Detail of "1710-98-1"

Reference

N-(Benzimidazol-2-yl)arylcarboxamides as ultraviolet light absorbers

N-(Benzimidazol-2-yl)arylcarboxamides as ultraviolet light absorbers. Grier, Nathaniel (Merck and Co., Inc., USA). U.S. US 4011236 8 Mar 1977, 12 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C07D235-30. NCL: 260309200. APPLICATION: US 68-758601 9 Sep 1968. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) Section cross-reference(s): 25, 26, 28 N-(Benzimidazol-2-yl)arylcarboxamides (I, R1 = arom.Several substances like 57489-91-5 may be metioned in this study. radical with 1-3 nuclei, ring-substituted arom. radical, arom. heterocyclic radical; R2 = H, Me, aliph. or arom. acyl) were prepd. by condensing an aminobenzimidazole with an arom. acid halide. These compns. are useful as UV light absorbers in plastics, fibers, sun tan lotions, etc. Thus, p-tert-butylbenzoic acid [98-73-7] was chlorinated with thionyl chloride to give p-tert-butylbenzoyl chloride [1710-98-1], which was condensed with 2-aminobenzimidazole [934-32-7] to give N-(benzimidazol-2-yl)-4-tert-butylbenzamide (I, R1 = 4-tert-butylphenyl, R2 = H) [25737-69-3]. .

N-(Benzimidazol-2-yl)arylcarboxamides as ultraviolet stabilizers

N-(Benzimidazol-2-yl)arylcarboxamides as ultraviolet stabilizers. Grier, Nathaniel (Merck Sharp Dohme Res. Lab., Merck and Co., Inc., Rahway, N. J., USA). J. Coat. Technol., 48(623), 50-7 (English) 1976. 1710-98-1 is also in the experiment. CODEN: JCTEDL. DOCUMENT TYPE: Journal CA Section: 42 (Coatings, Inks, and Related Products) Section cross-reference(s): 28, 73 Nine N-(benzimidazol-2-yl)carboxamides (I, R = aryl, substd. aryl) effectively decreased the color formation in polyurethane coating films when subjected to UV aging. Comparison with 2 com. UV stabilizers showed that N-(benzimidazol-2-yl)-4-tert-butylbenzamide [25737-69-3] gave significant protective action. The UV absorbances and substituent effects on the spectra were obtained and compared for 19 I derivs. .