초록 ▼

A process for manufacturing an aqueous composition of a peracid by reacting an acid anhydride with concentrated hydrogen peroxide. Preferably the aqueous peracid composition is further converted into an emulsion having improved stability wherein said emulsion contains a surfactant having an HLB abov

A process for manufacturing an aqueous composition of a peracid by reacting an acid anhydride with concentrated hydrogen peroxide. Preferably the aqueous peracid composition is further converted into an emulsion having improved stability wherein said emulsion contains a surfactant having an HLB above 11 and a surfactant having an HLB below 11.

대표청구항 ▼

[ We claim:] [1.] A process for manufacturing an aqueous composition comprising a peracid, or mixture thereof, wherein said peracid is emulsified in a surfactant system comprising at least a hydrophilic surfactant having an HLB a bove 11, and a hydrophobic surfactant having an HLB below 11, said pro

[ We claim:] [1.] A process for manufacturing an aqueous composition comprising a peracid, or mixture thereof, wherein said peracid is emulsified in a surfactant system comprising at least a hydrophilic surfactant having an HLB a bove 11, and a hydrophobic surfactant having an HLB below 11, said process comprising the steps of:1--preparing an aqueous peracid-comprising composition by a process which comprises the step of forming said peracid by reacting the corresponding anhydride with a solution of hydrogen peroxide comprising at least about 3 moles of said hydrogen peroxide per molar equivalent of said corresponding anhydride, wherein said corresponding anhydride is selected from anhydrides having the following formula: [ STR 4 ] wherein R.sub.1 and R.sub.2 are linear or branched alkyl groups having of from 1 to about 20 carbon atoms, said anhydrides being symmetric anhydrides or asymmetric anhydrides;-- preparing a hydrophobic mixture which comprises at least said hydrophobic surfactant;3--preparing a hydrophilic mixture which comprises at least water and said hydrophilic surfactant;4--mixing the composition obtained in step 1 in said hydrophilic mixture if said corresponding anhydride used in step 1 is an anhydride having the following formula: [ STR 5 ] wherein R.sub.1 and R.sub.2 are linear or branched alkyl groups having of from 1 to 4 carbon atoms, said anhydrides being symmetric anhydrides or asymmetric anhydrides or in said hydrophobic mixture if said corresponding anhydride used in step 1 is an anhydride having the following formula: [ STR 6 ] wherein R.sub.1 and R.sub.2 are linear or branched alkyl groups having of from 5 to about 20 carbon atoms, said anhydrides being symmetric anhydrides or asymmetric anhydrides-- then mixing together said hydrophobic mixture and said hydrophilic mixture, and wherein steps 2 and 3 may be performed in any order.