| 摘要 |
PURPOSE:To suppress or prevent color development of a dye precursor, by using as a main constituent a compound obtained by an addition reaction of a polyether amine derivative with an alpha,beta-unsaturated carboxylic acid or nitrile derivative. CONSTITUTION:A compound obtained by an addition reaction of a polyether amine derivative of formula I or II, wherein each of R1 and R3 is hydrogen, a lower alkyl or phenyl, R2 is a lower alkyl, and each of n, x, y and z is an integer of 1-100, with an alpha,beta-unsaturated carboxylic acid or nitrile derivative is incorporated. The alpha,beta-unsaturated carboxylic acid or nitrile derivative may be any alpha,beta-unsaturated compound which is substituted by an electron-absorptive group such as-CO-and-CN at beta-position. The addition reaction product can be obtained by bringing 1 mol of the polyether amine derivative and 1-6 mol of the alpha,beta-unsaturated carboxylic acid or nitrile derivative into reaction with each other at 20-200 deg.C for 1-100 hr. The reaction product is generally obtained as a light-colored or light yellow liquid, which is low in affinity for water, and is high in affinity for a vehicle resin. |
