US2002094938A1PendingUtilityA1
Photo-labile pro-fragrance conjugates
Est. expiryNov 8, 2020(expired)· nominal 20-yr term from priority
C07D 207/38A61Q 5/12A61K 8/49A61Q 13/00C11D 3/507A61K 2800/57C07D 263/04C07C 235/34A61K 8/0229A61Q 5/02A61Q 19/10A61Q 15/00C07D 265/06A61K 8/35
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Claims
Abstract
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.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1 . A photo-labile pro-fragrance conjugate 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.
2 . A compound according to claim 1 wherein said photo-labile pro-fragrance conjugate has the formula:
wherein R is a fragrance raw material or a unit capable of releasing a fragrance raw material; each R 1 is independently hydrogen, a unit which can substitute for hydrogen, C 1 -C 12 substituted or unsubstituted hydrocarbyl unit, each R 2 is independently hydrogen, C 1 -C 12 substituted or unsubstituted hydrocarbyl unit, and mixtures thereof; X is selected from the group consisting of —OH, —OC(O)R 12 , —OC(O)OR 12 , —NHR 12 , and mixtures thereof; R 12 is H, C 1 -C 12 substituted or unsubstituted alkyl, and mixtures thereof.
3 . A compound according to claim 2 wherein X is —OH.
4 . A compound according to claim 2 wherein R 1 is hydrogen.
5 . A compound according to claim 3 wherein said conjugate has the formula:
6 . A compound according to claim 3 wherein said conjugate has the formula:
wherein R 2 is methyl or ethyl.
7 . A compound according to claim 4 wherein said conjugate has the formula:
8 . A compound according to claim 2 wherein said R 1 is one or more electron donating groups selected from the group consisting of hydroxy, C 1 -C 12 linear or branched alkoxy, —N(R 12 ) 2 , and mixtures thereof; R 12 is H, C 1 -C 12 alkyl, and mixtures thereof.
9 . A compound according to claim 8 wherein X is hydroxy.
10 . A compound according to claim 2 wherein R 2 are each hydrogen.
11 . A compound according to claim 2 wherein R has the formula:
wherein each R 3 is independently hydrogen, substituted or unsubstituted C 1 -C 30 hydrocarbyl, and mixtures thereof.
12 . A compound according to claim 11 wherein R has the formula:
wherein each R 4 is independently selected from the group consisting of:
i) hydrogen;
ii) C 1 -C 22 substituted or unsubstituted, branched or unbranched alkyl;
iii) C 2 -C 22 substituted or unsubstituted, branched or unbranched alkenyl;
iv) C 2 -C 20 substituted or unsubstituted, branched or unbranched hydroxyalkyl;
v) C 7 -C 20 substituted or unsubstituted alkylenearyl;
vi) C 3 -C 20 substituted or unsubstituted cycloalkyl;
vii) C 6 -C 20 aryl;
viii) C 5 -C 20 heteroaryl units comprising one or more heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur, and mixtures thereof;
ix) two R 4 units can be taken together to form one or more aromatic or non-aromatic, heterocyclic or non-heterocyclic, single rings, fused rings, bicyclo rings, spiroannulated rings, or mixtures thereof, said rings comprising from 3 to 20 carbon atoms and one or more heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur, and mixtures thereof;
x) and mixtures thereof;
G 1 and G 2 are each independently hydrogen, C 1 -C 20 linear or branched hydrocarbyl, —Y, —C(O)Y, and mixtures thereof; Y is C 6 -C 10 substituted or unsubstituted cyclic alkyl.
13 . A compound according to claim 12 wherein Y is selected from the group consisting of 2,6,6-trimethylcyclohex-2-enyl, 2,6,6-trimethylcyclohex-1-enyl, 2,6,6-trimethylcyclohex-l-enyl, 2,6,6-trimethylcyclohex-3-enyl, and mixtures thereof.
14 . A compound according to claim 11 wherein R has the formula:
wherein G 1 and G 2 are each independently —CH 3 , —C(O)CH 3 , —Y, —C(O)Y, and mixtures thereof; Y is selected from the group consisting of:
i) 2,6,6-trimethylcyclohex-2-enyl having the formula:
ii) 2,6,6-trimethylcyclohex-1-enyl having the formula:
iii) 2,6,6-trimethylcyclohex-1-enyl having the formula:
iv) 2,6,6-trimethylcyclohex-3-enyl having the formula:
v) and mixtures thereof.
15 . A compound according to claim 11 having the formula:
wherein R 1 is hydrogen, hydroxyl, and mixtures thereof.
16 . A compound according to claim 15 having the formula:
17 . A compound according to claim 2 wherein R has the formula:
wherein Z is oxygen or sulfur; m is from 1 to 3; R 5 units are selected from:
a) C 6 -C 22 substituted or unsubstituted linear alkyl
b) C 6 -C 22 substituted or unsubstituted branched alkyl;
c) C 6 -C 22 substituted or unsubstituted linear alkenyl;
d) C 6 -C 22 substituted or unsubstituted branched alkenyl;
e) C 6 -C 22 substituted or unsubstituted cycloalkyl;
f) C 6 -C 22 substituted or unsubstituted branched cycloalkyl;
g) C 6 -C 22 substituted or unsubstituted cycloalkenyl;
h) C 6 -C 22 substituted or unsubstituted branched cycloalkenyl;
i) C 6 -C 22 substituted or unsubstituted aryl;
j) C 6 -C 22 substituted or unsubstituted heterocyclicalkyl;
k) C 6 -C 22 substituted or unsubstituted heterocyclicalkenyl;
l) and mixtures thereof;
R 6 units comprise hydrogen or R 5 ;
R 7 is independently selected from the group consisting of:
a) R 6 ;
b) hydroxyl;
c) a carbonyl comprising unit having the formula:
—(CH 2 ) x COR 8
wherein R 8 is:
i) —OH;
ii) —OR 9 wherein R 9 is hydrogen, C 1 -C 15 substituted linear alkyl, C 11 -C 1 5 unsubstituted linear alkyl, C 1 -C 15 substituted branched alkyl, C 11 -C 15 unsubstituted branched alkyl, C 2 -C 22 substituted or unsubstituted linear alkenyl, C 3 -C 22 substituted or unsubstituted branched alkenyl, or mixtures thereof,
iii) —N(R 10 ) 2 wherein R 10 is hydrogen, C 1 -C 6 substituted or unsubstituted linear alkyl, C 3 -C 6 substituted or unsubstituted branched alkyl, or mixtures thereof;
iv) C 1 -C 22 substituted or unsubstituted linear alkyl;
v) C 1 -C 22 substituted or unsubstituted branched alkyl;
vi) C 2 -C 22 substituted or unsubstituted linear alkenyl;
vii) C 3 -C 22 substituted or unsubstituted branched alkenyl;
viii) C 3 -C 22 substituted or unsubstituted cycloalkyl;
ix) C 6 -C 22 substituted or unsubstituted aryl;
x) C 6 -C 22 substituted or unsubstituted heterocyclicalkyl;
xi) C 6 -C 22 substituted or unsubstituted heterocyclicalkenyl;
the index x is from 0 to 22;
d) alkyleneoxy units having the formula:
—[C(R 11 ) 2 ] y [C(R 11 ) 2 C(R 11 ) 2 O] z R 11
wherein each R 11 is independently;
i) hydrogen;
ii) —OH;
iii) C 1 -C 4 alkyl;
iv) or mixtures thereof; two R 11 units can be taken together to form a C 3 -C 6 spiroannulated ring, carbonyl unit, or mixtures thereof; y has the value from 0 to 10, z has the value from 1 to 50;
e) and mixtures thereof; any two R 7 units can be taken together to form:
i) a carbonyl moiety;
ii) a C 3 -C 6 spiroannulated ring;
iii) a heterocyclic aromatic ring comprising from 5 to 7 atoms;
iv) a non-heterocyclic aromatic ring comprising from 5 to 7 atoms;
v) a heterocyclic ring comprising from 5 to 7 atoms;
vi) a non-heterocyclic ring comprising from 5 to 7 atoms;
vii) or mixtures thereof.
18 . A compound according to claim 17 wherein R has the formula:
wherein R 6 is selected from the group consisting of hydrogen and methyl.
19 . A compound according to claim 17 wherein R has the formula:
wherein R 6 is selected from the group consisting of hydrogen and methyl; each R 7 is independently hydrogen, methyl or —C(O)OR 9 , and mixtures thereof; R 9 is hydrogen, C 1 -C 12 alkyl, and mixtures thereof.
20 . A composition according to claim 17 having the formula:
21 . A composition according to claim 17 having the formula:
22 . A compound according to claim 11 having the formula:
wherein R′ is derived from an alcohol having the formula R′OH.
23 . A photo-labile pro-fragrance conjugate having the formula:
[photo-labile unit]—(L)n—[pro-fragrance unit]
wherein said [photo-labile unit] is selected from the group consisting of:
wherein each R 1 is independently hydrogen, a unit which can substitute for hydrogen, C 1 -C 12 substituted or unsubstituted hydrocarbyl unit; said units which can substitute for hydrogen are selected from the group consisting of;
i) —NHCOR 30 ;
ii) —COR 30 ;
iii) —COOR 30 ;
iv) —COCH=CH 2 ;
v) —C(=NH)NH 2 ;
vi) —N(R 30 ) 2 ;
vii) —NHC 6 H 5 ;
viii) =CHC 6 H 5 ;
ix) —CON(R 30 ) 2 ;
x) —CONHNH 2 ;
xi) —NHCN;
xii) —OCN;
xiii) —CN;
xiv) F, Cl, Br, l, and mixtures thereof;
xv) =O;
xvi) —OR 30 ;
xvii) —NHCHO;
xviii) —OH;
xix) —NHN(R 3 ) 2 ;
xx) =NR 30 ;
xxi) =NOR 30 ;
xxii) —NHOR 30 ;
xxiii) —CNO;
xxiv) —NCS;
xxv) =C(R 30 ) 2 ;
xxvi) —SO 3 M;
xxvii) —OSO 3 M;
xxviii) —SCN;
xxix) —P(O)H 2 ;
xxx) —PO 2 ;
xxxi) —P(O)(OH) 2 ;
xxxii) —SO 2 NH 2 ;
xxxiii) —S0 2 R 30 ;
xxxiv) —NO 2 ;
xxxv) —CF 3 , —CCl 3 , —CBr 3 ;
xxxvi) and mixtures thereof; wherein R 30 is hydrogen, C 1 -C 20 linear or branched alkyl, C 6 -C 20 aryl, C 7 -C 20 alkylenearyl, and mixtures thereof; M is hydrogen, or a salt forming cation;
each R 2 is independently hydrogen, C 1 -C 12 alkyl, and mixtures thereof; X is selected from the group consisting of —OH, —NHR 12 , and mixtures thereof;
R 12 is H, C 1 -C 12 alkyl, and mixtures thereof;
B is selected from the group consisting of:
L units are —OC(O)—, —NR 3 C(O)—, —OC(R 3 R 4 )—, —C(O)—, and mixtures thereof; n is 0 or 1;
the [pro-fragrance unit] has the formula:
wherein each R 3 is independently hydrogen, substituted or unsubstituted C 1 -C 30 hydrocarbyl, and mixtures thereof.
24 . A compound according to claim 23 wherein said [photo-labile unit] has the formula:
wherein R 1 is hydrogen, hydroxyl, and mixtures thereof.
25 . A compound according to claim 23 wherein said [pro-fragrance unit] has the formula:
wherein each R 4 is independently selected from the group consisting of:
i) hydrogen;
ii) C 1 -C 22 substituted or unsubstituted, branched or unbranched alkyl;
iii) C 2 -C 22 substituted or unsubstituted, branched or unbranched alkenyl;
iv) C 2 -C 20 substituted or unsubstituted, branched or unbranched hydroxyalkyl;
v) C 7 -C 20 substituted or unsubstituted alkylenearyl;
vi) C 3 -C 20 substituted or unsubstituted cycloalkyl;
vii) C 6 -C 20 aryl;
viii) C 5 -C 20 heteroaryl units comprising one or more heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur, and mixtures thereof;
ix) two R 4 units can be taken together to form one or more aromatic or non-aromatic, heterocyclic or non-heterocyclic, single rings, fused rings, bicyclo rings, spiroannulated rings, or mixtures thereof, said rings comprising from 3 to 20 carbon atoms and one or more heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur, and mixtures thereof;
x) and mixtures thereof; G 1 and G 2 are each independently hydrogen, C 1 -C 20 linear or branched hydrocarbyl, —Y, —C(O)Y, and mixtures thereof; Y is C 6 -C 10 substituted or unsubstituted cyclic alkyl.
26 . A compound according to claim 25 wherein Y is selected from the group consisting of 2,6,6-trimethylcyclohex-2-enyl, 2,6,6-trimethylcyclohex- 1-enyl, 2,6,6-trimethylcyclohex- 1-enyl, 2,6,6-trimethylcyclohex-3-enyl, and mixtures thereof.
27 . A compound according to claim 23 wherein said [pro-fragrance unit] has the formula:
wherein G 1 and G 2 are each independently —CH 3 , —C(O)CH 3 , —Y, —C(O)Y, and mixtures thereof; Y is selected from the group consisting of:
i) 2,6,6-trimethylcyclohex-2-enyl having the formula:
ii) 2,6,6-trimethylcyclohex-1-enyl having the formula:
iii) 2,6,6-trimethylcyclohex-1-enyl having the formula:
iv) 2,6,6-trimethylcyclohex-3-enyl having the formula:
v) and mixtures thereof.
28 . A compound according to claim 23 wherein said [pro-fragrance unit] has the formula:
wherein Z is oxygen or sulfur; m is from 1 to 3; R 5 units are selected from:
a) C 6 -C 22 substituted or unsubstituted linear alkyl
b) C 6 -C 22 substituted or unsubstituted branched alkyl;
c) C 6 -C 22 substituted or unsubstituted linear alkenyl;
d) C 6 -C 22 substituted or unsubstituted branched alkenyl;
e) C 6 -C 22 substituted or unsubstituted cycloalkyl;
f) C 6 -C 22 substituted or unsubstituted branched cycloalkyl;
g) C 6 -C 22 substituted or unsubstituted cycloalkenyl;
h) C 6 -C 22 substituted or unsubstituted branched cycloalkenyl;
i) C 6 -C 22 substituted or unsubstituted aryl;
j) C 6 -C 22 substituted or unsubstituted heterocyclicalkyl;
k) C 6 -C 22 substituted or unsubstituted heterocyclicalkenyl;
l) and mixtures thereof;
R 6 units comprise hydrogen or R 5 ;
R 7 is independently selected from the group consisting of:
a) R 6 ;
b) hydroxyl;
c) a carbonyl comprising unit having the formula:
—(CH 2 ) x COR 8
wherein R 8 is:
i) —OH;
ii) —OR 9 wherein R 9 is hydrogen, C 1 -C 15 substituted linear alkyl, C 11 -C 15 unsubstituted linear alkyl, C 1 -C 15 substituted branched alkyl, C 11 -C 15 unsubstituted branched alkyl, C 2 -C 22 substituted or unsubstituted linear alkenyl, C 3 -C 22 substituted or unsubstituted branched alkenyl, or mixtures thereof,
iii) —N(R 10 ) 2 wherein R 10 is hydrogen, C 1 -C 6 substituted or unsubstituted linear alkyl, C 3 -C 6 substituted or unsubstituted branched alkyl, or mixtures thereof;
iv) C 1 -C 22 substituted or unsubstituted linear alkyl;
v) C 1 -C 22 substituted or unsubstituted branched alkyl;
vi) C 2 -C 22 substituted or unsubstituted linear alkenyl;
vii) C 3 -C 22 substituted or unsubstituted branched alkenyl;
viii) C 3 -C 22 substituted or unsubstituted cycloalkyl;
ix) C 6 -C 22 substituted or unsubstituted aryl;
x) C 6 -C 22 substituted or unsubstituted heterocyclicalkyl;
xi) C 6 -C 22 substituted or unsubstituted heterocyclicalkenyl;
the index x is from 0 to 22;
d) alkyleneoxy units having the formula:
—[C(R 11 ) 2 ] y [C(R 11 ) 2 C(R 11 ) 2 O] z R 11
wherein each R 11 is independently;
i) hydrogen;
ii) —OH;
iii) C 1 -C 4 alkyl;
iv) or mixtures thereof;
two R 11 units can be taken together to form a C 3 -C 6 spiroannulated ring, carbonyl unit, or mixtures thereof; y has the value from 0 to 10, z has the value from 1 to 50;
e) and mixtures thereof; any two R 7 units can be taken together to form:
i) a carbonyl moiety;
ii) a C 3 -C 6 spiroannulated ring;
iii) a heterocyclic aromatic ring comprising from 5 to 7 atoms;
iv) a non-heterocyclic aromatic ring comprising from 5 to 7 atoms;
v) a heterocyclic ring comprising from 5 to 7 atoms;
vi) a non-heterocyclic ring comprising from 5 to 7 atoms;
vii) or mixtures thereof.
29 . A photo-labile pro-fragrance conjugate delivery system comprising:
A) from about 0.001% by weight, of a photo-activated pro-fragrance conjugate, said conjugate comprising:
a) a photo-labile unit which upon exposure to electromagnetic radiation is capable of releasing a pro-fragrance unit;
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; and
B) the balance carriers and adjunct ingredients.
30 . A system according to claim 29 wherein said photo-labile pro-fragrance conjugate has the formula:
wherein R is a fragrance raw material or a unit capable of releasing a fragrance raw material; each R 1 is independently hydrogen, a unit which can substitute for hydrogen, C 1 -C 12 substituted or unsubstituted hydrocarbyl unit, each R 2 is independently hydrogen, C 1 -C 12 substituted or unsubstituted hydrocarbyl unit, and mixtures thereof; X is selected from the group consisting of —OH, —OC(O)R 12 , —OC(O)OR 12 , —NHR 12 , and mixtures thereof; R 12 is H, C 1 -C 12 substituted or unsubstituted alkyl, and mixtures thereof.
31 . A system according to claim 30 wherein R has the formula selected from the group consisting of:
iii) and mixtures thereof;
wherein each R 4 is independently selected from the group consisting of:
i) hydrogen;
ii) C 1 -C 22 substituted or unsubstituted, branched or unbranched alkyl;
iii) C 2 -C 22 substituted or unsubstituted, branched or unbranched alkenyl;
iv) C 2 -C 20 substituted or unsubstituted, branched or unbranched hydroxyalkyl;
v) C 7 -C 20 substituted or unsubstituted alkylenearyl;
vi) C 3 -C 20 substituted or unsubstituted cycloalkyl;
vii) C 6 -C 20 aryl;
viii) C 5 -C 20 heteroaryl units comprising one or more heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur, and mixtures thereof;
ix) two R 4 units can be taken together to form one or more aromatic or non-aromatic, heterocyclic or non-heterocyclic, single rings, fused rings, bicyclo rings, spiroannulated rings, or mixtures thereof, said rings comprising from 3 to 20 carbon atoms and one or more heteroatoms selected from the group consisting of nitrogen, oxygen, sulfur, and mixtures thereof;
x) and mixtures thereof; G 1 and G 2 are each independently hydrogen, C 1 -C 20 linear or branched hydrocarbyl, —Y, —C(O)Y, and mixtures thereof; Y is C 6 -C 10 substituted or unsubstituted cyclic alkyl;
Z is oxygen or sulfur; m is from 1 to 3;
R 5 units are selected from:
a) C 6 -C 22 substituted or unsubstituted linear alkyl
b) C 6 -C 22 substituted or unsubstituted branched alkyl;
c) C 6 -C 22 substituted or unsubstituted linear alkenyl;
d) C 6 -C 22 substituted or unsubstituted branched alkenyl;
e) C 6 -C 22 substituted or unsubstituted cycloalkyl;
f) C 6 -C 22 substituted or unsubstituted branched cycloalkyl;
g) C 6 -C 22 substituted or unsubstituted cycloalkenyl;
h) C 6 -C 22 substituted or unsubstituted branched cycloalkenyl;
i) C 6 -C 22 substituted or unsubstituted aryl;
j) C 6 -C 22 substituted or unsubstituted heterocyclicalkyl;
k) C 6 -C 22 substituted or unsubstituted heterocyclicalkenyl;
l) and mixtures thereof;
R 6 units comprise hydrogen or R 5 ;
R 7 is independently selected from the group consisting of:
a) R 6 ;
b) hydroxyl;
c) a carbonyl comprising unit having the formula:
—(CH 2 ) x COR 8
wherein R 8 is:
i) —OH;
ii) —OR 9 wherein R 9 is hydrogen, C 1 -C 15 substituted linear alkyl, C 11 -C 15 unsubstituted linear alkyl, C 1 -C 15 substituted branched alkyl, C 1 -C 15 unsubstituted branched alkyl, C 2 -C 22 substituted or unsubstituted linear alkenyl, C 3 -C 22 substituted or unsubstituted branched alkenyl, or mixtures thereof,
iii) —N(R 10 ) 2 wherein R 10 is hydrogen, C 1 -C 6 substituted or unsubstituted linear alkyl, C 3 -C 6 substituted or unsubstituted branched alkyl, or mixtures thereof;
iv) C 1 -C 22 substituted or unsubstituted linear alkyl;
v) C 1 -C 22 substituted or unsubstituted branched alkyl;
vi) C 2 -C 22 substituted or unsubstituted linear alkenyl;
vii) C 3 -C 22 substituted or unsubstituted branched alkenyl;
viii) C 3 -C 22 substituted or unsubstituted cycloalkyl;
ix) C 6 -C 22 substituted or unsubstituted aryl;
x) C 6 -C 22 substituted or unsubstituted heterocyclicalkyl;
xi) C 6 -C 22 substituted or unsubstituted heterocyclicalkenyl;
the index x is from 0 to 22;
d) alkyleneoxy units having the formula:
—[C(R 11 ) 2 ] y [C(R 11 ) 2 C(R 11 ) 2 O] z R 11
wherein each R 11 is independently;
i) hydrogen;
ii) —OH;
iii) C 1 -C 4 alkyl;
iv) or mixtures thereof;
two R 11 units can be taken together to form a C 3 -C 6 spiroannulated ring, carbonyl unit, or mixtures thereof; y has the value from 0 to 10, z has the value from 1 to 50;
e) and mixtures thereof;
any two R 7 units can be taken together to form:
i) a carbonyl moiety;
ii) a C 3 -C 6 spiroannulated ring;
iii) a heterocyclic aromatic ring comprising from 5 to 7 atoms;
iv) a non-heterocyclic aromatic ring comprising from 5 to 7 atoms;
v) a heterocyclic ring comprising from 5 to 7 atoms;
vi) a non-heterocyclic ring comprising from 5 to 7 atoms;
vii) or mixtures thereof.
32 . A laundry detergent comprising:
A) from about 0.001% by weight, of a photo-activated pro-fragrance conjugate, said conjugate comprising:
a) a photo-labile unit which upon exposure to electromagnetic radiation is capable of releasing a pro-fragrance unit;
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;
B) from about 10% by weight, of a detersive surfactant; and C) the balance carriers and adjunct ingredients.
33 . A perfume or fine fragrance comprising:
A) from about 0.001% by weight, of one or more photo-activated pro-fragrance conjugates, said conjugates each comprising:
a) a photo-labile unit which upon exposure to electromagnetic radiation is capable of releasing a pro-fragrance unit;
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;
B) from about 0.01% to about 99% by weight, of an admixture of fragrance raw materials; and C) the balance carriers and adjunct ingredients.
34 . A hair shampoo or conditioner comprising:
A) from about 0.001% by weight, of one or more photo-activated pro-fragrance conjugates, said conjugates each comprising:
a) a photo-labile unit which upon exposure to electromagnetic radiation is capable of releasing a pro-fragrance unit;
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;
B) from about 0.01% to about 5% by weight, of an admixture of fragrance raw materials; and C) the balance carriers and adjunct ingredients.Join the waitlist — get patent alerts
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