US4562109A
Expired / Lapsed
US
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Crack resistant coating for masonry structures and process for applying same
Assignee: Eliokem SAS
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Filing: 1984-08-31
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Granted: 1985-12-31
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Expires: 2004-08-31
Abstract
Abstract Masonry structures are susceptible to cracking due to distortion caused by movement of their foundation, vibration, and/or drying out subsequent to the construction of the structure. Such cracking often occurs after the structure has been painted. This results in the crack being transmitted through the coating of paint. Upon repainting of the masonry structure new cracks often develop and are transmitted through the paint coating within a short period of time. The invention discloses a crack resistant coating for masonry structures and a process for applying it, wherein the coating comprises: (1) a crack absorbing layer which is contiguous to the masonry structure which contains beads which are essentially spherical and which are bound by a resin binder, and (2) a conventional coating layer which is contiguous to and covers the crack absorbing layer.
Inventors
- 👤 John D. Harvey
- 👤 Andre V. Gindre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:30
CPC Classifications
E; E04; E04G; E04G23/00; E04G23/02; C; C04; C04B; C04B26/00; C04B26/02; C04B41/00; C04B41/45; C04B41/4582; C04B41/52; Y; Y10; Y10T; Y10T428/00; Y10T428/20; Y10T428/249921; Y10T428/249953; Y10T428/249971; Y10T428/249972; Y10T428/249974; Y10T428/25; Y10T428/252; Y10T428/254
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
91 words
A crack resistant coating for masonry structures subject to cracking comprising: (1) a crack absorbing layer which is contiguous to the masonry structure which contains beads which are essentially spherical and which are bound by a resin binder, and (2) a conventional coating layer which is contiguous to and covers the crack absorbing layer wherein the resin binder exhibits sufficient flexibility to allow a degree of rolling action between the beads, thereby absorbing cracks forming in the masonry structure and preventing the transmission of the cracks to the conventional coating layer.
Claim 2
Dependent Claim
91 words
A crack resistant coating for masonry structures subject to cracking comprising: (1) a crack absorbing layer which is contiguous to the masonry structure which contains beads which are essentially spherical and which are bound by a resin binder, and (2) a conventional coating layer which is contiguous to and covers the crack absorbing layer wherein the resin binder exhibits sufficient flexibility to allow a degree of rolling action between the beads, thereby absorbing cracks forming in the masonry structure and preventing the transmission of the cracks to the conventional coating layer.
Claim 3
Dependent Claim
24 words
A crack resistant coating as specified in claim 1 wherein said beads have a diameter of from about 1 mm to about 6 mm.
Claim 4
Dependent Claim
17 words
A crack resistant coating as specified in claim 2 wherein said resin binder further comprises a plasticizer.
Claim 5
Dependent Claim
16 words
A crack resistant coating as specified in claim 3 wherein said beads are cellular glass beads.
Claim 6
Dependent Claim
21 words
A crack resistant coating as specified in claim 4 wherein said crack absorbing layer is about 0.3 to 3 centimeters thick.
Claim 7
Dependent Claim
35 words
A crack resistant coating as specified in claim 5 wherein said crack absorbing layer is from 1 to 2 centimeters thick and wherein said beads have a diameter of from 2 mm to 4 mm.
Claim 8
Dependent Claim
16 words
A crack resistant coating as specified in claim 6 wherein said plasticizer is a chlorinated paraffin.
Claim 9
Dependent Claim
29 words
A crack resistant coating as specified in claim 7 wherein said resin binder is a copolymer of one or more vinyl-substituted aromatic monomers and one or more acrylate monomers.
Claim 10
Dependent Claim
132 words
A process for coating a masonry structure subject to cracking with a crack resistant coating comprising: (1) applying a crack absorbing layer to the masonry structure wherein the crack absorbing layer contains beads which are essentially spherical and which are bound by a resin binder wherein the resin binder is applied as a resin binder solution having a viscosity of from about 0.5 to about 10 poise at 10,000 seconds -1 and a Brookfield viscosity of at least 600 poise at 10 rpm., and (2) applying a conventional coating layer to the crack absorbing layer, wherein the resin binder exhibits sufficient flexibility to allow a degree of rolling action between the beads, thereby absorbing cracks forming in the masonry structure and preventing the transmission of the cracks to the conventional coating layer.
Claim 11
Dependent Claim
132 words
A process for coating a masonry structure subject to cracking with a crack resistant coating comprising: (1) applying a crack absorbing layer to the masonry structure wherein the crack absorbing layer contains beads which are essentially spherical and which are bound by a resin binder wherein the resin binder is applied as a resin binder solution having a viscosity of from about 0.5 to about 10 poise at 10,000 seconds -1 and a Brookfield viscosity of at least 600 poise at 10 rpm., and (2) applying a conventional coating layer to the crack absorbing layer, wherein the resin binder exhibits sufficient flexibility to allow a degree of rolling action between the beads, thereby absorbing cracks forming in the masonry structure and preventing the transmission of the cracks to the conventional coating layer.
Claim 12
Dependent Claim
22 words
A process as specified in claim 9 wherein said beads have a diameter of from about 1 mm to about 6 mm.
Claim 13
Dependent Claim
15 words
A process as specified in claim 10 wherein said resin binder further comprises a plasticizer.
Claim 14
Dependent Claim
14 words
A process as specified in claim 11 wherein said beads are cellular glass beads.
Claim 15
Dependent Claim
21 words
A process as specified in claim 12 wherein the crack absorbing layer applied is from about 0.3 to 3 centimeters thick.
Claim 16
Dependent Claim
34 words
A process as specified in claim 13 wherein the crack absorbing layer applied is from 1 to 2 centimeters thick and wherein said beads have a diameter of from 2 mm to 4 mm.
Claim 17
Dependent Claim
36 words
A process as specified in claim 11 wherein said resin binder solution has a viscosity ranging from 2 to 6 poise at 10,000 seconds -1 and a Brookfield viscosity of about 750 poise at 10 rpm.
Claim 18
Dependent Claim
14 words
A process as specified in claim 15 wherein said beads are cellular glass beads.
Claim 19
Dependent Claim
21 words
A process as specified in claim 16 wherein the crack absorbing layer applied is from about 0.3 to 3 centimeters thick.
Claim 20
Dependent Claim
20 words
A process as specified in claim 17 wherein said beads have a diameter of from 2 mm to 4 mm.
Claim 21
Dependent Claim
20 words
A process as specified in claim 18 wherein the crack absorbing layer applied is from 1 to 2 centimeters thick.
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) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |