Sodium Hydroxide → Aluminum chloride, hexahydrate

Into 1000 ml of water is dispersed 40 g of iron oxide red. 7.79 g Of Rondis R and 1.05 g of sodium hydroxide are separately dissolved at 70° C. in 100 ml of hot water to be added to the dispersion of iron oxide red. A solution of 2.11 g of aluminium chloride in 50 ml of water is added gradually to the mixture under stirring, and stirring is continued for 30 minutes. The precipitate is recovered by filtration, washed with water and dried, thus resulting in iron oxide red with exceedingly superior oil dispersability, improved chroma and brightness and gloss.

1. stirringstirring
2. filtrationThe precipitate is recovered by filtration
3. washwashed with water
4. customdried
5. customthus resulting in iron oxide red with exceedingly superior oil dispersability

ORDレコード

ord-c2569a31ed054b64902bc6b2cf13e25e

出典データセット

uspto-grants-1983_01

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US04368161