Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers

SECTION I - CLASS DEFINITION

This class takes the characters of processes set forth below, the products of such processes where not more specifically provided for, and in the specified instances, compositions used in the processes. (Also see References to Other Classes, below.)

This is the generic class for processes of and compositions for dyeing materials of any kind (subclasses 400-696), including specific treatments peculiarly related to dyeing, such as mordanting, weighting, color protecting, etc. In subclasses 400-696 the main line subclass title indicates whether the particular subclass and its indents are limited to processes, compositions, etc., or combinations of such. In instances where subject matter proper for subclasses 400-696 is combined with subject matter proper for other main classes, unless contraindicated elsewhere, if the dye steps are followed by subject matter proper for another main class the combination is classified in the other class and cross-referenced here. Dyeing steps following or simultaneous with steps proper for other classes are generally classified here.