Patent US4011193A successfully refreshed from Google Patents.
US4011193A
Expired / Lapsed
US
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Reinforced thermoplastic polyester compositions
Assignee: General Electric Co
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Filing: 1972-12-13
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Granted: 1977-03-08
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Expires: 1992-12-13
Abstract
Abstract Reinforced thermoplastic compositions are provided comprising a high molecular weight linear polyester, and a minor proportion of potassium titanate, substantially in the form of single filament crystals. The use of the potassium titanate elevates strength, modulus and heat deflection temperature, while retaining the inherent toughness of the polyester resin component.
Inventors
- 👤 Allen D. Wambach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:49
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
56 words
A reinforced thermoplastic composition comprising: a. a high molecular weight poly(1,4-butylene terephthalate) resin, and b. potassium titanate, substantially in the form of single crystal filaments, in a minor proportion based on said composition, in an amount at least sufficient to reinforce the composition but in an amount not in excess of that which embrittles the composition.
Claim 2
Dependent Claim
56 words
A reinforced thermoplastic composition comprising: a. a high molecular weight poly(1,4-butylene terephthalate) resin, and b. potassium titanate, substantially in the form of single crystal filaments, in a minor proportion based on said composition, in an amount at least sufficient to reinforce the composition but in an amount not in excess of that which embrittles the composition.
Claim 3
Dependent Claim
30 words
A composition as defined in claim 1 wherein the ratio of length to diameter in said single crystal filaments is from about 10 to 1 to about 100 to 1.
Claim 4
Dependent Claim
24 words
A composition as defined in claim 2 wherein the ratio of length to diameter in said single crystal filaments is about 40 to 1.
Claim 5
Dependent Claim
30 words
A composition as defined in claim 1 wherein the potassium titanate comprises from about 1 to about 10% by weight of the combined weights of component (a) and component (b).
Claim 6
Dependent Claim
30 words
A composition as defined in claim 1 wherein the potassium titanate comprises from about 1 to about 5% by weight of the combined weights of component (a) and component (b).
Claim 7
Dependent Claim
39 words
A composition as defined in claim 1 wherein said poly(1,4-butylene terephthalate) has an intrinsic viscosity of at least about 0.8 deciliters per gram when measured in a solution in a 60:40 mixture of phenol and trichloroethane at 30° C.
Claim 8
Dependent Claim
36 words
A composition as defined in claim 6 wherein said poly(1,4-butylene terephthalate) has an intrinsic viscosity of at least about 1.1 deciliters per gram when measured in a solution in a 60:40 mixture of phenol and trichloroethane.
References Cited (Backward Citations)
CA879151A
Cited
US3129105A
Cited
GB1010043A
Cited
US3530079A
Cited
US3953394A
Cited
US3953394B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |