Synergized Acetals Composition And Method For Scavenging Sulfides And Mercaptans

Abstract

This invention provides a composition comprisingI. at least one reaction product between a nitrogen-free monohydric alcohol and an aldehyde or ketone, andII. at least one reaction product between a nitrogen-free polyhydric alcohol and an aldehyde or ketone, and optionallyIII. at least one reaction product fromIII.a) formaldehyde, andIII.b) an amine, selected from the group consisting of primary alkyl amines having 1 to 4 carbon atoms, and primary hydroxy alkyl amines having 2 to 4 carbon atoms, and optionallyIV. at least one solid suppression agent selected from the group consisting ofIV(a). alkali or alkaline earth metal hydroxidesIV(b). mono-, di- or tri-hydroxy alkyl, aryl or alkylaryl amines,IV(c). mono-, di- or tri-alkyl, aryl or alkylaryl primary, secondary and tertiary amines orIV(d). multifunctional amines andIV(e). mixtures of compounds of groups IV(a) to IV(c).wherein alkyl is C1 to C15, aryl is C6 to C15 and alkylaryl is C7 to C15.

1 . A composition comprising
 I. at least one reaction product between a nitrogen-free monohydric alcohol and an aldehyde or ketone, and   II. at least one reaction product between a nitrogen-free polyhydric alcohol and an aldehyde or ketone, wherein   the reaction products I. and II. are selected from the group consisting of hemiacetals and acetals, and   the aldehyde or ketone contains 1 to 10 carbon atoms, and   the monohydric alcohol comprises 1 to 15 carbon atoms, and   the polyhydric alcohol contains 2 to 20 carbon atoms and 2 to 6 hydroxy groups.   
     
     
         2 . The composition according to  claim 1 , further comprising
 III. at least one reaction product from formaldehyde and a compound selected from the group consisting of ammonia and an amine, the amine being selected from the group consisting of primary alkyl amines having 1 to 4 carbon atoms, and primary hydroxy alkyl amines having 2 to 4 carbon atoms.   
     
     
         3 . The composition according to  claim 1 , further comprising
 IV. at least one inorganic or organic alkaline compound that functions as a solids suppression agent.   
     
     
         4 . The composition according to  claim 1 , wherein the aldehyde or ketone contains 1 to 4 carbon atoms. 
     
     
         5 . The composition according to  claim 1 , wherein the aldehyde or ketone is selected from the group consisting of formaldehyde, paraformaldehyde, glyoxal, acetaldehyde, propionaldehyde, butyraldehyde and glutaraldehyde. 
     
     
         6 . The composition according to  claim 1 , wherein the aldehyde or ketone is formaldehyde. 
     
     
         7 . The composition according to  claim 1 , wherein the monohydric alcohol comprises 1 to 5 carbon atoms. 
     
     
         8 . The composition according to  claim 1 , wherein the monohydric alcohol is an aliphatic alcohol. 
     
     
         9 . The composition according to  claim 1 , wherein the monohydric alcohol is selected from the group consisting of methanol, ethanol, propanol, iso-propanol, n-butanol, iso-butanol, tert-butanol, pentanol, hexanol, heptanol and octanol, and any mixture thereof. 
     
     
         10 . The composition according to  claim 1 , wherein the polyhydric alcohol is selected from the group consisting of monoethyleneglycol, diethylene glycol, triethylene glycol propylene glycol, butylene glycol, neopentyl glycol, pentaerythritol, glycerol and oligomers of glycerol. 
     
     
         11 . The composition according to  claim 1 , wherein the reaction product between a polyhydric alcohol and an aldehyde or ketone is selected from the group consisting of the compounds of formulae (2) to (5) 
       
         
           
           
               
               
           
         
         wherein 
         p is a number from 2 to 10, and 
         R 1  is H or C 1  to C 8  alkyl, and 
         R 2  is CH 2 OH, and 
       
       
         
           
           
               
               
           
         
         wherein 
         R 3  and R 4  independently are H or CH 2 OH 
       
       
         
           
           
               
               
           
         
         wherein 
         m is 1 to 10, and 
       
       
         
           
           
               
               
           
         
         wherein 
         R 5  is H, CH 3 , (CH 2 ) z CH 3    
         z is 1 to 10 
         x is 1 to 5. 
       
     
     
         12 . The composition according to  claim 1 , wherein the reaction product III of an amine and formaldehyde corresponds to the formula (1b) 
       
         
           
           
               
               
           
         
         wherein each R 1  is C 1  to C 4  alkyl or C 2  to C 4  hydroxy alkyl. 
       
     
     
         13 . The composition according to  claim 1 , wherein the reaction product III of an amine and formaldehyde corresponds to formula (1a) 
       
         
           
           
               
               
           
         
         wherein 
         R is H or methyl, and 
         n is 1 or 2. 
       
     
     
         14 . The composition according to  claim 13 , wherein the compound of formula 1 is 3,3′-methylenebis-5-methyl-oxazolidine. 
     
     
         15 . The composition according to  claim 1 , wherein the reaction product Ill of an amine and formaldehyde is present in the composition in an amount from 1 wt.-% to 20 wt. %. 
     
     
         16 . The composition according to  claim 1 , further comprising an alkyl dimethyl benzyl ammonium chloride according to formula (8) as a corrosion inhibitor 
       
         
           
           
               
               
           
         
         wherein R 9  is C 8  to C 18  alkyl. 
       
     
     
         17 . The composition according to  claim 16 , wherein the compound of formula (8) is present in an amount between 0.01 and 5 wt.-%. 
     
     
         18 . The composition according to  claim 1 , further comprising a demulsifier in an amount between 0.1 to 10 wt. %. 
     
     
         19 . The composition according to  claim 18 , wherein the demulsifier is selected from the group consisting of polysorbates, fatty alcohols, polymers comprising ethylene oxide, polymers comprising propylene oxide, ethylene oxide-propylene oxide copolymers, alkyl polyglucosides, alkylphenol ethoxylates, alkyl polyethylene oxide, alkylbenzenesulfonic acid and ethoxylated and/or propoxylated alkyl phenol-formaldehyde resins. 
     
     
         20 . The composition according to  claim 18 , wherein the demulsifier corresponds to the formula (6) 
       
         
           
           
               
               
           
         
         wherein 
         R 10  is C 2  to C 4  alkylene, 
         R 11  is C 1  to C 18  alkyl, 
         k is a number from 1 to 200, 
         m is a number from 1 to 100. 
       
     
     
         21 . The composition according to  claim 18 , wherein the demulsifier is dodecylbenezesulfonic acid 
       
         
           
           
               
               
           
         
       
     
     
         22 . The composition according to  claim 18 , wherein the demulsifier is a mixture of at least one compound of formula (6) and at least one compound of formula (7) in a weight ratio of from 5:1 to 1:5. 
     
     
         23 . The composition according to  claim 3 , wherein the alkaline compound IV. is selected from the group consisting of
 IV(a) alkaline metal salts or alkaline earth metal salts   IV(b) ammonia; alkyl, aryl or alkylaryl amines   IV(c) hydroxy alkyl, hydroxyl aryl or hydroxy alkylaryl amines   IV(d) multifunctional amines containing besides an amino group, at least one further functional group selected from the group consisting of amino groups, ether groups and acid groups or an ester, amide or salt thereof and   IV(e) mixtures of compounds of groups IV(a) to IV(c)   wherein “alkyl” means C 1  to C 20  alkyl, “aryl” means C 6  to C 20  aryl and “alkylaryl” means C 7  to C 20  alkylaryl.   
     
     
         24 . The composition according to  claim 1 , comprising 1 to 50 wt. % of the reaction product between a monohydric alcohol and an aldehyde or ketone. 
     
     
         25 . The composition according to  claim 1 , comprising 1 to 95 wt. % of the reaction product between a polyhydric alcohol and an aldehyde or ketone. 
     
     
         26 . The composition according to  claim 1 , comprising 0.1 to 10 wt. % of at least one solids suppression agent. 
     
     
         27 . The composition according to  claim 1 , comprising water ad 100 wt.-%. 
     
     
         28 .- 33 . (canceled)