US4472478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous composite materials and the production and use thereof
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1983-10-24
•
Granted: 1984-09-18
•
Expires: 2003-10-24
Abstract
Abstract A fibrous composite material of essentially two-dimensional form in the form of individual fibres, sheets or layers comprising combustible fibres and lamellae of a layer mineral of size below 50 microns, a method for the manufacture of the fibrous composite materials by applying lamellae of a layer mineral to the fibres preferably from suspension followed by removal of the liquid phase of the suspension, and use of the fibrous composite materials for the fire-protection of substrates.
Inventors
- 👤 Peter J. Briggs
- 👤 Kevin McAloon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:25
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: 17
Claim 1
Independent Claim
51 words
A fibrous composite material consisting essentially of at least 15% by weight non-combustible fibers, and at least 20% by weight lamallae of chemically delaminated vermiculite, the lamallae having a thickness of less than 0.5 micron and an aspect ratio of at least 10, the fibers being bonded together by the vermiculite.
Claim 2
Dependent Claim
51 words
A fibrous composite material consisting essentially of at least 15% by weight non-combustible fibers, and at least 20% by weight lamallae of chemically delaminated vermiculite, the lamallae having a thickness of less than 0.5 micron and an aspect ratio of at least 10, the fibers being bonded together by the vermiculite.
Claim 3
Dependent Claim
23 words
A fibrous composite material as claimed in claim 1 wherein said fibres are present in the amount of at least 20% by weight.
Claim 4
Dependent Claim
13 words
A material as claimed in claim 1 wherein the fibres are glass fibres.
Claim 5
Dependent Claim
24 words
A material as claimed in claim 1 wherein the loading of the layer mineral is up to 100% by weight based on the fibres.
Claim 6
Dependent Claim
20 words
A material as claimed in claim 1 wherein the vermiculite lamellae are substantially all of maximum dimension below 50 microns.
Claim 7
Dependent Claim
21 words
A material as claimed in claim 1 wherein the fibres are present in the form of a layer of fibrous material.
Claim 8
Dependent Claim
27 words
A material as claimed in claim 1 in the form of a block of randomly oriented fibres bonded together at their points of contact by the vermiculite.
Claim 9
Dependent Claim
15 words
A material as claimed in claim 7 wherein the fibres are coated with said vermiculite.
Claim 10
Dependent Claim
13 words
A material as claimed in claim 1 which additionally contains a water-stability improver.
Claim 11
Dependent Claim
15 words
A material as claimed in claim 9 wherein the water stability improver is magnesium oxide.
Claim 12
Dependent Claim
22 words
A material as claimed in claim 1 wherein the chemically delaminated vermiculite is present in the form of a dry, rigid foam.
Claim 13
Dependent Claim
18 words
A material as claimed in claim 1 in which the vermiculite lamallae thickness is less than 0.05 micron.
Claim 14
Dependent Claim
18 words
A material as claimed in claim 12 in which the vermiculite lamallae thickness is less than 0.005 micron.
Claim 15
Dependent Claim
20 words
A material as claimed in claim 1 in which the vermiculite lamallae have an aspect ratio of at least 100.
Claim 16
Dependent Claim
20 words
A material as claimed in claim 14 in which the vermiculite lamallae have an aspect ratio of at least 1000.
Claim 17
Dependent Claim
27 words
A material as claimed in claim 1 in which the vermiculite lamallae are less than 0.005 micron thick and have an aspect ratio of at least 1000.
References Cited (Backward Citations)
US2481391A
Cited
US2782129A
Cited
US3434917A
Cited
US3556819A
Cited
US3540892A
Cited
US3779860A
Cited
US3916057A
Cited
US4271228A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |