| 摘要 |
1373250 Developing diazotype materials ADDRESSOGRAPH-MULTIGRAPH CORP 18 Nov 1971 [26 March 1971] 53684/71 Heading G2C A liquid developer for developing exposed two component diazotype material comprises 1-20 wt per cent of a fatty carboxylic acid having 16 to 18 carbon atoms and from 20-80 wt per cent of morpholine, piperidine or an alkyl morpholine or an alkyl piperidine, diethylenetriamine, N- aminoethylethanolamine or an amine of formula:- wherein R 1 is alkyl, cycloalkyl, alkaryl, alkylol, alkoxy or alkylolalkoxy and R 2 and R 3 are any of the groups specified for R 1 or hydrogen dissolved with or without water by a monohydric alcohol with at least 6 C atoms, a poly-hydric alcohol or a glycolether. The developer may be as disclosed in Specification 1143703 with oleic, stearic, psalmitic or a octadeca-(di or tri) enoic acid added. The developer may be used in the apparatus of Specification 1143702, the acid allowing more uniform distribution of the liquid. |
