... (5) T. P. Hilditch, “The Chemical Constitution of ... and Rachlin of Hofmann-LaRoche, Inc., Nutlev, I\i. J., for calling our attention to US Patent 2,934,570,i"b ... Bntara Chemicals, General Aniline and Film Corporation, New York, contributed generous quantities of 2-butyn-1,4-diol and ...