US4173488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-in-water emulsions containing hydropholeic starch
Assignee: Champion International Corp
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Filing: 1972-10-10
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Granted: 1979-11-06
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Expires: 1992-10-10
Abstract
Abstract A hydrophobic starch is utilized as an emulsifying agent in an oil-in-water emulsion wherein the oil is a volatile oil. The emulsion is used in the production of microcapsular coatings which impart opacity to substrates upon expulsion of the oil from the coating.
Inventors
- 👤 Anthony E. Vassiliades
- 👤 Shrenik Shroff
- 👤 Edward F. Nauman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:48
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/02; B01J13/20; B01J13/203; C; C09; C09D; C09D7/00; C09D7/40; C09D7/42; D; D21; D21H; D21H19/00; D21H19/36; D21H19/38; D21H19/42
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
88 words
An oil-in-water emulsion coating composition for imparting brightness and/or opacity to paper, boxboard, and the like, said emulsion having a finely dispersed volatile liquid oil phase and a continuous water phase containing a water binder and an emulsifier, wherein the improvement comprises utilizing a combination binder and emulsifier in said water phase consisting essentially of dispersed particles of a hydrophobic benzyl starch containing ether-linked benzyl groups, said dispersed particles being present in a binder-effective concentration at which said particles exhibit the characteristics of forming and stabilizing said emulsion.
Claim 2
Dependent Claim
88 words
An oil-in-water emulsion coating composition for imparting brightness and/or opacity to paper, boxboard, and the like, said emulsion having a finely dispersed volatile liquid oil phase and a continuous water phase containing a water binder and an emulsifier, wherein the improvement comprises utilizing a combination binder and emulsifier in said water phase consisting essentially of dispersed particles of a hydrophobic benzyl starch containing ether-linked benzyl groups, said dispersed particles being present in a binder-effective concentration at which said particles exhibit the characteristics of forming and stabilizing said emulsion.
Claim 3
Dependent Claim
23 words
The coating composition of claim 1 in which said oil phase is dispersed at an average droplet size of less then 2 microns.
Claim 4
Dependent Claim
57 words
The coating composition of claim 1 in which the weight ratio of the oil in said oil phase to the water in said water phase is within the range of from 0.556 to 1.0 part of oil per part of water, and said oil is dispersed at an average droplet size of less than about 2 microns.
Claim 5
Dependent Claim
43 words
A composition for use in the production of microcapsular opacifiers comprising an oil-in-water emulsion, said emulsion having a finely dispersed volatile liquid oil phase and a continuous water phase containing said emulsifier, said emulsifier consisting essentially of dispersed particles of a hydrophobic starch.
Claim 6
Dependent Claim
43 words
A composition for use in the production of microcapsular opacifiers comprising an oil-in-water emulsion, said emulsion having a finely dispersed volatile liquid oil phase and a continuous water phase containing said emulsifier, said emulsifier consisting essentially of dispersed particles of a hydrophobic starch.
Claim 7
Dependent Claim
30 words
The composition of claim 4 wherein said starch contains hydrophobic groups which are alkyl groups having 3 to 12 carbon atoms or aralkyl groups having 7 to 12 carbon atoms.
Claim 8
Dependent Claim
12 words
The composition of claim 4 wherein said hydrophobic groups are benzyl groups.
Claim 9
Dependent Claim
12 words
The composition of claim 4 wherein said hydrophobic groups are methallyl groups.
Claim 10
Dependent Claim
12 words
The composition of claim 4 wherein said hydrophobic groups are allyl groups.
Claim 11
Dependent Claim
20 words
The composition of claim 4 wherein said oil is dispersed at an average droplet diameter of below about 2 microns.
Claim 12
Dependent Claim
18 words
The composition of claim 9 wherein said oil droplets have an average particle diameter below about one micron.
Claim 13
Dependent Claim
12 words
The composition of claim 4 wherein said volatile oil is mineral spirits.
Claim 14
Dependent Claim
12 words
The composition of claim 6 wherein said volatile oil is mineral spirits.
Claim 15
Dependent Claim
20 words
The composition of claim 4 wherein said volatile oil is dispersed at an average droplet size of about 0.5 micron.
Claim 16
Dependent Claim
20 words
The composition of claim 6 wherein said volatile oil is dispersed at an average droplet size of about 0.5 micron.
Claim 17
Dependent Claim
57 words
The coating composition of claim 4 in which the weight ratio of the oil in said oil phase to the water in said water phase is within the range of from 0.556 to 1.0 part of oil per part of water, and said oil is dispersed at an average droplet size of less than about 2 microns.
Claim 18
Dependent Claim
57 words
The coating composition of claim 6 in which the weight ratio of the oil in said oil phase to the water in said water phase is within the range of from 0.556 to 1.0 part of oil per part of water, and said oil is dispersed at an average droplet size of less than about 2 microns.
Claim 19
Dependent Claim
83 words
An oil-in-water emulsion coating composition for imparting brightness and/or opacity to paper, boxboard, and the like, said emulsion having a finely dispersed volatile liquid oil phase and a continuous water phase containing a water binder and an emulsifier, wherein the improvement comprises utilizing a combination binder and emulsifier in said water phase consisting essentially of dispersed particles of a hydrophobic starch, said dispersed particles being present in a binder-effective concentration at which said particles exhibit the characteristics of forming and stabilizing said emulsion.
Claim 20
Dependent Claim
83 words
An oil-in-water emulsion coating composition for imparting brightness and/or opacity to paper, boxboard, and the like, said emulsion having a finely dispersed volatile liquid oil phase and a continuous water phase containing a water binder and an emulsifier, wherein the improvement comprises utilizing a combination binder and emulsifier in said water phase consisting essentially of dispersed particles of a hydrophobic starch, said dispersed particles being present in a binder-effective concentration at which said particles exhibit the characteristics of forming and stabilizing said emulsion.
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) | 1982-11-05 | 1983-05-07 | 1983-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-05 | 1987-05-07 | 1987-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-05 | 1991-05-07 | 1991-11-06 | $7700.00 | Window Closed / Lapsed |