US4009043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced plastics and a process for their production
Assignee: Bayer AG
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Filing: 1975-11-05
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Granted: 1977-02-22
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Expires: 1995-11-05
Abstract
Abstract Moulding compositions comprising 60 - 90% BY WEIGHT OF AT LEAST ONE THERMOPLASTIC AND/OR THERMOSETTING POLYMER, 5 - 30% BY WEIGHT OF CARBON FIBRES AND 5 - 30% BY WEIGHT OF POTASSIUM TITANATE WHISKERS (K2Ti6O13) result in plastics with extraordinary mechanical properties. Said properties are essentially better than those obtained with equivalent quantities of the individual fibre components on their own.
Inventors
- 👤 Lothar Preis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:09
CPC Classifications
C; C08; C08K; C08K7/00; C08K7/02; C08K7/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
85 words
Moulding compositions containing 60 to 90% by weight of a thermoplastic or thermosetting polymer or a mixture thereof, 5 to 30% by weight of carbon fibres with an average fibre length of from 200 to 1,000μm and an average fibre diameter of from 6 to 10 μm and 5 and 30% by weight of potassium titanate whiskers of the formula K.sub.2 Ti.sub.6 O.sub.13, with an average fibre length of from 5 to 10 μm and an average fibre diameter of from 0.10 to 0.15 μm.
Claim 2
Dependent Claim
85 words
Moulding compositions containing 60 to 90% by weight of a thermoplastic or thermosetting polymer or a mixture thereof, 5 to 30% by weight of carbon fibres with an average fibre length of from 200 to 1,000μm and an average fibre diameter of from 6 to 10 μm and 5 and 30% by weight of potassium titanate whiskers of the formula K.sub.2 Ti.sub.6 O.sub.13, with an average fibre length of from 5 to 10 μm and an average fibre diameter of from 0.10 to 0.15 μm.
Claim 3
Dependent Claim
48 words
Moulding compositions as claimed in claim 1 wherein polyolefins, styrene polymers, graft copolymers, halogen-containing homopolymers or copolymers, polyvinyl acetates, polyacrylates or polymethacrylates, cellulose derivatives, polyesters, polyamides polyurethanes, unsaturated polyester resins, epoxide resins, phenol-, urea-, melamine- or furan-formaldehyde resins, cyanate resins, polyimides or silicone resins, are used as polymers.
Claim 4
Dependent Claim
31 words
Moulding compositions as claimed in claim 1, wherein carbon fibres with tensile strengths of from 150 to 350 kp/mm.sup. 2 and E-moduli of from 18,000 to 40,000 kp/mm 2 are used.
Claim 5
Dependent Claim
31 words
Moulding compositions as claimed in claim 1, wherein they contain 20 to 30% by weight of a carbon fibre/potassium titanate whisker mixture, based on the complete mixture of the three components.
Claim 6
Dependent Claim
101 words
Moulding compositions containing 60 to 90% by weight of a thermoplastic or thermosetting polymer or a mixture thereof, 5 to 30% by weight of carbon fibres with an average fibre length of from 200 to 1,000 μm and an average fibre diameter of from 6 to 10 μm and 5 to 30% by weight of potassium titanate whiskers of the formula K.sub.2 Ti.sub.6 O.sub.13, with an average fibre length of from 5 to 10 μm and an average fibre diameter of from 0.10 to 0.15 μm, the carbon fibres and potassium titanate whiskers being in a ratio by weight of 1:2.
Claim 7
Dependent Claim
101 words
Moulding compositions containing 60 to 90% by weight of a thermoplastic or thermosetting polymer or a mixture thereof, 5 to 30% by weight of carbon fibres with an average fibre length of from 200 to 1,000 μm and an average fibre diameter of from 6 to 10 μm and 5 to 30% by weight of potassium titanate whiskers of the formula K.sub.2 Ti.sub.6 O.sub.13, with an average fibre length of from 5 to 10 μm and an average fibre diameter of from 0.10 to 0.15 μm, the carbon fibres and potassium titanate whiskers being in a ratio by weight of 1:2.
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) | 1980-02-22 | 1980-08-23 | 1981-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-22 | 1984-08-23 | 1985-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-22 | 1988-08-23 | 1989-02-22 | $7700.00 | Window Closed / Lapsed |