| 摘要 |
PURPOSE:To obtain the subject resin, having a specific structure and a wide temperature range for enabling fixing, excellent in blocking resistance and useful as toners for electrophotography, electrostatic recording, etc. CONSTITUTION:The objective copolymer expressed by formula I. {M is formula II or III [M<1> is polymer constituent units composed of (A) 70-100wt.% monomer selected from styrene-based monomers and methyl methacrylate and (B) 0-30wt.% 3-4C alkyl (meth)acrylate; M<2> is polymer constituent units composed of 0-50wt.% component (A) and 50-100 wt.% component (B); n is 20-200; m is 15-190, provided that m<=n]; R<1> is 1-10C hydrocarbon residue; R<2> is H or R<1>; R<3> is benzyl or formula IV (R<4> is R<1>; R<5> is R<2>; R<6> is 1-18C hydrocarbon residue), provided that segments (M<1>)n and (M<2>). contain a monomer M<3> selected from maleic acid (anhydride), 1-10C mono- or dialkyl maleate and (meth)acrylic acid in an amount of 1-15wt.% based on the total amount of (M<1>+M<2>+M<3>) in addition to the aforementioned definition} |
