The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2014
Filed:
Apr. 27, 2011
Dirk Leinweber, Kelkheim, DE;
Alexander Roesch, Oppenheim, DE;
Carsten Schaefer, Muehldorf, DE;
Alexander Woerndle, Frankfurt am Main, DE;
Dirk Leinweber, Kelkheim, DE;
Alexander Roesch, Oppenheim, DE;
Carsten Schaefer, Muehldorf, DE;
Alexander Woerndle, Frankfurt am Main, DE;
Clariant Finance (BVI) Limited, Tortola, VG;
Abstract
The invention provides for the use of copolymers comprising 1 to 99 mol % of structural units of the formula (1) in which Ris hydrogen or C-C-alkyl, A is C-C-alkylene groups and B is C-C-alkylene groups, with the proviso that A is different than B, and x, y are each independently an integer of 1-100, and 1 to 99 mol % of structural units of the formula (3) in which Ris hydrogen or C-C-alkyl, D is C-C-alkylene groups and z is an integer of 1-50, in amounts of 0.01 to 2% by weight, based on the water phase, as gas hydrate inhibitors.