Patent US4002590A successfully refreshed from Google Patents.
US4002590A
Expired / Lapsed
US
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Coating composition for thick coating
Assignee: Kikusui Chemical Industries Co Ltd
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Filing: 1974-11-22
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Granted: 1977-01-11
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Expires: 1994-11-22
Abstract
Abstract A coating composition for thick coating prepared by adding an aggregate to a coating liquid containing 5 to 40% by weight as SiO2 of a coloidal silica and 3 to 40% by weight of dissolved and/or finely dispersed organic polymer, having an SiO 2/M2O mole ratio (in which M is a monovalent alkali metal atom) of at least 7, and having a viscosity lower than 100 c.p. at 20 DEG C when kept in the sealed state at 50 DEG C for 10 days.
Inventors
- 👤 Akitoshi Yoshida
- 👤 Masaharu Kosaka
- 👤 Shigeki Inoue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:22
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/24; C09; C09D; C09D1/00; C09D1/02; C09D1/04; C04B2111/00; C04B2111/00474; C04B2111/00482
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
A coating composition for thick coating in an amount of from 1 to 20 kg/m 2 comprising a coating liquid containing water, aqueous silica sol, an aqueous dispersion of butyl acrylate-methyl acrylate-styrene copolymer and an aggregate, wherein said coating liquid contains from 5 to 40% by weight as SiO 2 of colloidal silica, 3 to 40% by weight of said copolymer, a SiO 2 /M 2 O mole ratio, wherein M is an alkali metal atom selected from the group consisting of Na, K, and Li, of from 7 to 2000 and has a viscosity lower than 100 c.p. at 20° C when kept in a sealed state at 50° C for 10 days.
Claim 2
Dependent Claim
114 words
A coating composition for thick coating in an amount of from 1 to 20 kg/m 2 comprising a coating liquid containing water, aqueous silica sol, an aqueous dispersion of butyl acrylate-methyl acrylate-styrene copolymer and an aggregate, wherein said coating liquid contains from 5 to 40% by weight as SiO 2 of colloidal silica, 3 to 40% by weight of said copolymer, a SiO 2 /M 2 O mole ratio, wherein M is an alkali metal atom selected from the group consisting of Na, K, and Li, of from 7 to 2000 and has a viscosity lower than 100 c.p. at 20° C when kept in a sealed state at 50° C for 10 days.
Claim 3
Dependent Claim
24 words
A coating composition according to claim 1 wherein the coaing liquid contains from 7 to 25% by weight of SiO 2 of colloidal silica.
Claim 4
Dependent Claim
61 words
A coating compositon according to claim 1 wherein said coating liquid contains 10% by weight as SiO 2 of colloidal silica, 4.4% by weight of butyl acrylate-methyl acrylate-styrene copolymer, an SiO 2 /Na 2 O mole ratio of 120 and has a viscosity of 80 c.p. at 20° C when kept in a sealed state at 50° C for 10 days.
References Cited (Backward Citations)
US3895956A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |