Bismuth vanadate pigments

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Gerhard Pfaff
Keyword(s):  
Cadmium Sulfide ◽  
Chemical Resistance ◽  
Bismuth Vanadate ◽  
Tetragonal Structure ◽  
Lead Chromate ◽  
Greenish Yellow ◽  
Application Characteristics ◽  
Yellow Pigments

Abstract Bismuth vanadate pigments belong to the most important inorganic yellow pigments since their market introduction in the 1970s. They have substituted the greenish yellow lead chromate and cadmium sulfide pigments in a considerable number of applications. Bismuth vanadate pigments are based on bismuth vanadate with monoclinic or tetragonal structure. Their composition ranges from pure BiVO4 up to the mixed pigment 4BiVO4▪3Bi2MoO6, where molybdenum is incorporated in the structure. Bismuth vanadate pigments are characterized by excellent optical and application characteristics in particular regarding brightness of shade, hiding power, tinting strength, weather fastness, and chemical resistance.

Cadmium sulfide / selenide pigments

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Gerhard Pfaff
Keyword(s):  
Cadmium Sulfide ◽  
Bismuth Vanadate ◽  
Red Pigments ◽  
Wurtzite Lattice ◽  
Yellow Orange ◽  
Application Characteristics ◽  
Substitute Products

Abstract Cadmium sulfide and selenide pigments (cadmium pigments) belong to the inorganic yellow, orange and red pigments. Cadmium sulfide pigments are based on the wurtzite lattice, where cadmium can be partially substituted by zinc or mercury and sulfide by selenide. Cadmium pigments are characterized by excellent optical and application characteristics in particular regarding brightness of shade, hiding power, tinting strength, and weather fastness. The declining use of cadmium-containing materials in the last decades is a result of the environmental discussion and the development of less problematic substitute products, especially of bismuth vanadate and high-value organic, temperature-stable yellow and red pigments.

Improved coloristic properties and high NIR reflectance of environment-friendly yellow pigments based on bismuth vanadate

2018 ◽  
Vol 44 (18) ◽  
pp. 22731-22737 ◽  
Author(s):  
Slobodan D. Dolić ◽  
Dragana J. Jovanović ◽  
Dragana Štrbac ◽  
Ljubica Đačanin Far ◽  
Miroslav D. Dramićanin
Keyword(s):  
Bismuth Vanadate ◽  
Environment Friendly ◽  
Yellow Pigments

Bright greenish-yellow pigments based on Sc2−Fe O3 solid solutions with bixbyite structure

2019 ◽  
Vol 109 ◽  
pp. 190-194 ◽  
Author(s):  
Hideki Hashimoto ◽  
Kotaro Sayo ◽  
Hidetaka Asoh ◽  
Tatsuo Fujii ◽  
Mikio Takano ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Greenish Yellow ◽  
Yellow Pigments

Poisoning by Cotton Dyed with Lead Chromate

1889 ◽  
Vol 28 (718supp) ◽  
pp. 11478-11478
Author(s):  
T. H. Weyl
Keyword(s):  
Lead Chromate

Surface Modification of Poly (alkyl/Arylphosphazene) Thin Films

2000 ◽  
Vol 629 ◽  
Author(s):  
John V. St. John ◽  
Patty Wisian-Neilson
Keyword(s):  
Thin Films ◽  
Surface Modification ◽  
Chemical Resistance ◽  
Chemical Properties ◽  
Inorganic Polymers ◽  
Thin Polymer Films ◽  
Hydrophilic Interactions ◽  
Carboxylic Acid Groups ◽  
Polymer Interface ◽  
Thin Polymer

ABSTRACTPoly (methylphenylphosphazene) (PMPP) is an example of a unique class of inorganic polymers with alternating – (P=N)– backbones. Chemical modification of bulk PMPP can result in changes of physical properties such as chemical resistance, onset temperature of thermal degradation, elasticity, and flexibility. Surface modification of PMPP allows tailoring of the chemical properties at the polymer interface while maintaining the integrity of the bulk polymer. In this research, PMPP thin films were treated to form carboxylate or carboxylic acid groups at the surface. Surface modification was monitored by following changes in contact angle. The hydrophobic/hydrophilic interactions of carboxylated PMPP surfaces allow for mesoscale interactions of thin polymer films.

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