Covestro LLC

Covestro Deutschland Ag

Derick Henderson

David P Zielinski

Michael K Jeffries

Lyubov K Gindin

Hans Georg Grablowitz

Makoto Nakao

Philip Jones

Tina Kasardo

Mark Conner

Emery Yuhas

Ronald Konitsney

Yanan Chen

Stephanie Goldfein

Mark Connor

The present invention provides an aqueous polyurethane dispersion (PUD) comprising an amorphous polyester having a glass transition temperature (T) as determined by differential scanning calorimetry of less than &#x2212;30&#xb0; C.; wherein the aqueous polyurethane dispersion (PUD) has a glass transition temperature (T) as determined by differential scanning calorimetry (DSC) of 0&#xb0; C. to 20&#xb0; C. and a hard block content of greater than 50%. Coatings, adhesives, sealants, paints, primers and topcoats, made from the inventive aqueous polyurethane dispersion (PUD) pass detergent resistance testing according to the American Architectural Manufacturers Association's standard, AAMA 615-13, have a pencil hardness according to ASTM D3363 of at least 3H, and are particularly suited for use on low surface energy substrates such as vinyl and other surfaces including floors, windows, doors, window frames, door frames, window shutters, railing, gates, pillars, arbors, pergolas, trellises, gazebos, posts, fencing, pipes and fittings, wire and cable insulation, automobile components, credit cards, and siding.

One component polyurethane dispersion for vinyl windows and other substrates

The present invention provides a polyurethane coating composition comprising a fluorosurfactant, a silane adhesion promoter, and a silane modified polyisocyanate, wherein the composition has excellent substrate wet-out and adhesion under direct wet-on-hot and cold spray applications. The coating composition is particularly well suited to use with polyurethane pultrusion composites.

Polyurethane coatings for direct application to polyurethane pultrusion

The present invention provides for coating proppants, such as sand, with a resin-containing dispersion which dramatically reduces the dust generated during handling, for example in hydraulic fracturing, by protecting the surface of the particle from abrasion and degradation. Such resin-containing dispersion coated-sand may also reduce the wear on metal parts used in transporting such proppants.

Proppant sand coating for dust reduction

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Crafton, PA, United States of America

Derick Henderson