Abstract: Aqueous polymer latex compositions are disclosed which can be applied as by spraying to the surfaces of cut or live floral and foliage displays and which maintains the appearance of such displays substantially unchanged for an extended period of time following application. Displays thus retain their appearance throughout the length of an event or for some time following delivery to a person. The compositions maintain the appearances of the displays notwithstanding adverse conditions such as the display being in a high heat or low humidity atmosphere. The method of maintaining the appearance by application of the compositions to the plant surfaces is also disclosed.

Abstract: A process is disclosed for removing heavy metals, dissolved aluminum, sulfides and organic compounds from a caustic etch solution, thereby regenerating the etching power of the solution or facilitating its disposal into the environment. The process consists of forming a first filtrate from which heavy metals present in the solution have been removed, and a second filtrate obtained by precipitating and oxidizing residual chemicals remaining in the first filtrate. The latter is done over a selected pH and temperature range. The second filtrate is then either reclaimed back to the etching tank, or subjected to ozonization prior to disposing of it into the environment.

Abstract: A process is disclosed for removing heavy metals, dissolved aluminum, sulfides and organic compounds from a caustic etch solution, thereby regenerating the etching power of the solution or facilitating its disposal into the environment. The process consists of forming a first filtrate from which heavy metals present in the solution have been removed, and a second filtrate obtained by precipitating and oxidizing residual chemicals remaining in the first filtrate. The latter is done over a selected pH and temperature range. The second filtrate is then either reclaimed back to the etching tank, or subjected to ozonization prior to disposing of it into the environment.