Compositions with ph responsive copolymer containing maep and/or mahp and methods for using same

Abstract

Disclosed is a pH responsive polymer made with mono-[2-(methacryloyloxy)ethyl]phthalate and/or mono-[2-(methacryloyloxy)ethyl hexahydro]phthalate. Also disclosed is an aqueous coating composition including at least one latex polymer derived from at least one monomer copolymerized or blended with alkali swellable acrylate copolymer. Also provided is an aqueous coating composition including at least one latex polymer derived from at least one monomer blended with alkali swellable acrylate copolymer, at least one pigment, and water. Also provided is a method of preparing an aqueous coating composition such as a latex paint including the above components. Also provided are methods of preparing mono-[2-(methacryloyloxy)ethyl]phthalate. Also provided are compositions and methods using the polymer in hydraulic fracturing, personal care and or home and industrial cleaners.

1 - 13 . (canceled) 
     
     
         14 . An aqueous composition, comprising water and a pH responsive copolymer of unsaturated copolymerizable monomers, said unsaturated copolymerizable monomers comprising, based on total weight of monomers:
 A. about 0.1-70 weight percent first acidic monomer selected from at least one member of the group consisting of mono-[2-(methacryloyloxy)ethyl]phthalate and mono-[2-(Methacryloyloxy)ethyl hexahydro]phthalate,   B. about 0-45 weight percent of at least one C3-C8 alpha beta-ethylenically unsaturated second acidic monomer, preferably a C3-C8 alpha beta-ethylenically unsaturated carboxylic acid monomer;   C. about 15-70 weight percent of at least one nonionic, copolymerizable C2-C12 alpha, beta-ethylenically unsaturated monomer; and   D. about 0 to 30 weight percent of at least one nonionic ethylenically unsaturated hydrophobic monomer.   
     
     
         15 . The aqueous composition of  claim 14 , further comprising an emulsifier, wherein the aqueous composition is a pH responsive composition. 
     
     
         16 . The aqueous composition of  claim 15 , having an average particle size of about 500 to about 3000 angstroms and a Brookfield viscosity of about 100 to about 500,000, cps as a 1 percent aqueous solution in ammonium salt at pH 9.0 and 25 degrees C. 
     
     
         17 . The aqueous composition of  claim 14 , wherein the composition comprises, based on 100 parts by weight of the composition, from about 0.05 parts by weight to about 20 parts by weight of the pH responsive polymer. 
     
     
         18 . The aqueous composition of  claim 14 , wherein the composition is an emulsion comprising an effective amount of the pH responsive compound, and further comprises an emulsifier and a film forming polymer latex, wherein the pH responsive copolymer is present in an amount effective for modifying the rheological properties of the emulsion. 
     
     
         19 . The composition of  claim 16 , further comprising one or more of a pigment, a filler, or an extender. 
     
     
         20 . The aqueous composition of  claim 18 , wherein the emulsion is selected from the group consisting of a latex paint, a latex coating, a cosmetic, a detergent/cleanser, and an oilfield drilling fluid. 
     
     
         21 . The aqueous composition of  claim 20 , wherein the emulsion is a latex paint, further comprising at least one additive selected from the group consisting of dispersants, surfactants, rheology modifiers, defoamers, thickeners, biocides, mildewcides, colorants, waxes, perfumes and co-solvents to a mixture comprising the latex polymer and water. 
     
     
         22 - 23 . (canceled) 
     
     
         24 . The aqueous composition of  claim 14 , wherein the composition is a personal care composition and further comprises one or more surfactants. 
     
     
         25 . The aqueous composition of  claim 14 , wherein the one or more surfactants comprise at least one anionic surfactant and the composition further comprises a structuring agent for the anionic surfactant. 
     
     
         26 . The aqueous composition of  claim 14 , further comprising a personal care benefit agent. 
     
     
         27 . The aqueous composition of  claim 14 , wherein the composition is a particle dispersion and further comprises particles dispersed in the composition. 
     
     
         28 . A method for handling particles, comprising dispersing the particles in a composition according to  claim 27 , to form an aqueous particle dispersion. 
     
     
         29 . The method of  claim 28 , further comprising transporting the aqueous particle dispersion by pumping the aqueous particle dispersion through a conduit. 
     
     
         30 . The method of  claim 29 , comprising directing a stream of the composition into a subterranean formation,
 wherein the composition is a hydraulic fracturing composition and further comprises a proppant.   
     
     
         31 . The aqueous composition of  claim 14 , wherein the composition is a hydraulic fracturing composition and further comprises a proppant. 
     
     
         32 . A method for fracturing a geologic formation, comprising directing a stream of the composition of  claim 31  at a surface of the formation at a pressure and flow rate at least sufficient to initiate, extend, or initiate and extend one or more fractures in the formation. 
     
     
         33 . A method for thickening an aqueous emulsion, comprising: forming a blend by blending with the aqueous emulsion an amount of the pH-responsive composition of claim  12  effective to thicken the aqueous emulsion when pH of the blend is adjusted to a pH in the range of about 6.5 to about 11. 
     
     
         34 . A process comprising the steps of:
 mixing 100 parts by weight 2-hydroxyethy methacrylate (HEMA) and 0.1 to 0.5 parts by weight 4-methoxyphenol (MEHQ) to form a mixture;   heating the mixture to a set point of 70-100° C. with NOx sparge and then adding 25-50 parts by weight phthalic anhydride as a first dose of phthalic anhydride to the heated mixture;   after adding the first dose of phthalic anhydride then adding 1-3 parts by weight imidazole to the mixture;   after adding the imidazole then adding 50 to 90 parts by weight phthalic anhydride as a second dose of phthalic anhydride;   after adding the second dose of phthalic anhydride then heating the reaction mixture at 70-90° C. to form mono-[2-(methacryloyloxy)ethyl]phthalate; and   recovering the mono-[2-(methacryloyloxy)ethyl]phthalate.   
     
     
         35 . A process comprising the steps of:
 mixing 15-25 parts by weight 2-hydroxyethy methacrylate (HEMA) and at least one member of the group consisting of 1-3 parts by weight 2,6-di-tert-butyl-4-((dimethylamino)methyl)phenol or 0.2-2 parts by weight 2,4,6-tris((dimethylamino)methyl)phenol;   heating the mixture to a set point of 70-100° C. with NOx sparge and then adding 10-30 parts by weight phthalic anhydride to the heated mixture;   after adding the phthalic anhydride then heating the reaction mixture at 70-90° C. to form mono-[2-(methacryloyloxy)ethyl]phthalate; and   recovering the mono-[2-(methacryloyloxy)ethyl]phthalate.   
     
     
         36 . The process of  claim 35  wherein the process is performed with an absence of MEHQ and an absence of base catalyst. 
     
     
         37 . The process of  claim 35  wherein the process is performed with an absence of base catalyst. 
     
     
         38 . A method for promoting personal care comprising applying the copolymer of claim  1  to skin or hair of a user. 
     
     
         39 . A home care or industrial cleaning composition for cleaning fabrics or hard surfaces comprising, the copolymer of claim  1  and a surfactant and a home care or industrial cleaner benefit agent. 
     
     
         40 . A method for cleaning a substrate selected from the group consisting of a hard surface and a fabric, comprising applying the composition of  claim 39  to the substrate.