EP0243304A2
Expired / Lapsed
EP
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Surface modified pigment compositions
Assignee: BASF Schweiz AG
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Filing: 1987-04-02
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Granted: —
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Expires: 2007-04-02
Abstract
Abstract Surface modification of a variety of pigments, particularly quinacridone and pyrrolopyrrole pigments, and the pigments resulting therefrom whereby the pigment is treated with a solvent-free, basic dispersant selected from the group consisting of nitrogen-containing copolymers of the polyurethane series and with a dispersion-improving derivative of the primary pigment, and the resulting composition exhibiting enhanced performance in automotive and other finish systems.
Inventors
- 👤 Edward E. Jaffe
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 02:29
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/10; C09B; C09B68/00; C09B68/40; C09B68/44; C09B68/441; C09B67/00; C09B67/0001; C09B67/0004; C09B67/0008; C09B67/0013; C09B67/0033; C09B67/0034; C09B67/0036; C09B67/006
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
45 words
A pigment composition containing a) an organic pigment, b) 1 to 10 % of a dispersion improving derivative of said pigment and c) 3 to 20 % of a substantially solvent-free basic dispersant selected from the group consisting of nitrogen-containing copolymer of the polyurethane series.
Claim 2
Dependent Claim
45 words
A pigment composition containing a) an organic pigment, b) 1 to 10 % of a dispersion improving derivative of said pigment and c) 3 to 20 % of a substantially solvent-free basic dispersant selected from the group consisting of nitrogen-containing copolymer of the polyurethane series.
Claim 3
Dependent Claim
22 words
The composition of claim 1, wherein said organic pigment is a quinacridone or a substituted quinacridone or a solid solution of quinacridones.
Claim 4
Dependent Claim
11 words
The composition of claim 1, wherein said organic pigment is y-quinacridone.
Claim 5
Dependent Claim
12 words
The composition of claim 1, wherein said organic pigment is a 1,4-diketo-pyrrolopyrrole.
Claim 6
Dependent Claim
50 words
The composition of claim 1, wherein said organic pigment is a 1,4-diketo-pyrrolopyrrole of the formula I wherein A and B independently are phenyl or phenyl substituted by halogen, C 1 -C 6 alkyl, C 1 -C 6 alkoxy, Ci-C6alkylmercapto, trifluoromethyl, cyano, dimethylamino, diethylamino, Cz-C 6 alkoxycarbonyl, acetylamino, carbamoyl or sulfamoyl.
Claim 7
Dependent Claim
25 words
The composition of claim 1, wherein said organic pigment is a 1,4-diketo-pyrrolopyrrole of the formula I, wherein A and B independently are phenyl or p-chlorophenyl.
Claim 8
Dependent Claim
17 words
The composition of claim 1, wherein said copolymer has an amine value ranging from 5-15 mg KOH/g.
Claim 9
Dependent Claim
17 words
The composition of claim 1, wherein said copolymer is the product sold under the mark °DISPERBYK 160.
Claim 10
Dependent Claim
22 words
The composition of claim 1, wherein said dispersion improving derivative is a phthalimidomethyl, sulfonic acid or carboxybenz- amidomethyl derivative of said pigment.
Claim 11
Dependent Claim
22 words
The composition of claim 2, wherein said dispersion improving derivative is a phthalimidomethyl, sulfonic acid or carboxybenz- amidomethyl derivative of said quinacridone.
Claim 12
Dependent Claim
18 words
The composition of claim 4, wherein said dispersion improving derivative is a sulfonic acid derivative of said 1,4-diketo-pyrrolopyrrole.
Claim 13
Dependent Claim
80 words
A process for improving the rheological and stability characteristics of an organic pigment dispersion and the gloss and distinctness properties of a finish prepared therefrom which comprises treating said organic pigment with from about 1 to 10 % of a dispersion improving derivative of said pigment and from about 3 to 20 % of a substantially solvent-free basic dispersant selected from the group consisting of nitrogen-containing copolymers of the polyurethane series, said percentages being based on the weight of pigment.
Claim 14
Dependent Claim
80 words
A process for improving the rheological and stability characteristics of an organic pigment dispersion and the gloss and distinctness properties of a finish prepared therefrom which comprises treating said organic pigment with from about 1 to 10 % of a dispersion improving derivative of said pigment and from about 3 to 20 % of a substantially solvent-free basic dispersant selected from the group consisting of nitrogen-containing copolymers of the polyurethane series, said percentages being based on the weight of pigment.
References Cited (Backward Citations)
No citation records indexed.
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