Methylenephosphonic acid derivatives of bis(aminoalkyl)piperazin

Details Methylenephosphonic acid derivatives of bis(aminoalkyl)piperazin Methylenephosphonic acid derivatives of bis(aminoalkyl)piperazin

1984-02-24

1985-02-19

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106315, C04B 735

Patent

active

045003564

ABSTRACT:
Methylenephosphonic acid derivatives of bis(aminoalkyl)piperazine are employed as cement set retarding additives. The compounds must have at least one of the amine hydrogens phosphonomethylated.

REFERENCES:
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patent: 3794506 (1974-02-01), Schmidt et al.
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patent: 3964921 (1976-06-01), Persinski et al.
patent: 4040854 (1977-08-01), Persinski et al.
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patent: 4401473 (1983-08-01), Kleiner et al.
Chem. Abstracts: 97, 112352a--"Plugging Composition for Cementing Oil and Gas Wells", Dytyuk, L. T. et al.
Chem. Abstracts: 97, 26178a--"Plugging Fluids for Cementing Deep Petroleum and Gas Wells", Alekseev, P. D., et al.
Chem Abstracts: 98, 58912p--"Improvement of Casing Cementation in Deep and Ultradeep Wells, Part 2. Deep Well Cements and Additives," Arens, K. H. et al.
SU-640-019, "Plugging Mixture for High-Temperature Oil or Gas Wells--Comprises Portland Cement and 1-Hydroxye Ethylidene-Phosphonic Acid Sodium or Potassium Salt", Khariv I YU.
"Additives Tailor Cement to Individual Wells", P. N. Parker, C. Clement, The Oil and Gas Journal, Mar. 14, 1977, vol. 75.

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