Patent US5741356A successfully refreshed from Google Patents.
US5741356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for surface-treated organic pigments
Assignee: Covestro LLC
•
Filing: 1996-12-20
•
Granted: 1998-04-21
•
Expires: 2016-12-20
Abstract
Abstract This invention relates to a process for preparing pigment compositions comprising (a) treating an organic pigment with (1) about 0.1 to about 100% by weight, relative to the organic pigment, of a sterically hindered and/or bulky primary amine, (2) 0 to about 100% by weight, relative to the organic pigment, of a surfactant, and (3) about 5 to about 15 parts by weight per part by weight of the organic pigment of a liquid in which the organic pigment is substantially insoluble, thereby forming a suspension of the surface-treated pigment composition in the liquid; (b) exposing the suspension to cavitating conditions; and (c) collecting the pigment composition.
Inventors
- 👤 Ibraheem T. Badejo
- 👤 Charles E. Shannon
- 👤 Guenter G. Franke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:46
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02; C09D11/03; C09D11/037; C09B; C09B67/00; C09B67/0001; C09B67/0004; C09B67/0008; C09B67/0011; C09B67/0014; C09B67/002
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
103 words
A process for preparing a pigment composition comprising (a) treating an organic pigment with (1) about 0.1 to about 100% by weight, relative to the organic pigment, of a sterically hindered and/or bulky primary amine, (2) 0 to about 100% by weight, relative to the organic pigment, of a surfactant, and (3) about 5 to about 15 parts by weight per part by weight of the organic pigment of a liquid in which the organic pigment is substantially insoluble, thereby forming a suspension of the surface-treated pigment composition in the liquid; (b) exposing the suspension to ultrasound; and (c) collecting the pigment composition.
Claim 2
Dependent Claim
103 words
A process for preparing a pigment composition comprising (a) treating an organic pigment with (1) about 0.1 to about 100% by weight, relative to the organic pigment, of a sterically hindered and/or bulky primary amine, (2) 0 to about 100% by weight, relative to the organic pigment, of a surfactant, and (3) about 5 to about 15 parts by weight per part by weight of the organic pigment of a liquid in which the organic pigment is substantially insoluble, thereby forming a suspension of the surface-treated pigment composition in the liquid; (b) exposing the suspension to ultrasound; and (c) collecting the pigment composition.
Claim 3
Dependent Claim
31 words
A process according to claim 1 wherein the organic pigment is treated with 5 to 20% by weight relative to the organic pigment, of a sterically hindered and/or bulky primary amine.
Claim 4
Dependent Claim
49 words
A process according to claim 1 wherein the sterically hindered and/or bulky primary amine (a)(1) is a tertiary alkyl primary amine having the formula ##STR3## wherein R 1 is a C 5 -C 30 (cyclo)aliphatic group, and R 2 and R 3 are independently C 1 -C 6 alkyl.
Claim 5
Dependent Claim
25 words
A process according to claim 1 wherein the sterically hindered and/or bulky primary amine (a)(1) is a rosin amine, a rosinylamine, or a derivative thereof.
Claim 6
Dependent Claim
17 words
A process according to claim 1 wherein the sterically hindered and/or bulky primary amine (a)(1) is dehydroabietylamine.
Claim 7
Dependent Claim
26 words
A process according to claim 1 wherein 6 to 12 parts by weight per part by weight of the organic pigment of liquid (a)(3) is used.
Claim 8
Dependent Claim
19 words
A process according to claim 1 wherein liquid (a)(3) is water, a water-miscible organic liquid, or a mixture thereof.
Claim 9
Dependent Claim
14 words
A process according to claim 1 wherein the pigment composition is collected by filtration.
Claim 10
Dependent Claim
36 words
A process according to claim 1 wherein step (b) is carried out using ultrasound at a frequency of about 15 to about 20,000 kilohertz at an intensity of about 20 to about 500 watts/cm 2 .
Claim 11
Dependent Claim
104 words
A pigment composition prepared according to a process comprising (a) treating an organic pigment with (1) about 0.1 to about 100% by weight, relative to the organic pigment, of a sterically hindered and/or bulky primary amine, (2) 0 to about 100% by weight, relative to the organic pigment, of a surfactant, and (3) about 5 to about 15 parts by weight per part by weight of the organic pigment of a liquid in which the organic pigment is substantially insoluble, thereby forming a suspension of the surface-treated pigment composition in the liquid; (b) exposing the suspension to ultrasound; and (c) collecting the pigment composition.
Claim 12
Dependent Claim
104 words
A pigment composition prepared according to a process comprising (a) treating an organic pigment with (1) about 0.1 to about 100% by weight, relative to the organic pigment, of a sterically hindered and/or bulky primary amine, (2) 0 to about 100% by weight, relative to the organic pigment, of a surfactant, and (3) about 5 to about 15 parts by weight per part by weight of the organic pigment of a liquid in which the organic pigment is substantially insoluble, thereby forming a suspension of the surface-treated pigment composition in the liquid; (b) exposing the suspension to ultrasound; and (c) collecting the pigment composition.
Claim 13
Dependent Claim
111 words
A pigmented macromolecular material containing as pigment a pigment composition prepared according to a process comprising (a) treating an organic pigment with (1) about 0.1 to about 100% by weight, relative to the organic pigment, of a sterically hindered and/or bulky primary amine, (2) 0 to about 100% by weight, relative to the organic pigment, of a surfactant, and (3) about 5 to about 15 parts by weight per part by weight of the organic pigment of a liquid in which the organic pigment is substantially insoluble, thereby forming a suspension of the surface-treated pigment composition in the liquid; (b) exposing the suspension to ultrasound; and (c) collecting the pigment composition.
Claim 14
Dependent Claim
111 words
A pigmented macromolecular material containing as pigment a pigment composition prepared according to a process comprising (a) treating an organic pigment with (1) about 0.1 to about 100% by weight, relative to the organic pigment, of a sterically hindered and/or bulky primary amine, (2) 0 to about 100% by weight, relative to the organic pigment, of a surfactant, and (3) about 5 to about 15 parts by weight per part by weight of the organic pigment of a liquid in which the organic pigment is substantially insoluble, thereby forming a suspension of the surface-treated pigment composition in the liquid; (b) exposing the suspension to ultrasound; and (c) collecting the pigment composition.
Claim 15
Dependent Claim
111 words
A pigmented coating composition containing as pigment a pigment composition prepared according to a process comprising (a) treating an organic pigment with (1) about 0.1 to about 100% by weight, relative to the organic pigment, of a sterically hindered and/or bulky primary amine, (2) 0 to about 100% by weight, relative to the organic pigment, of a surfactant, and (3) about 5 to about 15 parts by weight per part by weight of the organic pigment of a liquid in which the organic pigment is substantially insoluble, thereby forming a suspension of the surface-treated pigment composition in the liquid; (b) exposing the suspension to ultrasound; and (c) collecting the pigment composition.
Claim 16
Dependent Claim
111 words
A pigmented coating composition containing as pigment a pigment composition prepared according to a process comprising (a) treating an organic pigment with (1) about 0.1 to about 100% by weight, relative to the organic pigment, of a sterically hindered and/or bulky primary amine, (2) 0 to about 100% by weight, relative to the organic pigment, of a surfactant, and (3) about 5 to about 15 parts by weight per part by weight of the organic pigment of a liquid in which the organic pigment is substantially insoluble, thereby forming a suspension of the surface-treated pigment composition in the liquid; (b) exposing the suspension to ultrasound; and (c) collecting the pigment composition.
Claim 17
Dependent Claim
111 words
A pigmented printing ink containing as pigment a pigment composition prepared according to a process comprising (a) treating an organic pigment with (1) about 0.1 to about 100% by weight, relative to the organic pigment, of a sterically hindered and/or bulky primary amine, (2) 0 to about 100% by weight, relative to the organic pigment, of a surfactant, and (3) about 5 to about 15 parts by weight per part by weight of the organic pigment of a liquid in which the organic pigment is substantially insoluble, thereby forming a suspension of the surface-treated pigment composition in the liquid; (b) exposing the suspension to ultrasound; and (c) collecting the pigment composition.
Claim 18
Dependent Claim
111 words
A pigmented printing ink containing as pigment a pigment composition prepared according to a process comprising (a) treating an organic pigment with (1) about 0.1 to about 100% by weight, relative to the organic pigment, of a sterically hindered and/or bulky primary amine, (2) 0 to about 100% by weight, relative to the organic pigment, of a surfactant, and (3) about 5 to about 15 parts by weight per part by weight of the organic pigment of a liquid in which the organic pigment is substantially insoluble, thereby forming a suspension of the surface-treated pigment composition in the liquid; (b) exposing the suspension to ultrasound; and (c) collecting the pigment composition.
References Cited (Backward Citations)
US3342828A
Cited
US4238386A
Cited
US4250079A
Cited
US4588576A
Cited
JPS63305172A
Cited
US4929279A
Cited
EP0544441A1
Cited
US5362780A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-04-20 | 2001-10-20 | 2002-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-04-20 | 2005-10-20 | 2006-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-04-20 | 2009-10-20 | 2010-04-21 | $7700.00 | Window Closed / Lapsed |