Invention Application
- Patent Title: NEW ROOFING TILE WITH ENHANCED SURFACE DURABILITY AND PROCESSES FOR MANUFACTURING THE SAME
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Application No.: PCT/IB2007/000934Application Date: 2007-02-13
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Publication No.: WO2007096773A3Publication Date: 2007-08-30
- Inventor: DRECHSLER, Andreas , KLEIN, Jürgen , YZIQUEL, Florence , CHEN, Jeffrey , FOURDRIN, Emmanuel
- Applicant: LAFARGE ROOFING GMBH , DRECHSLER, Andreas , KLEIN, Jürgen , YZIQUEL, Florence , CHEN, Jeffrey , FOURDRIN, Emmanuel
- Applicant Address: Rembrücker Strasse 50 63150 Heusenstamm DE
- Assignee: LAFARGE ROOFING GMBH,DRECHSLER, Andreas,KLEIN, Jürgen,YZIQUEL, Florence,CHEN, Jeffrey,FOURDRIN, Emmanuel
- Current Assignee: LAFARGE ROOFING GMBH,DRECHSLER, Andreas,KLEIN, Jürgen,YZIQUEL, Florence,CHEN, Jeffrey,FOURDRIN, Emmanuel
- Current Assignee Address: Rembrücker Strasse 50 63150 Heusenstamm DE
- Agency: CABINET, HIRSCH
- Priority: EP06290304.2 20060223
- Main IPC: E04D1/04
- IPC: E04D1/04 ; E04D1/16 ; C04B28/06 ; C04B41/50 ; C04B41/65
Abstract:
The invention provides a roofing tile comprising: (a) a substrate; and (b) a coating disposed on said substrate, said coating resulting from hydration and hardening of a mixture comprising a hydraulic binder, said hydraulic binder comprising at least 60% by weight of a source of calcium aluminate and no more than 1% by weight of sulfate. The invention also provides methods for making the tile. Durability, acid resistance and freeze-thraw resistance are enhanced due to formation of a dense layer of hydrated alumina (AH3) gel that fills the pores at the surface exposed to environmental impact.
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