D--Application of paints, primers and specialty coatings containing Strontium
Chromate in the construction of aerospace and aeronautical parts, including aeroplanes / helicopters, spacecraft, satellites, launchers, engines, and for the maintenance of such constructions.
The big challenge is to successful develop alternatives to pigments like lead
chromates which provide the same quality, performance or durability required by coatings users, most of whom are SMEs operating in niche, industrial markets.
This process forms particles with a core made of lead
chromate sulfate and a shell of lead sulfate.
The global phase out of lead
chromates is an important step in strengthening Jotun's reputation as an environmentally responsible company, it says.
It is a big step, but we are confident that by substituting lead
chromates with safer, high performing alternatives, we can make a big difference.
There is also a consensus that water quenching or
chromate quenching stages impair the paint adhesion, therefore, the literature states that these stages must be avoided.
Workers in the
chromate industry are repetitively exposed to particulate
chromates (IARC 1990).
Based on these studies, we propose a mechanism for
chromate carcinogenesis that is primarily driven by the genomic instability paradigm.
Like
chromates, the rare earth compounds in the Deft primers are known corrosion inhibitors, but, when incorporated into primers by themselves, do not migrate on their own to heal damaged areas as do the
chromates.
Wide range of inorganic pigments include ultramarine blue, lead
chromates, chrome oxide, iron oxide, pearlescents, phosphoroescents, luminescents, cadmium, mixed metal oxides, titanium dioxide and predispersed flush pigments.
Researchers at the University of Rhode Island in Kingston have developed a new group of nontoxic, corrosion-resistant polymers that can serve as a replacement for
chromates.
Dominion Colour Corporation (DCC) has announced its acquisition of Compania Venezolana De Pigmentos (Cavenpi), a Valencia, Venezuela based producer of azo organic pigments and lead
chromates.
