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US 3,947,459 AGranted
Aqueous preparation of sulfenamides
AssigneeThe Goodyear Tire & Rubber Company
InventorsPenelope R. Pappas, Dane K. Parker
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Abstract
This invention relates to an improved process for preparing thiazolesulfenamides from aqueous chloramines and alkali metal salts of mercaptothiazoles, in water. The chloramine mixture can be prepared from amines or aqueous amine salt solutions.
Claims23
An improved process for the preparation of sulfenamides by combining an aqueous solution of an alkali metal salt of a mercaptothiazole with an amine and bleach and reacting the mixture, the improvement comprising
- a. adding an amine to bleach to form a chloramine mixture,
- b. adding the aqueous solution of an alkali metal salt of a mercaptothiazole to the chloramine mixture,
- c. allowing the reaction to take place, and
- d. separating and water-washing the sulfenamide.
1 more element
A process for the preparation of sulfenamides comprising
- a. adding an amine salt solution to bleach to form a chloramine mixture,
- b. adding a base to the chloramine mixture,
- c. adding an aqueous alkali sodium or potassium mercaptobenzothiazole to the chloramine mixture,
- d. allowing the reaction to take place, and
- e. separating and water washing the sulfenamide.
2 more elements
Dependencies are inferred from the claim text.