| 释义 |
phthalocyanine Chem.|fθæləʊˈsaɪəniːn|
[f. phthalic a. + -o + cyanine.]
a. A greenish-blue crystalline porphyrin, C32H18N8, or any of its substituted derivatives.
b. Any of the metal chelate complexes of these, which form a large and important class of pigments and dyes ranging in colour from green to blue.
1933R. P. Linstead in Rep. Brit. Assoc. Adv. Sci. 465 When phthalimide is heated with certain metals,..in a current of ammonia, a complex reaction occurs with the formation of highly coloured substances of a novel type. These have been named phthalocyanines from their origin and deep-blue colour,..The metal may be eliminated from the magnesium compound..to yield phthalocyanine, the parent substance of the group. 1942Endeavour I. 80/2 Phthalocyanines, themselves entirely products of the chemist's skill, have resemblances to two important substances which occur abundantly in nature. 1961Cockett & Hilton Dyeing of Cellulosic Fibres v. 207 Copper phthalocyanine is the important pigment Monastral Blue BS, the lead compound being Monastral Green. 1972Rys & Zollinger Fund. Chem. & Applic. Dyes vii. 97 Because of their good fastness properties phthalocyanines are suitable for almost all processes in which pigments are used.
c. phthalocyanine blue (also with capital initials), copper phthalocyanine, an important blue pigment; phthalocyanine green (also with capital initials), a chlorinated (or brominated) derivative of copper phthalocyanine, important as a green pigment.
1942E. R. Allen in J. J. Mattiello Protective & Decorative Coatings II. viii. 261 Likewise phthalocyanine green shows a somewhat similar relationship to orthodox pigments. 1947L. S. Pratt Chem. & Physics Org. Pigments ii. 8 Other pigments which also contributed to this change were..very recently the benzidine yellows and phthalocyanine blues and greens. 1967V. Strauss Printing Industry ix. 592/2 The development of phthalocyanine blue, perhaps better known under its duPont trade-mark as Monastral blue, was one of the greatest achievements in the field of pigments. 1968Kirk & Othmer Encycl. Chem. Technol. (ed. 2) XV. 491 Phthalocyanine green (Pigment Green 7, CI 74260) is a polychlorinated copper phthalocyanine containing about fourteen atoms of chlorine. The most usual shade is the G type although there are several shades in the G range, representing slight variations in degree of chlorination or particle size and shape. Ibid., Two yellower shades of green are available as Phthalocyanine Green 27... In these types, part of the chlorine has been replaced by bromine. 1970[see Monastral]. 1972Materials & Technol. V. xi. 359 Phthalocyanine blues are intense blues which are not used in full colour because bronzing develops... Two forms are used, beta phthalocyanine blue of relatively green shade,..and the less stable alpha phthalocyanine blue, of a redder shade. |