US5049237A
Expired / Lapsed
US
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Layered silicates and water-resistant articles made therefrom
Assignee: Armacell Enterprise GmbH and Co KG
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Filing: 1989-10-30
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Granted: 1991-09-17
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Expires: 2009-10-30
Abstract
Abstract Disclosed are flocced mineral materials which may be utilized to prepare high temperature resistant, water resistant articles. These materials are prepared by utilizing, as a starting material, a gellable layered swelled silicate that has an average charge per structural unit that ranges from about -0.4 to -1 and which contains interstitial cations which promote swelling with a source of at least one species of multiamine derived cations.
Inventors
- 👤 Walter J. Bohrn
- 👤 Richard A. Brubaker
- 👤 Shelly N. Garman
- 👤 Lewis K. Hosfeld
- 👤 Kenneth K. Ko
- 👤 Thomas M. Tymon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:37
CPC Classifications
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; D; D21; D21H; D21H13/00; D21H13/36; D21H13/38; D21H13/44; Y; Y10; Y10S; Y10S106/00; Y10S106/03; Y10S277/00; Y10S277/934; Y10S428/00; Y10S428/902; Y10S428/92; Y10T; Y10T428/00; Y10T428/25; Y10T428/251; Y10T428/259; Y10T428/31504; Y10T428/31721; Y10T442/00; Y10T442/20; Y10T442/2926; Y10T442/2992; Y10T442/60; Y10T442/699
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
54 words
A flocced, 2:1 layered silicate composition which comprises a swelled layered silicate floc, the said silicate being selected from mica and vermiculite and having an average charge per structural unit that ranges from about -0.4 to about -1, said silicate containing at least some interstitial cations that consist essentially of: a cationic diamine compound.
Claim 2
Dependent Claim
54 words
A flocced, 2:1 layered silicate composition which comprises a swelled layered silicate floc, the said silicate being selected from mica and vermiculite and having an average charge per structural unit that ranges from about -0.4 to about -1, said silicate containing at least some interstitial cations that consist essentially of: a cationic diamine compound.
Claim 3
Dependent Claim
107 words
A composition as described in claim 1 wherein the cationic diamine compound has the formula: (R.sup.3).sub.3 N-(CX.sub.2).sub.n -N(R.sup.3).sub.3.sup.+2 wherein (1) each R is independently selected from hydrogen, a C 1 -C 8 saturated or unsaturated, straight or branched, chain alkyl group, or an aryl group, with the proviso that there be no more than one aryl group on each nitrogen, (2) each X is independently selected from hydrogen, an alkyl group or an aryl group and (3) n represents an integer from 2 to 15, with the option that, when n is 3 or more, the CX 2 groups may form ringed moieties which may be aromatic.
Claim 4
Dependent Claim
45 words
The composition of claim 1 prepared with a dispersion of a swelled layered silicate which contained exchangeable interstitial ions, and was contacted with the cationic diamine to exchange at least some of the exchangeable interstitial ions with the cationic diamine to thereby flocculate the silicate.
Claim 5
Dependent Claim
10 words
The composition of claim 1 wherein the silicate is vermiculite.
Claim 6
Dependent Claim
12 words
A composition as described in claim 1 which also contains polybenzimidazole fiber.
Claim 7
Dependent Claim
14 words
A composition as described in claim 1 wherein the layered silicate is a mica.
Claim 8
Dependent Claim
8 words
The composition of claim 1 which is paper.
Claim 9
Dependent Claim
10 words
The composition of claim 1 which is a dried film.
Claim 10
Dependent Claim
10 words
A composition as described in claim 1 also containing fiber.
Claim 11
Dependent Claim
13 words
A composition as described in claim 9 wherein the fiber includes polybenzimidazole fiber.
Claim 12
Dependent Claim
55 words
A composition as described in claim 1 wherein the cationic diamine compound has the formula: ##STR2## wherein (1) each R 1 can independently be either hydrogen or a C 1 -C 8 saturated or unsaturated, straight or branched, chain alkyl group, and (2) R 2 is a saturated, or unsaturated linear or branched hydrocarbon moiety.
Claim 13
Dependent Claim
23 words
A composition as described in claim 11 wherein each R 1 is hydrogen, and R 2 has from 1 to 6 carbon atoms.
Claim 14
Dependent Claim
23 words
A composition as described in claim 11 wherein each R 1 is hydrogen and R 2 has from 6 to 18 carbon atoms.
References Cited (Backward Citations)
US4707298A
Cited
US4762643A
Cited
US4746403A
Cited
US4800041A
Cited
US4775586A
Cited
US4851021A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-16 | 1995-03-18 | 1995-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-16 | 1999-03-18 | 1999-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-16 | 2003-03-18 | 2003-09-17 | $7700.00 | Window Closed / Lapsed |