Monolayer-forming substituted phthalocyanine compounds and method of preparation thereof

Claim 1

The compound Metal-Free Tetrakis (cumylphenoxy) phthalocyanine.

Claim 29

A method for preparing a phthalocyanine of the general formula: ##STR2## wherein R 1 to R 4 are selected from the group consisting of aryloxy, arylthio, alkyloxy and alkylthio and m, n, p, q and r are equal to 0 or 1 with the sum of m, n, p, and q being equal to at least 1; M is transition metal, which comprises the steps of: forming a dimethyl sulfoxide solution of 4-nitrophthalo-nitrile and a reactant selected from the group consisting of aryl or alkylalcohol, aryl or alkyl sulfide and mixtures thereof: slowly admixing anhydrous potassium carbonate into said solution under a nitrogen atmosphere until the reaction is completed; filtering out any undissolved potassium carbonate from the reaction mixture leaving a filtrate comprising a dimethyl sulfoxide solution of an oxy or thio substituted phthalonitride or a mixture thereof; slowly adding said filtrate to rapidly stirred water, forming a suspension; neutralizing said suspension; separating said oxy or thio substituted phthalonitrile; heating said oxy or thio substituted phthalonitrile alone or with a transition metal powder or salt, thereby forming phthalocyanine; separating said phthalocyanine.

Claim 30

A method for preparing a phthalocyanine of the general formula: ##STR2## wherein R 1 to R 4 are selected from the group consisting of aryloxy, arylthio, alkyloxy and alkylthio and m, n, p, q and r are equal to 0 or 1 with the sum of m, n, p, and q being equal to at least 1; M is transition metal, which comprises the steps of: forming a dimethyl sulfoxide solution of 4-nitrophthalo-nitrile and a reactant selected from the group consisting of aryl or alkylalcohol, aryl or alkyl sulfide and mixtures thereof: slowly admixing anhydrous potassium carbonate into said solution under a nitrogen atmosphere until the reaction is completed; filtering out any undissolved potassium carbonate from the reaction mixture leaving a filtrate comprising a dimethyl sulfoxide solution of an oxy or thio substituted phthalonitride or a mixture thereof; slowly adding said filtrate to rapidly stirred water, forming a suspension; neutralizing said suspension; separating said oxy or thio substituted phthalonitrile; heating said oxy or thio substituted phthalonitrile alone or with a transition metal powder or salt, thereby forming phthalocyanine; separating said phthalocyanine.