Patent US4042412A successfully refreshed from Google Patents.
US4042412A
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US
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High solids content active clay coating formulations and methods for producing and applying the same
Assignee: Moore Business Forms Inc
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Filing: 1975-06-20
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Granted: 1977-08-16
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Expires: 1995-06-20
Abstract
Abstract Disclosed are high solids content bentonite clay coating formulations for use in the production of receiver sheets for carbonless copying systems. The formulations comprise an acid-leached bentonite-type clay and an inactive clayey material such as chalk or a mixture of chalk and kaolin. The formulations are effective for use in the "on machine" blade coating of a paper substrate to more efficiently produce receiver sheets for carbonless copy systems.
Inventors
- 👤 Rodney E. Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:04
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155; B41M5/1555; B28; B28C; B28C1/00; B28C1/003; B28C1/006; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/258
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
71 words
A coatable formulation comprising water, an active bentonite-type clay, an inactive clayey material selected from the group consisting of chalk and mixtures of chalk and kaolin and a binder, said inactive clayey material being present in the formulation in an amount sufficient to provide a total solids content in the formulation of from about 43 to about 60% by weight and a viscosity of from about 700 to about 7,000 cps.
Claim 2
Dependent Claim
71 words
A coatable formulation comprising water, an active bentonite-type clay, an inactive clayey material selected from the group consisting of chalk and mixtures of chalk and kaolin and a binder, said inactive clayey material being present in the formulation in an amount sufficient to provide a total solids content in the formulation of from about 43 to about 60% by weight and a viscosity of from about 700 to about 7,000 cps.
Claim 3
Dependent Claim
13 words
The formulation of claim 1 wherein the chalk is chemically precipitated calcium carbonate.
Claim 4
Dependent Claim
27 words
The formulation of claim 1 wherein the weight ratio of active bentonite clay to inactive clayey material in the formulation ranges from about 10:90 to about 90:10.
Claim 5
Dependent Claim
49 words
The formulation of claim 3 wherein chalk is present in the clayey material in an amount ranging from about 12.5 to 100% by weight and kaolin is present therein in an amount ranging from 0 to about 87.5% by weight, based on the total weight of the clayey material.
Claim 6
Independent Claim
76 words
A method of preparing a high solids content bentonite clay slurry comprising admixing water, an active bentonite-type clay, an inactive clayey material selected from the group consisting of chalk and mixtures of chalk and kaolin and a binder, said inactive clayey material being included in an amount sufficient to present a slurry having a total solids content of from about 43 to about 60% by weight and a viscosity of about 700 to about 7,000 cps.
Claim 7
Independent Claim
76 words
A method of preparing a high solids content bentonite clay slurry comprising admixing water, an active bentonite-type clay, an inactive clayey material selected from the group consisting of chalk and mixtures of chalk and kaolin and a binder, said inactive clayey material being included in an amount sufficient to present a slurry having a total solids content of from about 43 to about 60% by weight and a viscosity of about 700 to about 7,000 cps.
Claim 8
Dependent Claim
46 words
The method of claim 5 wherein the active bentonite-type clay is first slurried with water, the pH of the clay slurry is then adjusted within the range of from about 7 to 8, and then the inactive clayey material is added to the bentonite-type clay slurry.
Claim 9
Dependent Claim
27 words
The method of claim 6 wherein the weight ratio of active bentonite-type clay to inactive clayey material in the slurry ranges from about 10:90 to about 90:10.
Claim 10
Dependent Claim
48 words
The method of claim 7 wherein chalk is present the clayey material in an amount ranging from about 12.5 to 100% by weight and kaolin is present therein in an amount ranging from 0 to about 87.5% by weight, based on the total weight of the clayey material.
Claim 11
Dependent Claim
20 words
The method of claim 6 wherein the slurry of active bentonite-type clay and inactive clayey material is subjected to milling.
Claim 12
Dependent Claim
27 words
The formulation of claim 1 wherein the weight ratio of active bentonite clay to inactive clayey material in the formulation ranges fom about 75:25 to about 55:45.
Claim 13
Dependent Claim
27 words
The method of claim 6 wherein the weight ratio of active bentonite-type clay to inactive clayey material in the slurry ranges from about 75:25 to about 55:45.
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) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |