Marine organisms, preventing attack

WOOD PRESERVATIVE. A material applied to wood to prevent its destruction by fungi, wood-boring insects, marine borers and fire. A common characteristic of these materials is toxicity to those organisms that attack wood, or in the case of fire retardants the ability to control combustion in terms defined by the Underwriters Laboratory. In addition, a satisfactory wood preservative must aiso (a) be capable of penetrating wood, (bi remain in the wood for extended periods withonl losing its effectiveness due to chemical breakdown, (c) be harmless to humans and animals, (d) be noncorrosive and. (e) be available in quantity at a reasonable cost, Foi certain uses, the preservative may be required to be colorless, odorless, nonswellmg and paintable. 

In marine tests conducted with specimens treated as described previously, TBTMA-MMA was found effective in preventing attack by marine organisms (23) for over 12 months. These results confirm observations reported earlier (3, 4). The untreated control specimens were largely destroyed by limnoria and teredine borers, while specimens treated with PCPMA-MMA and PCBMA-MMA already showed signs of incipient attack. (These tests are being continued.)... 

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