Aqueous process for preparation of modified beta quinacridone

Details Aqueous process for preparation of modified beta quinacridone Aqueous process for preparation of modified beta quinacridone

1992-09-14

1994-01-25

Bell, Mark L.

Compositions: coating or plastic

Materials or ingredients

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

106400, 106401, 546 49, 546 56, 546 57, C09B 4800

Patent

active

052812693

ABSTRACT:
Aqueous processes for the preparation of a new beta quinacridone modification possessing a magenta color having C.I.E. color space values in masstone of L=33-36, A=34-40 and B=8-15 starting with the crude pigment and comprising several milling and alternative deaggregation and recrystallization steps, the latter being facilitated at elevated temperatures aided by the presence of base and minor amounts of crystal growth auxiliaries, and the beta quinacridone modification having the indicated C.I.E. color space values.

REFERENCES:
patent: 2844484 (1958-07-01), Reidinger et al.
patent: 2844485 (1958-07-01), Struve
patent: 2844581 (1958-07-01), Manger et al.
patent: 2969366 (1961-01-01), Griswold et al.
patent: 4298398 (1981-11-01), Fitzgerald
patent: 4439240 (1984-03-01), Ganci
patent: 4541872 (1985-09-01), Jaffe
patent: 4760144 (1988-07-01), Jaffe
patent: 4857646 (1989-08-01), Jaffe

Affiliated with

Also associated with

Rating

Aqueous process for preparation of modified beta quinacridone does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Aqueous process for preparation of modified beta quinacridone, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aqueous process for preparation of modified beta quinacridone will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-725181