Photostable yellow composite pigments and process for their prep

Details Photostable yellow composite pigments and process for their prep Photostable yellow composite pigments and process for their prep

1983-12-05

1985-06-18

Morris, Theodore

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

106193R, 106289, 106300, 524190, 534739, C08L 108, E09D 1100

Patent

active

045239533

ABSTRACT:
There are described organic-inorganic ternary composite pigments consisting of 70%-90% by weight of an inorganic binary titanium dioxide/aluminum hydrate component and, from 10% to 30% by weight, of a co-precipitated organic component consisting of an organic dye, containing in its structure at least one carboxylic and/or sulphonic acid function, having the formula: ##STR1## wherein R.sub.1 is selected from the group consisting of NO.sub.2 --SO.sub.3 H and --COOH; R.sub.2 is selected from the group consisting of NO.sub.2, --SO.sub.3 H, alkyl and alkoxyl; R.sub.3 is selected from the group consisting of H, halogen and alkyl; R.sub.4 and R.sub.5 are each selected from the group consisting of H, halogen, alkyl and alkoxyl; R.sub.6 is selected from the group consisting of H, halogen and alkoxyl; and wherein the --COOH and/or --SO.sub.3 H group of dye (I) is salified with metal cations.
The pigments are obtained by co-precipitation acidifying an aqueous solution and/or dispersion of acid dye (I) in sodium aluminate, in the presence of TiO.sub.2, maintained at 40.degree.-80.degree. C. and at pH=9.5-10.5, by then treating it with any aqueous solution of an alkaline-earth (Ca, Ma, Al, Ba, Sr) salt or of Mn or Zn.

REFERENCES:
patent: 1086155 (1914-02-01), Geldermann et al.
patent: 1788300 (1931-01-01), Huismann et al.
patent: 3520869 (1970-07-01), Stocker et al.
patent: 4084983 (1978-04-01), Bernhardt et al.

Affiliated with

Also associated with

Rating

Photostable yellow composite pigments and process for their prep does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Photostable yellow composite pigments and process for their prep, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photostable yellow composite pigments and process for their prep will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-978645