Dow Global Technolgoies LLC

Huang Wu

Steven Douglas Jons

David H Bank

Jodi M Mecca

Abhishek Roy

Mou Paul

Tina L Arrowood

Steven Rosenberg

Jason A Reese

Thomas J Parsons

Matthew T Bishop

Robert C Cieslinski

David D Hawn

Larry Dotson

Yinglong Chen

Kevin W Light

Annette Baker

J Cody Clinton

Anand S Badami

Larry D Dotson

The present disclosure provides for an automated spray system () to produce an elastomeric pad on a railroad tie. The automated spray system () includes a two-component spray system () for spraying a two-component reaction mixture to produce the elastomeric pad on the railroad tie. The automated spray system further includes a gantry system () having girder () that supports the spray applicator.

Automated spray system to produce an elastomeric pad on a railroad tie

A thin film composite polyamide membrane having a porous support and a thin film polyamide layer comprising a reaction product of m-phenylene diamine (mPD) and trimesoyl chloride (TMC), characterized by the thin film polyamide layer having a critical strain value of less than 10%. In another embodiment, the thin film polyamide layer has a modulus of greater than 0.75 (GPa). In yet another embodiment, the thin film polyamide layer has an equilibrium swelling value of at least 45%. In another embodiment, the thin film polyamide layer has a thickness of at least 230 nm.

Composite polyamide membrane with improved structure

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Midland, MI, United States of America

Huang Wu