US4203776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous fortified rosin dispersions
Assignee: Hercules LLC
•
Filing: 1978-09-19
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Granted: 1980-05-20
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Expires: 1998-09-19
Abstract
Abstract Disclosed is a process for preparing paper size from fortified rosin wherein salts of sulfosuccinates of ethylene oxide condensates are employed as dispersing agents.
Inventors
- 👤 Richard W. Greiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:43
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/62; C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
125 words
In the invention process of preparing paper size from fortified rosin wherein molten fortified rosin and water containing a dispersing agent are first mixed to provide an emulsion wherein the molten fortified rosin is the continuous phase and the water is the disperse phase and the emulsion is subsequently inverted by the addition of water to provide an emulsion wherein the water is the continuous phase and the fortified rosin is the disperse phase, the improvement wherein there is employed as the dispersing agent one or more water-soluble compounds which provide in solution one or more anions of the formula ##STR7## wherein R is a normal or branched chain alkyl containing from 4 through 18 carbon atoms, and n is an integer 4 through 25.
Claim 2
Dependent Claim
125 words
In the invention process of preparing paper size from fortified rosin wherein molten fortified rosin and water containing a dispersing agent are first mixed to provide an emulsion wherein the molten fortified rosin is the continuous phase and the water is the disperse phase and the emulsion is subsequently inverted by the addition of water to provide an emulsion wherein the water is the continuous phase and the fortified rosin is the disperse phase, the improvement wherein there is employed as the dispersing agent one or more water-soluble compounds which provide in solution one or more anions of the formula ##STR7## wherein R is a normal or branched chain alkyl containing from 4 through 18 carbon atoms, and n is an integer 4 through 25.
Claim 3
Dependent Claim
31 words
The process of claim 1 wherein the anion is derived from a water-soluble compound containing the anion and any suitable cation that will permit substantial dissolution of the compound in water.
Claim 4
Dependent Claim
19 words
The process of claim 1 wherein, in the anion, R is nonyl and n is an average value 9.5.
Claim 5
Dependent Claim
19 words
The process of claim 2 wherein the cation is selected from the group consisting of sodium, potassium and ammonium.
Claim 6
Dependent Claim
19 words
The process of claim 3 wherein the cation is selected from the group consisting of sodium, potassium and ammonium.
Claim 7
Dependent Claim
10 words
An invert size prepared by the process of claim 1.
Claim 8
Dependent Claim
10 words
An invert size prepared by the process of claim 2.
Claim 9
Dependent Claim
10 words
An invert size prepared by the process of claim 3.
Claim 10
Dependent Claim
10 words
An invert size prepared by the process of claim 4.
Claim 11
Dependent Claim
10 words
An invert size prepared by the process of claim 5.
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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) | 1983-05-20 | 1983-11-19 | 1984-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-20 | 1987-11-19 | 1988-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-20 | 1991-11-19 | 1992-05-20 | $7700.00 | Window Closed / Lapsed |