| 摘要 |
<p>732,284. Inks. NATIONAL CASH REGISTER CO. March 16, 1953 [April 23, 1952], No. 7179/53. Class 146(3). [Also in Groups VIII and XVI] The marking fluid for a transfer paper comprises a solution of 1 part of animal gelatine in 3 parts water heated to 150‹F. Into four parts by weight of this solution there is dispersed or emulsified three parts of a colourless solution of crystal violet lactone which is 3, 3 bis-(p-dimethylamino phenyl) - 6-dimethylamino phthalide mixed with an equal weight of bis-p(-dimethylamino phenyl) methane. The solution of crystal violet lactone and the methane compound is made by dissolving one and one-half parts, by weight, of crystal violet lactone and one and one-half parts of the methane compounded in 97 parts of chlorinated diphenyl which has a chlorine content averaging 48 per cent by weight. Other dye-stuffs, e.g. analine dyes, oily pigmented inks &c., may be used. To this emulsion while still hot is added particles of hard solid material, (See Group XVI). Reference has been directed by the Comptroller to Specifications 546,750 and 646,926, [both in Group VIII].</p> |
