Substituted naphthalocyanines and their use

Details Substituted naphthalocyanines and their use Substituted naphthalocyanines and their use

C - Chemistry, Metallurgy

09

B

31/105, 260/196,

C09B 47/04 (2006.01) B41M 5/30 (2006.01) C07C 255/49 (2006.01) C09B 47/067 (2006.01) C09K 19/32 (2006.01) G11B 7/248 (2006.01)

Patent

CA 2030392

6-17839/- Substituted naphthalocyanines and their use Abstract Compounds of the formula I Image (I), in which R is the group Image and M is two H or is Cu or Ni, R1 is -OH, -Cl, -Br, C1-C30alkoxy or -OC(O)R2, m is an integer from 2 to 6 and n is a number from 1 to 20, and R2 is C1-C20alkyl, C2-C20alkenyl, cyclopentyl, cyclohexyl or C6-C10aryl or C6-C10arylmethyl which is unsubstituted or substituted by Cl-C18alkyl. The compounds are dyes and IR absorbers and can be used for optical information storage systems employing diode lasers.

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