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US4675373A
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Polyhydroxy polyether, process for its production, and its use
Assignee: Mitsui Chemicals Inc
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Filing: 1986-04-16
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Granted: 1987-06-23
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Expires: 2006-04-16
Abstract
Abstract A substantially linear polyhydroxy polyether, which (1) is composed substantially of aromatic units and aliphatic units, the proportion of the aromatic units being 50 to 98 mole % based on the total amount of the aromatic units and the aliphatic units, (2) has an intrinsic viscosity, measured at 25° C. in o-chlorophenol, of from 0.3 to 2 dl/g, and (3) has a glass transition, temperature of from 30° to 120° C. Two processes for preparing the polyhydroxy polyether are proposed. The polyhydroxy polyether is useful in applications which require gas-barrier property.
Inventors
- 👤 Tadao Yatsu
- 👤 Etsuji Ishimaru
- 👤 Kimiyoshi Miura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:55
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/28; B32B27/285; B32B27/36; B32B27/06; B32B27/08; C; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/066; C08G65/00; C08G65/02; C08G65/26; C08G65/2603; C08G65/2606
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
126 words
A substantially linear polyhydroxy polyether, which (1) is composed substantially of aromatic units represented by the following formula (I)-A ##STR31## wherein R 1 represents a divalent aromatic hydrocarbon group composed mainly of a p-phenylene group, and aliphatic units represented by the following formula (I)-B ##STR32## wherein R 2 represents a divalent aliphatic hydrocarbon group having 2 to 6 carbon atoms, and p is a positive number of from 1 to 20, the proportion of the aromatic units being 50 to 98 mole % based on the total amount of the aromatic units and the aliphatic units, (2) has an intrinsic viscosity, measured at 25° C. in o-chlorophenol, of from 0.3 to 2 dl/g, and (3) has a glass transition temperature of from 30° to 120° C.
Claim 2
Dependent Claim
126 words
A substantially linear polyhydroxy polyether, which (1) is composed substantially of aromatic units represented by the following formula (I)-A ##STR31## wherein R 1 represents a divalent aromatic hydrocarbon group composed mainly of a p-phenylene group, and aliphatic units represented by the following formula (I)-B ##STR32## wherein R 2 represents a divalent aliphatic hydrocarbon group having 2 to 6 carbon atoms, and p is a positive number of from 1 to 20, the proportion of the aromatic units being 50 to 98 mole % based on the total amount of the aromatic units and the aliphatic units, (2) has an intrinsic viscosity, measured at 25° C. in o-chlorophenol, of from 0.3 to 2 dl/g, and (3) has a glass transition temperature of from 30° to 120° C.
Claim 3
Dependent Claim
32 words
The polyhydroxy polyether of claim 1 wherein the proportion of the aromatic units is 55 to 97 mole % based on the total amount of the aromatic units and the aliphatic units.
Claim 4
Dependent Claim
15 words
The polyhydroxy polyether of claim 1 wherein the intrinsic viscosity is 0.4 to 1.5 dl/g.
Claim 5
Dependent Claim
20 words
The polyhydroxy polyether of claim 1 wherein the glass transition temperature is in the range of 40° to 110° C.
Claim 6
Dependent Claim
25 words
The polyhydroxy polyether of claim 1 which has a weight average molecular weight (Mw)/number average molecular weight (Mn) ratio, (Mw/Mn), of from 1.5 to 10.
Claim 7
Dependent Claim
118 words
A process for producing the polyhydroxy polyether of claim 1, which comprises reacting (a) a polyhydroxy polyoxide represented by the general formula (II) ##STR33## wherein R 1 represents a divalent aromatic hydrocarbon group composed of a p-phenylene group as a main component, R 2 represents a divalent aliphatic hydrocarbon group having 2 to 6 carbon atoms, p represents a positive number of from 1 to 20, and q is a positive number, (b) an aromatic diol represented by the following formula (III) HO--R.sup.1 --OH (III) wherein R 1 is as defined above, and (c) an epihalohydrin, in a two-phase mixed solvent composed of water and an organic solvent in the presence of a base and/or a phase-transfer catalyst.
Claim 8
Dependent Claim
132 words
A process for producing the polyhydroxy polyether of claim 1, which comprises reacting (a') an aromatic diol represented by the general formula (III) HO--R.sup.1 --OH (III) wherein R 1 represents a divalent aromatic hydrocarbon group composed of a p-phenylene group as a main component, (b') a diglycidyl ether of an aromatic diol represented by the general formula (IV) ##STR34## wherein R 1 is as defined, and (c') a diglycidyl ether of an aliphatic diol represented by the general formula (V) ##STR35## wherein R 2 represents a divalent aliphatic hydrocarbon group having 2 to 6 carbon atoms, and p is a positive number of from 1 to 20, in the presence of at least one catalyst selected from the group consisting of tertiary amines, quaternary ammonium compounds, tertiary phosphines and quaternary phosphonium compounds.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-22 | 1998-12-22 | 1999-06-23 | $7700.00 | Window Closed / Lapsed |