| abstract |
(57) [Summary] [Structure] 1,1-Dichloro-1-fluoroethane (R1 41b) 30-60% by weight and dichloromethane 40-7 A screen ink cleaning composition comprising 0% by weight. [Effect] The composition comprising R141b and dichloromethane of the present invention satisfies the excellent properties of conventional 1,1,1-trichloroethane, has no particular effect on the screen material, and has a detergency for ink. There are advantages such as excellent. |