US5074918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for conditioning organic pigments
Assignee: BASF Corp
•
Filing: 1990-07-05
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Granted: 1991-12-24
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Expires: 2010-07-05
Abstract
Abstract A process for conditioning organic pigments by milling or kneading said pigments in the presence of 0.05 to 25% by weight, based on the pigment to be milled, of at least one micronized wax. The process, in which the use of organic solvents may be dispensed with, yields in a single milling operation, pigments which are distinguished by excellent dispersibility and outstanding fastness properties.
Inventors
- 👤 Fridolin Babler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:27
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0004; C09B67/0008; C09B67/0013; C08; C08K; C08K9/00; C08K9/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
170 words
A process for conditioning organic pigments by milling or kneading said pigments at a temperature between 5° and 90° C. in the presence of 2 to 12% by weight, based on the pigment to be milled, of a micronized wax selected from the group consisting of a polyamide wax having a maximum particle size of 15 μm and an average particle size of 1 to 5 μm, a density between 0.9 and 1.1 g/cm 3 at 25° C., and a melting point above 130° C., a polypropylene wax and/or a polypropylene copolymer having a maximum particle size of 15 μm and an average particle size of 1.5 to 3.5 μm, a density between 0.9 and 1.1 g/cm 3 at 25° C., and a melting point above 130° C., and a polyethylene (high density)/polytetrafluoroethylene wax having a maximum particle size of 15 μm and an average particle size of 1.5 to 4.0 μm, a density between 0.9 and 1.15 g/cm 3 at 25° C., and a melting point above 100° C.
Claim 2
Dependent Claim
170 words
A process for conditioning organic pigments by milling or kneading said pigments at a temperature between 5° and 90° C. in the presence of 2 to 12% by weight, based on the pigment to be milled, of a micronized wax selected from the group consisting of a polyamide wax having a maximum particle size of 15 μm and an average particle size of 1 to 5 μm, a density between 0.9 and 1.1 g/cm 3 at 25° C., and a melting point above 130° C., a polypropylene wax and/or a polypropylene copolymer having a maximum particle size of 15 μm and an average particle size of 1.5 to 3.5 μm, a density between 0.9 and 1.1 g/cm 3 at 25° C., and a melting point above 130° C., and a polyethylene (high density)/polytetrafluoroethylene wax having a maximum particle size of 15 μm and an average particle size of 1.5 to 4.0 μm, a density between 0.9 and 1.15 g/cm 3 at 25° C., and a melting point above 100° C.
Claim 3
Dependent Claim
14 words
A process according to claim 1, wherein the milling is a dry salt milling.
Claim 4
Dependent Claim
13 words
A process according to claim 1, wherein the milling is an aqueous milling.
Claim 5
Dependent Claim
18 words
A process according to claim 1, wherein a texture improver is used in addition to the micronised wax.
Claim 6
Dependent Claim
38 words
A process according to claim 4, wherein the texture improver is selected from the group consisting of laurylamine or stearylamine, stearic acid, the amides, salts or esters thereof, epoxidised soybean oil, waxes, resin acids or an aliphatic 1,2-diol.
Claim 7
Dependent Claim
33 words
A process according to claim 1, wherein the pigments to be conditioned belong to the azo, diketopyrrolopyrrole, perylene, quinacridone, phthalocyanine, perinone, quinophthalone, isoindolinone, isoindoline, dioxazine, anthraquinone, thioindigo, methine, azomethine or metal complex series.
Claim 8
Dependent Claim
26 words
A process according to claim 6, wherein the pigments belong to the the azo, diketopyrrolopyrrole, perylene, phthalocyanine, perinone, isoindolinone, metal complex, quinacridone, anthraquinone, or dioxazine series.
Claim 9
Dependent Claim
18 words
A process according to claim 6, wherein the pigments belong to the quinacridone, anthraquinone, diketopyrrolopyrrole or dioxazine series.
Claim 10
Dependent Claim
21 words
A process for pigmenting high molecular weight organic material, which comprises the use of a pigment obtained according to claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-23 | 1995-06-24 | 1995-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-23 | 1999-06-24 | 1999-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-23 | 2003-06-24 | 2003-12-24 | $7700.00 | Window Closed / Lapsed |