US3846367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral reinforced nylon composition with high impact strength
Assignee: EIDP Inc
•
Filing: 1973-05-24
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Granted: 1974-11-05
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Expires: 1993-05-24
Abstract
Abstract A composition containing polyhexamethylene adipamide and polycaprolactam. 8 to 20% by weight of the total polyamide is polycaprolactam. Said composition also contains a mineral reinforcing filler in the amount of 25 to 45 percent by weight. Said composition also contains a silane coupling agent. Said composition has improved toughness and notched izod impact strength.
Inventors
- 👤 Burton L Lasseter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:06
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/54; C08L; C08L77/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
80 words
A POLYAMIIDE COMPOSITION COMPRISING (1) A BLEND OF POLYCAPROLACTAM AND POLYHEXAMETHYLENE ADIPAMIDE, SAID BLEND CONTAINING BETWEEN 8 TO 20 PERCENT BY WEIGHT POLYCAPROLACTAM BASED ON THE WEIGHT OF THE TOTAL POLYAMIDE PRESENT, SAID BLEND COMPRISING 55 TO 75 PERCENT BY WEIGHT OF THE COMPOSITION, (2) 25 TO 45 PERCENT BY WEIGHT OF THE COMPOSITION OF A MINERAL REINFORCING AGENT AND 83) A SILANE COUPLING AGENT IN THE AMOUNT OF 0.25 TO 2 PERCENT BY WEIGHT OF THE MINERAL REINFORCING AGENT.
Claim 2
Dependent Claim
80 words
A POLYAMIIDE COMPOSITION COMPRISING (1) A BLEND OF POLYCAPROLACTAM AND POLYHEXAMETHYLENE ADIPAMIDE, SAID BLEND CONTAINING BETWEEN 8 TO 20 PERCENT BY WEIGHT POLYCAPROLACTAM BASED ON THE WEIGHT OF THE TOTAL POLYAMIDE PRESENT, SAID BLEND COMPRISING 55 TO 75 PERCENT BY WEIGHT OF THE COMPOSITION, (2) 25 TO 45 PERCENT BY WEIGHT OF THE COMPOSITION OF A MINERAL REINFORCING AGENT AND 83) A SILANE COUPLING AGENT IN THE AMOUNT OF 0.25 TO 2 PERCENT BY WEIGHT OF THE MINERAL REINFORCING AGENT.
Claim 3
Dependent Claim
25 words
The composition of claim 1 in which polycaprolactam is present in the amount of 15 to 18 percent by weight of the total polyamide present.
Claim 4
Dependent Claim
21 words
The composition of claim 2 in which the mineral reinforcing agent is selected from the class consisting of silica and silicates.
Claim 5
Dependent Claim
25 words
The composition of claim 3 in which 75 percent by weight of the mineral reinforcing agent is less than 10 microns in its largest dimension.
Claim 6
Dependent Claim
23 words
The composition of claim 4 in which the silane coupling agent is selected from the class consisting of amino, epoxy and vinyl silane.
Claim 7
Dependent Claim
13 words
The composition of claim 1 in which the silica coupling agent is 3-aminopropyltriethoxysilane.
Claim 8
Dependent Claim
18 words
The composition of claim 1 in which the polyamide components have a relative viscosity between 40 and 80.
Claim 9
Dependent Claim
14 words
The composition of claim 4 in which the mineral reinforcing agent is fibrous wollastonite.
Claim 10
Dependent Claim
13 words
The composition of claim 4 in which the mineral reinforcing agent is silica.
Claim 11
Dependent Claim
15 words
The composition of claim 1 containing 2 to 15 percent by weight fibrous potassium titanate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |