-10
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Expires: 1989-07-25
Abstract
Abstract Polyalkylene oxides are produced advantageously by contacting an alkylene oxide monomer with a novel and excellent catalyst obtained by reacting (i) aluminum alkoxide, (ii) phosphoric acid or an organophosphoric acid ester, and (iii) an aliphatic alcohol and/or an organometallic compound of metals of Group II or III of Mendeleev''s Periodic Table.
Inventors
- 👤 Katsuji Ueno
- 👤 Takao Oshima
- 👤 Hideo Seki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:39
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2642; C08G65/269
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
46 words
A method according to claim 1, wherein said mono-oxirane compound is selected from the group consisting of ethylene oxide, propylene oxide, 1,2-epoxybutane, 2,3-epoxy butane, epichlorohydrin, epibromohydrin, trifluoromethylethylene oxide, cyclohexene oxide, methylglycidyl ether, glycidol, phenyglycidyl ether, butadiene monoxide, allylglycidyl ether, glycidyl acrylate, styrene oxide and mixtures thereof.
Claim 2
Dependent Claim
32 words
A method according to claim 1, wherein said alkyl of said aluminum alkoxide is selected from the group consisting of methyl, ethyl, n-propyl, n-butyl, isobutyl, n-pentyl, iso-pentyl, iso-propyl, sec-butyl, t-butyl and t-pentyl.
Claim 3
Dependent Claim
30 words
A method according to claim 1, wherein said aluminum alkoxide is selected from the group consisting of aluminum-tri-n-butyl alkoxide, aluminum-tri-isopropyl alkoxide, aluminum di-isopropyl monohydroxyl alkoxide and aluminum di-n-butyl monochloro alkoxide.
Claim 4
Dependent Claim
25 words
A method according to claim 1 wherein said phosphoric acid is selected from the group consisting of orthophosphoric acid, condensed phosphoric acid and phosphorous acid.
Claim 5
Dependent Claim
29 words
A method according to claim 1 wherein said organophosphoric acid ester is selected from the group consisting of monomethyl phosphate, diethyl phosphate, mono-n-butyl phosphate, di-i-butyl phosphate and diphenyl phosphate.
Claim 6
Dependent Claim
19 words
A method according to claim 1 wherein said aliphatic alcohol is one having from one to nine carbon atoms.
Claim 7
Dependent Claim
24 words
A method according to claim 1 wherein said aliphatic alcohol is selected from the group consisting of n-butyl alcohol, isopropyl alcohol and n-amyl alcohol.
Claim 8
Dependent Claim
22 words
A method according to claim 1, wherein said reaction is conducted at a temperature of from about -80* C to about 200*C.
Claim 9
Dependent Claim
44 words
A method according to claim 1, wherein aluminum alkoxide and said member selected from the group consisting of phosphoric acid and organophosphoric acid ester and alcohol are reacted and wherein the reaction product is reacted with said organometallic compound after removing any formed alcohol.
Claim 10
Dependent Claim
16 words
A method according to claim 1, wherein said reaction is carried out in an inert medium.
Claim 11
Dependent Claim
27 words
A method according to claim 11 wherein said inert medium is selected from the group consisting of an aliphatic hydrocarbon, an alicyclic hydrocarbon ether, and mixtures thereof.
Claim 12
Dependent Claim
29 words
A method according to claim 12, wherein said aliphatic hydrocarbon is selected from the group consisting of hexane, i-hexane, 3-methylpentane, 2,3-dimethylbutane, n-heptane, 2,2-dimethylpentane, 2-methylhexane, 3-methylhexane, n-octane i-octane and n-nonane.
Claim 13
Dependent Claim
41 words
A method according to claim 12, wherein said alicyclic hydrocarbon is selected from the group consisting of cyclobutane, cyclopentane, cyclohexane, cycloheptane, cyclooctane, cyclononane, decalin, and derivatives thereof attached to an organo group selected from the group consisting of carbon and hydrogen.
Claim 14
Dependent Claim
40 words
A method according to claim 12, wherein said ether is selected from the group consisting of diethyl ether, di-n-propyl ether, di-i-propyl ether, di-n-butyl ether, di-i-butyl ether, di-sec-butyl ether, diethylene glycol diethyl ether, anisol, phenetol, diphenyl ether, tetrahydrofuran, 1,4-dioxane, and 1,3-dioxane.
Claim 15
Independent Claim
29 words
A method according to clam 1, wherein the amount of said catalyst is from about 0.05 to about 10 percent by weight, based on weight of said mono-oxirane compound.
Claim 16
Dependent Claim
39 words
A method according to claim 1, wherein the amount of said member selected from the group consisting of phosphoric acid and organophosphoric acid ester is from about 0.05 to about 3 moles, per one mole of said aluminum alkoxide.
Claim 17
Dependent Claim
44 words
A method according to claim 1 wherein the amount of said aliphatic alcohol is from one to 100 times by weight of the total amount of said aluminum alkoxide and said member selected from the group consisting of phosphoric acid and organophosphoric acid ester.
Claim 18
Dependent Claim
25 words
A method according to claim 1, wherein said catalyst further contains an organometallic compound selected from the group consisting of dialkyl zinc and trialkyl aluminum.
Claim 19
Dependent Claim
22 words
A method according to claim 19, wherein said organometallic compound is selected from the group consisting of zinc diethyl and aluminum triethyl.
Claim 20
Dependent Claim
26 words
A method according to claim 19 wherein the amount of said organometallic compound is from 0.01 to 10 moles per one mole of said aluminum alkoxide.
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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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |