USA As Represented by Secretary of the Navy

Bernard R Appleman

Stephen D Rodgers

A polyisobutylene based acoustically transparent, camouflage antifouling nt for coating rubber substrates without adversely affecting the chemical stability and sound absorbing characteristics of such substrates. The composition essentially comprises, by weight, non-volatile ingredients including from about 2% to about 23% polyisobutylene polymer of molecular weight from about 81,000 to 99,000; from about 23% to about 29% rosin; from about 45% to about 57% tributyltin flouride and from about 9% to about 11% pigment.

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Gaithersburg, MD, United States of America

Bernard R Appleman