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Water-soluble, biodegradable polyamide copolymers useful as flow agents in hydraulic binders or as water retention aids have grafted side chains containing aldehydes and sulfur-containing acids or their salts
Water-soluble, biodegradable polyamide copolymers useful as flow agents in hydraulic binders or as water retention aids have grafted side chains containing aldehydes and sulfur-containing acids or their salts