US4658065A
Expired / Lapsed
US
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Process for producing polyether polyol and a product
Assignee: Asahi Kasei Corp
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Filing: 1985-03-27
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Granted: 1987-04-14
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Expires: 2005-03-27
Abstract
Abstract A process for producing a polyether polyol with a content of 0.5 to 99.5% by weight of oxytetramethylene groups derived from tetrahydrofuran by copolymerizing tetrahydrofuran or a mixture of tetrahydrofuran and another cyclic ether copolymerizable therewith with a polyhydric alcohol having two or more hydroxyl groups per one molecule with the use of a heteropoly-acid and/or its salt as a catalyst, which comprises allowing 0.1 to 15 molecules of water per one heteropoly-anion to exist in the catalyst phase. The above-described polyether polyol is an industrially useful polymer which is a starting material for polyurethane to be used for spandex or a synthetic leather, etc.
Inventors
- 👤 Atsushi Aoshima
- 👤 Shoichiro Tonomura
- 👤 Hiroyuki Fukui
- 👤 Hisaya Imai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:41
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2642; C08G65/2645; C08G65/2666; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/4854; C08G18/4858; C08G65/04; C08G65/06; C08G65/16; C08G65/20
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
68 words
A process for producing a polyether polyol with a content of 0.5 to 99.5% by weight of oxytetramethylene groups derived from tetrahydrofuran by copolymerizing tetrahydrofuran with a polyhydric alcohol having two or more hydroxyl groups per one molecule with the use of a heteropoly-acid and/or its salt as a catalyst, which comprises allowing 0.1 to 15 molecules of water per one heteropoly-anion to exist in the catalyst phase.
Claim 2
Dependent Claim
68 words
A process for producing a polyether polyol with a content of 0.5 to 99.5% by weight of oxytetramethylene groups derived from tetrahydrofuran by copolymerizing tetrahydrofuran with a polyhydric alcohol having two or more hydroxyl groups per one molecule with the use of a heteropoly-acid and/or its salt as a catalyst, which comprises allowing 0.1 to 15 molecules of water per one heteropoly-anion to exist in the catalyst phase.
Claim 3
Dependent Claim
29 words
A process according to claim 1, wherein the amount of water existing in the catalyst phase is within the range of from 1 to 8 molecules per one heteropolyanion.
Claim 4
Dependent Claim
77 words
A process for producing a polyether polyol with a content of 0.5 to 99.5% by weight of oxytetramethylene groups derived from tetrahydrofuran by copolymerizing a mixture of tetrahydrofuran and other cyclic ether copolymerizable therewith with a polyhydric alcohol having two or more hydroxyl groups per one molecule with the use of a heteropoly-acid and/or its salt as a catalyst, which comprises allowing 0.1 to 15 molecules of water per one heteropoly-anion to exist in the catalyst phase.
Claim 5
Dependent Claim
77 words
A process for producing a polyether polyol with a content of 0.5 to 99.5% by weight of oxytetramethylene groups derived from tetrahydrofuran by copolymerizing a mixture of tetrahydrofuran and other cyclic ether copolymerizable therewith with a polyhydric alcohol having two or more hydroxyl groups per one molecule with the use of a heteropoly-acid and/or its salt as a catalyst, which comprises allowing 0.1 to 15 molecules of water per one heteropoly-anion to exist in the catalyst phase.
Claim 6
Dependent Claim
29 words
A process according to claim 3, wherein the amount of water existing in the catalyst phase is within the range of from 1 to 8 molecules per one heteropolyanion.
Claim 7
Dependent Claim
24 words
A process according to any of claims 1 to 4, wherein the polyhydric alcohol is a dihydric alcohol having 2 to 10 carbon atoms.
Claim 8
Dependent Claim
48 words
A process according to claim 5, wherein the dihydric alcohol is one or a mixture of two or more compounds selected from the group consisting of ethylene diol, 2methyl-1,3-propanediol, 1,5-pentane doil, glycol, propylene glycol, 1,3-propane diol, 1,4-butane neopentyl glycol, 2-methyl-1,4-butane diol, hexane diol, heptane diol and octane diol.
Claim 9
Dependent Claim
35 words
A process according to claim 1, wherein a low molecular weight polymer of the polyether polyol obtained by copolymerizing tetrahydrofuran and the polyhydric alcohol is used as at least a part of the polyhydric alcohol.
Claim 10
Dependent Claim
69 words
A process according to claim 3, wherein a low molecular weight polymer of the polyether polyol obtained by copolymerizing tetrahydrofuran, other cyclic ether copolymerizable therewith and the polyhydric alcohol is used as at least a part of the polyhydric alcohol, or an oligomeric cyclic ether obtained by copolymerizing tetrahydrofuran, other cyclic ether copolymerizable therewith and the polyhydric alcohol is used as at least a part of the cyclic ether.
Claim 11
Dependent Claim
81 words
A process according to any of claims 1 to 4, wherein the polymerization system forms a two-liquid phase comprising the organic phase of starting materials and the catalyst liquid phase, and the reaction is carried out in the two-liquid phase system in which the catalyst liquid phase exists at 10 vol. % or more of the total liquid phase in the reactor, followed after the reaction by phase separation to recover a polyether polyol from the organic phase of starting materials.
Claim 12
Dependent Claim
30 words
A process according to any of claims 1 to 4, wherein the catalyst or the phase containing the catalyst is recovered by separation and used repeatedly for the polymerization reaction.
Claim 13
Dependent Claim
58 words
A process according to any of claims 1 to 4, 7 and 8, wherein the catalyst is a heteropoly-acid formed by condensation of at least one oxide selected from the group consisting of Mo, W and V and an oxy-acid of the element selected from the group consisting of P, Si, As, Ge, B, Ti, Ce and Co.
Claim 14
Dependent Claim
68 words
A process according to claim 11, wherein the heteropoly-acid is one or a mixture of two or more compounds selected from the group consisting of 12-molybdophosphoric acid, 18-molybdo-2-phosphoric acid, 9-molybdophosphoric acid, 12-tungstophosphoric acid, 18-tungsto-2-phosphoric acid, 11-molybdo-1-vanadophosphoric acid, 12-molybdotungstophosphoric acid, 6-molybdo-6-tungstophosphoric acid, 12-molybdotungstovanadophosphoric acid, 12-tungstovanadophosphoric acid, 12-molybdosilicic acid, 12-tungstosilicic acid, 12-molybdotungstosilicic acid, 12-molybdotungstovanadosilicic acid, 12-tungstoboric acid, 12-molybdoboric acid, 12-molybdo-tungstoboric acid, 12-molybdovanadoboric acid, 12-molybdotungstovanadoboric acid, 12-tungstogermanic acid and 12-tungstoarsenic acid.
Claim 15
Dependent Claim
51 words
A process according to claim 5, wherein the catalyst is a heteropoly-acid formed by condensation of at least one oxide selected from the group consisting of Mo, W and V and an oxy-acid of the element selected from the group consisting of P, Si, As, Ge, B, Ti, Ce and Co.
Claim 16
Dependent Claim
68 words
A process according to claim 13, wherein the heteropoly-acid is one or a mixture of two or more compounds selected from the group consisting of 12-molybdophosphoric acid, 18-molybdo-2-phosphoric acid, 9-molybdophosphoric acid, 12-tungstophosphoric acid, 18-tungsto-2-phosphoric acid, 11-molybdo-1-vanadophosphoric acid, 12-molybdotungstophosphoric acid, 6-molybdo-6-tungstophosphoric acid, 12-molybdotungstovanadophosphoric acid, 12-tungstovanadophosphoric acid, 12-molybdosilicic acid, 12-tungstosilicic acid, 12-molybdotungstosilicic acid, 12-molybdotungstovandosilicic acid, 12-tungstoboric acid, 12-molybdoboric acid, 12-molybdo-tungstoboric acid, 12-molybdovanadoboric acid, 12-molybdotungstovanadoboric acid, 12-tungstogermanic acid and 12-tungstoarsenic acid.
Claim 17
Dependent Claim
51 words
A process according to claim 9, wherein the catalyst is a heteropoly-acid formed by condensation of at least one oxide selected from the group consisting of Mo, W and V and an oxy-acid of the element selected from the group consisting of P, Si, As, Ge, B, Ti, Ce and Co.
Claim 18
Dependent Claim
67 words
A process according to claim 15, wherein heteropoly-acid is one or a mixture of two or more compounds selected from the group consisting of 12-molybdophosphoric acid, 18-molybdo-2-phosphoric acid, 9-molybdophosphoric acid, 12-tungstophosphoric acid, 18-tungsto-2-phosphoric acid, 11-molybdo-1-vanadophosphoric acid, 12-molybdotungstophosphoric acid, 6-molybdo-6-tungstophosphoric acid, 12-molybdotungstovanadophosphoric acid, 12-tungstovanadophosphoric acid, 12-molybdosilicic acid, 12-tungstosilicic acid, 12-molybdotungstosilicic acid, 12-molybdotungstovanadosilicic acid, 12-tungstoboric acid, 12-molybdoboric acid, 12-molybdo-tungstoboric acid, 12-molybdovanadoboric acid, 12-molybdotungstovanadoboric acid, 12-tungstogermanic acid and 12-tungstoarsenic acid.
Claim 19
Dependent Claim
51 words
A process according to claim 10, wherein the catalyst is a heteropoly-acid formed by condensation of at least one oxide selected from the group consisting of Mo, W and V and an oxy-acid of the element selected from the group consisting of P, Si, As, Ge, B, Ti, Ce and Co.
Claim 20
Dependent Claim
68 words
A process according to claim 15, wherein the heteropoly-acid is one or a mixture of two or more compounds selected from the group consisting of 12-molybdophosphoric acid, 18-molybdo-2-phosphoric acid, 9-molybdophosphoric acid, 12-tungstophosphoric acid, 18-tungsto-2-phosphoric acid, 11-molybdo-1-vanadophosphoric acid, 12-molybdotungstophosphoric acid, 6-molybdo-6-tungstophosphoric acid, 12-molybdotungstovanadophosphoric acid, 12-tungstovanadophosphoric acid, 12-molybdosilicic acid, 12-tungstosilicic acid, 12-molybdotungstosilicic acid, 12-molybdotungstovanadosilicic acid, 12-tungstoboric acid, 12-molybdoboric acid, 12-molybdo-tungstoboric acid, 12-molybdovanadoboric acid, 12-molybdotungstovanadoboric acid, 12-tungstogermanic acid and 12-tungstoarsenic 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) | 1990-04-13 | 1990-10-13 | 1991-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-04-13 | 1994-10-13 | 1995-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-04-13 | 1998-10-13 | 1999-04-14 | $7700.00 | Window Closed / Lapsed |