US4421815A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous composite materials and the production and use thereof
Assignee: Imperial Chemical Industries Ltd
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Filing: 1981-07-07
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Granted: 1983-12-20
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Expires: 2001-07-07
Abstract
Abstract A fibrous composite material in the form of a three-dimensional block comprising a mass of combustible fibres and lamellae of a layer mineral, a method for the manufacture of the fibrous composite materials by applying lamellae of a layer mineral, preferably from a suspension, to combustible fibres and forming the fibres and layer mineral into a three-dimensional block, and use of the fibrous composite materials as insulating materials and for the fire protection of substrates.
Inventors
- 👤 Peter J. Briggs
- 👤 Kevin McAloon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:27
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B18/00; C04B18/04; C04B18/18; C04B18/24; C04B18/28; C04B26/00; C04B26/02; C04B30/00; C04B30/02; D; D21; D21H; D21H13/00; D21H13/36; D21H13/38; D21H13/40; D21H13/44; D21H27/00; D21H27/30; D21H5/00; D21H5/12; D21H5/18; B; B27; B27N; B27N3/00; B27N3/04; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/91; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24826; Y10T428/25; Y10T428/251; Y10T428/29; Y10T428/2913; Y10T428/2927; Y10T428/2933; Y10T428/2938; Y10T428/294; Y10T428/2958; Y10T428/2964; Y10T428/298; Y10T442/00; Y10T442/20; Y10T442/2221; Y10T442/223; Y10T442/25; Y10T442/2615; Y10T442/2623; Y10T442/2762; Y10T442/277; Y10T442/30; Y10T442/3049; Y10T442/40; Y10T442/419; Y10T442/50; Y10T442/60; Y10T442/603; Y10T442/604; Y10T442/637
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
59 words
A fibrous composite material in the form of a three-dimensional block comprising a nonwoven mass of combustible fibers and vermiculite lamellae obtained by chemical delamination of vermiculite and having a thickness of less than 0.5 micron, the fibers comprising at least 15% by weight of the block and being bonded together by the vermiculite at their points of contact.
Claim 2
Dependent Claim
59 words
A fibrous composite material in the form of a three-dimensional block comprising a nonwoven mass of combustible fibers and vermiculite lamellae obtained by chemical delamination of vermiculite and having a thickness of less than 0.5 micron, the fibers comprising at least 15% by weight of the block and being bonded together by the vermiculite at their points of contact.
Claim 3
Dependent Claim
22 words
A material as claimed in claim 1 wherein the amount of the fibres is at least 20% by weight of the block.
Claim 4
Dependent Claim
21 words
A material as claimed in claim 1 wherein the amount of vermiculite is at least 20% by weight of the block.
Claim 5
Dependent Claim
16 words
A material as claimed in claim 1, 2, or 3 wherein the fibres are cellulose fibres.
Claim 6
Dependent Claim
15 words
A material as claimed in claim 1 wherein the mass of fibers comprises individual fibers.
Claim 7
Dependent Claim
18 words
A material as claimed in claim 1 wherein the mass of fibers comprises clusters or agglomerates of fibers.
Claim 8
Dependent Claim
17 words
A material as claimed in claim 6 wherein the clusters or agglomerates of fibres are wood chips.
Claim 9
Dependent Claim
17 words
A material as claimed in claim 6 wherein the clusters or agglomerates of fibres are wood sawdust.
Claim 10
Dependent Claim
21 words
A material as claimed in claim 3 wherein the amount of vermiculite is up to 100% by weight of the fibres
Claim 11
Dependent Claim
14 words
A material as claimed in claim 1 which additionally comprises a water stability improver.
Claim 12
Dependent Claim
15 words
A material as claimed in claim 10 wherein the water stability improver is magnesium oxide.
Claim 13
Independent Claim
79 words
A method for the manufacture of a fibrous composite material in the form of a three-dimensional block which comprises applying a suspension of vermiculite lamellae, obtained by chemical delamination of vermiculite and having a thickness of less than 0.5 micron, to a nonwoven mass of combustible fibers and forming the fibers and lamellae into a three-dimensional block such that the fibers are coated with the lamellae and are bonded together by the vermiculite lamellae at their points of contact.
Claim 14
Independent Claim
79 words
A method for the manufacture of a fibrous composite material in the form of a three-dimensional block which comprises applying a suspension of vermiculite lamellae, obtained by chemical delamination of vermiculite and having a thickness of less than 0.5 micron, to a nonwoven mass of combustible fibers and forming the fibers and lamellae into a three-dimensional block such that the fibers are coated with the lamellae and are bonded together by the vermiculite lamellae at their points of contact.
Claim 15
Dependent Claim
14 words
A method as claimed in claim 12 wherein the suspension is an aqueous suspension.
Claim 16
Dependent Claim
28 words
A method as claimed in claim 12 or 13 which comprises forming a suspension of the combustible fibers and vermiculite lamellae and forming the suspension into the block.
Claim 17
Dependent Claim
20 words
A method as claimed in claim 12 wherein the suspension is gasified before the suspension is formed into a block.
Claim 18
Dependent Claim
14 words
An insulating material formed of the fibrous composite material as claimed in claim 1.
Claim 19
Dependent Claim
18 words
A fire-resistant composite laminate comprising a substrate layer and the fibrous material layer as claimed in claim 1.
References Cited (Backward Citations)
US3434917A
Cited
US3540892A
Cited
GB1404001A
Cited
GB1498966A
Cited
US4269628A
Cited
US4366204A
Cited
US4366203A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-19 | 1987-06-20 | 1987-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-19 | 1991-06-20 | 1991-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-19 | 1995-06-20 | 1995-12-20 | $7700.00 | Window Closed / Lapsed |