Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...
Patent
1983-09-02
1984-09-18
Poer, James
Compositions: coating or plastic
Coating or plastic compositions
Metal-depositing composition or substrate-sensitizing...
106315, C04B 735
Patent
active
044722001
ABSTRACT:
Certain methylenephosphonic acid derivatives of aminohydrocarbylpiperazine-urea adducts have been found to be good cement set-retarding additives.
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SU-640-019, "Plugging Mixture for High-Temperature Oil or Gas Wells-Comprises Portland Cement and 1-Hydroxy 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.
Crump Druce K.
Wilson David A.
Ancona A. C.
Poer James
The Dow Chemical Company
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