Pro-fragrance linear acetals and ketals
AssigneeThe Procter & Gamble Company
InventorMark Robert Sivik
Life of this patent
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Abstract
The present invention relates to a fragrance delivery system for use in laundry detergent compositions including rinse-added and dryer-added fabric conditioning compositions which provides a long lasting “freshness” or “clean” scent to fabric. The compositions described herein deliver highly fabric substantive linear acetal and/or ketal pro-fragrances to the fabric surface during laundering wherein the pro-fragrances release their fragrance raw materials over a period of up to two weeks. The present invention also relates a method for delivering a pleasurable scent to fabric which has a lasting freshness quality by contacting the fabric with a laundry detergent composition which comprises the fragrance-releasable pro-fragrances.
Claims2
A pro-fragrance compound having the formula:
- wherein at least one of R1 or R2 is a C10 or C15 terpene, and any remaining R1 or R2 moiety is selected from the group consisting of:
- a) C8-C22 branched alkyl;
- b) C8-C22 linear or branched alkenyl;
- c) C2-C20 substituted or unsubstituted alkyleneoxy;
- d) C3-C20 substituted or unsubstituted alkyleneoxyalkyl;
- e) C7-C20 substituted or unsubstituted alkylenearyl;
- f) C6-C20 substituted or unsubstituted aryloxy;
- g) C7-C20 substituted or unsubstituted alkyleneoxyaryl;
- h) C7-C20 oxyalkylenearyl;
- i) C2-C20 alkylenecarboxy having the formula:
- —(CH2)xR9
- wherein R9 is —CHO, —CO2M;
- —CO2R10, —CONH2, —CONHR10, —CONR10R11, and mixtures thereof;
- wherein R10 and R11 are each independently C1-C12 linear or branched alkyl, M is hydrogen or a salt forming cation, x is an integer from 1 to 19;
- j) an anionic unit having the formula:
- —(CH2)yR12
- wherein R12 is —SO3M, —OSO3M, —PO3M, —OPO3M, or mixtures thereof;
- wherein M is hydrogen, one or more salt forming cations sufficient to satisfy charge balance, or mixtures thereof;
- y is an integer from 1 to about 22;
- k) and mixtures thereof;
- R3 and R4 are each independently hydrogen, methyl, ethyl, propyl, phenyl, benzyl, and mixtures thereof.
A pro-fragrance compound having the formula:
- wherein at least one of R1 or R2 is selected from the group consisting of linalool, dihydromyrcenol, tetrahydromyrcenol, geraniol, and citronellol;
- and any remaining R1 or R2 moiety is selected from the group consisting of:
- a) C8-C22 branched alkyl;
- b) C8-C22 linear or branched alkenyl;
- c) C2-C20 substituted or unsubstituted alkyleneoxy;
- d) C3-C20 substituted or unsubstituted alkyleneoxyalkyl;
- e) C7-C20 substituted or unsubstituted alkylenearyl;
- f) C6-C20 substituted or unsubstituted aryloxy;
- g) C7-C20 substituted or unsubstituted alkyleneoxyaryl;
- h) C7-C20 oxyalkylenearyl;
- i) C2-C20 alkylenecarboxy having the formula:
- —(CH2)xR9
- wherein R9 is —CHO, —CO2M;
- —CO2R10, —CONH2, —CONHR10, —CONR10R11, and mixtures thereof;
- wherein R10 and R11 are each independently C1-C12 linear or branched alkyl, M is hydrogen or a salt forming cation, x is an integer from 1 to 19;
- j) an anionic unit having the formula:
- —(CH2)yR12
- wherein R12 is —SO3M, —OSO3M, —PO3M, —OPO3M, or mixtures thereof;
- wherein M is hydrogen, one or more salt forming cations sufficient to satisfy charge balance, or mixtures thereof;
- y is an integer from 1 to about 22;
- k) and mixtures thereof;
- R3 and R4 are each independently hydrogen, methyl, ethyl, propyl, phenyl, benzyl, and mixtures thereof.
Dependencies are inferred from the claim text.