Patent US4415705A successfully refreshed from Google Patents.
US4415705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rosin derivatives used as dispersants
Assignee: BASF Corp
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Filing: 1982-07-19
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Granted: 1983-11-15
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Expires: 2002-07-19
Abstract
Abstract High-solids pigment concentrates are disclosed containing a novel dispersing agent formed by reacting a poly (lower alkylene) imine, having molecular weight of 1,000 to 15,000 with a polyester comprising the esterification product of hydroxystearic acid, or its oligomer, with tall oil rosin.
Inventors
- 👤 G. Frederick Hutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:16
CPC Classifications
C; C09; C09K; C09K23/00; C09K23/16; C09D; C09D17/00; C09F; C09F1/00; C09F1/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
43 words
A dispersing agent formed by reacting a poly (lower alkylene) imine, having mol. wt. of 1,000 to 15,000 with a polyester containing free carboxylic acid groups, said polyester comprising the esterification product of hydroxy stearic acid, or its oligomer, with tall oil rosin.
Claim 2
Dependent Claim
43 words
A dispersing agent formed by reacting a poly (lower alkylene) imine, having mol. wt. of 1,000 to 15,000 with a polyester containing free carboxylic acid groups, said polyester comprising the esterification product of hydroxy stearic acid, or its oligomer, with tall oil rosin.
Claim 3
Dependent Claim
23 words
A dispersing agent according to claim 1 wherein the esterification is carried out by heating at 150° to 155° C. for 6 hours.
Claim 4
Dependent Claim
34 words
A dispersing agent according to claim 1 wherein the polyester is the reaction product of 1 mole of tall oil rosin with 2 moles of commercial 12-hydroxystearic acid containing approximately 12% of stearic acid.
Claim 5
Dependent Claim
22 words
A dispersing agent according to claim 3 wherein the poly (lower alkylene) imine is polyethylene imine having a molecular weight of 1200.
Claim 6
Dependent Claim
96 words
A pigment dispersion suitable for use in preparing inks, said dispersion comprising 40 to 60% by weight pigment, 6 to 18% by weight of alkyd resin, 0 to 6% by weight of non-alkyd resin, 2 to 10% by weight of rosin modified polyester-polyimine dispersing agent wherein said dispersing agent is formed by reacting a poly (lower alkylene) imine, having mol. wt. of 1,000 to 15,000 with a polyester containing free carboxylic acid groups, said polyester comprising the esterification product of hydroxy stearic acid, or its oligomer, with tall oil rosin and enough solvent to total 100%.
Claim 7
Dependent Claim
96 words
A pigment dispersion suitable for use in preparing inks, said dispersion comprising 40 to 60% by weight pigment, 6 to 18% by weight of alkyd resin, 0 to 6% by weight of non-alkyd resin, 2 to 10% by weight of rosin modified polyester-polyimine dispersing agent wherein said dispersing agent is formed by reacting a poly (lower alkylene) imine, having mol. wt. of 1,000 to 15,000 with a polyester containing free carboxylic acid groups, said polyester comprising the esterification product of hydroxy stearic acid, or its oligomer, with tall oil rosin and enough solvent to total 100%.
Claim 8
Dependent Claim
12 words
A dispersion as in claim 5 wherein the pigment is carbon black.
Claim 9
Dependent Claim
36 words
A printing ink comprising pigment dispersed in an ink vehicle comprised of a liquid petroleum hydrocarbon solution of an ink resin and 1 to 10%, by weight, based pigment, of the dispersing agent of claim 1.
Claim 10
Dependent Claim
13 words
A printing ink as in claim 7 wherein the pigment is carbon black.
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) | 1986-11-14 | 1987-05-16 | 1987-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-14 | 1991-05-16 | 1991-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-14 | 1995-05-16 | 1995-11-15 | $7700.00 | Window Closed / Lapsed |