US5767177A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection mouldable thermosetting composition especially for motor vehicle bodies, method of production and method or recycling
Assignee: Cytec Industries Inc
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Filing: 1994-05-02
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Granted: 1998-06-16
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Expires: 2014-05-02
Abstract
Abstract Thermosetting composition. According to the invention, it comprises approximately, by weight: 33% to 43% of a thermosetting resin; 5% to 15% cellulose fibers; 15% to 21% mineral fillers; 12.5% to 22.5% reinforcement fibers of high mechanical strength.
Inventors
- 👤 Pedro Omente
- 👤 Lionel Landru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:57
CPC Classifications
C; C08; C08L; C08L63/00; C08L63/10; C08J; C08J5/00; C08J5/04; C08J5/047; C08K; C08K13/00; C08K13/04; C08L67/00; C08L67/06; C08L75/00; C08L75/04; C08L75/14; C08L75/16; C08J2363/00; C08J2363/10; C08J2367/00; C08J2367/06
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
44 words
An injection-moldable thermosetting composition characterized by the fact that it comprises, by weight, about: 33% to 43% of a thermosetting resin in the liquid state; 5% to 15% cellulose fibers; 15% to 21% mineral fillers; 12.5% to 22.5% reinforcement fibers of high mechanical strength.
Claim 2
Dependent Claim
44 words
An injection-moldable thermosetting composition characterized by the fact that it comprises, by weight, about: 33% to 43% of a thermosetting resin in the liquid state; 5% to 15% cellulose fibers; 15% to 21% mineral fillers; 12.5% to 22.5% reinforcement fibers of high mechanical strength.
Claim 3
Dependent Claim
11 words
A composition according to claim 1, comprising about 10% cellulose fibers.
Claim 4
Dependent Claim
51 words
A composition according to claim 1, in which the thermosetting resin is selected from the group consisting of polyesters having a maleic base, polyesters having an orthophthalic base, polyesters having an isophthalic base, polyesters having an adipic base, vinyl esters having an urethane base, and vinyl esters having an epoxy base.
Claim 5
Dependent Claim
29 words
A composition according to claim 1, in which the reinforcement fibers are selected at least in part from members of the group consisting of glass, carbon and aramid fibers.
Claim 6
Dependent Claim
28 words
A composition according to claim 1, in which the mineral fillers are selected at least in part, from members of the group consisting of calcium carbonate and alumina.
Claim 7
Dependent Claim
18 words
A composition according to any of claim 1, comprising about 15% to 25% by weight of anti-shrinkage additives.
Claim 8
Dependent Claim
33 words
A composition according to claim 1, comprising about 38% resin, 20% of an anti-shrinkage additive, 0.5% catalyst, 10% cellulose fibers, 18% mineral fillers, 2% of a mold-release agent, and 17.5% of reinforcement fibers.
Claim 9
Dependent Claim
26 words
A composition according to claim 1, in which the reinforcement fibers comprise aramid fibers in an amount of from 1% to 3% of the total weight.
Claim 10
Dependent Claim
51 words
A process for preparing the thermosetting composition of claim 1, from the components thereof, said method comprising the steps of: a) separately mixing the mineral fillers, cellulose fibers and reinforcement fibers as a mixture of solids; and b) impregnating the mixture of solids with the thermosetting resin in the liquid state.
Claim 11
Dependent Claim
32 words
The process of claim 9, wherein the thermosetting composition is burned to form ashes and when the ashes are used as the mixture of solids, in the formation of additional thermosetting composition.
References Cited (Backward Citations)
BE662820A
Cited
DE2256968A1
Cited
US3991005A
Cited
FR2334716A1
Cited
US4067845A
Cited
GB2103639A
Cited
EP0498060A2
Cited
US5231121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-06-15 | 2001-12-15 | 2002-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-15 | 2005-12-15 | 2006-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-15 | 2009-12-15 | 2010-06-16 | $7700.00 | Window Closed / Lapsed |