US5227236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing thermoplastic matrix fiber-reinforced prepregs and composite structure products formed thereby
Assignee: Cytec Technology Corp
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Filing: 1991-07-29
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Granted: 1993-07-13
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Expires: 2011-07-29
Abstract
Abstract Hybrid and commingled yarns containing reinforcing fibers and thermoplastic matrix fibers when sized with a dispersion or emulsion having a dispersed phase containing a thermoplastic compatible with the thermoplastic of the matrix fibers but having a lower melting point allow preparation of thermoplastic matrix fiber reinforced composite structures at reduced consolidation temperatures, cycle times, and/or consolidation pressures without loss of composite physical properties.
Inventors
- 👤 Alan C. Handermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:19
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2907; Y10T428/2913; Y10T428/2922; Y10T428/2929; Y10T428/2933; Y10T428/2936; Y10T428/2938; Y10T428/294; Y10T428/2942; Y10T442/00; Y10T442/60; Y10T442/603; Y10T442/607
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
47 words
A hybrid yarn containing reinforcing fibers and thermoplastic matrix fibers sized with a primary size dispersion comprising a dispersed phase comprising a compatible thermoplastic having a melting point below the melting point of the thermoplastic matrix fibers dispersed in a continuous phase which is a volatile liquid.
Claim 2
Dependent Claim
47 words
A hybrid yarn containing reinforcing fibers and thermoplastic matrix fibers sized with a primary size dispersion comprising a dispersed phase comprising a compatible thermoplastic having a melting point below the melting point of the thermoplastic matrix fibers dispersed in a continuous phase which is a volatile liquid.
Claim 3
Dependent Claim
16 words
The hybrid yarn of claim 1 wherein the major part of said volatile liquid comprises water.
Claim 4
Dependent Claim
14 words
The hybrid yarn of claim 1 wherein said hybrid yarn is a commingled yarn.
Claim 5
Dependent Claim
21 words
The hybrid yarn of claim 1 wherein said thermoplastic matrix fibers are selected from the group consisting of the aliphatic polyamides.
Claim 6
Dependent Claim
21 words
The hybrid yarn of claim 4 wherein said aliphatic polyamide is selected from the group consisting of polycaprolactan and nylon 66.
Claim 7
Dependent Claim
15 words
A composite article prepared by the process of thermoforming the hybrid yarn of claim 1.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-12 | 1997-01-11 | 1997-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-12 | 2001-01-11 | 2001-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-12 | 2005-01-11 | 2005-07-13 | $7700.00 | Window Closed / Lapsed |