FIELD: chemistry.
SUBSTANCE: method of producing the pigment involves introduction of iron (II) phosphate solution and phosphoric acid into a suspension of red iron oxide pigment and treating the mixture with ammonia solution to pH 5.5-8, filtration, washing and drying.
EFFECT: invention increases opacity of the pigment.
1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING PHOSPHATE-CONTAINING PIGMENT | 2010 |
|
RU2448996C2 |
| METHOD OF PRODUCING IRON PHOSPHATE-CONTAINING PIGMENT | 2010 |
|
RU2451705C2 |
| METHOD OF MAKING IRON PHOSPHATE-CONTAINING PIGMENT | 2007 |
|
RU2389746C2 |
| METHOD OF PRODUCTION OF MODIFIED RED IRON OXIDE PIGMENTS | 2006 |
|
RU2309898C1 |
| METHOD OF OBTAINING IRON OXIDE PIGMENTS | 2017 |
|
RU2655336C1 |
| METHOD OF PREPARING SHELL PIGMENT | 1996 |
|
RU2106372C1 |
| METHOD FOR PREPARING IRON-OXIDE PIGMENTS | 2001 |
|
RU2209820C2 |
| METHOD OF OBTAINING IRON OXIDE PIGMENTS | 2017 |
|
RU2656047C1 |
| METHOD OF PREPARING SEED FOR DIRECT CRYSTALLIZATION OF RED IRON OXIDE | 0 |
|
SU1713892A1 |
| IRON-OXIDE PIGMENT AND METHOD OF PRODUCING SAME | 0 |
|
SU1244158A1 |
