Reference

Triazine-urea grease thickeners

Triazine-urea grease thickeners. Wulfers, Thomas F. (Shell Oil Co., USA). U.S. US 4026890 31 May 1977, 6 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C07D251-70. NCL: 260249600. APPLICATION: US 75-635532 26 Nov 1975. DOCUMENT TYPE: Patent CA Section: 51 (Fossil Fuels, Derivatives, and Related Products) Section cross-reference(s): 28 I (R = C16-22 hydrocarbyl, R1 = H or Me, n = 0 or 1) are effective as high-temp. grease thickeners. These triazine-urea compds. are prepd. by the reaction of melamine [108-78-1] with an alkyl isocyanate to give a ureido-s-triazine intermediate, followed by the reaction of the intermediate with a dinuclear arom. 108-78-1 which is the cas registry number is also used here. diisocyanate. Thus, a soln. of 12. 108-78-1 is the cas registry number of certain chemical which is used as reagents here.6 g melamine in 120 mL DMF was heated to boiling, and 29.5 g octadecyl isocyanate [112-96-9] was added. The mixt. was refluxed 1 h and filtered to give 40 g 4,6-diamino-2-(octadecylureido)-s-triazine (II) [20103-66-6]. 4,4'-Diisocyanato-3,3'-dimethylbiphenyl [91-97-4] was added to 21 g II in 300 mL xylene, and the mixt. was refluxed for ~12 h and cooled. Removal of the solvent by a rotary evaporator and washing with ether gave I (R = octadecyl, R1 = Me, n = 0 (III) [67080-23-3]. A grease prepd. from 445.0 g neutral oil and 55.0 g III had an ASTM dropping point of 505°F and an ASTM worked penetration (D 217, 60 strokes) of 290. ..

Heat-developable silver halide photographic material containing crosslinking agent

Heat-developable silver halide photographic material containing crosslinking agent. Takeyama, Toshihisa (Konica Minolta Holdings Inc., Japan). Jpn. Kokai Tokkyo Koho JP 2004009583 A2 15 Jan 2004, 62 pp.Chemicals with cas numbers 643745-66-8 and 91-97-4 also play role. (Japanese). (Japan). CODEN: JKXXAF. CLASS: ICM: B41M005-30. ICS: B41M005-26; G03C001-498; G03C001-76; G03C005-08; G03D013-00. APPLICATION: JP 2002-167087 7 Jun 2002. DOCUMENT TYPE: Patent CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes) In the material comprising a support successively coated with an image-forming layer contg. non-photosensitive Ag salt and a binder and a protective layer, the material contains a crosslinking agent whose content increases from the support side to the uppermost layer. In the material, the image forming layer and the protective layer contain a binder and a crosslinking agent and are characterized by (1) A < B (A = ratio of the crosslinking agent to binder in the image forming layer; B = that in the protective layer), (2) D1/C1 ￡ D2/C2 and 0 < D2/C2, (3) 0.05￡ D2/C2 ￡5.0. (C1 = no. of functional groups of the binder reactable with the crosslinking agent in the image forming layer; C2 = that in the protective layer; D1 = no. of functional groups of the crosslinking agent reactable with the binder in the image-forming layer; D2 = that in the protective layer), or (4) d1 < d2 (d1 = soly. parameter of the crosslinking agent in the image-forming layer; d2 = that in the protective layer). Ag image is formed by (a) imagewise heating or (b) imagewise exposing and then heating under dark. Clear images without pptn. of the ingredients nor interference strip are obtained. .