Patent US4010307A successfully refreshed from Google Patents.
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
2026-11-09 17:34
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)
US3281267A
Cited
US3527729A
Cited
US3645952A
Cited
US3494878A
Cited
US3573236A
Cited
US3779800A
Cited
US3506474A
Cited
US3706589A
Cited
US3772073A
Cited
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 |