Environmental Engineering Reference
In-Depth Information
the paints manufactured
distributed by JPMA regular members, supporting
members or nonmember companies. This is the first source of official and
historical information on TBT substitutes commercially used in Japan. Con-
sumers are able to learn what biocides are in different types of commercial
paints. The List has been revised several times since it was first compiled
in 2004. In this work, the present status of the antifouling systems used in
Japan, in terms of the biocides they contain and their combinations in paint
products, was investigated using the latest version of the List.
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2
TBT Substitutes in Japan
2.1
Biocides in Antifouling Paint Products
The List comprises information on the name, color and type of the antifouling
system, its CAS number, its chemical name, and whether it is manufactured
in Japan or by other manufacturers, but it excludes data on the amount
produced, utilization rates and disposal methods, etc. According to the List,
a total of 380 paint products made by ten companies are registered. Figure 1
shows the percentage of each company based on the number of products.
Four companies (A, B, C, D) produce about 75% of the total in terms of the
number of products.
Every commercial product is classified into one of the types of antifoul-
ing systems on the List. The antifouling systems have been classified into 12
types (Table 1), according to whether or not they contain a biocide and which
Fig. 1
Number of commercial products per company
