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Stabilized Body Care Products, Household Products, Textiles And Fabrics

IP.com Disclosure Number: IPCOM000020242D
Publication Date: 2003-Nov-05

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed are stabilized body care products, household products, textiles and fabrics which comprise certain hindered nitroxyl, hydroxylamine and hydroxylamine salt compounds. Dyed products and articles are effectively stabilized against color degradation. The products are for example skin-care products, hair-care products, dentifrices, cosmetics, laundry detergents and fabric softeners, non-detergent based fabric care products, household cleaners and textile-care products.

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Stabilized Body Care Products, Household Products, Textiles And Fabrics

Since consumers today can choose from a large variety of Home & Personal Care products, producers need to communicate clearly how their brands are unique. Sophisticated products containing new fragrances and actives in many colorful formulations, displayed in transparent and translucent packaging are today very common.

It is mandatory for commercial success that the pleasant appearance and the fresh smell of a consumer product last during its whole product life cycle even when exposed heavily to UV- light. This exposure can result in decomposition processes and strong color fading destroying the product appearance and smell.

Various stabilization techniques of clear package products by absorption of UV light are commonly used and well known. For example broad-band UV light stabilizers of the benzotriazole class enhance product's stability and shelf live due to their very good UV-A and UV-B absorption properties, compared to other absorbers such as benzophenones where mainly UV- B light is absorbed.

However, by just the absorption of UV light, not all potential degradation pathways are blocked.

A new approach to avoid (UV-) light induced decomposition is the quenching of excited molecules. Surprisingly it was found that this effect can be achieved with specific compounds selected from nitroxyl compounds, hindered hydroxylamine compounds and hindered hydroxylamine salt compounds.

Background WO 01/07550 teaches the treatment of fabric with hindered amine stabilizers.


U.S. Pat. No. 6,254,724 teaches the stabilization of pulp and paper with hindered-amine based compounds.

Detailed Disclosure The present invention pertains to a stabilized composition comprising

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(a) a body care product, household product, textile or fabric and
(b) an effective stabilizing amount of at least one compound selected from the group consisting of

(i) hindered nitroxyl compounds of formula (I),

(ii) hindered hydroxylamine compounds of formula (II) and

(iii) hindered hydroxylamine salt compounds of formula (III)

Z2

+G1 G2

G1 G2

G1 G2

G1 G2

G1 G2

G1

O

Z1

-HO [X]

Z2

.

O

N

N

N

Z1

Z1

H

H

j

Z2

G2

h

(I)

(II)

(III)

where G1 and G2 are independently alkyl of 1 to 4 carbon atoms or are together pentamethylene, Z1 and Z2 are each methyl, or Z1 and Z2 together form a linking moiety which may additionally be substituted by an ester, ether, hydroxy, oxo, cyanohydrin, amide, amino, carboxy or urethane group,

X is an inorganic or organic anion, such as phosphate, phosphonate, carbonate, bicarbonate, nitrate, chloride, bromide, bisulfite, sulfite, bisulfate, sulfate, borate, formate, acetate, benzoate, citrate, oxalate, tartrate, acrylate, polyacrylate, fumarate, maleate, itaconate, glycolate, gluconate, malate, mandelate, tiglate, ascorbate, polymethacrylate, a carboxylate of nitrilotriacetic acid, hydroxyethylethylenediaminetriacetic acid, ethylenediaminetetraacetic acid or of di...