US 11,904,287 B2
Capsules
Mariana B T Cardoso, Ixelles (BE); Andre Martim Barros, Woluwe Saint Etienne (BE); Peter De Nies, Antwerp (BE); Pierre Daniel Verstraete, Lambert (BE); Valerie Wong, Mason, OH (US); Steven Daryl Smith, Fairfield, OH (US); and Isabelle Guimet, Gilles (BE)
Assigned to The Procter & Gamble Company, Cincinnati, OH (US)
Filed by The Procter & Gamble Company, Cincinnati, OH (US)
Filed on Apr. 17, 2020, as Appl. No. 16/851,173.
Claims priority of provisional application 62/913,191, filed on Oct. 10, 2019.
Claims priority of provisional application 62/835,011, filed on Apr. 17, 2019.
Prior Publication US 2020/0330948 A1, Oct. 22, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. B01J 13/06 (2006.01); C11B 9/00 (2006.01)
CPC B01J 13/06 (2013.01) [C11B 9/00 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A population of capsules, the capsules comprising:
an oil-based core comprising a benefit agent, and a substantially inorganic shell surrounding the core, wherein the shell comprises a first shell component comprising a condensed layer comprising a condensation of a precursor, wherein the precursor comprises at least one compound of Formula (I) or Formula (II):
(MvOzYn)w  (Formula I),
where M is one or more of silicon, titanium and aluminum, v is the valence number of M and is 3 or 4, z is from 0.5 to 1.6, each Y is independently selected from —OH, —OR2, halo,

OG Complex Work Unit Chemistry
—NH2, —NHR2, —N(R2)2, and

OG Complex Work Unit Chemistry
wherein R2 is a C1 to C20 alkyl, C1 to C20 alkylene, C6 to C22 aryl, or a 5-12 membered heteroaryl comprising from 1 to 3 ring heteroatoms selected from O, N, and S, R3 is a H, C1 to C20 alkyl, C1 to C20 alkylene, C6 to C22 aryl, or a 5-12 membered heteroaryl comprising from 1 to 3 ring heteroatoms selected from O, N, and S, n is from 0.7 to (v-1), and w is from 2 to 2000; or
(MvOzYnR1p)w  (Formula II),
where M is one or more of silicon, titanium and aluminum, v is the valence number of M and is 3 or 4, z is from 0.5 to 1.6, each Y is independently selected from —OH, —OR2, halo,

OG Complex Work Unit Chemistry
—NH2, —NHR2, —N(R2)2,

OG Complex Work Unit Chemistry
wherein R2 is selected from a C1 to C20 alkyl, C1 to C20 alkylene, C6 to C22 aryl, or a 5-12 membered heteroaryl comprising from 1 to 3 ring heteroatoms selected from O, N, and S, R3 is a H, C1 to C20 alkyl, C1 to C20 alkylene, C6 to C22 aryl, or a 5-12 membered heteroaryl comprising from 1 to 3 ring heteroatoms selected from O, N, and S, n is from 0 to (v-1), each R1 is independently selected from a C1 to C30 alkyl, a C1 to C30 alkylene, a C1 to C30 alkyl substituted with one or more of a halogen, —OCF3, —NO2, —CN, —NC, —OH, —OCN, —NCO, alkoxy, epoxy, amino, mercapto, acryloyl, CO2H, CO2alkyl, aryl, and heteroaryl, or a C1 to C30 alkylene substituted with one or more of a halogen, —OCF3, —NO2, —CN, —NC, —OH, —OCN, —NCO, alkoxy, epoxy, amino, mercapto, acryloyl, CO2H, CO2alkyl, aryl, and heteroaryl, p is present in an amount up to pmax, and w is from 2 to 2000;
wherein pmax=60/[9*Mw(R1)+8], where Mw(R1) is the molecular weight of the R1 group;
wherein the first shell component comprises up to 5 wt % of organic content;
wherein said population has a mean volume weighted capsule diameter of about 10 micrometers to about 200 micrometers, an average shell thickness of about 170 nm to about 1000 nm; and
wherein the mean volumetric core-shell ratio is from about 80:20 to about 98:2;
wherein the oil-based core is a liquid at room temperature;
wherein said population has a shell permeability from about 0.01% to about 40%.