Bleaching and dyeing; fluid treatment and chemical modification – Cleaning or laundering – Removing formation impurities from artifical fiber
Patent
1995-03-16
1997-07-22
Howard, Jacqueline V.
Bleaching and dyeing; fluid treatment and chemical modification
Cleaning or laundering
Removing formation impurities from artifical fiber
252 863, 510320, 510515, 510101, 510102, D06M 1300, C11D 350
Patent
active
056499795
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD AND PRIOR ART
The present invention relates to the field of perfumery and, more particularly, to improved perfumed detergents and fabric softeners.
The use of enzymes in fabric detergents, in order to improve their efficiency, has been known for a number of years. Amongst said enzymes, lipases are particularly preferred, as a result of their capacity to hydrolyse the fat materials on the dirty linen and thus to facilitate its cleaning. However, it is known that malodour problems can occasionally occur under certain application conditions. In order to solve these malodour problems, there has been proposed a method (see for example EP 430 315) consisting in carefully choosing the perfuming ingredients incorporated in the detergents and which, following the washing, are deposited on the fabrics. Therefore, appropriate perfuming of said detergents appears to be extremely important.
On the other hand, it would be desirable that said detergents and fabric softeners are able to impart to the fabrics a long-lasting odour, such that the user perceives this odour even a long time after the textiles have been washed and subsequently dried. To this end, it has been known to use in the fabric detergents and softeners perfuming ingredients which have a good tenacity on the fabrics, i.e. ingredients whose odour, once imparted to the textiles upon the washing, can then be perceived by the consumer for several days. However, there are many perfuming substances known for their extremely pleasant odours, and namely a quality of "freshness" often associated with the notion of cleanliness, which substances are unfortunately not very tenacious, or even not tenacious at all, on fabrics, such that their perfuming effect can only be perceived very briefly, at the most for a few hours following the washing and drying operations. Clearly, prolonging the fragrance effect of such substances, and thus the "freshness" of the fabrics, would be highly desirable.
The present invention brings precisely a novel solution to this problem. We have now unexpectedly discovered a better process for perfuming textiles washed with detergents containing lipases. We have in fact been able to establish that, by adding particular ingredients to the fabric detergent and/or to the fabric softener that is subsequently applied, one could distinctly improve the odour of the fabrics treated with these products and prolong in a remarkable way the fragrance of said fabrics after drying.
DESCRIPTION OF THE INVENTION
A first object of the present invention is thus to provide a process for perfuming fabrics washed in the presence of a lipase-containing detergent and, optionally, subsequently treated with a fabric softener, said process being characterized in that said detergent and/or said fabric softener contains a compound of formula ##STR5## wherein a. R represents a radical derived from a fragrant alcohol of formula ROH and Y represents a C.sub.7 to C.sub.24 linear or branched, saturated or unsaturated alkyl radical, or a --(CH.sub.2).sub.n COOR group wherein R is defined as above and n is an integer from 0 to 6; or unsaturated alkyl radical and R represents a group of formula ##STR6## wherein, either R.sup.1 represents hydrogen and R.sup.2 represents an alkylidene radical derived from a fragrant aldehyde of formula ##STR7## or R.sup.2 represents an alkylidene radical and R.sup.1 an alkyl radical, R.sup.1 and R.sup.2 being then derived from a flagrant ketone of formula ##STR8## and, optionally, being part of a ring such as indicated by the dotted line which contains 5 to 18 carbon atoms and can be substituted.
By an alkylidene radical derived from a fragrant aldehyde or ketone, it is understood here a radical which, upon the conversion of enol-ester (I) into said aldehyde or ketone, regenerates the corresponding R group which is the substituent of said aldehyde or ketone. Thus, for example, when the flagrant aldehyde is 3,7-dimethyl-6-octenal (R is 3,7-dimethyl-6-octenyl), the corresponding alkylidene radical in enol-ester (I) is 3,7-dimeth
REFERENCES:
patent: 4201680 (1980-05-01), Waltenberger et al.
patent: 4297407 (1981-10-01), Manca
patent: 5445747 (1995-08-01), Kvietok et al.
Paget Walter
Reichlin Daniel
Snowden Roger Leslie
Vial Christian
Walborsky Eric C.
Firmenich S.A.
Howard Jacqueline V.
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