Covestro LLC

Bayer Materialscience, LLC

Kevan Hudson

Richard R Roesler

Kurt C Frisch, Jr

Dinesh Pethiyagoda

Craig E Jansen

Michael K Jeffries

Jeffrey F Dormish

Jay A Johnston

Adam Miller

The present invention provides a polyaspartic composition comprising a reaction product of a polyamine and a Michael addition receptor reacted in the presence of a catalyst comprising a phenolic compound, with the proviso that the phenolic compound is not a phenol which is substituted with tert-butyl groups in both ortho positions to the oxygen. Suitable phenolic compounds include phenols, phenolic aldehydes, alkylphenols, benzenediols, cashew nut oil, and combinations thereof. Coatings, adhesives, sealants, composites, castings, and films comprising a polyurea composition may be made by reacting a polyisocyanate with the inventive polyaspartic composition. In particular, floor coatings made with the inventive polyaspartic composition have an elongated work time and a short walk-on time compared to current floor coatings.

Work time to walk-on time ratio by adding a phenolic catalyst to polyaspartic flooring formulations

Disclosed are coated particles, such as proppants, processes for their preparation and methods for using such particles, such as in a hydraulic fracturing process. The coated particles include a coating that includes a crystalline or semicrystalline polyester/polyurethane having a decrystallization temperature of at least 35&#xb0; C.

Coated particles and methods for their manufacture and use

A two-component adhesive, sealant, or coating composition containing (i) a first component containing a portion of an alkoxysilane-functional urethane and water; and (ii) a second component containing the remaining portion of the alkoxysilane-functional urethane and a catalyst. The alkoxysilane-functional urethane includes the reaction product of (a) the reaction product of a hydroxy functional compound and a polyisocyanate, that contains isocyanate groups; with (b) an amine functional aspartate. The composition is used in a method of bonding a first substrate to a second substrate. The method includes (a) combining component i) and component ii) to form a mixture, applying a coating of the mixture to at least one surface of the first substrate or the second substrate, and contacting a surface of the first substrate with a surface of the second substrate. The method is used make an assembly.

Two-component silylated polyurethane adhesive, sealant, and coating compositions

An adhesive, sealant or coating composition that includes:

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Clinton, PA, United States of America

Kevan Hudson