Ferro Corporation

Dmc2 Degussa Metals Catalysts Cerdec Ag

Cerdec Aktiengesellschaft Keramische Farben

Cerdec Aktiengesellschaft Keramischre Farben

Joseph E Sarver

George E Sakoske

Dennis R Gilmore

Stephen Rozwood

Terry J Detrie

Nicholas M Karpa

Srinivasan Sridharan

John J Maloney

Enos Ayres Axtell, Iii

Miroslav Novotny

Sean T Weir

A marking composition for forming marks or indicia on a substrate is provided for laser marking applications. The composition includes a glass frit, a carrier, and absorber particles. The glass frit includes alkali metal oxides, glass forming oxides, and one or more transition metal oxides. The glass frit is devoid of at least one of bismuth and zinc.

Colored glass frits and related methods for laser marking applications

A compounded polymer material that can be laser marked is provided. The compounded polymer material includes an enhancer of nitrides, carbides, silicides, or combinations thereof. Upon forming the compounded polymer material into an article and exposing it to laser radiation, the irradiated portion of the compounded polymer material absorbs the laser radiation, increases in temperature, and forms a mark in the article. A lightness value difference (&#x394;L) between the mark and the non-irradiated portion of the article has an absolute value of at least 5, and the lightness value difference between the mark and the non-irradiated portion is greater than if the polymer material did not include the enhancer.

Carbide, nitride and silicide enhancers for laser absorption

A universal or all-purpose laser marking composition for forming satisfactorily dark laser marks on a wide variety of substrates is provided. The marking composition comprises an enhancer of nitrides, carbides, silicides, and combinations thereof. The enhancer may be selected one or more of ferromanganese, ferrosilicon, FeSiwhere X can range from about 0.005 to 0.995, FeSi, MgFeSi, SiC, CaSi, (Co)Mo, MoSi, TiSi, ZrSi, WSi, MnSi, YSi, CuSi, NiSi, FeC, FeCand FeC, MoC, MoC, MoC, YC, WC, AlC, MgC, MgC, CaC, LaC, TaC, FeN, FeN, FeN, FeN, FeN, MoN, MoN, WN, WN, WN, and combinations thereof and combinations thereof. Upon disposing the marking composition on a substrate and exposing the marking composition to laser radiation, the marking composition absorbs the laser radiation, increases in temperature, chemically bonds with the substrate, and when formed on each of a metal, glass, ceramic, stone, and plastic substrates, the mark has a negative &#x394;L dark contrast value of at least &#x2212;1 compared to a mark formed by the marking composition without the enhancer.

Various laser marking compositions and related methods are described. The laser marking compositions include a molybdenum metal complex, a tungsten metal complex, or combinations thereof. Marks or other indicia formed on a substrate using the compositions and methods exhibit increased contrast and improved substrate bonding.

Laser absorbing compounds

Various laser marking compositions and related methods are described. The laser marking compositions utilize one or more populations of particles having certain average particle sizes or a range of sizes. Marks or other indicia formed using the compositions and methods exhibit increased contrast, improved substrates bonding, and greater dispersability.

Laser marking compositions and related methods

The present invention relates to additive, pigment or colorant materials which may be used for laser marking. The materials comprise oxides of bismuth and at least one additional metal. Preferred laser-markable bismuth-containing oxide compounds are of the formula Bi M O , where M is at least one metal selected from Zn, Ti, Fe, Cu, Al, Zr, P, Sn, Sr, Si, Y, Nb, La, Ta, Pr, Ca, Mg, Mo, W, Sb, Cr, Ba and Ce, x is from about 0.3 to about 70, y is from about 0.05 to about 8, and z is from about 1 to about 100. The bismuth-containing material may be dispersed in a substrate which is subsequently irradiated by a laser to provide a contrasting mark in the irradiated region.

Bismuth-containing laser markable compositions and methods of making and using same

Bismuth manganese oxide pigments are used as additives to various materials such as plastics, plastic or organic coating compositions, glass and ceramic coating compositions, and the like. The bismuth manganese oxide pigments preferably comprise Bi,Mn,O,crystallized in the orthorhombic crystal structure. The pigments possess improved reflectance characteristics, particularly in the IR region, and may reduce IR-induced heat buildup.

Bismuth manganese oxide pigments

Bismuth manganese oxide green pigments are used as additives to various materials such as plastics, plastic or organic coating compositions, glass and ceramic coating compositions, and the like. The green bismuth manganese oxide pigments preferably comprise Bi,MnO,crystallized in the cubic crystal structure. The pigments possess improved reflectance characteristics, particularly in the IR region, and may reduce IR-induced heat buildup.

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Washington, PA, United States of America

Joseph E Sarver