Reference

Stabilizing mixture, containing urea and gossypol resin, for poly(vinyl chloride)

Stabilizing mixture, containing urea and gossypol resin, for poly(vinyl chloride). Askarov, M. A.; Dzhalilov, A. T.; Fatkhullaev, E.; Doncheva, E. F. (Tashkent Polytechnic Institute, USSR). U.S.S.R. SU 540885 30 Dec 1976 From: Otkrytiya, Izobret., Prom. Obraztsy, Tovarnye Znaki 1976, 53(48), 75. (Russian). (Union of Soviet Socialist Republics). CODEN: URXXAF. CLASS: IC: C08K003-32. APPLICATION: SU 75-2138952 27 May 1975. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) Phosphorus compds. (NaNH4HPO4 [13011-54-6], Na3PO4 [7601-54-9], or NaH2PO2 [7681-53-0]) increase the effectiveness of the title PVC [9002-86-2] stabilizer mixt.; typical mixts. contain phosphorus compd. 5, gossypol [303-45-7] resin 0.1-10, and urea [57-13-6] 0.1-2 parts.Except for chemicals metioned above, 7601-54-9 and 303-45-7 are also used. .

Bath and method for dip-coating a metal substrate with a tin-lead alloy

Bath and method for dip-coating a metal substrate with a tin-lead alloy. Davis, Thomas Francis (AMP Inc., USA). Ger. Offen. DE 2616409 25 Nov 1976, 10 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C23C003-00. PRIORITY: US 75-574979 6 May 1975. DOCUMENT TYPE: Patent CA Section: 56 (Nonferrous Metals and Alloys) Uniform Sn-Pb coatings are electrolessly deposited on metal substrates. The substrate is immersed in a bath having pH 0.5-1.0 and contg. a Sn2+ salt, >0.5 g Pb2+ salt/L, and S-contg. complexing agent. Thus, a 0.0044 mm thick Sn-Pb coating was deposited on Cu by immersing 5 min in a bath contg. SnCl2 20-40, PbCl2 2-6, NaH2PO2.H2O [7681-53-0] 10-100, thiourea [62-56-6] 40-100, and gelatin 1.0-4.0 g/L at 38-93.degree.. The pH of the bath was adjusted to 0.5-1.0 by addn. of 40-100 mL HCl. A conventional, Pb-free bath produced only a 0.0025 mm thick coating in 30 min.