The present invention relates to photo-labile pro-fragrance conjugates comprising:
a) a photo-labile unit which upon exposure to electromagnetic radiation is capable of releasing a pro-fragrance unit; and
b) a pro-fragrance unit, which when so released is either
i) a pro-fragrance compound capable of releasing a fragrance raw material; or
ii) a fragrance raw material.
The present invention relates to systems for delivering fragrances to a situs, and to laundry detergent compositions, fine fragrances, personal care and hair care compositions comprising said systems.
Compositions comprising photo-labile perfume delivery systems
申请人:The Procter & Gamble Company
公开号:US20030125220A1
公开(公告)日:2003-07-03
The present invention relates to photo-labile pro-fragrances, as well as a fragrance raw material delivery system comprising:
i) from about 0.001% to about 100% by weight, of a photo-labile pro-fragrance compound having the formula:
1
wherein OR is a unit derived from a fragrance raw material alcohol, HOR; R
1
is one or more electron donating groups; each R
2
is independently hydrogen, C
1
-C
12
alkyl, and mixtures thereof; X is selected from the group consisting of —OH, —NH
2
, —NHR
3
, and mixtures thereof; R
3
is hydrogen, C
1
-C
12
linear or branched alkyl, C
6
-C
10
aryl, and mixtures thereof; and
ii) optionally from about 0.001% to about 50% by weight, of one or more fragrance raw materials.
The present invention relates to photo-labile pro-fragrances, as well as a fragrance raw material delivery system comprising:
i) from about 0.001% to about 100% by weight, of a photo-labile pro-fragrance compound having the formula:
wherein OR is a unit derived from a fragrance raw material alcohol, HOR; R
1
is one or more electron donating groups; each R
2
is independently hydrogen, C
1
-C
12
alkyl, and mixtures thereof; X is selected from the group consisting of —OH, —NH
2
, —NHR
3
, and mixtures thereof; R
3
is hydrogen, C
1
-C
12
linear or branched alkyl, C
6
-C
10
aryl, and mixtures thereof; and ii) optionally from about 0.001% to about 50% by weight, of one or more fragrance raw materials.
The present invention relates to photo-labile pro-fragrance conjugates comprising:
a) a photo-labile unit which upon exposure to electromagnetic radiation is capable of releasing a pro-fragrance unit; and
b) a pro-fragrance unit, which when so released is either
i) a pro-fragrance compound capable of releasing a fragrance raw material; or
ii) a fragrance raw material.
The present invention relates to systems for delivering fragrances to a situs, and to laundry detergent compositions, fine fragrances, personal care and hair care compositions comprising said systems.