Admixtures and method for accelerating the setting of portland cement compositions
CA 1078415 A · Owner: Sika Finanz Ag · Inventors: Schutz, Raymond J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of and compositions for accelerating the setting time of portland cement compositions are disclosed. Certain admixtures, comprising water-soluble carbonates and .alpha.hydroxy carbonyl compounds, are employed as accelerators. Preferred accelerators further comprise water-soluble organic compounds having a plurality of hydroxyl groups. The concentration of admixture relative to cement necessary to achieve acceleration depends upon the identity of the admixture the water-cement, ratio, and the amount and type of aggregate in the composition among other factors.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted May 27, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 27, 1997.
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Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.