Water-soluble copolymers useful in drilling fluids

Details Water-soluble copolymers useful in drilling fluids Water-soluble copolymers useful in drilling fluids

1994-06-15

1996-04-23

Henderson, Christopher

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

524 3, 526264, 526287, 507118, C08F22802

Patent

active

055104363

ABSTRACT:
The water-soluble copolymer comprises 5-90% by weight of groups of the formula ##STR1## in which R.sup.1 is hydrogen or methyl, R.sup.2 is C.sub.2 -C.sub.10 -alkylene, and Me is ammonium or an alkali metal, 5-90% by weight of groups of the formula

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