02-05-2013 дата публикации
Номер: US20130105165A1
Автор:
Fogel Yulia,
Friedrich Stefan,
Gaeberlein Peter,
Guzmann Marcus,
LANGLOTZ Björn,
Leyrer Reinhold J.,
Orleans Andrea,
Ostrowski Thomas,
Pfeuffer Thomas,
Reichenbach-Klinke Roland,
Rösch Markus,
Schmidt Kati,
Schuhbeck Manfred
Water-soluble, hydrophobically associating copolymers which comprise new types of hydrophobically associating monomers. The monomers comprise an ethylenically unsaturated group and a polyether group with block structure comprising a hydrophilic polyalkylene oxide block which consists essentially of ethylene oxide groups, and a terminal, hydrophobic polyalkylene oxide block which consists of alkylene oxides with at least 4, preferably at least 5 carbon atoms. 123-. (canceled)24. A process for the development , exploitation , and completion of subterranean mineral oil deposits and natural gas deposits comprising utilizing a water-soluble , hydrophobically associating copolymer comprising at least(a) 0.1 to 20% by weight of at least one monoethylenically unsaturated, hydrophobically associating monomer (a), and(b) 25% to 99.9% by weight of at least one monoethylenically unsaturated hydrophilic monomer (b) different therefrom, {'br': None, 'sub': 2', '2', 'k', '2', 'l, 'sup': 1', '4', '2', '3', '5, 'HC═C(R)—R—O—(—CH—CH(R)—O—)—(—CH—CH(R)—O—)—R\u2003\u2003(I)'}, 'wherein the quantitative data are based in each case on the total amount of all of the monomers in the copolymer, wherein at least one of the monomers (a) is a monomer of the general formula (I)'}{'sub': 2', 'k', '2', 'l, 'sup': 2', '3, 'wherein the units —(—CH—CH(R)—O—)and —(—CH—CH(R)—O—)are arranged in block structure in the order shown in formula (I) and the radicals and indices have the following meaningk: a number from 10 to 150,l: a number from 5 to 25,{'sup': '1', 'R: H or methyl,'}{'sup': 2', '2, 'R: independently of one another, H, methyl, or ethyl, with the proviso that at least 50 mol % of the radicals Rare H,'}{'sup': 3', '2′', '2′, 'sub': '2', 'R: independently of one another, a hydrocarbon radical having at least 2 carbon atoms or an ether group of the general formula —CH—O—R, wherein R is a hydrocarbon radical having at least 2 carbon atoms,'}{'sup': '4', 'sub': n', '2n', 'n′', '2n′', 'n″', '2n″, ' ...
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