Benzodifuranes

C - Chemistry – Metallurgy – 07 – D

Patent

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260/361, 8/52

C07D 493/04 (2006.01) C07C 45/46 (2006.01) C07C 49/825 (2006.01) C07C 49/84 (2006.01) D06L 3/12 (2006.01)

Patent

CA 1097364

?11343 Abstract of the Disclosure Image wherein R1 represents hydrogen, chlorine, lower alkyl or cyano, and R2 represents cyano, -COOH and the colourless salts and lower alkyl esters thereof, or p-phenyl, process for their production and the use thereof for whitening organic material of high molecular weight, especially polyester, polyvinyl chloride or poly- styrene.

311343

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