| 摘要 |
Printing ink, esp. for rotary machine printing, which is applied in the molten state and hardened by cooling (I), contains a binder comprising at least two component gps. (A) and (B) each of which contains at least one member. Component (A) contains crystalline substances (II) which act as solvents for the members of component (B). Component (B) contains substances (III) which are amorphous solids at room temp. and dissolve in the molten component (A) when heated to above the m.pt. of (A), and substances (II) go into solid soln. in (III) when the components solidify on cooling. This may be achieved by (a) using the following substances (II) in component (A) crystalline difunctional alcohols and/or fatty acid mono-esters of polyfunctional alcohols, and/or (b) using the following substances (III) in component (B), non-crosslinking P(M)A copolymers, thermoplastic polyamides, thermoplastic polyester-polyamide copolymers, thermoplastic rosin esters and/or soluble polystyrene and/or (c) by adding the following substances (IV) as components of a third gp., (C) which also go into solid soln. with the components of(A) and (B) on cooling 2,4,7,9-tetramethyl-dec-5-yne-4,7-diol, e.g. 'Surfynol 104' (RTM), but-2-yne-1,4-diol and/or 'Dow Corning PA 25' (RTM). |
