US4563508A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection moldable aromatic polyesters compositions and method of preparation
Assignee: Syensqo Specialty Polymers USA LLC
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Filing: 1984-05-18
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Granted: 1986-01-07
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Expires: 2004-05-18
Abstract
Abstract The molding properties of molding compounds based on wholly aromatic polyesters are improved by the addition to such wholly aromatic polyester compositions of a minor amount of an aromatic polyester which is a combination of the following units: <IMAGE> <IMAGE> <IMAGE> Where; p=0 to 0.9, q=0.1 to 1.00, r=1 to 7, S=0.3 to 1.00, t=0 to 0.7. A preferred formulation consists of a polyester where the units are: p=0, q=1.0, r=1 to 5 and S=1.0.
Inventors
- 👤 Steve G. Cottis
- 👤 Richard Layton
- 👤 Nathan D. Field
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:15
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/04; C08G; C08G63/00; C08G63/02; C08G63/60; C08G63/605; C08L67/02
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
54 words
In the process of molding articles comprising aromatic oxybenzoyl polyesters the improvement which comprises adding to the aromatic oxybenzoyl polyester composition a minor amount of a different polymeric flow modifier comprising combinations of the following units ##STR3## Where; p=0 to 0.9, q=0.1 to 1.00, r=1 to 7, s=0.3 to 1.00, and t=0 to 0.7.
Claim 2
Dependent Claim
54 words
In the process of molding articles comprising aromatic oxybenzoyl polyesters the improvement which comprises adding to the aromatic oxybenzoyl polyester composition a minor amount of a different polymeric flow modifier comprising combinations of the following units ##STR3## Where; p=0 to 0.9, q=0.1 to 1.00, r=1 to 7, s=0.3 to 1.00, and t=0 to 0.7.
Claim 3
Dependent Claim
22 words
The process of claim 1 wherein the ratio of the units in the formula is p=0, q=1.0, r=1 to 5 and s=1.0.
Claim 4
Dependent Claim
21 words
The process of claim 1 wherein the flow modifier is present in an amount of from about 1% to about 20%.
Claim 5
Dependent Claim
21 words
The process of claim 1 wherein the flow modifier is present in an amount of from about 2% to about 10%.
Claim 6
Dependent Claim
24 words
The process of claim 1 wherein the aromatic oxybenzoyl polyester is a polyester prepared by the reaction of terephthalic acid, p-hydroxybenzoic acid and biphenol.
Claim 7
Dependent Claim
26 words
The process of claim 1 wherein the aromatic oxybenzoyl polyester flow modifier is a polyester prepared by the reaction of isophthalic acid p-hydroxybenzoic acid and biphenol.
Claim 8
Dependent Claim
29 words
The process of claim 1 wherein the aromatic oxybenzoyl polyester is a polyester prepared by the reaction of a mixture of isophthalic and terephthalic acids, p-hydroxybenzoic acid and biphenol.
Claim 9
Dependent Claim
22 words
The process of claim 5 wherein the terephthalic acid, p-hydroxybenzoic acid and biphenol are present in the respective ratios 1:0.1:1 to 1:15:1.
Claim 10
Dependent Claim
20 words
The process of claim 5 wherein the terephthalic acid, p-hydroxybenzoic acid and biphenol are present in the ratio of 1:2:1.
Claim 11
Dependent Claim
48 words
A composition which is capable of forming shaped articles comprising a minor amount of a polymeric flow modifier comprising combinations of the following units ##STR4## Where; p=0 to 0.9, q=0.1 to 1.00, r=1 to 7, s=0.3 to 1.00, and t=0 to 0.7 and a different aromatic oxybenzoyl polyester.
Claim 12
Dependent Claim
48 words
A composition which is capable of forming shaped articles comprising a minor amount of a polymeric flow modifier comprising combinations of the following units ##STR4## Where; p=0 to 0.9, q=0.1 to 1.00, r=1 to 7, s=0.3 to 1.00, and t=0 to 0.7 and a different aromatic oxybenzoyl polyester.
Claim 13
Dependent Claim
23 words
A composition according to claim 10 wherein the ratio of the units in claim 8 is p=0, q=1.0, r=1 to 7 and s=1.0.
Claim 14
Dependent Claim
22 words
A composition according to claim 10 wherein the flow modifier is present in an amount of from about 1% to about 20%.
Claim 15
Dependent Claim
22 words
A composition according to claim 12 wherein the flow modifier is present in an amount of from about 2% to about 10%.
Claim 16
Dependent Claim
25 words
A composition according to claim 10 wherein the aromatic oxybenzoyl polyester is a polyester prepared by the reaction of terephthalic acid, p-hydroxybenzoic acid and biphenol.
Claim 17
Dependent Claim
27 words
A composition according to claim 10 wherein the aromatic oxybenzoyl polyester flow modifier is a polyester prepared by the reaction of isophthalic acid p-hydroxybenzoic acid and biphenol.
Claim 18
Dependent Claim
30 words
A composition according to claim 10 wherein the aromatic oxybenzoyl polyester is a polyester prepared by the reaction of a mixture of isophthalic and terephthalic acids, p-hydroxybenzoic acid and biphenol.
Claim 19
Dependent Claim
24 words
A composition according to claim 14 wherein the terephthalic acid, p-hydroxybenzoic acid and biphenol are present in the respective ratios of 1:0.1:1 to 1:15:1.
Claim 20
Dependent Claim
21 words
A composition according to claim 14 wherein the terephthalic acid, p-hydroxybenzoic acid and biphenol are present in the ratio of 1:2:1.
Claim 21
Dependent Claim
26 words
The process of claim 5 wherein the aromatic oxybenzoyl polyester flow modifier is a polyester prepared by the reaction of isophthalic acid, p-hydroxybenzoic acid and biphenol.
Claim 22
Dependent Claim
27 words
A composition according to claim 14 wherein the aromatic oxybenzoyl polyester flow modifier is a polyester prepared by the reaction of isophthalic acid, p-hydroxybenzoic acid and biphenol.
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) | 1989-01-06 | 1989-07-08 | 1990-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-06 | 1993-07-08 | 1994-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-06 | 1997-07-08 | 1998-01-07 | $7700.00 | Window Closed / Lapsed |