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Color-Sensitive Gelatin Plates
C. A. 1922, 16, 2085 dealt with the constitution and sensitizing of the isocyanins. S. Palkin and M. Harris, J. Ind. Eng. Chem. 1922, 14, 704; absi. J. L. b. 1922, 121, 951 described the preparation of the intermediates used in making isocyanins. Cf. S. Palkin, U.S.P. 1,437,674, 1922. J. E. Harris and \V. J. Pope, J. C. S. 1922, 121, 1029; abst. C. A. 1922, 16, 2645; Sci. Tech. Ind. Phot. 1922, 2, 86 described the preparation of isoquinolin and isoquinolin reds, and methyl and ethylisoquinolin red, which are also sensitizers, but not very soluble in water. R. Bing, "Ueber einige neue Isocyanine und deren Einwirkung auf Bromsilbergelatine," Berlin, 1914; Phot. Ind. 1914, 1050; Phot. J. Amer. described the preparation of bases and isocyanins, most of which had already been prepared by Meister, Lucius and Briming. Cf. K. Kieser, Zeits. wiss. Phot. 1905, 3, 6. W. Konig, Ber. 1922, 55, 3923; abst. J. S. C. I. 1922, 41, 934A; J. C. S. 1922, 121, 1188 confirmed the structure of the pinacyanols as given by Mills and Hamer. Cf. W. H. Mills and J. L. B. Smith, J. C. S. 1922, 121, 2725, on the reactivity of methyl groups with the isocyanins. J. M. Hamer, J. C. S. 1923, 123, 246; abst. C. A. 1923, 17, 1642 dealt with some derivatives of the methylenedi-quinaldins and their relation to the carbocyanins. As to the constitution of pinacyanol see O. Fischer, J. prakt. Chem. 1918, ii, 98, 204; Wise, Adams and Stewart, J. Ind. Eng. Chem. 1919, 11, 460; \Y. H. Mills and R. S. Wishart, J. C S. 1920, 117, 579. W. H. Mills, J. Harris and H. Lambourne, J. C. S. 1922, 121, 1509 treated of the preparation of quinaldin. \Y. H. Mills and K. Braunholz, J. C. S. 1922, 121, 1489 treated of the virtual tautomerism of the thiocyanins. K. L. Moudgill, J. C. S. 1922, 121, 1509 treated on brominated isocyanins, and showed that the introduction of the bromine molecule lowers the sensitizing power. M. Giua, Gazetta, 1922, 52, i, 349; abst. J. C. S.
1922, 121, 681 ; C. A. 1922, 16, 2690 described a new red quinolin dye, but gave no data as to sensitizing. S. Palkin, J. Ind. Eng. Chem. 1923, 15, 379; abst. J. C. S.
1923, 123, i, 591 ; C. A. 1923, 17, 1889, described the preparation of dicyanin A. E. Q. Adams and H. L. Haller, J. Amer. Chem. Soc. 1920, 42, 2389; abst. J. S. C. I.
1920, 40, 75A; J. C. S. 1921, 119, 53 gave the method of making isocyanin dyes from 4-methyl-quinolin, etc. by treatment with hot strong alcoholic alkalis. L. A. Mikeska, J. Amer. Chem. Soc. 1920, 42, 2396; abst. J. C. S. 1921, 119, 54; J. S. C. I.
1921, 40, 75 A detailed the preparation of 4-methyl-quinolin. Cf. O. Fischer, G. Scheibe, P. Merkel and R. Miiller, J. prakt. Chem. 1919, (ii) 91; abst. J. C. S. 1921, 119, 55. L. A. Mikeska and E. Q. Adams, J. Amer. Chem. Soc. 1920, 42, 2394; abst. J. C. S. 1921, 119, 54 gave methods for the preparation of dicyanin A nitrate and iodide. E. Q. Adams and H. L. Haller, J. Amer. Chem. Soc. 1920, 42, 2661 ; abst. J. C. S. 1921, 119, 129; J. S. C. I. 1920, 40, 75A gave the manufacture of kryptocyanin. Cf. U.S.P. 1,374,871; 1,374,872; abst. J. S. C. I. 1921, 40, 413A; C. A. 1921, 15, 2799; Sci. Tech. Ind. Phot. 1921, 1, 96. A. G. Scheibe and E. Rossner, Ber. 1921, 54, (B) 786; abst. J. C. S. 1921, 119, 457 described quinolylmethane, the isocyanins and quinolin red. W. H. Mills and R. C. Odams, J. C. S. 1924, 125, 1913; abst. Sci. Ind. Phot. 1924, 4, 190, dealt with the synthesis of 2 :4'-carbocyanins. J. H. Hewitt, "Synthetic coloring matters; dyestuffs derived from pyridine, quinoline, acridine and zanthene," London, 1922. C. Hollins, "The synthesis of nitrogen ring compounds," London, 1924. F. M. Hamer, on the reduction of the carbocyanins, J. C. S. 1925, 127, 271 ; Abstracts 1925, 1305. O. Fischer, E. Diepolder & E. Wolfel, J. prakt. Chem. 1925 (ii), 109, 59, 69; abst. C. A. 1925, 19, 1279; J. S. C. I. 1925, 44, i438 deal with 4-aminoquinolins. O. Fischer, A. Miiller & A. Yilsmeier, J. prakt. Chem. 1925 (ii), 109, 69 deal with the synthesis of 4-chloroisoquino-cyanins.
The following deal with the use of color-sensitive plates or sensitizing generally: W. Abney, Brit. J. Phot. 1887, 34, 196, 214, 225. T. Armstrong, ibid. 1889, 36. 345, 394, 411; edit. ibid. 1890, 37, 162. J. V. Elsden, ibid. 1896, 43, 711. Eder, ibid. 1884, 31, 813; 1885, 32, 8. J. S. Gibson, Phot. Times. 1897, 27, 101; Anthony's Phot. Bull. 1896, 27, 184. C. A. Swinton, Anthony's Phot. Bull. 1885, 16, 194, 226; Phot. Times, 1884, 14, 200. J. Carbutt, Phot. Times, 1891, 21, 373. G. Cramer, ibid. 1891, 21, 384. P. C. Duchochois, ibid. 1894, 24, 6, 41, 55, 75, 86, 104, 119. L. Tranchant, ibid. 1894, 25, 233. C. Scolik, Phot. Times, 1885, 15, 613, 656, 705; edit. ibid. 609. V. Schumann, ibid. 1886, 16, 109, 121, 130, 145, 208, 398. C. Ehrmann, Phot. Times, 1886, 16, 673. C. Sturenburg, ibid. 1887, 17, 16, 29, 48. }. Schnauss, ibid. 1888, 18, 616. \V. J. Harrison, ibid. 1890, 20, 210, 269, 368, 384. R. Namias, II Prog. Foto. 1917, 1, 33, 65, 97, 135, 158, 190, 254. A. S. Cory, M. P. News, 1917, 3642, 3812, 3968, 4131. E. Valenta, Brit. J. Phot. 1901, 47, 133. J. Husnik, Tahrbuch, 1901. 15, 56; Phot. J. 1901, 41, 364. Luppo-Cramer, Brit. J. Phot. 1901, 48, 675. T. T. Baker, ibid. 1904, 51, 289, 342, 867; Amat. Phot. 1906;