| 摘要 |
PURPOSE: A water soluble wear-resistant agent for metal working process is provided to obtain improved solubility, foaming stability and lubricating ability by introducing both of a hydrophilic group and a hydrophobic group into a molecule of the agent. CONSTITUTION: The wear-resistant agent comprises a polymer combination represented by a formula of H(OCH2CH2)£(OCH2CH2)xOOC-R1-COO|n(CH2CH2O)xCH2CH2OR2) prepared by conducting a condensation-polymerization of aliphatic di-basic acid represented by a formula of HOOC-R1-COOH and polyethyleneglycol represented by a formula of H(OCH2CH2)xOCH2CH2OH in a presence of specified catalyst (wherein R1 is alkyl or alkenyl group having C4-C12; R2 is hydrogen or -(O)C-R1-COOH; x is integer of 4-35; n is integer less than 4 when R2 is hydrogen while another integer of 1-10 when R2 is -(O)C-R1-COOH).
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