Abstract: Process for continuously transferring heat to a moving band of solid material, for example, a textile, a film, particles, or any shaped or unshaped article, the band preferably comprising a disperse dyeable synthetic polymer, for example, a polyester or polyamide, said process comprising passing the band through a substantially enclosed purging-drying region containing the superheated condensable vapor of a liquid having an atmospheric pressure boiling point of less than 120.degree. C., thence immediately thereafter through a substantially enclosed, heat-transfer region containing the superheated condensable vapor of a fluorocarbon having a fluorine to carbon atom ratio of at least 1.5, a solubility parameter of not more than 6.

Abstract: Non-aqueous, atmospheric pressure, batch exhaust process for applying and fixing a disperse dye or brightening agent on a disperse dyeable synthetic polymer, for example, a polyester, in the form of a fiber, fabric or film, said process providing good exhaust and rapid fixation of dye and agent and comprising:A. immersing the polymer in a bath containing a dispersion comprising a liquid, organic continuous phase, a dispersing agent having dispersing activity in the continuous phase and at least one member of the group consisting of disperse dye and brightening agent, said continuous phase being a non-solvent for the dye or brightening agent;B. distillatively removing the continuous phase from the bath and replacing same, at a rate which is volumetrically proportional to the rate of removal of the continuous phase, with a liquid fluorocarbon which is miscible with the continuous phase and has a fluorine to carbon atom ratio of at least 1.5, a solubility parameter of no greater than 6.

Abstract: Process for substantially quantitatively removing and recovering a volatile, organic, water-immiscible wetting liquid from a solid material which is wet therewith, which process comprises intimately contacting the solid material first with the superheated vapor of a water-immiscible, organic stripping liquid and thereafter with dry steam, said contacting taking place in an environment substantially free of noncondensable gas, condensing the mixture of organic vapor and steam to form a two-phase liquid mixture consisting of liquid organic phase and liquid water phase, and separating the liquid organic phase and the liquid water phase.