Ppg Industries Ohio, Inc.

Maurizio Ballarino

Scott J Moravek

Davina J Schwartzmiller

Adam Bradley Powell

Steven Bowles

Stefano Gianellini

Matteo Bertoli

Kurt Gordon Olson

Terri Lynn Ziegler

Michela Cagliani

Francesca Brunetti

Giorgio Cardone

Giuseppina Polino

Aldo Di Carlo

Steven E Bowles

The present invention is directed to curable compositions comprising: (a) a polyene; (b) a polythiol, present in an amount greater than 10 percent by weight based on the total weight of components (a) and (b) in the curable composition; and (c) a catalytic component consisting essentially of: (i) a metal compound; and (ii) a compound different from (i) that catalyzes an addition reaction between an ethylenically unsaturated compound and a thiol. The catalytic composition is essentially free of vanadium compounds. In the curable composition, either (1) both components (i) and (ii) of the catalytic composition (c) are added as a single package to (a) and/or (b); or (2) component (i) and/or (ii) of the catalytic composition (c) is added in separate packages to (a) and/or (b) of the curable composition. The present invention is further drawn to coated articles and methods of extending pot life of a curable composition.

Catalytic compositions and thiolene-based compositions with extended pot life

The present invention is directed to catalytic compositions and to curable compositions containing them. Catalytic compositions of the present invention consist essentially of: (i) a metal compound; and (ii) a compound different from (i) that catalyzes an addition reaction between an ethylenically unsaturated compound and a thiol, wherein said catalytic composition is essentially free of vanadium compounds. Curable compositions according to the present invention comprise: (a) a polyene, (b) a polythiol, and (c) a catalytic component, which consists of the afore-mentioned catalytic composition.

The present invention is directed to catalytic compositions and to curable compositions containing them. Catalytic compositions of the present invention typically comprise: (i) a reactive compound comprising at least one group selected from acid-functional groups and/or groups that may be converted to acid-functional groups; (ii) a metal compound; and (iii) a compound different from (i) and (ii) that catalyzes an addition reaction between an ethylenically unsaturated compound and a thiol. Curable compositions according to the present invention comprise: (a) a polyene, (b) a polythiol, and (c) the afore-mentioned catalytic composition.

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Milan, Italy

Maurizio Ballarino