US4493734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conditioning of crude pigment in a salt free corn syrup based medium
Assignee: Bayer Corp
•
Filing: 1983-05-23
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Granted: 1985-01-15
•
Expires: 2003-05-23
Abstract
Abstract Process for the conditioning of a pigment by applying shear to a crude pigment in the presence of a liquid conditioning agent selected from the group consisting of corn syrup, corn syrup solids and molasses and optionally in the presence of a viscosity modifying agent, in a medium which is essentially free from an added inorganic salt.
Inventors
- 👤 Thomas R. Flatt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:27
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0022
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
52 words
In a process for conditioning a crude pigment by subjecting it to shear the improvement which comprises conditioning it in the presence of an agent selected from the group consisting of corn syrup, corn syrup solids and molasses in a high shear mixing device in the absence of any solid grinding aid.
Claim 2
Dependent Claim
52 words
In a process for conditioning a crude pigment by subjecting it to shear the improvement which comprises conditioning it in the presence of an agent selected from the group consisting of corn syrup, corn syrup solids and molasses in a high shear mixing device in the absence of any solid grinding aid.
Claim 3
Dependent Claim
25 words
The process of claim 1 wherein the viscosity of the medium is adjusted with a protic polar solvent during the course of applying the shear.
Claim 4
Dependent Claim
13 words
The process according to claim 1 wherein the conditioning agent is corn syrup.
Claim 5
Dependent Claim
32 words
The process according to claim 1 wherein the conditioning agent is employed in an amount of 0.2 to 5 parts by weight, based on 1 part by weight of the crude pigment.
Claim 6
Dependent Claim
30 words
The process according to claim 1 wherein the conditioning agent is employed in an amount of 0.5 to 2 parts by weight, based on 1 part of the crude pigment.
Claim 7
Dependent Claim
26 words
The process according to claim 2 wherein the protic polar solvent is selected from the group consisting of water, glycols, polyglycols and glymes and mixtures thereof.
Claim 8
Dependent Claim
16 words
The process according to claim 1 wherein the viscosity modifying agent employed is polyethylene glycol 400.
Claim 9
Dependent Claim
33 words
The process according to claim 2 wherein the viscosity modifying agent is employed in an amount of up to 50 parts by weight, based on 1 part by weight of the crude pigment.
Claim 10
Dependent Claim
15 words
The process according to claim 1 wherein the pigment employed is C.I. Pigment Red 179.
Claim 11
Dependent Claim
15 words
The process according to claim 1 wherein the pigment employed is C.I. Pigment Blue 15.
Claim 12
Dependent Claim
18 words
The process according to claim 1 wherein the pigment employed is copper phthalocyanine blue containing 3-4% of chlorine.
Claim 13
Dependent Claim
15 words
The process of claim 1 wherein the shear is applied in a double arm mixer.
Claim 14
Dependent Claim
14 words
The process of claim 1 wherein the shear is applied in a continuous mixer.
Claim 15
Dependent Claim
125 words
A process for conditioning a crude organic pigment which comprises: (a) subjecting it to shear in a medium free from any solid grinding aid; (b) in the presence of between about 0.5 and 2 parts by weight of a conditioning agent selected from the group consisting of corn syrup, corn syrup solids, molasses and mixtures thereof based on 1 part by weight of dry crude pigment; (c) using up to 50 parts by weight based on 1 part by weight of crude pigment of a protic polar solvent selected from the group consisting of glycols, polyglycols, glymes and mixtures thereof to adjust the viscosity of the mass under shear, and (d) applying the shear in a continuous mixer or batch mixer other than a masticator.
Claim 16
Dependent Claim
125 words
A process for conditioning a crude organic pigment which comprises: (a) subjecting it to shear in a medium free from any solid grinding aid; (b) in the presence of between about 0.5 and 2 parts by weight of a conditioning agent selected from the group consisting of corn syrup, corn syrup solids, molasses and mixtures thereof based on 1 part by weight of dry crude pigment; (c) using up to 50 parts by weight based on 1 part by weight of crude pigment of a protic polar solvent selected from the group consisting of glycols, polyglycols, glymes and mixtures thereof to adjust the viscosity of the mass under shear, and (d) applying the shear in a continuous mixer or batch mixer other than a masticator.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-15 | 1988-07-16 | 1989-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-15 | 1992-07-16 | 1993-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-15 | 1996-07-16 | 1997-01-15 | $7700.00 | Window Closed / Lapsed |