High strength fe-cr brown with excellent weathering

C - Chemistry – Metallurgy – 09 – C

Patent

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Details

C09C 1/22 (2006.01) C08K 3/00 (2006.01) C08K 3/22 (2006.01) C09C 1/24 (2006.01) C09C 1/34 (2006.01) C09D 7/12 (2006.01) C09D 11/02 (2006.01) C09D 11/16 (2006.01)

Patent

CA 2453800

One aspect of the invention relates to a brown pigment composition with excellent weathering resistance containing iron oxide, chromium oxide, and one or more alumina and/or silica components. Another aspect of the invention relates to a method of making a brown pigment particles. Yet another aspect of the invention relates to a plastic composition containing a major amount of a plastic material and a minor amount of a brown pigment composition containing iron oxide, chromium oxide, and one or more alumina and/or silica components.

Cette invention concerne notamment une composition de pigment brun présentant d'excellentes propriétés de résistance aux intempéries et contenant de l'oxyde de fer, de l'oxyde de chrome ainsi qu'un ou plusieurs composants alumine et/ou silice. Cette invention concerne également un procédé de préparation d'un pigment brun consistant à combiner de l'oxyde de fer, de l'oxyde de chrome ainsi qu'un ou plusieurs composants alumine et/ou silice pour former un mélange, puis à chauffer le mélange obtenu afin de produire des particules de pigment brun. En outre, cette invention porte sur une composition plastique contenant une grande quantité d'un matériau plastique et une petite quantité d'une composition de pigment brun contenant de l'oxyde de fer, de l'oxyde de chrome ainsi qu'un ou plusieurs composants alumine et/ou silice.

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