US Patent 12134750 Solidification process using low levels of coupler/hydrotrope

The invention includes a solid rinse aid that is particularly designed for extrusion solid formation and which is effective for creating spotless surfaces after rinsing. According to the invention, application has identified the critical combination of solid surfactants, coupling agents, hydrotrope, and hardening agents that is acceptable in the extrusion process to create a solid. The hydrotrope includes one or more short-chain alkylbenzene and/or alkyl naphthalene sulfonates. The composition hardens quickly but not so quick as to negatively impact the extrusion process. The compositions may also be used to form pressed or cast solids.