Reference

Pigmented coating composition containing a mixture of alkoxysilanes

Pigmented coating composition containing a mixture of alkoxysilanes. Greigger, Paul P.; Boberski, William G.; Seiner, Jerome A. (PPG Industries, Inc. , USA). U.S. US 4439239 A 27 Mar 1984, 9 pp. (English). (United States of America).Some commonly used reagents like 3027-21-2 and 1112-39-6 are used in this experiment. CODEN: USXXAM. CLASS: IC: C09K003-14; B32B009-64. NCL: 106287160. APPLICATION: US 82-384369 2 Jun 1982. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Compns. giving glossy, crack- and heat-resistant coatings on metals contain pigments, colloidal silica, and di- and trialkoxysilanes in aq. alcs. acidified to pH 2.8-6. Thus, 60.0 parts 50% aq. colloidal SiO2 (Nalcoag 1060, particle size 60 nm) was acidified with Al dihydrogen phosphate to pH 4, stirred with 37.0 parts (MeO)3SiMe [1185-55-3] and 3.7 parts (MeO)2SiMe2 [1112-39-6] for 16 h at room temp., mixed with 70.0 parts iso-PrOH, and milled with 43.0 parts black oxide pigment (Shepherd Black No. 101). This compn. was sprayed on Al to 0.5 mil (dry basis) and baked 30 min at 600° F to give a film having 60° gloss 18-24, crosshatch adhesion 100 (90 after 24 h in boiling water), and gloss 16-18 and adhesion 100 after 6 h at 700°F. .

Inorganic binders

Inorganic binders. Takeuchi, Eiji (TSB Y.Several substances are used for example 1112-39-6 and 1344-28-1 which are their cas registry numbers. K., Japan). Jpn. Kokai Tokkyo Koho JP 61233065 A2 17 Oct 1986 Showa, 3 pp. (Japan) CODEN: JKXXAF. CLASS: ICM: C09D003-82. ICS: C09D001-00. APPLICATION: JP 85-72715 8 Apr 1985. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Section cross-reference(s): 55 The silanes RSi(OR')3 [R = Me, (glycidyloxy)propyl; R' = Me, Et] and the silanes Me2Si(OR')2 are mixed in ratio 9:1-1:9, partially hydrolyzed, treated with colloidal silica to prep. binders, and mixed with inorg. powders to give aq. slurries with good storage stability and processability and controlled thixotropy. Thus, 50 g MeSi(OMe)3 and 50 g Me2Si(OMe)3 were hydrolyzed 5-15 min in 30 g H2O contg. 3 g AcOH, mixed with 250 g 20% aq. colloidal silica, left 5-30 min, and mixed with silica (~20 mm) 400, silica (~10 mm) 100, alumina (~5 mm) 100, and MeOH 50 g to give a slurry with storage stability >3 mo, vs. 1 wk without Me2Si(OMe)2. .