US4287242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray-coating process
Assignee: Japan Latex Compounding Co Ltd
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Filing: 1979-08-08
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Granted: 1981-09-01
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Expires: 1999-08-08
Abstract
Abstract A spray-coating process which comprises spraying a rubber-asphalt anionic emulsion having a total solid content of 70% by weight or more and a 1-15% by weight aqueous solution of a polyvalent metal salt almost simultaneously by means of separate airless type spraying machines to continuously contact and mix said emulsion with said aqueous solution in the space between the spraying machine and the surface of a substrate to be coated and on the substrate surface, thereby forming a rubber-asphalt solid layer on the substrate surface. By this process, a rubber-asphalt solid layer having a thickness of 4 mm or more and having a water-proof, moisture-proof or gas-proof characteristics can be formed rapidly on the substrate surface.
Inventors
- 👤 Takeshi Monden
- 👤 Yoshiro Shiba
- 👤 Toshihiro Momonaka
- 👤 Shigeru Kobayashi
- 👤 Kazuo Oda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:07
CPC Classifications
C; C09; C09D; C09D195/00; C09D195/005; B; B05; B05D; B05D1/00; B05D1/02; B05D1/34; C08; C08L; C08L95/00; C08L95/005; B05D2401/00; B05D2401/20; C08L11/00; C08L11/02; C08L9/00; C08L9/06
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
86 words
A spray-coating process which comprises spraying a rubber-asphalt anionic emulsion having a total solid content of at least 80% by weight and an aqueous solution containing 1-15% by weight of a polyvalent metal salt almost simultaneously by means of separate airless type spraying machines to continuously contact and mix said emulsion with said aqueous solution in the space between the spraying machine and the surface of a substrate to be coated and on the substrate surface, thereby forming a rubber-asphalt solid layer on the substrate surface.
Claim 2
Dependent Claim
86 words
A spray-coating process which comprises spraying a rubber-asphalt anionic emulsion having a total solid content of at least 80% by weight and an aqueous solution containing 1-15% by weight of a polyvalent metal salt almost simultaneously by means of separate airless type spraying machines to continuously contact and mix said emulsion with said aqueous solution in the space between the spraying machine and the surface of a substrate to be coated and on the substrate surface, thereby forming a rubber-asphalt solid layer on the substrate surface.
Claim 3
Dependent Claim
31 words
A process according to claim 1, wherein the ratio of said aqueous polyvalent metal salt solution to said rubber-asphalt anionic emulsion is in the range of 1/15 to 1/3 by volume.
Claim 4
Dependent Claim
28 words
A process according to claim 1, wherein the rubber in said rubber-asphalt anionic emulsion is natural rubber, styrene-butadiene rubber, butyl rubber, polybutadiene rubber, polyisoprene rubber or chloroprene rubber.
Claim 5
Dependent Claim
21 words
A process according to claim 1, wherein the rubber in said rubber-asphalt anionic emulsion is styrene-butadiene rubber or modified styrene-butadiene rubber.
Claim 6
Dependent Claim
19 words
A process according to claim 1, wherein said rubber-asphalt anionic emulsion has a rubber content of 5-50% by weight.
Claim 7
Dependent Claim
19 words
A process according to claim 1, wherein said polyvalent metal salt is calcium chloride, iron alum or potassium alum.
Claim 8
Dependent Claim
22 words
A process according to claim 1 or 6, wherein said aqueous polyvalent metal salt solution has a concentration of 3-6% by weight.
Claim 9
Dependent Claim
34 words
A process according to claim 1, wherein said rubber-asphalt anionic emulsion is a styrene-butadiene rubber-80-100 straight asphalt emulsion having a solid content of 80% by weight, and said polyvalent metal salt is calcium chloride.
Claim 10
Dependent Claim
41 words
A process according to claim 1 or 2, wherein said rubber-asphalt anionic emulsion is sprayed from one jetting hole and said aqueous solution of polyvalent metal salt is sprayed from two jetting holes placed above and under the first jetting hole.
References Cited (Backward Citations)
US1841076A
Cited
GB815640A
Cited
FR1517381A
Cited
GB1167265A
Cited
CA853642A
Cited
US3667998A
Cited
US3785852A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |