Use of nitrogen-contg. cobalt-metal complex chelate - as auto-oxidn. catalyst, opt. mixed with other component for air-drying unsatd. binder esp. for paint or coating
Номер патента: DE4032546A1
Опубликовано: 16-04-1992
Автор(ы): Heinrich Heinrichs, Peter Dr Moeckel, Wolfgang Dr Weissflog
Принадлежит: LINK GUENTER ING GRAD
Опубликовано: 16-04-1992
Автор(ы): Heinrich Heinrichs, Peter Dr Moeckel, Wolfgang Dr Weissflog
Принадлежит: LINK GUENTER ING GRAD
Реферат: Autoxidation catalyst (I) for oxidatively drying unsatd. binder contains N-contg. Co chelates (II) of the formula: (Co(Mn+)x(N)m)+(AP-)Y- (II); Co = Co ion; N = N-electron donor; n = 1, 2, 3 or 4; M = n-valent cation; m = 2.25-9; x = 3/n; A = anion; p = the anion charge; y = 5/p; and depending on the N-electron donor, m = 9 (1-dentate), m = 4.5 (2-dentate), m = 3 (3-dentate) or m = 2.25 (4-dentate). (II) is used alone, as mixt. and/or in combination with other conventional pro-oxidants. (I) is used in paints and coating compsns. in an amt. of 0.005-0.5, pref. 0.01-0.10% Co wrt. binder. The other driers are metal cpds. and these and (II) are used in a wt. ratio of 0.1:1 to 10:1. USE/ADVANTAGE - (I) is claimed for use in paints and coating compsns.. The latter include printing inks and compsns. for coating wood (prods.), plastics, metals, cement concrete and other materials and paper. (II) has a much lower Co content than usual and replaces the toxic siccative metal Pb, improving the quality in terms of toxicity discolouration and ageing and also saving the costly and strategic rare metal Co. (II) do not separate out on the surface of the hardened coating, so that even clear white and pastel tones with a streak-free gloss can be produced without difficulty.
Drier for air-drying coatings
Номер патента: AU2003230461A1. Автор: Fabrizio Micciche,Jacco Van Haveren,Everardus Arnoldus Oostveen,Rob Van Der Linde. Владелец: Ato BV. Дата публикации: 2003-11-17.