C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 226/02 (2006.01) C04B 24/26 (2006.01) C08F 220/02 (2006.01) C08F 220/54 (2006.01)
Patent
CA 2182820
A high-flow concrete additive comprises a polymer of 10-100 wt% of an N-vinylacetamide, 0-50 wt% of a compound CH2=CR3X1R4SO3X2 wherein R3 is hydrogen or methyl, R4 is alkylene of 1 to 4 carbon atoms, X1 is CONH or COO, and X2 is hydrogen, an alkali metal, ammonium salt or organic ammonium salt, and 0-40 wt% of a compound CH2=CR5X3 wherein R5 is hydrogen or methyl and X3 is CN, COOR6, CONH2, CONHR7, CONR8R9, COR10, OCOR11 or OR12, in which R6 is hydrogen, an alkali metal, ammonium salt, organic ammonium salt or alkyl group of 1 to 4 carbon atoms, R7, R8 and R9 are alkyl groups of 1 to 4 carbon atoms, and R10, R11 and R12 are alkyl groups of 1 to 4 carbon atoms.
Futami Takanori
Tagoshi Hirotaka
Yamaguchi Tetsuhiko
Ridout & Maybee Llp
Showa Denko K.k.
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