Composition Comprising Microcapsules

Abstract

A liquid composition having a microcapsule, the microcapsule having an aldehyde-containing resin, and one or more formaldehyde scavenger which reacts with formaldehyde to achieve more than about 60% reaction completeness in about 15 minutes time at pH 8 and at about 21° C. A liquid composition having a microcapsule, the microcapsule having an aldehyde-containing resin, one or more sulfur-based formaldehyde scavenger and optionally a non-sulfur-based formaldehyde scavenger.

What is claimed is: 
     
         1 . A liquid composition comprising a microcapsule, said microcapsule comprising an aldehyde-containing resin, and one or more formaldehyde scavenger which reacts with formaldehyde to achieve more than about 60% reaction completeness in about 15 minutes time at pH 8 and at about 21° C. 
     
     
         2 . The liquid composition according to  claim 1 , wherein said microcapsule further comprises one or more sulfur-based formaldehyde scavenger. 
     
     
         3 . The liquid composition according to  claim 2 , wherein said microcapsule further comprises a non-sulfur-based formaldehyde scavenger. 
     
     
         4 . The liquid composition according to  claim 1 , wherein said composition comprises a pre-made slurry which comprises said microcapsule and one or more non-sulfur based formaldehyde scavenger. 
     
     
         5 . The composition according to  claim 3 , wherein the composition comprises from about 0.0001% to about 1%, by weight of said composition, of said one or more non-sulfur-based formaldehyde scavenger. 
     
     
         6 . The composition according to  claim 3 , wherein said one or more non-sulfur-based formaldehyde scavenger comprises acetoacetamide. 
     
     
         7 . The composition according to  claim 2 , wherein the composition comprises from about 0.001% to about 2.0%, by weight of said composition, of said one or more sulfur-based formaldehyde scavenger. 
     
     
         8 . The composition according to  claim 2 , wherein said microcapsule comprises microcapsule wall material having a ratio, by weight, of said one or more sulfur-based formaldehyde scavenger to said microcapsule wall material of from about 0.05:1 to about 10:1. 
     
     
         9 . The composition according to  claim 2 , wherein said microcapsule comprises microcapsule wall material having a ratio, by weight, of said one or more sulfur-based formaldehyde scavenger to said microcapsule wall material of from about 0.1:1 to about 6:1. 
     
     
         10 . The composition according to  claim 3 , said composition having a ratio, by weight, of said non-sulfur-based formaldehyde scavenger to said one or more sulfur-based scavenger of from about 0.001:1 to about 5:1. 
     
     
         11 . The composition according to  claim 3 , said composition having a ratio, by weight, of said non-sulfur-based scavenger to said one or more sulfur-based scavenger of from about 0.01:1 to about 1:1. 
     
     
         12 . The composition according to  claim 1 , wherein said microcapsule is a core in shell microcapsule comprising a substance selected from the group consisting of perfume raw materials, silicone oils, waxes, hydrocarbons, higher fatty acids, essential oils, lipids, skin coolants, vitamins, sunscreens, antioxidants, glycerine, catalysts, bleach particles, silicon dioxide particles, malodor reducing agents, dyes, brighteners, antibacterial actives, antiperspirant actives, cationic polymers and mixtures thereof. 
     
     
         13 . The composition according to  claim 3 , wherein said non-sulfur-based formaldehyde scavenger is selected from the group consisting of urea, ethylene urea, lysine, glycine, serine, carnosine, histidine, 3,4-diaminobenzoic acid, allantoin, glycouril, anthranilic acid, methyl anthranilate, methyl 4-aminobenzoate, ethyl acetoacetate, acetoacetamide, malonamide, ascorbic acid, 1,3-dihydroxyacetone dimer, biuret, oxamide, benzoguanamine, pyroglutamic acid, pyrogallol, methyl gallate, ethyl gallate, propyl gallate, triethanol amine, succinamide, benzotriazol, triazole, indoline, oxamide, sorbitol, glucose, cellulose, poly(vinyl alcohol), partially hydrolyzed poly(vinylformamide), poly(vinyl amine), poly(ethylene imine), poly(oxyalkyleneamine), poly(vinyl alcohol)-co-poly(vinyl amine), poly(4-aminostyrene), poly(l-lysine), chitosan, hexane diol, ethylenediamine-N,N′-bisacetoacetamide, N-(2-ethylhexyl)acetoacetamide, 2-benzoylacetoacetamide, N-(3-phenylpropyl) acetoacetamide, lilial, helional, melonal, triplal, 5,5-dimethyl-1,3-cyclohexanedione, 2,4-dimethyl-3-cyclohexenecarboxformaldehyde, 2,2-dimethyl-1,3-dioxan-4,6-dione, 2-pentanone, dibutyl amine, triethylenetetramine, ammonium hydroxide, benzylamine, hydroxycitronellol, cyclohexanone, 2-butanone, pentane dione, dehydroacetic acid, ammonium hydroxide or a mixture thereof. 
     
     
         14 . The composition according to  claim 2  wherein said one or more sulfur-based formaldehyde scavenger is selected from the group consisting of alkali or alkali earth metal dithionites, pyrosulfites, sulfites, bisulfite, metasulfite, monoalkyl sulphite, dialkyl sulphite, dialkylene sulphite, sulfides, thiosulfates and thiocyanates, mercaptans, such as thioglycolic acid, mercaptoethanol, 4-hydroxy-2-mercapto-6-methylpyrimidine, mercaptothiazoline, thiodialkanoic acids, such as thiodipropionic acid, dithiodialkanoic acids, such as 3,3′-dithiodipropionic acid, sulfinates, such as sodium formaldehydesulfoxylate or formamidinosulfinic acid and thiourea and mixtures thereof. 
     
     
         15 . A liquid composition comprising a microcapsule, said microcapsule comprising an aldehyde-containing resin, one or more sulfur-based formaldehyde scavenger and optionally a non-sulfur-based formaldehyde scavenger. 
     
     
         16 . The composition according to  claim 15 , wherein the microcapsule is a core in shell microcapsule comprising a substance selected from the group consisting of perfume raw materials, silicone oils, waxes, hydrocarbons, higher fatty acids, essential oils, lipids, skin coolants, vitamins, sunscreens, antioxidants, glycerine, catalysts, bleach particles, silicon dioxide particles, malodor reducing agents, dyes, brighteners, antibacterial actives, antiperspirant actives, cationic polymers and mixtures thereof. 
     
     
         17 . The composition according to  claim 15 , wherein the one or more sulfur-based formaldehyde scavenger is selected from the group consisting of alkali or alkali earth metal dithionites, pyrosulfites, sulfites, bisulfite, metasulfite, monoalkyl sulphite, dialkyl sulphite, dialkylene sulphite, sulfides, thiosulfates and thiocyanates, mercaptans, such as thioglycolic acid, mercaptoethanol, 4-hydroxy-2-mercapto-6-methylpyrimidine, mercaptothiazoline, thiodialkanoic acids, such as thiodipropionic acid, dithiodialkanoic acids, such as 3,3′-dithiodipropionic acid, sulfinates, such as sodium formaldehydesulfoxylate or formamidinosulfinic acid and thiourea and mixtures thereof. 
     
     
         18 . The composition according to  claim 15 , wherein the non-sulfur-based formaldehyde scavenger is selected from the group consisting of urea, ethylene urea, lysine, glycine, serine, carnosine, histidine, 3,4-diaminobenzoic acid, allantoin, glycouril, anthranilic acid, methyl anthranilate, methyl 4-aminobenzoate, ethyl acetoacetate, acetoacetamide, malonamide, ascorbic acid, 1,3-dihydroxyacetone dimer, biuret, oxamide, benzoguanamine, pyroglutamic acid, pyrogallol, methyl gallate, ethyl gallate, propyl gallate, triethanol amine, succinamide, benzotriazol, triazole, indoline, oxamide, sorbitol, glucose, cellulose, poly(vinyl alcohol), partially hydrolyzed poly(vinylformamide), poly(vinyl amine), poly(ethylene imine), poly(oxyalkyleneamine), poly(vinyl alcohol)-co-poly(vinyl amine), poly(4-aminostyrene), poly(l-lysine), chitosan, hexane diol, ethylenediamine-N, N′-bisacetoacetamide, N-(2-ethylhexyl)acetoacetamide, 2-benzoylacetoacetamide, N-(3-phenylpropyl) acetoacetamide, lilial, helional, melonal, triplal, 5,5-dimethyl-1,3-cyclohexanedione, 2,4-dimethyl-3-cyclohexenecarboxformaldehyde, 2,2-dimethyl-1,3-dioxan-4,6-dione, 2-pentanone, dibutyl amine, triethylenetetramine, ammonium hydroxide, benzylamine, hydroxycitronellol, cyclohexanone, 2-butanone, pentane dione, dehydroacetic acid, ammonium hydroxide or a mixture thereof. 
     
     
         19 . A process of preparing a composition comprising the steps of:
 i) preparing a slurry of microcapsules comprising an aldehyde-containing resin and optionally one or more formaldehyde scavenger; and then   ii) adding said slurry to a substance comprising one or more sulfur-based formaldehyde scavenger.   
     
     
         20 . The process according to  claim 19 , wherein said one or more formaldehyde scavenger of step i) comprises a non-sulfur-based formaldehyde scavenger.