US4010307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating of paper, cardboard and the like and composition
Assignee: Rhone Progil SA
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Filing: 1974-11-13
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Granted: 1977-03-01
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Expires: 1994-11-13
Abstract
Abstract A paper or cardboard coating composition comprising an aqueous dispersion containing binder and pigment in which 5-30 percent by weight of the pigment are particles dimensioned within the range of 0.05-0.3 microns of a non-film forming synthetic polymer and in which 70-95 percent by weight of the pigment is calcium carbonate.
Inventors
- 👤 Pierre Canard
- 👤 Albert Levy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:34
CPC Classifications
D; D21; D21H; D21H19/00; D21H19/36; D21H19/38; D21H19/42; C; C09; C09C; C09C1/00; C09C1/40; C09C1/42; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C09C1/02; C09C1/021; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/254; Y10T428/258; Y10T428/31504; Y10T428/31725; Y10T428/31765; Y10T428/31768; Y10T428/31772; Y10T428/31775; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31902; Y10T428/31906; Y10T428/31971; Y10T428/31975; Y10T428/31993
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
139 words
A composition for coating paper, cardboard and the like, consisting essentially of an aqueous dispersion of a binder and a pigment in which 70 to 95% by weight of the pigment is calcium carbonate particles having a size within the range of 0.6 to 2 microns and 5 to 30% by weight of the pigment comprises particles of a non-filmogenic synthetic polymer which is insoluble in the binder, the particles of non-filmogenic synthetic polymer being dimensioned within the range of 0.05 to 0.30 microns in which the binder is selected from the group consisting of starches, proteins, casein, polyvinyl alcohol, styrene-butadiene copolymers, alkyl acrylate - styrene copolymers, alkyl acrylate - vinyl acetate copolymers and vinyl acetate homopolymers, and in which the non-filmogenic synthetic polymer is selected from the group consisting of aromatic polyvinyl compounds, polyolefins, polyhaloolefins, polyesters and polysulphones.
Claim 2
Dependent Claim
139 words
A composition for coating paper, cardboard and the like, consisting essentially of an aqueous dispersion of a binder and a pigment in which 70 to 95% by weight of the pigment is calcium carbonate particles having a size within the range of 0.6 to 2 microns and 5 to 30% by weight of the pigment comprises particles of a non-filmogenic synthetic polymer which is insoluble in the binder, the particles of non-filmogenic synthetic polymer being dimensioned within the range of 0.05 to 0.30 microns in which the binder is selected from the group consisting of starches, proteins, casein, polyvinyl alcohol, styrene-butadiene copolymers, alkyl acrylate - styrene copolymers, alkyl acrylate - vinyl acetate copolymers and vinyl acetate homopolymers, and in which the non-filmogenic synthetic polymer is selected from the group consisting of aromatic polyvinyl compounds, polyolefins, polyhaloolefins, polyesters and polysulphones.
Claim 3
Dependent Claim
21 words
A composition as claimed in claim 1 containing 6 to 25 parts by weight of binder per 100 parts of pigment.
Claim 4
Dependent Claim
34 words
A process for coating papers and cardboard, in which there is applied to at least one of the surfaces of the paper or cardboard a layer of the aqueous composition claimed in claim 1.
Claim 5
Dependent Claim
11 words
Paper and cardboard coated with the composition claimed in claim 1.
Claim 6
Dependent Claim
10 words
Paper and cardboard coated by the process of claim 3.
References Cited (Backward Citations)
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US3645952A
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US3494878A
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US3573236A
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US3779800A
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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) | 1980-02-29 | 1980-08-30 | 1981-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-29 | 1984-08-30 | 1985-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-29 | 1988-08-30 | 1989-03-01 | $7700.00 | Window Closed / Lapsed |