Phenolic and naphtholic ester crosslinked polymeric gels for per

Details Phenolic and naphtholic ester crosslinked polymeric gels for per Phenolic and naphtholic ester crosslinked polymeric gels for per

1990-03-19

1992-04-14

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524286, 524287, 524288, 524299, 524555, 524827, C09K 700

Patent

active

051049120

ABSTRACT:
An aqueous polymeric gel-forming composition which slowly crosslinks to form stable gels for plugging highly permeable zones in subterranean oil-bearing formations. The composition comprises an aqueous solution of a water-dispersible polymer present in a viscosifying amount and a crosslinking agent present in an amount effective to cause gelation of the polymeric solution which comprises a mixture of an aldehyde and a member selected from the group consisting of phenolic esters, naphtholic esters, halogenated phenolic esters and halogenated naphtholic esters.

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Hawley, the Condensed Chemical Dictionary, Van Nostrand Reinhold, Co., New York, NY (1981), at p. 257.

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