Dow Global Technolgoies LLC

Rohm and Haas Company

Dow Global Technology Inc.

Srdjan Kisin

Eric Gustave Lundquist

Michael Damian Bowe

Veera Nelliappan

Yannick Saint-Gerard

Timothy E Clayfield

Deborah A Schutter

Janah Cecelia Szewczyk

Ludovic Harelle

The present invention provides a self-collapsing, moisture curable one component polyurethane foam (1K PU) composition from moisture curable polyurethane prepolymers and to methods of making weather resistant barriers and formed in place gaskets therefrom. The foam compositions are packed under pressure with a blowing agent. In the methods, the foams are applied to gaps in the exterior (sheathing) of a building under construction and collapse on cure to enable application an aqueous weather barrier coating thereover within an hour. The foams also cure when applied on or adjacent a structure to form a foam gasket that enables installation of additional structural elements over or adjacent the foam gasket without bowing or damage to the structure treated.

Weather-resistive barriers from self collapsing polyurethane foams

Apply a one component spray polyurethane foam formulation through a dispensing accessory that has a removable nozzle by independently feeding the one component spray polyurethane foam formulation and a supplementary propellant into the dispensing accessory so that they combine in the removable nozzle and are expelled from the removable nozzle at a flow rate that is greater than 40 grams of foam formulation per 15 seconds.

One component spray polyurethane application

The instant invention provides a thermoplastic composition, method of producing the same, and articles made therefrom. The thermoplastic composition according to present invention comprises the melt blending product of: (a) from 10 to 75 percent by weight of a continuous phase, based on the total weight of the thermoplastic composition, wherein said continuous phase comprises one or more thermoplastic polymers; and (b) from 25 to 90 percent by weight of a dispersed phase comprising one or more core/shell polymer particles, based on the total weight of the thermoplastic composition, wherein said one or more core/shell polymer particles comprise a crosslinked elastomer core and a thermoplastic shell and wherein said core/shell polymer has an average particle size diameter in the range of from 70 to 10,000 nm.

Thermoplastic composition, method of producing the same, and articles made therefrom

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Horgen, Switzerland

Srdjan Kisin