Claims
- 1. A pigment composition comprising
- A) a 1,4-diketopyrrolo�3,4-c!pyrrole pigment of formula ##STR8## wherein A and B are each independently of the other a group of formula ##STR9## wherein R.sub.1 and R.sub.2 are each independently of the other hydrogen, halogen or CN, and
- B) 0.1-20% by weight, based on the diketopyrrolopyrrole of formula I, of an acrylic resin, obtained by solution homopolymerisation of a monomer of formula ##STR10## wherein R.sub.3 is hydrogen or methyl and R.sub.4 and R.sub.5 are each independently of the other hydrogen, methyl or ethyl, and n is an integer from 1 to 6, or by solution copolymerisation of the same monomer with a monomer which is copolymerisable with said same monomer, wherein the homopolymerization or copolymerization is carried out in the absence of a nonionic active agent.
- 2. A pigment composition according to claim 1, wherein A and B are identical in the 1,4-diketopyrrolo�3,4-c!pyrrole pigment of formula I.
- 3. A pigment composition according to claim 2, wherein A and B are a group of formula ##STR11## wherein R.sub.1 is hydrogen, chloro or phenyl.
- 4. A pigment composition according to claim 1, which contains an acrylic resin B, which is obtained by solution homopolymerisation of a monomer of formula II, wherein R.sub.3, R.sub.4 and R.sub.5 are methyl and n is 1 or 2, in an mount of 4-10% by weight, based on the diketopyrrolo-pyrrole of formula I.
- 5. Organic material of high molecular weight coloured with a pigment composition as claimed in claim 1.
- 6. Organic material of high molecular weight according to claim 5, which is a paint system or a printing ink.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3574/93 |
Jan 1993 |
CHX |
|
Parent Case Info
This is a continuation-in-part of application Ser. No. 08/346,113, filed on Nov. 29 1994 abandoned.
US Referenced Citations (8)
Foreign Referenced Citations (4)
Number |
Date |
Country |
0022746 |
Jan 1981 |
EPX |
0201347 |
Nov 1986 |
EPX |
0466646 |
Jan 1992 |
EPX |
58-215461 |
Dec 1983 |
JPX |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
346113 |
Nov 1994 |
|