Environmentally pollution-free anti-corrosion pigment...

Details Environmentally pollution-free anti-corrosion pigment... Environmentally pollution-free anti-corrosion pigment...

C - Chemistry, Metallurgy

09

C

C09C 1/02 (2006.01) C09C 3/06 (2006.01) C09D 5/08 (2006.01) C09D 17/00 (2006.01)

Patent

CA 2559947

A pollution-free rustproof pigment composition that does not contain lead, chromium and other hazardous heavy metal elements and does not contain zinc and water-soluble ions, excelling in rustproofness. The pollution-free rustproof pigment composition comprises a condensed calcium phosphate obtained by sintering a mixture of calcium component and phosphorus component wherein the molar ration of calcium to phosphorus, m=Ca/P, satisfies the relationship 0.50<m<1.00 at 180 to 350~C.

La présente invention a trait à une composition pigmentaire antirouille écologique qui ne contient ni plomb, ni chrome et ni d'autres éléments de métal lourd dangereux et ne contient ni zinc et ni ions hydrosolubles, présentant une excellente propriété antirouille. La composition pigmentaire antirouille écologique comporte un phosphate de calcium condensé obtenu par le frittage d'un mélange de constituant à base de calcium et de constituant à base de phosphore dans lequel le rapport molaire de calcium au phosphore, m=Ca/P, satisfait le relation 0,50<m<1,00 entre 180 et 350 ·C.

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