M&t Chemicals, Inc.

Howard H Leiner

Melvin H Gitlitz

David B Russell

Abe Berger

Mo A Khuddus

John L Gardon

Dennis R Gelarden

Emily C Bossert

Lee E Koepke

A novel polymeric binder for use in an antifouling paint includes an acrylic or methacrylic ester monomer having selected substituted aryl or arylalkyl substituent groups in the ester moiety so that the ester is hydrolyzable at a suitable rate in seawater, and a copolymerizable ethylenically unsaturated monomer unit.

Erodible ship-bottom paints for control of marine fouling

A film-forming, water insoluble seawater erodible antifouling paint is described which is characterized by including a hydrolyzable organosilyl acrylate copolymer therein.

A novel polymeric binder for an antifouling paint includes greater than 2.5 to less than 25 mole percent of a unit from a tributyltin acrylate or methacrylate monomer group, an acrylic or methacrylic ester monomer unit having selected substituent groups in the ester moiety so that the ester is hydrolyzable at a suitable rate in seawater, and a copolymerizable ethylenically unsaturated monomer unit. The presence of the hydrolyzable ester group in the polymer binder of the present invention enables the paint to erode at a desired rate in seawater even with the low tin content in the polymer, thereby providing a desired low level of tin in solution and exposing a fresh paint surface periodically.

Erodible terpolymer from tributyl tin acrylate or methacrylate and

A portion of the tin compounds conventionally employed to cure polymer compositions containing hydroxyl and isocyanate groups can be replaced by salts or chelated coordination complexes of divalent copper, zinc, nickel, iron, cobalt or vanadium without any substantial decrease in cure rate or solvent resistance of the cured coating.

Catalyst composition and curable polymer compositions containing same

Protective and decorative coatings for metal are prepared using aqueous polymer compositions consisting essentially of a thermosetting vinyl or acrylic polymer which has been polymerized in the presence of a preformed, crosslinked, elastomeric copolymer. The rate at which the monomers of the thermosetting polymer are added to the reaction mixture is substantially equal to the rate of reaction of these monomers to form the thermosetting polymer. This is believed to result in the formation of minute emulsified particles containing a core of the elastomeric copolymer surrounded by a layer of the thermosetting polymer. The thermosetting polymer contains pendant hydroxyl groups and a latent, heat-activated crosslinking agent.

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Cranbury, NJ, United States of America

Howard H Leiner