Thermally stable hydrophobically associating rheological control

Details Thermally stable hydrophobically associating rheological control Thermally stable hydrophobically associating rheological control

1990-08-08

1992-03-17

Stoll, Robert L.

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

5253275, 5253276, 5253267, 526262, 526271, 507120, 507122, C09K 700

Patent

active

050966030

ABSTRACT:
A water soluble polymer which is characterized by the formula: ##STR1## wherein x is 50 mole percent or 662/3 mole percent or 75 mole percent and y+z is 50 mole percent, when x is 50 mole percent, y+z is 331/3 mole percent, when x is 662/3 mole percent, and y+z is 25 mole percent, when x is 75 mole percent, wherein the molar ratio of y to z is about 100:1 to 1:100, and M.sup.+ is hydrogen or a metal cation selected from the group consisting of lead, aluminum, iron and Groups IA, IIA, IB and IIB of the Periodic Table of Elements and the level of sulfonation based upon the styrene monomer is about 75 to about 100 mole percent, and R is an alkyl group having about 6 to about 22 carbon atoms.

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