Described herein is a process for manufacturing a fibrous water-soluble unit dose with an active agent in the form of an acid.

A concentrate aqueous composition for removing Type I and Type III rouge from various stainless-steel items. The liquid composition comprises oxalic acid, a phosphonic acid, and various amines. The use of an amine has been found to provide synergistic results in removal of the noted types of corrosion from various stainless-steel items that include medical instruments, machines, equipment, pipes, tools, mixing and storage vessels, and the like.

A concentrate aqueous composition for removing Type I and Type III rouge from various stainless-steel items. The liquid composition comprises oxalic acid, a phosphonic acid, and various amines. The use of an amine has been found to provide synergistic results in removal of the noted types of corrosion from various stainless-steel items that include medical instruments, machines, equipment, pipes, tools, mixing and storage vessels, and the like.

The present invention relates generally to methods of making surfactant compositions and detergent compositions.

Surfactant compositions having a yield point, containing, based on the total weight thereof, (i) at least one surfactant, and (ii) at least one diarylamidocystine compound of the formula (I), wherein X.sup.+, independently of each other, stands for a hydrogen atom or an equivalent of a cation, R.sup.1, R.sup.2, R.sup.3, and R.sup.4, independently of each other, stand for a hydrogen atom, a halogen atom, a C.sub.1-C.sub.4 alkyl group, a C.sub.1-C.sub.4-Alkoxy group, a C.sub.2-C.sub.4 hydroxyalkyl group, a hydroxyl group, an amino group, an N(C.sub.1-C.sub.4 alkyl)amino group, an N,N-Di(C.sub.1-C.sub.4 alkyl)amino group, an N(C.sub.2-C.sub.4 hydroxyalkyl)amino group, an N,N-Di(C.sub.2-C.sub.4 hydroxyalkyl)amino group, or R.sub.1 with R.sub.2 or R.sub.3 with R.sub.4 forms a 5- or 6-segment annulated ring, which can each be substituted with at least one group from C.sub.1-C.sub.4 alkyl group, C.sub.1-C.sub.4 alkoxy group, C.sub.2-C.sub.4 hydroxyalkyl group, hydroxyl group, amino group, N(C.sub.1-C.sub.4 alkyl)amino group, N,N-Di(C.sub.1-C.sub.4 alkyl)amino group, N(C.sub.2-C.sub.4 hydroxyalkyl)amino group, N,N-Di(C.sub.2-C.sub.4 hydroxyalkyl)amino group, and (iii) water.

A solid block detergent composition is described which can be dispensed with a water spray to form an aqueous detergent for cutting and removing grease, removing and suspending soils and rinsing easily leaving cleaned ware. The solid block detergent contains a neutralized sulfonated anionic surfactant in combination with various processing aids to optimize soil removal in a formulation that can be pressed for form a solid.

A solid block detergent composition is described which can be dispensed with a water spray to form an aqueous detergent for cutting and removing grease, removing and suspending soils and rinsing easily leaving cleaned ware. The solid block detergent contains a neutralized sulfonated anionic surfactant in combination with various processing aids to optimize soil removal in a formulation that can be pressed for form a solid.

The present invention discloses a N,N,N,N-tetradodecyl-substituted diphenyl ether sulfonate anionic Gemini surfactant and the synthesis method thereof. It has a structural formula of:

##STR00001## and is prepared in a two-step reaction comprising: S1. subjecting 4,4-diaminodiphenyl ether and bromododecane to an amine alkylation reaction to obtain N,N,N,N-tetradodecyl-substituted diphenyl ether; and S2. sulfonating the N,N,N,N-tetradodecyl-substituted diphenyl ether with concentrated sulfuric acid to produce the target product, N,N,N,N-tetradodecyl-substituted diphenyl ether sulfonate. The surfactant of the present invention has a high surface activity and can be synthesized with a simple procedure under mild reaction conditions, and can be easily separated and purified. The surfactant of the present invention is promising in applications for alkaline/surfactant in tertiary oil recovery, for polymer/surfactant binary compound flooding, alkaline/surfactant/polymer tertiary compound flooding, microemulsion emulsifier, and the like, and may also be compounded with common surfactants to lower the cost, thereby enabling its application in a large scale.

A method for maintaining a consistent, low viscosity profile of a unit dose detergent composition for enhanced hydration and dissolution upon hydration including the steps of: (1) providing a detergent composition including: 0.4 to 9.6 wt. % of an alkoxylated polyamine including an alkoxylated polyamine, an alkyl-ether sulfate, a linear alkylbenzene sulfonate, and a fatty alcohol ethoxylate, wherein the alkyl-ether sulfate, linear alkylbenzene sulfonate, and fatty alcohol ethoxylate are collectively present in an amount of 30 to 70 wt. %, by weight of the detergent composition; and (2) encapsulating the detergent composition in a pouch made of a water soluble film.

A method for maintaining a consistent, low viscosity profile of a unit dose detergent composition for enhanced hydration and dissolution upon hydration including the steps of: (1) providing a detergent composition including: 0.4 to 9.6 wt. % of an alkoxylated polyamine including an alkoxylated polyamine, an alkyl-ether sulfate, a linear alkylbenzene sulfonate, and a fatty alcohol ethoxylate, wherein the alkyl-ether sulfate, linear alkylbenzene sulfonate, and fatty alcohol ethoxylate are collectively present in an amount of 30 to 70 wt. %, by weight of the detergent composition; and (2) encapsulating the detergent composition in a pouch made of a water soluble film.