C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
261/85
C04B 24/12 (2006.01)
Patent
CA 1223280
ABSTRACT OF TEE DISCLOSURE Polymers which are the reaction product of N-aminoethylpiperazine and a dihalo or epoxy- halo compound are subsequently phosphonomethylated to provide products which are useful as cement set retarders.
461339
Drump Druce K.
Wilson David A.
Smart & Biggar
The Dow Chemical Company
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