Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...
Patent
1988-02-16
1989-12-19
Lieberman, Paul
Compositions: coating or plastic
Coating or plastic compositions
Metal-depositing composition or substrate-sensitizing...
106 1421, 1062871, 252512, 252519, C09D 510
Patent
active
048880566
ABSTRACT:
Shop primer compositions having improved properties comprise (a) fillers and pigments, at least 25 wt. % of which have conductive properties; (b) zinc powder in a weight ratio to fillers and pigments between 1:16 and 1:1; wherein the zinc, fillers and pigments are milled to a sufficient fineness; (c) anti-settling agents; (d) optionally, thickening agents; (e) a silicate-type binder, in an amount such that the weight ratio of the SiO.sub.2 content of the binder to the zinc, fillers and pigments is between 1:4 and 1:16; and (f) solvents.
When using the shop primer compositions of the present invention, the welding properties are improved and the health hazards during welding are reduced, without having to remove the primer layer at the welding area. The primer coatings are compatible with the welding techniques generally used in the heavy steel construction industry, including MIG/MAG welding in 3F position.
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patent: 4014703 (1977-03-01), Hayati et al.
patent: 4086096 (1978-04-01), McLeod
"The Use of Ethyl Silicate in Zinc Rich Paints", James R. Steinmetz, et al., pp. 138-143.
"Zinc Rich Coatings Technology", D. M. Berger, pp. 46-52.
"Economics of Zinc Coatings", D. M. Berger, pp. 59-61.
"Alkali Silicates in Surface Coatings", A. Pass, et al., pp. 54-88.
"Single-Package Zinc-Rich Coatings", T. Ginsberg, pp. 138-143.
Braeken Jozef
van der Kolk Cornelis E. M.
van der Poel Hendrik
Abokhair John K.
Caddell Michael J.
Cheairs M. Norwood
Labofina S.A.
Lieberman Paul
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