Ferric oxide pigment composition containing phosphate auxiliary ingredients and preparation method of ferric oxide pigment composition

Abstract

The invention discloses a ferric oxide pigment composition containing phosphate auxiliary ingredients. The composition consists of the following ingredients in weight percentage accounting for the total mass of the ferric oxide pigment composition: 45.0 to 65.0 weight percent of ferric oxide pigment, 2.0 to 10.0 weight percent of amphoteric phosphate wetting agents, 3.0 to 15.0 weight percent of anionic phosphate dispersing agents, 11.0 to 16.0 weight percent of functional auxiliary ingredients and the balance deionized water. The two kinds of phosphate auxiliary ingredients, i.e. the nionic phosphate dispersing agents and the amphoteric phosphate wetting agents are adopted for compounding, the wetting and dispersing performance of the ferric oxide pigment in water is improved, the particle diameter of pigment particles is small, the coloring capability is high, and the phenomena of pigment precipitation, obvious viscosity change and the like cannot occur after the long-time storage.

Description

technical field [0001] The invention relates to an iron oxide pigment composition and a preparation method thereof, in particular to an iron oxide pigment composition containing phosphate additives and a preparation method thereof. Background technique [0002] Iron oxide pigments include iron oxide yellow, iron oxide red, iron oxide brown, iron oxide black, magnetic iron oxide, mica iron oxide, transparent iron oxide yellow, transparent iron oxide red and many other varieties. Compared with organic pigments, iron oxide pigments have the following advantages: low production cost, low price, and little environmental pollution; strong resistance to light, weather, dirty gas and alkali; easy to disperse and high hiding power, so iron oxide pigments are used in coatings , building materials, plastics, paper, leather, rubber and other industries are widely used. Iron oxide pigments are the second most used inorganic pigments in the world after titanium self-powder. [0003] The...

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Problems solved by technology

However, the existing phosphate ester dispersants and wetting agents often have the defects of weak dispersing ability, large particles of prepared color paste, and poor storage stability. Stormer viscosity will change by more than 15KU within 1 to 3 months of storage at room temperature, which will cause great difficulties for the dispersion and application of color paste in paint, synthetic leather and other products; at the same time, iron oxide pigments have higher Poor tinting strength, high density, difficult grinding of particles, easy sedimentation of pigment particles during storage, etc. Iron oxide colorants prepared only with phosphate additives tend to have large particle size, low tinting power, and after a certain period of storage In the event of pigment particle precipitation and significant viscosity changes, it is necessary to use non-phosphate ester dispersing aids at the same time to prepare a relatively stable iron oxide water-based color paste

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