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US4267301A
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Linear hydroquinone phenoxy polymers and process
Assignee: Eastman Chemical Co
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Filing: 1979-12-31
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Granted: 1981-05-12
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Expires: 1999-12-31
Abstract
Abstract This invention relates to a process for the preparation of thermoplastic polymers. Specifically it relates to a process for the preparation of a substantially linear, high molecular weight phenoxy resin from hydroquinone, optionally up to about 20 mole percent of a second aromatic diol, epichlorohydrin (or another epihalohydrin) and a base, such as sodium hydroxide. Hydroquinone phenoxy resin is characterized by low permeability to oxygen and carbon dioxide and is, therefore, useful as a gas-barrier layer in multilayer plastic film constructions used in food-packaging and beverage bottle applications, for example. For use in such applications, the resin is generally in the form of a thin, uniform film prepared by extrusion, casting, or other such method. It is highly desirable that polymers used in this manner be as free as possible from chain branches or crosslinks, as these lead to the formation of gel particles which cause imperfections in the polymer film. These imperfections, in turn, detract from the appearance of the film. Moreover, as is well known, increasing the amount of chain branching in a polymer results in a undesirable reduction of flexibility and toughness.
Inventors
- 👤 Eric G. Olsen
- 👤 Winston J. Jackson, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:47
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2603; C08G65/2606; C08G65/2612; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
61 words
Process for the preparation of high molecular weight linear hydroquinone phenoxy polymer from hydroquinone and an epihalohydrin, said process comprising reacting hydroquinone with about 0.95 L to about 1.05 equivalents of an epihalohydrin in the presence of about 1.0 to 1.1 equivalents of a base and of about one to seven parts by weight solvent for said polymer per part polymer.
Claim 2
Dependent Claim
61 words
Process for the preparation of high molecular weight linear hydroquinone phenoxy polymer from hydroquinone and an epihalohydrin, said process comprising reacting hydroquinone with about 0.95 L to about 1.05 equivalents of an epihalohydrin in the presence of about 1.0 to 1.1 equivalents of a base and of about one to seven parts by weight solvent for said polymer per part polymer.
Claim 3
Dependent Claim
23 words
Process of claim 1 wherein water is present in the amount of about 0.8 to 10 parts by weight water per part polymer.
Claim 4
Dependent Claim
11 words
Process of claim 2 wherein said solvent is immiscible with water.
Claim 5
Dependent Claim
24 words
Process of claim 1 wherein said solvent is selected from cyclohexanone, 2-butanone, acetophenone, dichloromethane, γ-butyrolactone, sulfolane, dimethyl sulfoxide, N-methyl-2-pyrrolidone, N,N-dimethyl formamide and triethyl phosphate.
Claim 6
Dependent Claim
24 words
Process of claim 1 wherein said base is selected from sodium hydroxide, potassium hydroxide, lithium hydroxide, tetraalkylammonium hydroxides and alkali metal salts of alcohols.
Claim 7
Dependent Claim
24 words
Process of claim 1 wherein a phase transfer catalyst is present in the amount of up to about 10 mole percent of the hydroquinone.
Claim 8
Dependent Claim
20 words
Process of claim 6 wherein said catalyst is selected from quaternary ammonium halides, sulfates, acetates, cyclic polyethers and acyclic polyethers.
Claim 9
Dependent Claim
21 words
Process of claim 7 wherein said catalyst is present in the amount of 1 to 5 mole percent of the hydroquinone.
Claim 10
Dependent Claim
15 words
Process of claim 8 wherein said catalyst is selected from benzyltrimethylammonium chloride and benzyltriethylammonium chloride.
Claim 11
Dependent Claim
16 words
Process of claim 1 wherein the reaction temperature is from about 50° C. to 100° C.
Claim 12
Dependent Claim
16 words
Process of claim 1 wherein the reaction temperature is from about 80° C. to 90° C.
Claim 13
Dependent Claim
20 words
Process of claim 1 wherein up to about 20 mole percent of the hydroquinone is replaced with an aromatic diol.
Claim 14
Dependent Claim
10 words
Process of claim 12 wherein said aromatic diol is resorcinol.
Claim 15
Dependent Claim
20 words
Process of claim 1 wherein up to about 10 mole percent of the hydroquinone is replaced with an aromatic diol.
Claim 16
Dependent Claim
10 words
Process of claim 14 wherein said aromatic diol is resorcinol.
Claim 17
Dependent Claim
63 words
Linear hydroquinone phenoxy polymer prepared from hydroquinone and an epihalohydrin, said polymer being characterized by an inherent viscosity of about 0.45 to 0.9 as determined at 25° C. in a 60/40 by volume mixture of phenol/tetrachloroethane solvent at a concentration of 0.5 gram/deciliter, a molecular weight distribution, as determined by gel permeation chromatography, of Mw /Mn ≦about 4 and Mz /Mn ≦about 10.
Claim 18
Dependent Claim
63 words
Linear hydroquinone phenoxy polymer prepared from hydroquinone and an epihalohydrin, said polymer being characterized by an inherent viscosity of about 0.45 to 0.9 as determined at 25° C. in a 60/40 by volume mixture of phenol/tetrachloroethane solvent at a concentration of 0.5 gram/deciliter, a molecular weight distribution, as determined by gel permeation chromatography, of Mw /Mn ≦about 4 and Mz /Mn ≦about 10.
Claim 19
Dependent Claim
16 words
Linear hydroquinone phenoxy polymer of claim 16, wherein the inherent viscosity is about 0.5 to 0.7.
Claim 20
Dependent Claim
13 words
Linear hydroquinone phenoxy polymer of claim 16 wherein Mw /Mn is ≦about 3.
Claim 21
Dependent Claim
19 words
Linear hydroquinone phenoxy polymer of claim 16 modified with up to about 20 mole percent of an aromatic diol.
Claim 22
Dependent Claim
10 words
Process of claim 19 wherein said aromatic diol is resorcinol.
Claim 23
Dependent Claim
19 words
Linear hydroquinone phenoxy polymer of claim 16 modified with up to about 10 mole percent of an aromatic diol.
Claim 24
Dependent Claim
10 words
Process of claim 21 wherein said aromatic diol is resorcinol.
Claim 25
Dependent Claim
8 words
Shaped object of the polymer of claim 16.
Claim 26
Dependent Claim
8 words
Shaped object of the polymer of claim 19.
Claim 27
Dependent Claim
8 words
Shaped object of the polymer of claim 20.
Claim 28
Dependent Claim
8 words
Shaped object of the polymer of claim 21.
Claim 29
Dependent Claim
8 words
Shaped object of the polymer of claim 22.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-11 | 1984-11-10 | 1985-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-11 | 1988-11-10 | 1989-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-11 | 1992-11-10 | 1993-05-12 | $7700.00 | Window Closed / Lapsed |