Patent US5219927A successfully refreshed from Google Patents.
US5219927A
Expired / Lapsed
US
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Process for protecting and consolidating lapideous materials
Assignee: Syensqo Specialty Polymers Italy SpA
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Filing: 1991-12-26
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Granted: 1993-06-15
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Expires: 2011-12-26
Abstract
Abstract The surface of lapideous materials, marble, sandstone, tiles, cement conglomerates and articles and structures manufactured therefrom are consolidated and protected against atmospherical and polluting agents by superficially applicating a mix composed of: a) a vinylidene fluoride elastomeric copolymer comprising 55-85% by mols of vinylidene fluoride, 15-45% by mols of hexafluoropropene and 0-30% by mols of tetrafluoroethylene; b) polytetrafluoroethylene or a copolymer of tetrafluoroethylene containing up to 12% by mols of other perfluorinated monomers.
Inventors
- 👤 Giovanni Moggi
- 👤 Desiderata Ingoglia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:41
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C04B41/48; C04B41/4838; C04B41/4842; C04B41/4846; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C09D127/16; C04B2111/00; C04B2111/20; C04B2111/23; C08; C08L; C08L27/00; C08L27/02; C08L27/12; C08L27/18; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/4935
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
86 words
A process for consolidating and protecting lapideous materials, marble, sandstone, tiles, cement conglomerates and articles and structures manufactured from such materials against the degrading action exerted by atmospheric agents and pollutants, comprising the step of applying the surface of the material to be consolidated and protected a mix composed of: a) an elastomeric vinylidene fluoride copolymer comprising 55-85% moles of vinylidene fluoride, 15-45% moles of hexafluoropropylene and 0-30% moles of tetrafluoroethylene; b) polytetrafluoroethylene or a tetrafluoroethylene copolymer containing up to 12% moles of other perfluorinated monomers.
Claim 2
Dependent Claim
86 words
A process for consolidating and protecting lapideous materials, marble, sandstone, tiles, cement conglomerates and articles and structures manufactured from such materials against the degrading action exerted by atmospheric agents and pollutants, comprising the step of applying the surface of the material to be consolidated and protected a mix composed of: a) an elastomeric vinylidene fluoride copolymer comprising 55-85% moles of vinylidene fluoride, 15-45% moles of hexafluoropropylene and 0-30% moles of tetrafluoroethylene; b) polytetrafluoroethylene or a tetrafluoroethylene copolymer containing up to 12% moles of other perfluorinated monomers.
Claim 3
Dependent Claim
31 words
The process of claim 1, wherein components (a) and (b) are mixed in the form of a water dispersion prior to application of the mix to the surface of the material.
Claim 4
Dependent Claim
43 words
The process of claim 1, wherein component (a) is dissolved in an organic solvent and component (b) is dispersed in the resulting solution in the form of a fine powder prior to the application of the mix to the surface of the material.
Claim 5
Dependent Claim
23 words
The process of claim 1, wherein the weight ratio on dry basis between component (a) and component (b) ranges from 40:1 to 1:1.
Claim 6
Dependent Claim
14 words
The process of claim 4, wherein said weight ratio ranges from 10:1 to 3:1.
Claim 7
Dependent Claim
28 words
Lapideous materials, marble, sandstone, tiles and cement conglomerates consolidated and protected against the degrading action exerted by atmospheric agents and pollutants through the process described in claim 1.
References Cited (Backward Citations)
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Cited
EP0058393A2
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EP0159268A2
Cited
EP0192494A1
Cited
US4764431A
Cited
EP0374804A2
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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) | 1996-06-14 | 1996-12-14 | 1997-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-06-14 | 2000-12-14 | 2001-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-06-14 | 2004-12-14 | 2005-06-15 | $7700.00 | Window Closed / Lapsed |