The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 30, 1990
Filed:
Jun. 09, 1988
Vincent J Castelli, Severna Park, MD (US);
William L Yeager, Queen Anne, MD (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
Objects which are designed to be submerged in a marine environment are prcted from fouling for an extended period of time by the use of elastomeric based covering materials which are characterized by a constant delivery rate of the incorporated organometallic polymer toxicant from the formulation. The formulation consists essentially of, by weight, from about 44% to about 85% of elastomeric material selected from the group consisting of neoprene (polychloroprene) rubber, natural rubber, and EPD (ethylene-propylene-diene) rubber; from about 7% to about 25% of selected fillers, antioxidants, accelerators, pigments, and other processing compounds, and; from about 1% to about 48% of organometallic polymer containing pendant group tri-n-butyltin selected from the group consisting of poly (tri-n-butyltin methyacrylate-co-tri-n-propyltin methyacrylate-co-methyl methacrylate 1:1:1 mole ratio, poly (tri-n-butyltin methacrylate-co-methyl methacrylate) 1:1 mole ratio, tri-n-butyltin ester of poly (methyl vinyl ether-co-maleic acid) 1:1 mole ratio and tri-n-butyltin ester of poly methacrylic acid cross-lined with divinylbenzene.