US4078941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High bulking calcined clay pigments and methods of making the same
Assignee: Georgia Kaolin Co
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Filing: 1976-12-06
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Granted: 1978-03-14
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Expires: 1996-12-06
Abstract
Abstract This invention provides a high bulking clay consisting essentially of selectively flocculated ultra fine particles of clay coated with a member from the group consisting of polyfunctional amines and long chain amines.
Inventors
- 👤 Wayne M. Bundy
- 👤 Thomas D. Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:21
CPC Classifications
C; C09; C09C; C09C1/00; C09C1/40; C09C1/42; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/80; C01P2006/00; C01P2006/60
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
38 words
A high bulking clay consisting essentially of selectively flocculated ultra fine particles of clay coated with sufficient amount of a member from the group consisting of polyfunctional amines and long chain amines to create voids among the particles.
Claim 2
Dependent Claim
38 words
A high bulking clay consisting essentially of selectively flocculated ultra fine particles of clay coated with sufficient amount of a member from the group consisting of polyfunctional amines and long chain amines to create voids among the particles.
Claim 3
Dependent Claim
27 words
A high bulking clay as claimed in claim 1 wherein the ultra fine particles have been selectively flocculated in the presence of low molecular weight organic flocculants.
Claim 4
Dependent Claim
20 words
A high bulking clay as claimed in claim 1 in which the selective flocculant has a molecular weight below 1,000,000.
Claim 5
Dependent Claim
21 words
A high bulking clay as claimed in claim 1 wherein the selective flocculant is a mixture of polyamine and citric acid.
Claim 6
Independent Claim
68 words
The method of producing a high bulking clay comprising the steps of: a. selecting an ultra fine particle size kaolinite fraction, b. flocculating said ultra fine particle size kaolinite fraction in the presence of a member selected from the group consisting of polyfunctional amines and long chain amines in sufficient amount to create voids among the particles when dried, and c. recovering and drying the flocculated treated kaolinite.
Claim 7
Independent Claim
68 words
The method of producing a high bulking clay comprising the steps of: a. selecting an ultra fine particle size kaolinite fraction, b. flocculating said ultra fine particle size kaolinite fraction in the presence of a member selected from the group consisting of polyfunctional amines and long chain amines in sufficient amount to create voids among the particles when dried, and c. recovering and drying the flocculated treated kaolinite.
Claim 8
Dependent Claim
19 words
The method as claimed in claim 5 wherein the kaolinite is flocculated by a low molecular weight organic flocculant.
Claim 9
Dependent Claim
19 words
The method as claimed in claim 6 in which the organic flocculant has a molecular weight less than 1,000,000.
Claim 10
Dependent Claim
19 words
The method as claimed in claim 5 wherein the selective flocculant is a mixture of polyamine and citric acid.
Claim 11
Dependent Claim
13 words
The method as claimed in claim 5 wherein the kaolinite recovered is calcined.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-13 | 1981-09-12 | 1982-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-13 | 1985-09-12 | 1986-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-13 | 1989-09-12 | 1990-03-14 | $7700.00 | Window Closed / Lapsed |