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US 12,544,325 B2Granted
Compositions and related methods
AssigneeColgate-Palmolive Company
InventorsAndre Brunella, Turan Matur
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to amine hydrofluorides and mixtures of these amine hydrofluorides, and to a process for the preparation of these amine hydrofluorides and their use in oral hygiene compositions.
Claims18
A method of manufacturing an oral care or personal care composition, the method comprising the steps of:
- a. mixing a tertiary amine in water to form an aqueous solution, the tertiary amine comprising one or more of N′-octadecyltrimethylendiamine-N,N,N′-tris(2-ethanol), N′-octadecyltrimethylendiamine-N,N,N′-tris(2-ethanol)-dihydrofluoride, N-octadeca-9-enylamine hydrofluoride, or N-octadeca-9-enylamine;
- and
- b. increasing the solubility of the tertiary amine in the aqueous solution via the addition of about 1 to about 2.5 wt. % of an alkali salt selected from sodium chloride, potassium chloride, trisodium citrate dihydrate, and a combination of two or more thereof, wherein the aqueous solution after the step of increasing the solubility of the tertiary amine consists of the tertiary amine, the alkali salt, the water, and optionally an acid.
A method of manufacturing a composition, the method comprising:
- a. forming an aqueous solution by mixing a tertiary amine in water, the tertiary amine comprising one or more of N′-octadecyltrimethylendiamine-N,N,N′-tris(2-ethanol), N′-octadecyltrimethylendiamine-N,N,N′-tris(2-ethanol)-dihydrofluoride, N-octadeca-9-enylamine hydrofluoride, or N-octadeca-9-enylamine;
- and
- b. increasing the solubility of the tertiary amine in the aqueous solution to at least 35% by weight via the addition of about 1 to about 2 wt. % of an alkali salt selected from sodium chloride, potassium chloride, trisodium citrate dihydrate, and a combination of two or more thereof, wherein the aqueous solution consists of the tertiary amine, the alkali salt, water, and optionally an acid.
A method of manufacturing a stock composition for use in a personal care or oral care composition, the method consisting of:
- a. mixing a tertiary amine in water, the tertiary amine comprising one or more of N′-octadecyltrimethylendiamine-N,N,N′-tris(2-ethanol), N′-octadecyltrimethylendiamine-N,N,N′-tris(2-ethanol)-dihydrofluoride, N-octadeca-9-enylamine hydrofluoride, or N-octadeca-9-enylamine;
- and
- b. increasing the solubility of the tertiary amine to at least 35% by weight via the addition of about 1 to about 2 wt. % of an alkali salt selected from sodium chloride, potassium chloride, trisodium citrate dihydrate, and a combination of two or more thereof to form a stock composition, wherein the stock composition consists of the tertiary amine, the alkali salt, water, and optionally an acid.
Dependencies are inferred from the claim text.