Composition for improving freeze/thaw durability of masonry containing fatty acid-based efflorescence control agents
CA 2287585 A1 · Owner: Hazrati, Kati · Inventors: Hazrati, Kati; Kerkar, Awdhoot V.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition for improving the freeze thaw durability of masonry concrete comprising (i) an alkylaryl polyether alcohol having the formula R~(OCH2CH2)xOH, wherein R is a C4-C5 alkyl group (preferably branched) ~ represents a phenol group, and "X" represents an integer in the range of 3-70; and (ii) at least one efflorescence control admixture such as a C8-C30 , fatty, acid or its salt or derivative. An exemplary masonry concrete composition of the invention comprises an alkylaryl polyether alcohol having the formula R-~-(OCH2CH2)XOH, wherein R is a C4-C8 alkyl group ~ represents a phenol, group, and "X" represents an integer in the range of 3-70; the composition when wet, having …
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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
- Filed October 25, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 25, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.