A process for the preparation of a latex comprising the polymerization of monomer in the presence of a chain transfer component, an initiator, a diphenyloxide disulfonate, and an optional nonionic surfactant.

A surfactant free process for the preparation of toner comprising heating a mixture of an emulsion latex, a colorant, and an organic complexing agent.

The method of modifying materials in a uniform and reproducible manner which comprises activating and treating materials, the treating step being performed with modification agent. There is also disclosed an apparatus for modifying materials.

The electrolysis of aqueous alkali metal chloride solutions wherein chlorine is liberated at the anode, is improved through the use of an anode comprising a valve metal substrate, a coating thereon of conductive oxide bronze, and an outer coating of a noble metal oxide.

This invention relates to a process for separating one or more products from a reaction product fluid comprising a metal-organophosphorus ligand complex catalyst, optionally free organophosphorus ligand, a nonpolar solvent and said one or more products, wherein said process comprises (1) mixing said reaction product fluid with a polar solvent to obtain by phase separation a non-polar phase comprising said metal-organophosphorus ligand complex catalyst, optionally free organophosphorus ligand and...

A process for the preparation of toner comprising (i) aggregating a colorant dispersion with an encapsulated wax; (ii) coalescing or fusing the aggregates generated; and optionally (iii) isolating, washing, and drying the toner.

A toner process comprising heating a mixture of a latex and a colorant, which heating is accomplished below about the glass transition temperature, Tg, of polymer contained in the latex; cooling; and subsequently adding a methacrylate polymer solution; adjusting the pH of the mixture resulting to permit the methacrylate polymer to precipitate on said mixture of latex and said colorant; and wherein resulting product is heated above about the glass transition temperature, Tg, of said latex polymer...

A process for the preparation of toner by, for example, mixing a latex with a colorant mixture comprised of colorant, an ionic surfactant, and a polytetrafluoroethylene; adding a coagulant; heating the resulting mixture below about the glass transition temperature (Tg) of the latex resin; adding a stabilizer; heating above about the Tg of the latex resin; and isolating the toner.

A toner process comprising mixing a colorant dispersion with a latex, a wax dispersion, and a coagulant, and wherein the polymer present in the latex possesses a gel content of from about 0.5 to about 4.5 weight percent, a polymer melt flow index (MFI) of from about 20 to about 45 grams/10 minutes at about from about 115.degree. C. to about 145.degree. C., the crosslinking molecular weight M.sub.c of the polymer being from about 12,000 to about 200,000, and the crosslinking density M.sub.e of th...

A process for the preparation of toner compositions comprising (i) preparing a pigment dispersion in a solvent, which dispersion is comprised of a pigment, an ionic surfactant and optionally a charge control agent; (ii) shearing the pigment dispersion with a latex mixture comprised of a counterionic surfactant with a charge polarity of opposite sign to that of said ionic surfactant, a nonionic surfactant and resin particles, thereby causing a flocculation or heterocoagulation of the formed parti...