Corrosion inhibitor for cement compositions
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United States of America Patent
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-
Mar 12, 2002
Grant Date -
N/A
app pub date -
Jan 2, 2001
filing date -
Jun 23, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An anti-corrosion agent for use with a cementitious composition which is to be reinforced, comprising one or more species selected from a group consisting of alkyldiamines represented by the general formula RHN--(CH.sub.2)n-NH.sub.2 (in which R is an alkyl having C.sub.8-22 atoms, and n is an integer of 1-5) and alkylamines represented by the general formula R--NH.sub.2 (in which R is an alkyl having C.sub.8-22 atoms). The agents give good anti-corrosion performance which does not decline with time and exposure to the elements to the same extent as is the case with conventional anti-corrosion agents.
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