Hydraulic fixing agent and method for reducing the cohesion of a layer of bonded fixing agent
US6998012B2 · kind B2 · utility
23Cited by
0References
17Claims
0Family size
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Key dates
| Filing date | Nov 19, 2003 |
| Grant date | Feb 14, 2006 |
| Priority date | — |
| Expiry date | Jan 20, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1111
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Hydraulic fixing agent that is based on Portland cement, a sulphate and aluminum component that is usual in this system, and optionally other additives. This is characterized in that, according to DIN 18156 (Part 2, Sec. 5.2.2.2, 5.2.2.3a) and 5.2.2.4), the hydraulic fixing agent has (1) an adhesive pull strength of at least approximately 0.15 N/mm2 when acted upon by water for 40 hours and (2) an adhesive pull strength of at most approximately 0.10 N/mmyy2 when acted upon by an aqueous sulphate solution and/or an aqueous solution of an aluminum salt, each of which has a pH value of 12.5, for a period of 40 hours.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.