| abstract |
A process to reduce atmospheric ammonia by applying an anionic polymer composition in an area subject to the formation of ammonia, said anionic polymer has at least four repeating units, including at least one of the repeating units of type B, type C and type G, said repeating units of type B selected from the group consisting of repeating units derived from substituted and unsubstituted monomers of maleic acid and / or anhydride, fumaric acid and / or anhydride, mesaconic acid and / or anhydride, mixtures of the above and any isomer, ester, acid chlorides and partial or complete salts of any of the foregoing, wherein the repeating units of type B may be substituted with one or more C1-C6 straight or branched chain alkyl groups substantially free of structures of ring and halo atoms, and wherein the salts have salt-forming cations selected from the group consisting of metals, amines, and m mixtures thereof, said repeating units of type C selected from the group consisting of repeating units derived from substituted or unsubstituted monomers of itaconic acid, itaconic anhydride and any isomer, ester and the partial or complete salts of any of the foregoing, and mixtures of any of the foregoing, wherein the C-type repeating units may be substituted with one or more C1-C6 straight or branched chain alkyl groups substantially free of ring structures and halo atoms, and wherein the salts have forming cations of salts selected from the group consisting of metals, amines and mixtures thereof, said repeating units of type G selected from the group consisting of repeating units derived from substituted or unsubstituted sulfonated monomers that possess at least one carbon-carbon double bond and at least one sulfonate group and which are substantially free of aromatic rings and amide groups, and of which any isomer, and of the partial or complete salts of any of the foregoing, and mixtures of any of the foregoing, wherein the repeating units of type G may be substituted with one or more substantially C1-C6 straight or branched chain alkyl groups free of ring structures and halo atoms, and where the salts of the repeating G-type units have salt-forming cations selected from the group consisting of metals, amines, and mixtures thereof, at least about 90 percent are selected in moles of the repeating units in them of the group formed by repeating units of type B, C and G, and mixtures thereof, said repeating units being randomly located throughout the polymer, said polymer containing no more than approximately 10 percent in moles of any of (I) non-carboxylate olefin repeating units, (ii) ether repeating units, and (iii) monocarbox repeating units non-sulfonated ilic, said repeating units include at least one of each repeating unit of maleic, itaconic and sulfonate. |