US4990405A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-ply composites and sheets of epoxy and flocced 2:1 layered silicates
Assignee: Armacell Enterprise GmbH and Co KG
•
Filing: 1989-04-14
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Granted: 1991-02-05
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Expires: 2009-04-14
Abstract
Abstract Sheets and laminated composites are described which are prepared with epoxy and flocculated vermiculite and mica dispersions. Processes and procedures are also described to obtain film and sheet materials from the flocculated silicate and epoxy dispersions.
Inventors
- 👤 Walter J. Bohrn
- 👤 Shelly N. Garman
- 👤 Thomas M. Tymon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:52
CPC Classifications
D; D21; D21H; D21H13/00; D21H13/36; D21H13/38; D21H13/44; C; C01; C01B; C01B33/00; C01B33/20; C01B33/36; C01B33/38; C01B33/44; C01B35/00; C01B35/08; C01B35/10; C04; C04B; C04B14/00; C04B14/02; C04B14/04; C04B14/20; C04B14/206; C04B35/00; C04B35/622; C04B35/62227; C04B35/62231; C04B35/6224; C04B41/00; H; H01; H01B; H01B3/00; H01B3/02; H01B3/04; D21H13/10; D21H13/40; D21H17/00; D21H17/03; D21H17/05; D21H17/07; D21H17/20; D21H17/33; D21H17/63; D21H17/66; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/0353; H05K1/0373; Y; Y10; Y10S; Y10S428/00; Y10S428/918; Y10T; Y10T428/00; Y10T428/25; Y10T428/251; Y10T428/259; Y10T428/31504; Y10T428/31511; Y10T428/31515
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
48 words
A sheet comprising a film of a silicate floc and an epoxy, said film being a flocculated codispersion of the epoxy and a 2:1 layered silicate which is selected from the group consisting of mica and vermiculite, the film also having a coating that also contains an epoxy.
Claim 2
Dependent Claim
48 words
A sheet comprising a film of a silicate floc and an epoxy, said film being a flocculated codispersion of the epoxy and a 2:1 layered silicate which is selected from the group consisting of mica and vermiculite, the film also having a coating that also contains an epoxy.
Claim 3
Dependent Claim
36 words
A sheet as described in claim 1 wherein a curing agent is present in both the coating and the sheet, and both the epoxy in the coating and the epoxy in the film have been cured.
Claim 4
Dependent Claim
30 words
A sheet as described in claim 2 wherein further, a cure accelerator is also present in (1) the coating, (2) the film, or (3) both the coating and the film.
Claim 5
Dependent Claim
19 words
A sheet as described in claim 2 wherein the 2:1 layered silicate has interstitial ions that are diamine cations.
Claim 6
Dependent Claim
24 words
A sheet as described in claim 4 wherein the diamine cations are selected from the group consisting of 1,8-octanediammonium, 1,9-nonanediammonium, 1,10-decanediammonium, 1,11-undecanediammonium, and 1,12-dodecanediammonium.
Claim 7
Dependent Claim
27 words
A sheet as described in claim 1 wherein the 2:1 layered silicate has interstitial cations selected from the group consisting of 1,8-octanediammonium, 1,9-nonanediammonium, 1,10-decanediammonium, 1,11-undecanediammonium, and 1,12-dodecanediammonium.
Claim 8
Dependent Claim
20 words
A sheet as described in claim 1 wherein at least one sheet has the epoxy as an internal resin binder.
Claim 9
Dependent Claim
19 words
A sheet as described in claim 1 wherein the 2:1 layered silicate has interstitial ions that are diamine cations.
Claim 10
Dependent Claim
14 words
A sheet as described in claim 8 wherein the diamine cations are diammonium cations.
Claim 11
Dependent Claim
15 words
A sheet as described in claim 8 wherein the diamine cations contain an --NCN-- moiety.
Claim 12
Dependent Claim
13 words
A sheet as described in claim 8 wherein the diamine cation is nonanediammonium.
Claim 13
Dependent Claim
14 words
A sheet as described in claim 1 wherein the film is a semitransparent film.
Claim 14
Dependent Claim
15 words
A sheet as described in claim 1 which is in a board or a laminate.
Claim 15
Dependent Claim
44 words
A multiple-layered laminate comprising two or more sheets, which are films of a silicate floc and a cured epoxy, and further are a flocculated co-dispersion of the epoxy and a 2:1 layered silicate which is selected from the group consisting of mica and vermiculite.
Claim 16
Dependent Claim
44 words
A multiple-layered laminate comprising two or more sheets, which are films of a silicate floc and a cured epoxy, and further are a flocculated co-dispersion of the epoxy and a 2:1 layered silicate which is selected from the group consisting of mica and vermiculite.
Claim 17
Dependent Claim
28 words
A laminate as described in claim 14 wherein the co-dispersion also contained either (1) an epoxy curing agent or (2) an epoxy curing agent and a cure accelerator.
Claim 18
Dependent Claim
24 words
A laminate as described in claim 15 wherein the 2:1 layered silicate in at least one sheet has interstitial cations that are a diamine.
Claim 19
Dependent Claim
40 words
A laminate as described in claim 14 wherein at least one sheet has been given an external application of an epoxy, a curing agent, and a cure accelerator, or an epoxy and an epoxy curing agent, and was then pressed.
Claim 20
Dependent Claim
24 words
A laminate as described in claim 14 wherein the 2:1 layered silicate in at least one sheet has interstitial cations that are a diamine.
Claim 21
Dependent Claim
24 words
A laminate as described in claim 18 wherein the diamine cations are selected from the group consisting of 1,8-octanediammonium, 1,9-nonanediammonium, 1,10-decanediammonium, 1,11-undecanediammonium, and 1,12-dodecanediammonium.
Claim 22
Dependent Claim
17 words
A laminate as described in claim 14 wherein each sheet also has an external epoxy resin coating.
Claim 23
Dependent Claim
42 words
A laminate as described in claim 14 wherein each film had a topical coating of either (1) an epoxy curing agent, or (2) an epoxy curing agent and an epoxy cure accelerator; which was applied before curing the epoxy in the film.
Claim 24
Dependent Claim
10 words
The laminate of claim 21 wherein curing included heat pressing.
Claim 25
Dependent Claim
54 words
A sheet comprising a film of a silicate floc and an epoxy, said film being a flocculated codispersion of the epoxy and a 2:1 layered silicate which is selected from the group consisting of mica and vermiculite, the film also having an epoxy curing agent which, before curing, was topically applied to the film.
Claim 26
Dependent Claim
54 words
A sheet comprising a film of a silicate floc and an epoxy, said film being a flocculated codispersion of the epoxy and a 2:1 layered silicate which is selected from the group consisting of mica and vermiculite, the film also having an epoxy curing agent which, before curing, was topically applied to the film.
Claim 27
Dependent Claim
13 words
The sheet of claim 23 which was heat pressed to cure the epoxy.
Claim 28
Dependent Claim
17 words
The sheet of claim 23 wherein the 2:1 layered silicate has interstitial cations that are a diamine.
Claim 29
Dependent Claim
22 words
The sheet of claim 25 wherein the diamine cations are selected from the group consisting of 1,8-octanediammonium, 1,9-nonanediammonium, 1,10-dodecanediammonium, 1,11-undecanediammonium, and 1,12-dodecanediammonium.
Claim 30
Dependent Claim
10 words
The sheet of claim 23 wherein the film is semitransparent.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-04 | 1994-08-06 | 1995-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-04 | 1998-08-06 | 1999-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-04 | 2002-08-06 | 2003-02-05 | $7700.00 | Window Closed / Lapsed |