US4264372A
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US
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Calcium carbonate containing kaolin clay additive
Assignee: GEORGIA MARBLE HOLDINGS Corp
•
Filing: 1979-10-25
•
Granted: 1981-04-28
•
Expires: 1999-10-25
Abstract
Abstract A calcium carbonate composition contains a minor amount of kaolin clay, said kaolin clay being present in an amount sufficient to improve the dispersibility of the calcium carbonate, particularly in rubber matrices.
Inventors
- 👤 Matthew D. Graves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:05
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/02; C09C1/021; B; B82; B82Y; B82Y30/00; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; C08K9/00; C08K9/02; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2004/62; C01P2004/64; C01P2006/00; C01P2006/22
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
28 words
A calcium carbonate composition consisting essentially of calcium carbonate and from about 0.1 to 5% by weight, based on the weight of the calcium carbonate, of kaolin clay.
Claim 2
Dependent Claim
28 words
A calcium carbonate composition consisting essentially of calcium carbonate and from about 0.1 to 5% by weight, based on the weight of the calcium carbonate, of kaolin clay.
Claim 3
Dependent Claim
23 words
The composition of claim 1 wherein the calcium carbonate is a member selected from the group consisting of natural and synthetic calcium carbonate.
Claim 4
Dependent Claim
26 words
The composition of claim 1 wherein the source of the calcium carbonate is a member selected from the group consisting of chalk, marble, and common limestone.
Claim 5
Dependent Claim
13 words
The composition of claim 1 wherein the kaolin clay has an acidic pH.
Claim 6
Dependent Claim
16 words
The composition of claim 4 wherein the pH of the kaolin clay is 6.5 or less.
Claim 7
Dependent Claim
21 words
The composition of claim 4 wherein the pH of the kaolin clay is within the range from about 4 to 6.5.
Claim 8
Dependent Claim
19 words
The composition of claim 4 wherein 70% or more of the kaolin clay particles are smaller than 10 microns.
Claim 9
Dependent Claim
21 words
The composition of claim 7 wherein the pH of the kaolin clay is within the range from about 4 to 6.5.
Claim 10
Dependent Claim
25 words
The composition of claim 1 wherein the kaolin clay comprises from about 1 to 3% by weight, based on the weight of the calcium carbonate.
Claim 11
Dependent Claim
22 words
The composition of claim 1 wherein the kaolin clay comprises about 2% by weight, based on the weight of the calcium carbonate.
Claim 12
Dependent Claim
13 words
The composition of claim 1 wherein the kaolin clay has an acidic pH.
Claim 13
Dependent Claim
16 words
The composition of claim 11 wherein the pH of the kaolin clay is 6.5 or less.
Claim 14
Dependent Claim
19 words
The composition of claim 11 wherein 70% or more of the kaolin clay particles are smaller than 10 microns.
Claim 15
Dependent Claim
25 words
The composition of claim 13 wherein the source of the calcium carbonate is a member selected from the group consisting of marble and common limestone.
Claim 16
Dependent Claim
25 words
The composition of claim 14 wherein the kaolin clay comprises from about 1 to 3% by weight, based on the weight of the calcium carbonate.
Claim 17
Dependent Claim
21 words
The composition of claim 15 wherein the pH of the kaolin clay is within the range from about 4 to 6.5.
Claim 18
Dependent Claim
14 words
The composition of claim 16 wherein the source of the calcium carbonate is marble.
Claim 19
Dependent Claim
22 words
The composition of claim 17 wherein the kaolin clay comprises about 2% by weight, based on the weight of the calcium carbonate.
Claim 20
Dependent Claim
15 words
The composition of claim 16 wherein the source of the calcium carbonate is common limestone.
Claim 21
Dependent Claim
22 words
The composition of claim 19 wherein the kaolin clay comprises about 2% by weight based on the weight of the calcium carbonate.
Claim 22
Dependent Claim
26 words
An aqueous suspension of dispersed calcium carbonate which contains from about 0.1to 5% by weight, based on the weight of the calcium carbonate, of kaolin clay.
Claim 23
Dependent Claim
26 words
An aqueous suspension of dispersed calcium carbonate which contains from about 0.1to 5% by weight, based on the weight of the calcium carbonate, of kaolin clay.
Claim 24
Dependent Claim
23 words
The aqueous suspension of claim 21 wherein the concentration of calcium carbonate is between about 20 and 80% by weight of the suspension.
Claim 25
Dependent Claim
31 words
The aqueous suspension of claim 21 wherein the calcium carbonate is in a finely divided state and is a member selected from the group consisting of natural and synthetic calcium carbonate.
Claim 26
Dependent Claim
36 words
The aqueous suspension of claim 21 wherein the calcium carbonate is in a finely divided state and the source of the calcium carbonate is a member selected from the group consisting of marble and common limestone.
Claim 27
Dependent Claim
28 words
The aqueous suspension of claim 24 wherein the kaolin clay has an acidic pH and 70% or more of the kaolin clay particles are smaller than 10 microns.
Claim 28
Dependent Claim
23 words
The aqueous suspension of claim 25 wherein the concentration of calcium carbonate is between about 20 and 80% by weight of the suspension.
Claim 29
Dependent Claim
24 words
The aqueous suspension of claim 26 wherein the concentration of kaolin clay is from about 1 to 3% by weight of the calcium carbon.
Claim 30
Dependent Claim
21 words
The aqueous suspension of claim 27 wherein the concentration of kaolin clay is about 2% by weight of the calcium carbonate.
Claim 31
Dependent Claim
39 words
In a rubber latex wherein calcium carbonate is the extender and/or color pigment, the improvement consisting essentially of the addition of from about 0.1 to 5% by weight, based on the weight of the calcium carbonate, of kaolin clay.
Claim 32
Dependent Claim
39 words
In a rubber latex wherein calcium carbonate is the extender and/or color pigment, the improvement consisting essentially of the addition of from about 0.1 to 5% by weight, based on the weight of the calcium carbonate, of kaolin clay.
Claim 33
Dependent Claim
24 words
The rubber latex of claim 29 wherein the calcium carbonate is a member selected from the group consisting of natural and synthetic calcium carbonate.
Claim 34
Dependent Claim
26 words
The rubber latex of claim 29 wherein the source of the calcium carbonate is a member selected from the group consisting of marble and common limestone.
Claim 35
Dependent Claim
28 words
The rubber latex of claim 31 wherein the kaolin clay has an acidic pH and 70% or more of the kaolin clay particles are smaller than 10 microns.
Claim 36
Dependent Claim
26 words
The rubber latex of claim 32 wherein the kaolin clay comprises from about 1 to 3% by weight, based on the weight of the calcium carbonate.
Claim 37
Dependent Claim
23 words
The rubber latex of claim 33 wherein the kaolin clay comprises about 2% by weight, based on the weight of the calcium carbonate.
Claim 38
Dependent Claim
45 words
A process of treating calcium carbonate to improve the dispersibility of the calcium carbonate in aqueous and organic media which consists essentially of mixing with calcium carbonate from about 0.1 to 5% by weight, based on the weight of the calcium carbonate, of kaolin clay.
Claim 39
Dependent Claim
45 words
A process of treating calcium carbonate to improve the dispersibility of the calcium carbonate in aqueous and organic media which consists essentially of mixing with calcium carbonate from about 0.1 to 5% by weight, based on the weight of the calcium carbonate, of kaolin clay.
Claim 40
Dependent Claim
25 words
The process of claim 35 wherein the kaolin clay comprises from about 1 to 3% by weight, based on the weight of the calcium carbonate.
Claim 41
Dependent Claim
13 words
The process of claim 35 wherein the kaolin clay has an acidic pH.
Claim 42
Dependent Claim
19 words
The process of claim 37 wherein 70% or more of the kaolin clay particles are smaller than 10 microns.
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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) | 1984-04-27 | 1984-10-27 | 1985-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-27 | 1988-10-27 | 1989-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-27 | 1992-10-27 | 1993-04-28 | $7700.00 | Window Closed / Lapsed |