Catalytic hydrogenation of bis-(4-aminophenyl)methane (I) gives bis-(4-aminocyclohexyl) -methane (II).1•2 This dialicyclic diamine should exist in solidified at room temperature to a soft, white, crystalline paste. Compound trans-ciscis trans cis-cis 5-(3',4'-Methylenedi-216 148-149 138-139 200-202 oxyphenyl-2,4-Piperic Isopiperic Isocha vicie Cha vicie pentadienoic acid Cinnamalacetic acid 165-166
A protective paint has been prepared from rubber which can be used commercially. The chief features of the new paint are: (1) good adhesion to metals; (2) resistance to acids, alkalies, corrosive gases, and corrosive chemicals in general; (3) low permeability to moisture, salt solutions, salt spray, etc.; (4) the film is tough and can be bent without injury at sub-zero temperatures; (5) the film does not flake when cut, and rust spreads very slowly from an exposed area. On account of its unusual set of properties, this paint should have a wide range of usefulness, particularly in chemical and other plants where metal parts are subjected to excessive corrosive conditions.
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