Process for the preparation of inclusion pigments

Details Process for the preparation of inclusion pigments Process for the preparation of inclusion pigments

1996-10-21

1998-05-19

Marcheschi, Michael

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106401, 106481, 106482, 423592, 423593, 423608, 423618, 423625, C09C 100, C09C 128, C09C 140

Patent

active

057530262

ABSTRACT:
Reaction spray process for preparing inclusion pigments by suspending the pigment to be encapsulated in an aqueous solution or suspension of a precursor of the inclusion material, spraying the suspension, with or without the addition of nitric acid and fuel, in a tubular reactor heated at from 850.degree. to 1100.degree. C., separating the inclusion pigment from the product stream and, if desired post-calcining the pigment at a temperature of at least 816.degree. C.

REFERENCES:
patent: 5149369 (1992-09-01), Eberts et al.
patent: 5177055 (1993-01-01), Kinsman et al.
patent: 5194089 (1993-03-01), Speer et al.
patent: 5252125 (1993-10-01), Speer et al.
patent: 5268337 (1993-12-01), Katz et al.
patent: 5614472 (1997-03-01), Riddle et al.
Abstract of EP 473,621 Oct. 5, 1990.

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