US4221733A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Betaines exhibiting improved skin-protecting characteristics
Assignee: Rewo Chemische Werke GmbH
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Filing: 1978-11-13
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Granted: 1980-09-09
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Expires: 1998-11-13
Abstract
Abstract Betaines exhibiting improved skin-protecting characteristics and particularly reduced eye irritation are provided herein. Additionally, improved cleansing, bathing and disinfecting compositions obtained using these betaines are encompassed by the present invention.
Inventors
- 👤 Wilhelm Melloh
- 👤 Wolfgang Reinisch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:20
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/44; A61Q; A61Q17/00; A61Q17/005; A61Q19/00; A61Q19/10; C; C11; C11D; C11D1/00; C11D1/88; C11D1/90; A61Q5/00; A61Q5/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
50 words
Betaines of the formula ##STR5## wherein R 1 is the acyl radical of ricinoleic acid, R 2 and R 5 are C 1-4 alkylene radicals and R 3 and R 4 are selected from the group C 1-4 alkyl, C 1-3 hydroxyalkyl and hydroxypolyethoxy having from 2-20 repeating ethoxy units.
Claim 2
Dependent Claim
50 words
Betaines of the formula ##STR5## wherein R 1 is the acyl radical of ricinoleic acid, R 2 and R 5 are C 1-4 alkylene radicals and R 3 and R 4 are selected from the group C 1-4 alkyl, C 1-3 hydroxyalkyl and hydroxypolyethoxy having from 2-20 repeating ethoxy units.
Claim 3
Dependent Claim
30 words
The betaine of claim 1 wherein R 2 is a C 3 alkylene radical, R 5 is methylene and R 3 and R 4 are methyl, ethyl, hydroxyethyl or hydroxypropyl.
Claim 4
Dependent Claim
15 words
The betaine of claim 2 wherein R 3 is methyl and R 4 is methyl.
Claim 5
Dependent Claim
27 words
The betaine of claim 1 wherein the acyl group R 1 is derived from castor oil fatty acids containing greater than 80% by weight of ricinoleic acid.
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) | 1983-09-09 | 1984-03-10 | 1984-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-09 | 1988-03-10 | 1988-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-09 | 1992-03-10 | 1992-09-09 | $7700.00 | Window Closed / Lapsed |