Encapsulated active material with reduced formaldehyde potential

An active material and formaldehyde technology, applied in the formulation of perfume preparations, detergent compounding agents, liquid soap, etc., can solve the problems of undisclosed free formaldehyde reducers, etc.

Inactive Publication Date: 2007-08-01
INTERNATIONAL FLAVORS & FRAGRANCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] To date, the prior art has not disclosed a free formaldehyde reducer whose adduct or reaction product is hydrolytically stable in the final consumer product

Method used

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  • Encapsulated active material with reduced formaldehyde potential
  • Encapsulated active material with reduced formaldehyde potential
  • Encapsulated active material with reduced formaldehyde potential

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0125] According to one embodiment of the invention, the scavenger moieties may be attached to the surface of a solid support. A solid carrier is defined as a substance that is insoluble in the capsule slurry, the product base containing the capsule slurry and the product base used. The solid carrier scavenger can be added to the capsule slurry or commercial products containing capsules to reduce formaldehyde levels. The formaldehyde becomes permanently bound to the solid support, resulting in an inert and benign adduct.

[0126] Suitable solid supports can be polymeric or inorganic in nature. Examples of polymeric supports are polyolefins such as polyethylene, polystyrene, polyvinyl acetate, polysaccharides such as dextran, polyesters, polyamides, polyurethanes, polyacrylates, and polyureas. These polymers may be linear, branched or crosslinked. The surface of the carrier can be further treated to enable attachment of the scavenger fragments. An example of such a treatmen...

Embodiment

[0253] The following fragrance compositions were prepared for use in the following examples:

[0254] Fragrance ingredients

Embodiment I

[0256] Formaldehyde Levels in Uncleared Capsules

[0257] Into one reactor was charged 34 g of acrylic acid-acrylamide copolymer solution, 18 g of melamine-formaldehyde precondensate, and 293 g of water. This mixture was stirred until a clear solution with an approximate pH of 6.3 was obtained. Acetic acid was added until pH5 was reached. This mixture was then stirred at 23°C for 1 hour at which time a 210g fragrance core consisting of 105g fragrance and 105g Neobee M-5 oil was added and the mixture was subjected to high shear until an average droplet size of 8µm was achieved. The temperature was raised to 80°C over 2 hours to solidify the microcapsules. After 2 hours 40 g of water were added and the mixture was allowed to cool. On cooling a white slurry of pH 5-6 was obtained. ASTM formaldehyde analysis indicated formaldehyde levels in the slurry were 1500-3000 ppm.

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Abstract

The invention in its various embodiments provides a microcapsule product with reduced levels of formaldehyde. Formaldehyde levels are reduced by the inclusion of a formaldehyde scavenger. The microcapsules provided are well suited for rinse-off applications associated with personal care and cleaning products.

Description

[0001] Related Application Status [0002] This application is a continuation-in-part of our earlier application, US Serial No. 11 / 304,089, filed December 15, 2005, the contents of which are incorporated herein by reference in their entirety. technical field [0003] The present invention relates to active materials encapsulated with a polymeric material that exhibit reduced formaldehyde levels. The encapsulated fragrance material is ideal for rinse-off applications associated with personal care and cleaning products. Background technique [0004] Aroma chemicals are used in many products to enhance consumer liking for a product. Fragrance chemicals are added to consumer products such as laundry detergents, fabric softeners, soaps, detergents, personal care products such as shampoos, body washes, deodorants, and many others. [0005] In order to increase the effectiveness of the fragrance material to the user, various techniques have been employed to enhance the delivery ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02A61K8/11A61Q13/00A61Q15/00C11D17/08
CPCB01J13/20C11D17/0039C11D3/505B01J13/14
Inventor K·李L·M·波普尔维尔T·J·安纳斯塔西欧Y·雷
Owner INTERNATIONAL FLAVORS & FRAGRANCES
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