An ink set includes: an inkjet ink; and a cleaning solution, the inkjet ink including a pigment and an aqueous medium, a drying ratio of the inkjet ink when left to stand at 40 C. for 24 hours being 87 mass % or more and 93 mass % or less, the cleaning solution including diethylene glycol butyl methyl ether and trihydric or higher polyhydric alcohol.

Described herein are solvents and co-solvents comprising anhydromevalonolactone (aMVL) and various industrial applications for such solvents. aMVL has a number of advantageous properties for use in solvent, including high boiling point, low melting point, low viscosity, non-flammability, water solubility, exceptionally low volatility, and excellent solvation capability. Exemplary industrial applications for solvents comprising aMVL include polymer manufacturing, polymer recycling, mold production, fiber production, membrane manufacturing, thermosetting paint manufacturing, coating manufacturing, coating removal, paint strippers, cleaning products, degreasing products, nitrile synthesis, alkylation, production of syngas, carbon-carbon cross-coupling reactions, metal organic framework synthesis, halogenation reactions, formation of pharmaceuticals, formation of fungicides and/or herbicides, seed treatment products, bioregulators, and electrolytes in batteries or capacitors.

The present disclosure provides a composition for cleaning or stripping a material from a substrate. The composition includes a primary solvent and a co-solvent. The co-solvent includes one or more caprolactam-derived solvents.

Described herein are solvents and co-solvents comprising anhydromevalonolactone (aMVL) and various industrial applications for such solvents. aMVL has a number of advantageous properties for use in solvent, including high boiling point, low melting point, low viscosity, non-flammability, water solubility, exceptionally low volatility, and excellent solvation capability. Exemplary industrial applications for solvents comprising aMVL include polymer manufacturing, polymer recycling, mold production, fiber production, membrane manufacturing, thermosetting paint manufacturing, coating manufacturing, coating removal, paint strippers, cleaning products, degreasing products, nitrile synthesis, alkylation, production of syngas, carbon-carbon cross-coupling reactions, metal organic framework synthesis, halogenation reactions, formation of pharmaceuticals, formation of fungicides and/or herbicides, seed treatment products, bioregulators, and electrolytes in batteries or capacitors.

A maintenance method according to an embodiment of the present disclosure is a maintenance method for a recording apparatus including an ink jet head having a nozzle that ejects a water-based ink composition, the maintenance method including a leaving-to-stand step of performing leaving-to-stand with a nozzle surface in which the nozzle of the ink jet head is formed being in contact with an absorbing member containing a maintenance liquid.

A composition comprises dimethyl carbonate (DMC) and dimethyl sulfoxide (DMSO) and has a flash point of 70 F. or greater. The composition has a total VOC content defined by the Environmental Protection Agency (EPA) of 50 weight percent (%) or less. The composition removes or strips paint in a period of time of two hours or less. The composition may further comprises one or more corrosion inhibitors.