| 摘要 |
1,051,616. Heat sensitive materials. R. KORESKA [trading as W. KORESKA]. June 5, 1963 [Nov. 19, 1962], No.22362/63. Heading G2C. A heat-sensitive material having a layer containing a salt of dithiocarbamic acid or an N-substituted derivative of dithiocarbamic acid, the cation of said salt not forming a coloured sulphide, and containing also another salt the cation of which forms a coloured sulphide and the anion is different from that of the first salt. The material may also contain of an amine or ammonium salt of a heat sensitive acid, an acid amide, a guanidine or a free amine. Zinc benzyl dithiocarbarmate and magnesium cyclo-pentamethylene dithiocarbamate are the specified dithiocarbamates and ferric stearate and ferric myristate are the exemplified second salts. |
