| 摘要 |
PURPOSE:To provide the titled resin containing an ampholytic ion group (or its salt) derived from a specific epoxy resin and suitable as a resin for water- based paint, resin for electro-deposition paint of self-emulsifiable reactive emulsifier, etc. CONSTITUTION:The objective ampholytic ion epoxy resin is derived from an epoxy resin having an epoxy equivalent of 100-6,000, contains (A) a side-chain bonded block of formula I (R1 and R2 are H or CH3; A is ether bond, ester bond, etc.; B is linear polymer block having a molecular weight of 100-7,000; Y is hydroxyl group, amino group, etc.) in the main chain and has (B) an ampholytic ion group (salt) of formula II or formula III (R3 is H or 1-20C alkyl; R4 is 1-12C alkylene, etc.; Z is -COO, -SO3, etc.; R5 is H, 1-12C alkyl, etc.) as at least one of the terminal groups of the main chain.
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