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US4201855A
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Novel polyesters and preparation thereof by interfacial condensation of bifunctional acid halides or anhydrides with bisphenols
Assignee: Honeywell International Inc
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Filing: 1977-06-17
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Granted: 1980-05-06
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Expires: 1997-06-17
Abstract
Abstract Novel copolyesters are prepared by the interfacial condensation of bifunctional acid halides or anhydrides with bisphenols dissolved in mixtures of alkaline materials and liquid polyhydroxy hydrocarbons, ethers or amines. The copolyesters form useful fibers and plastic materials.
Inventors
- 👤 Leon Segal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:16
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/16; C08G63/18; C08G63/19; C08G63/193; C08G63/195
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
47 words
A process for preparing polyesters comprising condensing a halide or anhydride of an aromatic dicarboxylic acid dissolved in an alkyl halide and/or aromatic hydrocarbon with a bisphenol dissolved in a mixture of an alkaline hydroxide and a polyhydroxy derivative of a liquid aliphatic hydrocarbon, ether or amine.
Claim 2
Dependent Claim
47 words
A process for preparing polyesters comprising condensing a halide or anhydride of an aromatic dicarboxylic acid dissolved in an alkyl halide and/or aromatic hydrocarbon with a bisphenol dissolved in a mixture of an alkaline hydroxide and a polyhydroxy derivative of a liquid aliphatic hydrocarbon, ether or amine.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein the bisphenol solution is diluted with water prior to condensation.
Claim 4
Dependent Claim
21 words
The process of claim 2 wherein the bisphenol solution is diluted with about one to ten times its volume of water.
Claim 5
Dependent Claim
15 words
The process of claim 1 wherein a chloride of the aromatic dicarboxylic acid is employed.
Claim 6
Dependent Claim
43 words
The process of claim 4 wherein the aromatic dicarboxylic acid is an aromatic ring having two p-carboxyl groups or two or more aromatic rings connected in para position directly or by one or two aliphatic carbon atoms and having terminal para carboxyl groups.
Claim 7
Dependent Claim
24 words
The process of claim 5 wherein the aromatic dicarboxylic acid is a member of the group consisting of terephthalic acid and 4,4'-benzophenone dicarboxylic acid.
Claim 8
Dependent Claim
14 words
The process of claim 1 wherein the alkaline hydroxide is an alkali metal hydroxide.
Claim 9
Dependent Claim
13 words
The process of claim 7 wherein the alkali metal hydroxide is sodium hydroxide.
Claim 10
Dependent Claim
22 words
The process of claim 7 wherein the mole ratio of alkali metal hydroxide to bisphenol is in the range of about 0.1-3:1.
Claim 11
Dependent Claim
23 words
The process of claim 1 wherein the polyhydroxy derivative of an aliphatic hydrocarbon, ether or amine is a polyhydroxy alkane or its polyether.
Claim 12
Dependent Claim
11 words
The process of claim 10 wherein the polyhydroxy alkane is glycol.
Claim 13
Dependent Claim
19 words
The process of claim 1 wherein the bisphenol is an oligomer of a bisphenol condensed with a dicarboxylic acid.
Claim 14
Dependent Claim
39 words
The process of claim 1 wherein the bisphenol is an aromatic ring having two p-hydroxy groups or two or more aromatic rings para connected directly or by up to two aliphatic carbon atom linkages with terminal para hydroxy groups.
Claim 15
Dependent Claim
26 words
The process of claim 1 wherein the bisphenol is a member of the group consisting of condensates of bisphenol-A, and terephthalic acid or 4,4'benzophenone dicarboxylic acid.
Claim 16
Dependent Claim
20 words
A copolyester comprising an alternate sequence of a bisphenol oligomer having terminal phenolic hydroxy groups and an aromatic dicarboxylic acid.
Claim 17
Dependent Claim
20 words
A copolyester comprising an alternate sequence of a bisphenol oligomer having terminal phenolic hydroxy groups and an aromatic dicarboxylic acid.
Claim 18
Dependent Claim
18 words
The copolyester of claim 15 wherein the bisphenol oligomer is an oligomer prepared from bisphenol-A and terephthalic acid.
Claim 19
Dependent Claim
14 words
The copolyester of claim 15 wherein the aromatic dicarboxylic acid is 4,4'benzophenone dicarboxylic acid.
Claim 20
Dependent Claim
40 words
The copolyester as set forth in claim 15 wherein (a) the bisphenol oligomer is a [bisphenol-A] n+1 [terephthalic acid] n ester wherein n is an integer of 1 to 20, and (b) the aromatic dicarboxylic acid is 4,4'-benzophenone dicarboxylic acid.
Claim 21
Dependent Claim
29 words
A copolyester comprising an alternate sequence of a mixture of bisphenols, at least one of which is substantially insoluble in aqueous alkali metal hydroxide, and an aromatic dicarboxylic acid.
Claim 22
Dependent Claim
29 words
A copolyester comprising an alternate sequence of a mixture of bisphenols, at least one of which is substantially insoluble in aqueous alkali metal hydroxide, and an aromatic dicarboxylic acid.
Claim 23
Dependent Claim
18 words
A copolyester comprising an alternate sequence of bisphenol-A, and a mixture of terephthalic acid and 4,4'-benzophenone dicarboxylic acid.
Claim 24
Dependent Claim
18 words
A copolyester comprising an alternate sequence of bisphenol-A, and a mixture of terephthalic acid and 4,4'-benzophenone dicarboxylic acid.
Claim 25
Dependent Claim
26 words
A liquid composition comprising a bisphenol dissolved in a mixture of an alkaline hydroxide and a liquid polyhydroxy derivative of an aliphatic hydrocarbon, ether or amine.
Claim 26
Dependent Claim
26 words
A liquid composition comprising a bisphenol dissolved in a mixture of an alkaline hydroxide and a liquid polyhydroxy derivative of an aliphatic hydrocarbon, ether or amine.
Claim 27
Dependent Claim
13 words
The liquid composition of claim 21 wherein the liquid polyhydroxy derivative is glycol.
Claim 28
Dependent Claim
20 words
The process as set forth in claim 1 wherein the condensing temperature is between about -20° C. and 80° C.
Claim 29
Dependent Claim
20 words
The process as set forth in claim 1 wherein the condensing temperature is between about 0° C. and 25° C.
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) | 1983-05-06 | 1983-11-05 | 1984-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-06 | 1987-11-05 | 1988-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-06 | 1991-11-05 | 1992-05-06 | $7700.00 | Window Closed / Lapsed |