EP0327379A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Humectants
Assignee: Croda International PLC
•
Filing: 1989-02-03
•
Granted: —
•
Expires: 2009-02-03
Abstract
Abstract Compounds of the formulae: <CHEM> are useful as humectants e.g. in cosmetic compositions. In the formulae, n is 1 or 2, q and p are positive integers and the product of q and p is equal to n; R<1> is a saturated or unsaturated hydrocarbyl radical and when n is 1, R<1> can be hydrogen, and when n is 2, R<1> can be a single bond; R<2> is a substituted or unsubstituted alkylene group; R<3>, R<4> and R<5> are substituted and unsubstituted alkyl groups; and R<6> is ethylene, substituted ethylene, or an ortho-aromatic structure. The compounds are prepared by reacting a carboxylic acid or derivative thereof with an N, N-disubstituted alkyldiamine in order to form a corresponding amide, and then quaternizing the amide with an alkylating agent.
Inventors
- 👤 Keith Coupland
- 👤 Peter John Smith
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-05 23:48
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/42; A61Q; A61Q17/00; A61Q19/00; A61Q19/10; A61Q5/00; C; C07; C07C; C07C233/00; C07C233/01; C07C233/34; C07C233/35; C07C233/36; C07C235/00; C07C235/02; C07C235/04; C07C235/10; C07C235/32; C07C235/38; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/34; C07D207/36; C07D207/40; C07D207/404; A61Q5/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
103 words
A compound of the formula: and mixtures of any two or more thereof, wherein n is 1 or 2 and q and p are positive integers, with the product of q and p being equal to n; R¹ is a saturated or unsaturated, substituted or unsubstituted hydrocarbyl radical, and when n is 1, R¹ may be hydrogen, and when n is 2, R¹ may be a single bond; R² is a substituted or unsubstituted alkylene group, R³, R⁴ and R⁵ are independently selected from substituted and unsubstituted alkyl groups; and R⁶ is an ethylene group, a substituted ethylene group, or an ortho-aromatic structure.
Claim 2
Dependent Claim
103 words
A compound of the formula: and mixtures of any two or more thereof, wherein n is 1 or 2 and q and p are positive integers, with the product of q and p being equal to n; R¹ is a saturated or unsaturated, substituted or unsubstituted hydrocarbyl radical, and when n is 1, R¹ may be hydrogen, and when n is 2, R¹ may be a single bond; R² is a substituted or unsubstituted alkylene group, R³, R⁴ and R⁵ are independently selected from substituted and unsubstituted alkyl groups; and R⁶ is an ethylene group, a substituted ethylene group, or an ortho-aromatic structure.
Claim 3
Dependent Claim
15 words
A compound according to claim 1, wherein R² is a substituted or unsubstituted propylene group.
Claim 4
Dependent Claim
22 words
A compound according to claim 1 or 2, wherein R³, R⁴ and R⁵ are independently selected from substituted and unsubstituted methyl groups.
Claim 5
Dependent Claim
16 words
A compound according to claim 1, 2 or 3, wherein R¹ is a hydroxy-substituted hydrocarbyl group.
Claim 6
Dependent Claim
39 words
A method of making a humectant compound as claimed in claim 1, which comprises reacting a carboxylic acid or derivative thereof with an N, N-disubstituted alkyldiamine to form the corresponding amide, and quaternizing said amide with an alkylating agent.
Claim 7
Dependent Claim
39 words
A method according to claim 5, wherein said N, N-disubstituted alkyldiamine is a compound of the formula: wherein R⁷ is a substituted or unsubstituted alkylene group, and R⁸ and R⁹ are independently selected from substituted and unsubstituted alkyl groups.
Claim 8
Dependent Claim
80 words
A method according to claim 5 or 6, wherein a monocarboxylic acid is used selected from formic acid, acetic acid, propionic acid, lactic acid, butyric acid, pentanoic acid, undecanoic acid, dedecanoic acid, tridecanoic acid, tetradecanoic acid, pentadecanoic acid, hexadecanoic acid, heptadecanoic acid, octadecanoic acid, nonadecanoic acid, eicosanoic acid, docosanoic acid, tetracosanoic acid, and mixtures thereof; or a di-carboxylic acid is used selected from oxalic acid, malonic acid, glutaric acid, adipic acid, pimelic acid, sebacic acid, succinic acid, and mixtures thereof.
Claim 9
Dependent Claim
33 words
A method according to claim 5 or 6, wherein the carboxylic acid is an unsaturated mono- or dicarboxylic acid selected from acrylic acid, octadecenoic acid, docosenoic acid, and mixtures thereof; and fumaric acid.
Claim 10
Dependent Claim
47 words
A cosmetic composition, particularly for the care, protection or cleansing of the skin, which comprises up to 30% by weight of one or more compounds of claim 1, the balance being carrier and other ingredients such as emulsifiers, fats, vegetable extracts, preservatives, perfumes, thickeners, solvents and surfactants.
Claim 11
Dependent Claim
17 words
The use as a humectant of a compound as claimed in any of claims 1 to 4.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.