Freshening compositions and methods of atomizing freshening compositions with a thermally-actuated microfluidic cartridge

A method of jetting a composition, the method comprising the steps of:

• providing a composition, the composition comprising from 12 to 25 wt. % of solubilizing materials that are liquid at 20° C. selected from the group consisting of:
• phenylmethanol;
• 2-(2-hydroxypropoxy)propan-1-ol;
• 1-((1-propoxypropan-2-yl)oxy)propan-2-ol;
• 1-(2-methoxy propoxy)propan-2-ol;
• 4-allyl-2-methoxy phenol;
• 2-phenyl ethan-1-ol;
• and combinations thereof, the solubilizing materials each having:
• a Hansen polarity parameter (δp) of greater than 5 MPa0.5;
• a Hansen hydrogen-bonding parameter (δh) of greater than 9 MPa0.5;
• and
• a vapor pressure of less than 267 Pa;
• heating the composition with a thermal actuator;
• atomizing the heated composition from a nozzle in a direction that is from 0 degrees to 90 degrees from the direction of gravitational force.

A microfluidic cartridge releasably connectable with a housing, wherein the cartridge comprises a reservoir for containing a fluid composition and microfluidic die in fluid communication with the reservoir, wherein the microfluidic die is configured to dispense the fluid composition in a direction that is from 0 degrees to 90 degrees from the direction of gravitational force,

• wherein the fluid composition comprises from 12 to 25 wt. % of solubilizing materials that are liquid at 20° C. selected from the group consisting of:
• phenylmethanol;
• 2-(2-hydroxypropoxy)propan-1-ol;
• 1-((1-propoxy propan-2-yl)oxy)propan-2-ol;
• 1-(2-methoxypropoxy)propan-2-ol;
• 4-allyl-2-methoxyphenol;
• 2-phenylethan-1-ol;
• and combinations thereof, the solubilizing materials each having:
• a Hansen polarity parameter (δp) of greater than 5 MPa0.5;
• a Hansen hydrogen-bonding parameter (δh) of greater than 9 MPa0.5;
• and
• a vapor pressure of less than 267 Pa.

A microfluidic cartridge releasably connectable with a housing, wherein the cartridge comprises a reservoir for containing a fluid composition and microfluidic die in fluid communication with the reservoir, wherein the composition comprises from 12 to 25 wt. % of solubilizing materials that are liquid at 20° C. selected from the group consisting of:

• phenylmethanol;
• 2-(2-hydroxypropoxy)propan-1-ol;
• 1-((1-propoxypropan-2-yl)oxy)propan-2-ol;
• 1-(2-methoxypropoxy)propan-2-ol;
• 4-allyl-2-methoxyphenol;
• 2-phenylethan-1-ol;
• and combinations thereof, the solubilizing materials each having:
• a Hansen polarity parameter (δp) of greater than 5 MPa0.5;
• a Hansen hydrogen-bonding parameter (δh) of greater than 9 MPa0.5;
• and
• a vapor pressure of less than 1.4 Pa, measured at 25° C.