US4404034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing aqueous dispersion of rosin-base materials
Assignee: Arakawa Chemical Industries Ltd
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Filing: 1981-09-15
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Granted: 1983-09-13
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Expires: 2001-09-15
Abstract
Abstract This invention provides a process for preparing an aqueous dispersion of a rosin-base material by an inversion method, the process being characterized in that the dispersant is at least one of compounds represented by the formula ##STR1## wherein R is straight-chain or branched-chain alkyl or alkenyl group having 10 to 24 carbon atoms, n is an integer of 4 to 25, one of X and Y is --SO 3 M and the other thereof is hydrogen atom, and M is a monovalent cation. The aqueous dispersion obtained by the process of the invention have excellent sizing effects, very high stabilities and greatly reduced foaming propertie
Inventors
- 👤 Kimio Kawatani
- 👤 Ryoji Kaji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:41
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/62; C; C08; C08K; C08K5/00; C08K5/36; C08K5/41; C08K5/42
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
133 words
In a process for preparing an aqueous dispersion of a rosin-base material by mixing a melt of the rosin-base material, a dispersant and water to obtain a dispersion comprising a continuous phase of the rosin-base material and a dispersed phase of the water, and adding water to the dispersion to invert the dispersion to the contemplated aqueous dispersion comprising a dispersed phase of the rosin-base material and a continuous phase of the water; the improvement wherein said dispersant comprises at least one compound represented by the formula ##STR3## wherein R is straight-chain or branched-chain alkyl or alkenyl group having 10 to 24 carbon atoms, n is an integer of 7-18, one of X and Y is --SO 3 M and the other thereof is a hydrogen atom, and M is a monovalent cation.
Claim 2
Dependent Claim
133 words
In a process for preparing an aqueous dispersion of a rosin-base material by mixing a melt of the rosin-base material, a dispersant and water to obtain a dispersion comprising a continuous phase of the rosin-base material and a dispersed phase of the water, and adding water to the dispersion to invert the dispersion to the contemplated aqueous dispersion comprising a dispersed phase of the rosin-base material and a continuous phase of the water; the improvement wherein said dispersant comprises at least one compound represented by the formula ##STR3## wherein R is straight-chain or branched-chain alkyl or alkenyl group having 10 to 24 carbon atoms, n is an integer of 7-18, one of X and Y is --SO 3 M and the other thereof is a hydrogen atom, and M is a monovalent cation.
Claim 3
Dependent Claim
25 words
A process as defined in claim 1 wherein the group R is straight-chain or branched-chain alkyl or alkenyl group having 10 to 18 carbon atoms.
Claim 4
Dependent Claim
27 words
A process as defined in claim 1 wherein the dispersant is used in an amount of about 0.5 to about 10% by weight of the rosin-base material.
Claim 5
Dependent Claim
27 words
A process as defined in claim 3 wherein the dispersant is used in an amount of about 1 to about 8% by weight of the rosin-base material.
Claim 6
Dependent Claim
20 words
An aqueous dispersion of rosin-base material prepared by the process as defined in any one of claims 1 to 4.
References Cited (Backward Citations)
US4148665A
Cited
US4203776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-12 | 1987-03-14 | 1987-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-12 | 1991-03-14 | 1991-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-12 | 1995-03-14 | 1995-09-13 | $7700.00 | Window Closed / Lapsed |