Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Patent
1991-01-29
1991-11-26
Dees, Jose G.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
C07F 722
Patent
active
050683730
ABSTRACT:
A method is disclosed for the preparation of anhydrous tin-(IV)-carboxylate. Metallic tin or Sn-(II)-acetate is reacted with an excess of acetic acid anhydride under agitation and at temperatures of 50.degree. to 150.degree. C. Oxygen is passed through the reaction mixture or an oxygen yielding agent is added thereto. The tin-(IV)-acetate thus formed, which is useful, per se, is separated from the reaction mixture and further reacted with a carboxylic acid with more than four carbon atoms or an acid anhydride corresponding to said carboxylic acid. The reaction is carried out at temperatures of about 80.degree. to 150.degree. C. and the liberated acetic acid anhydride or acetic acid is removed by distillation under vacuum.
REFERENCES:
patent: 3162660 (1964-12-01), Crayton
Dees Jos,e G.
Nazario-Gonzalez Porfirio
Th. Goldschmidt Ag
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