Patent US5453151A successfully refreshed from Google Patents.
US5453151A
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US
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Resinated 2,9-dimethylquinacridone
Assignee: BASF Corp
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Filing: 1994-01-25
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Granted: 1995-09-26
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Expires: 2014-01-25
Abstract
Abstract This invention relates to a resinated 2,9-dimethylquinacridone pigment, which is prepared by a process comprising (a) preparing an aqueous suspension containing a 2,9-dimethylquinacridone pigment, a mixture of water-soluble acid salts and a particle growth inhibitor, wherein the mixture of water-soluble acid salts consists essentially of from about 50 to about 95 parts by weight of a water-soluble resin acid salt, and from about 5 to about 50 parts by weight of a water-soluble salt of a napthenic acid or a dimeric acid, or a mixture thereof, (b) precipitating the mixture of acid salts from the suspension in the form of insoluble salts and (c) isolating the resinated 2,9-dimethylquinacfidone pigment from the suspension. The resinated 2,9-dimethylquinacridone pigment possesses excellent dispersability, color strength, saturation and heat stability. It is especially useful for coloring plastics, coatings and inks.
Inventors
- 👤 Fridolin Babler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:35
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0004; C09B67/0008; C09B67/0009; C09B67/001; C09B48/00
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
125 words
A process for preparing a resinated 2,9-dimethylquinacridone pigment, which process comprises (a) preparing an aqueous suspension comprising a small particle size 2,9-dimethylquinacridone pigment and a mixture of water-soluble acid salts, wherein the mixture of water-soluble acid salts consists essentially of from about 50 to about 95 percent by weight of a water-soluble resin acid salt, and from about 5 to about 50 percent by weight of a water-soluble naphthenic acid salt or a water-soluble dimeric acid salt, or a mixture thereof, (b) precipitating the mixture of acid salts from the suspension as insoluble salts and (c) isolating the resinated 2,9-dimethylquinacridone pigment from the suspension; wherein a pigment particle growth inhibitor is added to the suspension before, during or after precipitating the mixture of acid salts.
Claim 2
Dependent Claim
125 words
A process for preparing a resinated 2,9-dimethylquinacridone pigment, which process comprises (a) preparing an aqueous suspension comprising a small particle size 2,9-dimethylquinacridone pigment and a mixture of water-soluble acid salts, wherein the mixture of water-soluble acid salts consists essentially of from about 50 to about 95 percent by weight of a water-soluble resin acid salt, and from about 5 to about 50 percent by weight of a water-soluble naphthenic acid salt or a water-soluble dimeric acid salt, or a mixture thereof, (b) precipitating the mixture of acid salts from the suspension as insoluble salts and (c) isolating the resinated 2,9-dimethylquinacridone pigment from the suspension; wherein a pigment particle growth inhibitor is added to the suspension before, during or after precipitating the mixture of acid salts.
Claim 3
Dependent Claim
25 words
A process of claim 1 wherein the pigment particle growth inhibitor is present in the aqueous suspension before the mixture of acid salts is precipitated.
Claim 4
Dependent Claim
31 words
A process of claim 2 wherein the resin acid salt comprises a water-soluble salt of abietic acid or a water-soluble salt of a derivative of abietic acid or a mixture thereof.
Claim 5
Dependent Claim
16 words
A process of claim 2 wherein the resin acid is the sodium salt of pale rosin.
Claim 6
Dependent Claim
44 words
A process of claim 2 wherein the mixture of water-soluble acid salts consists of from 85 to 95 parts by weight of the resin acid salt and from 5 to 15 parts by weight of the naphthenic acid salt and/or the dimeric acid salt.
Claim 7
Dependent Claim
39 words
A process of claim 2 wherein the mixture of water-soluble acid salts consists of from 85 to 95 parts by weight of the resin acid salt and from 5 to 15 parts by weight of the naphthenic acid salt.
Claim 8
Dependent Claim
17 words
A process of claim 6 wherein the resin acid salt is the sodium salt of pale rosin.
Claim 9
Dependent Claim
21 words
A process of claim 2 wherein the aqueous suspension comprises from 5 to 10 percent by weight of the 2,9-dimethylquinacridone pigment.
Claim 10
Dependent Claim
33 words
A process of claim 2 wherein the aqueous suspension comprises from 5 to 20 parts by weight of the mixture of water-soluble acid salts per 100 parts by weight of the 2,9-dimethylquinacridone pigment.
Claim 11
Dependent Claim
33 words
A process of claim 2 wherein the aqueous suspension comprises from 8 to 18 parts by weight of the mixture of water-soluble acid salts per 100 parts by weight of the 2,9-dimethylquinacridone pigment.
Claim 12
Dependent Claim
29 words
A process of claim 2 wherein the aqueous suspension comprises from 1 to 6 parts of the particle growth inhibitor per 100 parts by weight of the 2,9-dimethylquinacfidone pigment.
Claim 13
Dependent Claim
25 words
A process of claim 2 wherein the particle growth inhibitor is a unsubstituted or substituted quinacridone sulfonic acid, phthalimidomethylquinacridone, imidazolylmethylquinacridone, pyrazolylmethylquinacridone, or mono- or di-alkylaminoalkylsulfonamidoquinacridone.
Claim 14
Dependent Claim
13 words
A process of claim 2 wherein said pigment particle growth inhibitor is phthalimidomethylquinacridone.
Claim 15
Dependent Claim
24 words
A process of claim 2 wherein the acid salts are precipitated by adding a cation which forms insoluble acid salts to the aqueous suspension.
Claim 16
Dependent Claim
15 words
A process of claim 14 wherein the cation is a calcium, magnesium or aluminum cation.
Claim 17
Dependent Claim
27 words
A process of claim 14 wherein the acid salts are precipitated by mixing the aqueous suspension with an aqueous solution containing a water-soluble salt of the cation.
Claim 18
Dependent Claim
17 words
A process of claim 16 wherein the water-soluble salt is calcium chloride, magnesium chloride or aluminum sulfate.
Claim 19
Dependent Claim
39 words
A process of claim 2 wherein the aqueous suspension is prepared by mixing an aqueous solution containing the dissolved mixture of water-soluble acid salts and the suspended particle growth inhibitor with a suspension of the 2,9-dimethylquinacridone pigment in water.
Claim 20
Dependent Claim
34 words
A process of claim 2 wherein the 2,9-dimethylquinacridone pigment is prepared from 2,9-diimethyl-6,13-dihydroquinacridone in dimethylsulfoxide by air oxidation in the presence of a base and a anthraquinone-2-sulfonic acid catalyst, followed by precipitation in methanol.
Claim 21
Dependent Claim
104 words
A resinated 2,9-dimethylquinacridone pigment, which pigment comprises a homogeneous blend consisting of 74 to 94 parts by weight of a small particle size 2,9-dimethylquinacridone pigment, from 1 to 6 parts by weight of a pigment particle growth inhibitor and from 5 to 20 parts by weight of a mixture of water-insoluble acid salts, the sum of the parts by weight being 100, which mixture of water-insoluble acid salts consists essentially of from 50 to 95 percent by weight of a water-insoluble resin acid salt and from 5 to 50 percent by weight of a water-insoluble naphthenic or dimetic acid salt or a mixture thereof.
Claim 22
Dependent Claim
104 words
A resinated 2,9-dimethylquinacridone pigment, which pigment comprises a homogeneous blend consisting of 74 to 94 parts by weight of a small particle size 2,9-dimethylquinacridone pigment, from 1 to 6 parts by weight of a pigment particle growth inhibitor and from 5 to 20 parts by weight of a mixture of water-insoluble acid salts, the sum of the parts by weight being 100, which mixture of water-insoluble acid salts consists essentially of from 50 to 95 percent by weight of a water-insoluble resin acid salt and from 5 to 50 percent by weight of a water-insoluble naphthenic or dimetic acid salt or a mixture thereof.
Claim 23
Dependent Claim
28 words
A resinated 2,9-dimethylquinacridone pigment of claim 20 wherein the mixture of water-insoluble acid salts consists of an insoluble salt of pale rosin and an insoluble naphthenic acid salt.
Claim 24
Dependent Claim
19 words
A resinated 2,9-dimethylquinacridone pigment of claim 20 wherein the water-insoluble acid salt is a calcium, magnesium or aluminum salt.
Claim 25
Dependent Claim
15 words
A resinated 2,9-dimethylquinacridone pigment of claim 20 wherein the pigment particle growth inhibitor is phthalimidomethylquinacridone.
Claim 26
Independent Claim
124 words
A method of coloring a high molecular weight organic material, which comprises incorporating an effective pigmenting amount of a resinated 2,9-dimethylquinacridone pigment into the high molecular weight organic material, wherein the resinated 2,9-dimethylquinacridone pigment comprises 100 parts by weight of a homogeneous blend consisting essentially of 74 to 94 parts by weight of a small particle size 2,9-dimethylquinacridone pigment, from 1 to 6 parts by weight of a pigment particle growth inhibitor and from 5 to 20 parts by weight of a mixture of water-insoluble acid salts which mixture consists of from 50 to 95 percent by weight of a water-insoluble resin acid salt and from 5 to 50 percent by weight of a water-insoluble naphthenic or dimeric acid salt or a mixture thereof.
Claim 27
Independent Claim
124 words
A method of coloring a high molecular weight organic material, which comprises incorporating an effective pigmenting amount of a resinated 2,9-dimethylquinacridone pigment into the high molecular weight organic material, wherein the resinated 2,9-dimethylquinacridone pigment comprises 100 parts by weight of a homogeneous blend consisting essentially of 74 to 94 parts by weight of a small particle size 2,9-dimethylquinacridone pigment, from 1 to 6 parts by weight of a pigment particle growth inhibitor and from 5 to 20 parts by weight of a mixture of water-insoluble acid salts which mixture consists of from 50 to 95 percent by weight of a water-insoluble resin acid salt and from 5 to 50 percent by weight of a water-insoluble naphthenic or dimeric acid salt or a mixture thereof.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-09-25 | 1999-03-27 | 1999-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-09-25 | 2003-03-27 | 2003-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-09-25 | 2007-03-27 | 2007-09-26 | $7700.00 | Window Closed / Lapsed |