| 摘要 |
<p>1,224,819. Coloured polymer compositions. INTERNATIONAL BUSINESS MACHINES CORP. 16 Oct., 1968 [30 Nov., 1967], No. 49071/68. Headings C3P and C3R. [Also in Division D2] In making the transfer layer of a pressuresensitive transfer element (see Division D2), the following compositions are used:-(a) vinyl acetate/vinyl chloride copolymer, an ink composition consisting of a black pigment in rapeseed oil, and methylene chloride as solvent (Example 1); (b) as in (a) but the solvent is a mixture of methylene chloride and ethyl acetate (Example II); (c) alcohol-soluble polyamide, wood flour, a dyestuff, carnauba wax, an ink composition consisting of a black pigment, nigrosine oleate, methyl violet base and mixed fatty acid esters, and, as solvent, a mixture of ethanol and xylene (Example III); alcoholsoluble nylon, wood flour, an ink composition containing nigrosine oleate, methyl violet base, two black pigments and polyethylene glycol dilaurate, and ethanol (Example IV).</p> |
