PREPARED TAR

Brand Owner Address Description
BARRETT BARRETT COMPANY, THE NEW YORK, N.Y. PREPARED TAR, PITCH, AND ASPHALT FOR ROOFING CONSTUCTION AND PREPARED ROOFINGS IN WHICH THE WATERPROOFING AGENT IS TAR, ASPHALT, OR OTHER BITUMEN;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. Di- and polyamines of the diphenylmethane series are prepared by a) mixing a first portion of aniline with an acid catalyst, b) mixing a second portion of aniline with formaldehyde, and c) mixing and reacting the mixtures prepared in each of steps a) and b). The diamines produced by this process may then be phosgenated to produce the corresponding di-/polyisocyanate.