Rohm and Haas Company

John A Dupont

Stanley A Greenfield

Walter Kooch

Joseph D Scott

Coating compositions which contain a mildew-controlling amount of an isothiazolone are stabilized against chemical decomposition of the isothiazolone by the addition of formaldehyde or a compound which releases formaldehyde under basic conditions.

Formaldehyde stabilized coating compositions

A method of coating marine structures including marine vessel hulls is disclosed, the method comprising painting the surfaces of the structure to be exposed to fouling conditions in salt water including sea water and brackish water, with a paint containing certain 3-isothiazolones in an amount to control marine plant and animal life such as algae, hydroids, and barnacles.

Prevention of fouling of marine structures such as boat hulls

Coating compositions which contain a mildew controlling amount of an isothiazolone are stabilized against chemical decomposition of the isothiazolone by the addition of a metallic compound. Among the compounds which can be used are the acetates, carbonates, chlorides, bromides, nitrates, sulfates, phosphates, and oxides of cadmium, cobalt, copper, lead, manganese, mercury, nickel, silver and zinc.

Growing community of inventors

Glenside, PA, United States of America

John A Dupont