US4112067A
Expired / Lapsed
US
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Method for treating poison ivy dermatitis using certain polyamines and polytertiaryamides
Assignee: Dow Chemical Co
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Filing: 1977-02-17
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Granted: 1978-09-05
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Expires: 1997-02-17
Abstract
Abstract Dermatitis caused by exposure of the skin to a plant of the genus Rhus is treated and controlled by the topical application of an effective amount of a polyamine or polytertiaryamide.
Inventors
- 👤 Donald A. Tomalia
- 👤 Yancey J. Dickert
- 👤 Leslie P. McCarty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:08
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/74; A61K31/785
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
128 words
A method of treating and controlling dermatitis in humans caused by the exposure of the skin to a plant of the genus Rhus which comprises the topical application of an effective dermatitis alleviating amount of a polymer having a molecular weight of at least 5000 wherein said polymer is a polyamine of recurring units represented by the formula ##STR4## wherein R represents hydrogen, a lower alkyl of from 1 to about 3 carbon atoms, or a substituted hydroxyl lower alkyl having from 1 to about 3 carbon atoms; a polytertiaryamide of recurring units represented by the formula ##STR5## wherein R' represents hydrogen or a lower alkyl of from 1 to about 3 carbon atoms; or a partially hydrolyzed polytertiaryamide prepared from a polytertiaryamide of the formula given above.
Claim 2
Independent Claim
128 words
A method of treating and controlling dermatitis in humans caused by the exposure of the skin to a plant of the genus Rhus which comprises the topical application of an effective dermatitis alleviating amount of a polymer having a molecular weight of at least 5000 wherein said polymer is a polyamine of recurring units represented by the formula ##STR4## wherein R represents hydrogen, a lower alkyl of from 1 to about 3 carbon atoms, or a substituted hydroxyl lower alkyl having from 1 to about 3 carbon atoms; a polytertiaryamide of recurring units represented by the formula ##STR5## wherein R' represents hydrogen or a lower alkyl of from 1 to about 3 carbon atoms; or a partially hydrolyzed polytertiaryamide prepared from a polytertiaryamide of the formula given above.
Claim 3
Dependent Claim
16 words
The method of claim 1 wherein the polymer is a polytertiaryamide or its partially hydrolyzed product.
Claim 4
Dependent Claim
11 words
The method of claim 1 wherein the polymer is a polyamine.
Claim 5
Dependent Claim
12 words
The method of claim 3 wherein the polymer is a poly(ethyleneimine-ethylene oxide).
Claim 6
Dependent Claim
9 words
The method of claim 2 wherein R' is ethyl.
Claim 7
Dependent Claim
15 words
The method of claim 1 wherein the polymer is applied in combination with a carrier.
Claim 8
Dependent Claim
10 words
The method of claim 6 wherein the carrier is water.
Claim 9
Dependent Claim
20 words
The method of claim 1 wherein the polymer is applied prior to exposure to the plant of the genus Rhus.
References Cited (Backward Citations)
US3976781A
Cited
US3483141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-04 | 1982-03-06 | 1982-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-04 | 1986-03-06 | 1986-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-04 | 1990-03-06 | 1990-09-05 | $7700.00 | Window Closed / Lapsed |