Process for delaying the gelling of unsaturated monomers, delaye

Details Process for delaying the gelling of unsaturated monomers, delaye Process for delaying the gelling of unsaturated monomers, delaye

1989-11-24

1991-08-27

Stoll, Robert L.

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

Organic compounds

Carboxylic acid esters

526 62, 252 851, 252 8511, 252 8512, 252 8551, 166285, 562598, 564 4, C09K 700, C08F 200

Patent

active

050434683

ABSTRACT:
The present invention relates to a process and compositions for delaying the gelling of vinyl monomers in an aqueous medium in the presence of a polymerization initiator, by employing a polymerization inhibitor consisting of an N-nitrosophenylamine salt in combination with an aminocarboxylic acid. The composition is used for plugging circulation losses when drilling at great depth.

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patent: 4190109 (1980-02-01), Barton, Jr.
patent: 4190717 (1980-02-01), Suzuki et al.
patent: 4638079 (1987-01-01), Inskip et al.
patent: 4644020 (1987-02-01), Stahl
patent: 4663480 (1987-05-01), Inskip et al.
patent: 4687586 (1987-08-01), Argabright et al.

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