Cross-linking titanum & zirconium; chelates & Their use

Details Cross-linking titanum & zirconium; chelates & Their use Cross-linking titanum & zirconium; chelates & Their use

1989-11-28

1991-02-26

Straub, Gary P.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

C07F 728, C07F 700

Patent

active

049963368

ABSTRACT:
Water-soluble chelates represented by the formula: ##STR1## wherein R is H or alkyl (1-12C) and M is Ti or Zr. The above chelates can be prepared by reacting a Ti or Zr halide or alkoxide with between 1 & 2 molar equivalents of N,N-bix-(2-hydroxyethyl)-glycine, and used as cross-linking agents in hydraulic fracturing fluids and in gels that are used for selectively plugging permeable zones or leaks.

REFERENCES:
patent: 2894966 (1959-07-01), Russell
patent: 4021536 (1977-05-01), Rubino

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