Patent ID: 11879095
Assignee: KEMIRA OYJ
Field: Basic materials chemistry (Chemistry)
Classification: CPC C  E | IPC C  E

Claim 7:
8. The oil or gas containing aqueous environment of claim 7, in which said composition comprises an aqueous solution or aqueous composition and at least one polymer, wherein:
(i) said at least one polymer comprises anionic monomers;
(ii) at said at least one polymer comprises acrylic acid monomers;
(iii) at said at least one polymer comprises ATBS monomers;
(iv) at said at least one polymer comprises acrylamide monomers and anionic monomers;
(v) at said at least one polymer comprises acrylamide monomers acrylic and acid monomers;
(vi). at said at least one polymer comprises acrylamide monomers and ATBS monomers;
(vii). said at least one polymer comprises a polymer that comprises 1-100 mol % of acrylamide monomers;
(viii). said at least one polymer comprises a polymer that comprises 0-2.5 mol % of acrylic acid monomers;
(ix). said at least one polymer comprises a polymer that comprises sulfonated polyacrylamide monomers;
(x). said at least one polymer comprises a polymer that comprises one or more sulfonic acid monomers selected from the group consisting of ATBS, vinylsulfonic acid, 4-styrenesulfonic acid, and salts of any of the aforementioned sulfonic acid monomers;
(xi). said at least one polymer comprises a polymer that comprises 0-25 mol % ATBS monomers;
(xii). said at least one polymer comprises a polymer that comprises 5 mol % acrylic acid and 95 mol % acrylamide monomers;
(xiii). said at least one polymer comprises a polymer that comprises 15 mol % ATBS and 85 mol % acrylamide monomers;
(xiv). said at least one polymer comprises a polymer that comprises 1-100 mol % of labile monomer units;
(xv). said at least one polymer comprises a polymer that comprises no charge when introduced into the oil or gas containing aqueous environment;
(xvi). said at least one polymer comprises a polymer which increases in charge by forming 1-100 mol % of anionically charged monomers after introduction into the oil or gas containing aqueous environment;
(xvii). said at least one polymer comprises a polymer that increases in viscosity by of 1-45% after introduction into the oil or gas containing aqueous environment;
(xviii). said at least one polymer comprises a polymer when present in said oil or gas containing aqueous environment retains at least 80% of its initial viscosity for a duration of 10-95 months; or
(xx) any combination of the foregoing.