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AssigneeQuest International Services B.V.
InventorsAnthony Alexander Birkbeck, Olivier Moulin, Christine Nagel, Keith Douglas Perring, Charles Stanley Sell, Kathleen Mary Tuck
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A substantially odourless aromatic amine trapping agent is used in a composition including perfume for the purpose of enabling the perfume and trapping agent to react chemically together spontaneously and reversibly to form a reaction product form which the perfume can be released. In the reaction product, the perfume may be protected against degradation, premature evaporation etc., with the perfume being releasable from the reaction product. In contrast to a pro-perfume, the reaction product formed the present invention is not used by being included as such in a mixture of perfumes or perfumed product, but instead the perfume and trapping agent are included in a mixture of perfumes or perfumed product where they react spontaneously in situ to form a transient reaction product for subsequent release of the perfume. The invention also provides a perfume composition including the trapping agent.
Use of a substantially odourless aromatic amine trapping agent in a composition including perfume, for the purpose of enabling the perfume and trapping agent to react chemically spontaneously and reversibly to form a reaction product from which the perfume can be released.
Use according to any one of the preceding claims, wherein the trapping agent comprises a primary amine.
Use according to any one of the preceding claims, wherein the trapping agent has a calculated log P in the range 4 to 10, preferably 5 to 9.
Use according to any one of the preceding claims, wherein the perfume includes a carbonyl group.
Use according to any one of the preceding claims, wherein the perfume is released from the reaction product by a hydrolysis reaction.
Use according to any one of the preceding claims, wherein the reaction product is substantially odourless.
Use according to any one of the preceding claims, wherein the composition further comprises one or more additional perfumes.
Use according to any one of the preceding claims, wherein the composition further comprises solvent and/or solid substrate.
Use according to any one of the preceding claims, wherein the composition comprises a perfumed product.
A method of making a perfume composition, comprising mixing together a perfume and a substantially odourless aromatic amine trapping agent that chemically react together spontaneously and reversibly to form a reaction product from which the perfume can be released.
A method of modifying a perfume composition or perfumed product, comprising adding to the perfume composition or perfumed product a substantially odourless aromatic amine trapping agent that chemically reacts spontaneously and reversibly with a perfume in the composition or product to form a reaction product from which the perfume can be released.
A method of preserving a perfume, prolonging perfume life or delaying perfume release in a perfume composition or perfumed product, comprising adding to the perfume composition or perfumed product a substantially odourless aromatic amine trapping agent that chemically reacts spontaneously and reversibly with the perfume to form a reaction product from which the perfume can be released.
A method of modifying a perfumed product, comprising adding to the product a perfume and a substantially odourless aromatic amine trapping agent that chemically react together spontaneously and reversibly to form a reaction product from which the perfume can be released.
A perfume composition, comprising a perfume and a substantially odourless aromatic amine trapping agent that chemically react together spontaneously and reversibly to form a reaction product from which the perfume can be released, wherein the trapping agent is non-polymeric and has a calculated log P in the range 4 to 10, but excluding the trapping agent having the formula:
A perfume fixative comprising a substantially odourless aromatic amine that is non-polymeric and has a calculated log P in the range 4 to 10, but excluding an amine having the formula:
A perfume fixative comprising one or more of the following:
Dependencies are inferred from the claim text.