3. They are the only system that can be installed at below freezing
temperatures (258 F/K 4 8 C) without havingt ou se special hardening or catalyst systems.
4. They are the fastest set andcure of all the resins.
5. They are the easiest to pigment and, with the addition of various
types of aggregate, can be aesthetically attractive.
6. They are equally appropriate for maintenance and new construction, and they bond wellt oc oncrete.
The disadvantage of the acrylic coating system is the aromatic odor in indoor
or confinedspaces.
10.7U rethaneC oatings
Monolithic urethane floorings ystems offer the following advantages:
1. They are easy to mixa nd apply using the pour-in-place, selflevel technique.
TABLE 10.10
Resistance of Vinyl Ester and Vinyl Ester Novolac to Selected
Corrodents
Vinyl Ester
Corrodent
Vinyl Ester
Novolac
Acetic acid, glacial
UR
Benzene
RR
Chlorine dioxide
RR
Ethyl alcohol
RR
Hydrochloric acid, 36%
RR
Hydrogen peroxide
RR
Methanol
UR
Methyl ethyl ketone
UU
Motor oil and gasoline
RR
Nitric acid, 40%
UR
Phenol, 5%
RR
Sodium hydroxide, 50%
RR
Sulfuric acid, 75%
RR
Toluene
UR
TriethanolamineR
R
Vinyl toluene
UR
Maximum temperature, 8 F/8 C2 20/104
230/110
R, recommended; U, unsatisfactory.
Source:F rom P. A. Schweitzer.1 998. Encyclopediao fC orrosion Te chnology,N ew
York: Marcel Dekker.
Corrosion of Linings and Coatings
528
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