Detail of "20824-56-0"

Reference

Thixotropic anaerobic adhesives

Thixotropic anaerobic adhesives. (Okura Industrial Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 58191775 A2 9 Nov 1983 Showa, 9 pp. (Japanese). (Japan).Chemicals with cas numbers 90062-65-0 and 90062-64-9 also play role. CODEN: JKXXAF. CLASS: IC: C09J003-14. APPLICATION: JP 82-74615 6 May 1982. DOCUMENT TYPE: Patent CA Section: 38 (Plastics Fabrication and Uses) The title adhesives requiring no thixotropic agent comprises (A) a polyurethane-polymethacrylate from hexamethylene diisocyanate (I), a glycol, and a hydroxy methacrylate (NCO/OH mol ratio 1) 5-95, (B) a methacrylate ester 5-95, (C) an aminopolycarboxylic acid or its ester 0.001-0.1, (D) NH3 [7664-41-7] or an org. amine 0.001-5, and (E) an anaerobic curing catalyst 0.1-10 parts. Thus, a mixt. of 8:1:5 (molar) hydroxypropyl methacrylate-ethylene glycol-I copolymer 30, trimethylolpropane trimethacrylate (II) 70, and 28% aq. NH3 0.6 part, contg. 50 ppm diammonium EDTA [20824-56-0] was heated at 80° for ~1 h and mixed with 1.5 part o-benzosulfimide-1,2,3,4-tetrahydroquinoline compd. in 1 part DMF to give an adhesive exhibiting viscosity (at 23°) 3788.8 cP at 2.5 rpm and 1146.9 at 20 rpm, pot life 310 days at 50°, cure time 28 min at 30° when applied to a steel bolt-nut, (30 min, for the aged sample at 50° for 10 days), reverse torque 190 kg-cm after 24 h from application at 23° (175 kg-cm for the aged sample), compared with 4608 cP, 857.6 cP, 310 days, 65 min (>2 h), 20 kg-cm (20 kg-cm), resp., for II adhesive contg. powd. silica as a thixotropic agent. .

Solution for precision etching of iron

Solution for precision etching of iron.Some chemicals with cas registry numbers like 7705-08-0 and 7439-89-6 are also used. Myakinenkov, V. I.; Nikitina, M. A.; Abaturov, A. B. (USSR ). U.S.S.R. SU 1070210 A1 30 Jan 1984 From: Otkrytiya, Izobret., Prom. Obraztsy, Tovarnye Znaki 1984, (4), 103. (Russian). (Union of Soviet Socialist Republics). CODEN: URXXAF. CLASS: IC: C23F001-04; C23G001-06. APPLICATION: SU 81-3337734 17 Sep 1981. DOCUMENT TYPE: Patent CA Section: 55 (Ferrous Metals and Alloys) The etching soln. with increased stability and high reproducibility contains: (a) EDTA [60-00-4] or EDTA diammonium salt [20824-56-0] 5-20 g/L and (b) a multibasic hydroxycarboxylic acid comprising malic acid [6915-15-7], tartaric acid [87-69-4], or citric acid [77-92-9] 5-10 g/L; and FeCl3 20-50 g/L with water to make 1 L. .