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EP-4229162-B1 - LAUNDRY CARE ADDITIVE PARTICLES

EP4229162B1EP 4229162 B1EP4229162 B1EP 4229162B1EP-4229162-B1

Inventors

  • BARROS, ANDRE MARTIM
  • CARDOSO, MARIANA B T
  • SMETS, JOHAN
  • SMITH, STEVEN DARYL
  • VERSTRAETE, PIERRE DANIEL
  • WONG, VALERIE

Dates

Publication Date
20260506
Application Date
20211014

Claims (12)

  1. A composition comprising a plurality of particles (90), wherein said particles comprise: about 25% to about 99% by weight water soluble carrier; and a plurality of capsules (8) dispersed in said water soluble carrier, wherein said capsules comprise a core (4) and a shell (10) surrounding said core and said core comprises perfume raw materials; wherein said shell comprises from about 90% to 100%, optionally from about 95% to 100%, optionally from about 99% to 100% by weight of the shell of an inorganic material; wherein said shell comprises: a substantially inorganic first shell component comprising a condensed layer and a nanoparticle layer, wherein said condensed layer comprises a condensation product of a precursor, wherein said nanoparticle layer comprises inorganic nanoparticles, and wherein said condensed layer is disposed between said core and said nanoparticle layer; and an inorganic second shell component surrounding said first shell component, wherein said second shell component surrounds said nanoparticle layer; wherein said precursor comprises at least one compound selected from Formula (I), Formula (II), and a mixture thereof; wherein Formula (I) is (M v O z Y n ) w ; wherein Formula (II) is (M v O z Y n R 1 p ) w ; wherein for Formula (I), Formula (II), or the mixture thereof, each M is independently selected from 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, -OR 2 , halogen, NH 2 , -NHR 2 , -N(R 2 ) 2 , and wherein R 2 is a C 1 to C 20 alkyl, C 1 to C 20 alkylene, C 6 to C 22 aryl, or a 5-12 membered heteroaryl, wherein said heteroaryl comprises from 1 to 3 ring heteroatoms selected from O, N, and S, wherein R 3 is a H, C 1 to C 20 alkyl, C 1 to C 20 alkylene, C 6 to C 22 aryl, or a 5-12 membered heteroaryl, wherein said heteroaryl comprises from 1 to 3 ring heteroatoms selected from O, N, and S, w is from 2 to 2000; wherein for Formula (I) n is from 0.7 to (v-1); and wherein for Formula (II) n is from 0 to (v-1), each R 1 is independently selected from a C 1 to C 30 alkyl, a C 1 to C 30 alkylene, a C 1 to C 30 alkyl substituted with one or more of a halogen, - OCF 3 , -NO 2 , -CN, -NC, -OH, -OCN, -NCO, alkoxy, epoxy, amino, mercapto, acryloyl, CO 2 H, CO 2 alkyl, aryl, and heteroaryl, and a C 1 to C 30 alkylene substituted with one or more of a halogen, -OCF 3 , -NO 2 , -CN, -NC, -OH, -OCN, -NCO, alkoxy, epoxy, amino, mercapto, acryloyl, CO 2 H, CO 2 alkyl, aryl, and heteroaryl, and p is a positive number up to pmax, wherein pmax = 60 / [9*Mw(R 1 ) + 8], wherein Mw(R 1 ) is the molecular weight of the R 1 group.
  2. The composition according to Claim 1, wherein said inorganic material is selected from metal oxide, semi-metal oxides, metals, minerals, and mixtures thereof, optionally selected from SiO 2 , TiO 2 , Al 2 O 3 , ZrO 2 , ZnO 2 , CaCO 3 , Ca 2 SiO 4 , Fe 2 O 3 , Fe 3 O 4 , clay, gold, silver, iron, nickel, copper, and mixtures thereof, optionally selected from SiO 2 , TiO 2 , Al 2 O 3 , CaCO 3 , and mixtures thereof, optionally SiO 2 .
  3. The composition according to any of the preceding claims, wherein said precursor comprises at least one compound according to Formula (I).
  4. The composition according to any of the preceding claims, wherein said precursor comprises at least one compound according to Formula (II).
  5. The composition according to any of the preceding claims, wherein said plurality of capsules is characterized by one or more of the following: a mean volume weighted capsule diameter of about 10 µm to about 200 µm; a mean shell thickness of about 170 nm to about 1000 nm; a volumetric core-shell ratio of from about 50:50 to 99:1; the first shell component comprises no more than about 5wt% of organic content, by weight of said first shell component.
  6. The composition according to any of the preceding claims, wherein the compounds of Formula (I), Formula (II), or both are characterized by one or more of the following: a Polystyrene equivalent Weight Average Molecular Weight (Mw) of from about 700 Da to about 30,000Da; a degree of branching of 0.2 to about 0.6; and a molecular weight polydispersity index of about 1 to about 20.
  7. The composition according to any of the preceding claims, wherein M is silicon.
  8. The composition according to any of the preceding claims, wherein for Formula (I), Formula (II), or both Formula (I) and Formula (II), Y is OR, wherein R is selected from a methyl group, an ethyl group, a propyl group, and a butyl group, optionally an ethyl group.
  9. The composition according to any of the preceding claims, wherein said second shell component comprises a material selected from calcium carbonate, silica, and a combination thereof.
  10. The composition according to any of the preceding claims, wherein said inorganic nanoparticles of said first shell component comprise at least one of metal nanoparticles, mineral nanoparticles, metal-oxide nanoparticles or semi-metal oxide nanoparticles, optionally wherein said inorganic nanoparticles comprise one or more materials selected from SiO 2 , TiO 2 , Al 2 O 3 , Fe 2 O 3 , Fe 3 O 4 , CaCO 3 , clay, silver, gold, or copper, optionally wherein the inorganic nanoparticles comprise one or more materials selected from SiO 2 , CaCO 3 , Al 2 O 3 and clay.
  11. The composition according to any of the preceding claims, wherein said inorganic second shell component comprises at least one of SiO 2 , TiO 2 , Al 2 O 3 , CaCO 3 , Ca 2 SiO 4 , Fe 2 O 3 , Fe 3 O 4 , iron, silver, nickel, gold, copper, or clay, optionally at least one of SiO 2 or CaCO 3 , optionally SiO 2 .
  12. A process for treating laundry comprising the steps of: providing an article of laundry in a washing machine; dispensing said plurality of particles according to any of the preceding claims into said washing machine; and contacting said article of laundry during a wash sub-cycle of said washing machine with said plurality of particles.

Description

FIELD OF THE INVENTION Laundry care additive particles. The composition includes plurality of particles and the particles comprise a water soluble carrier and capsules having substantially inorganic shells, for example silica-based shells. The present disclosure further relates to methods of making and using such compositions. The present disclosure further relates to a dryer sheet that includes capsules having substantially inorganic shells, for example silica-based shells. BACKGROUND OF THE INVENTION Laundry care particle additives and dryer sheets are formulated with perfumed core/shell capsules. Typically, the cores of such capsules include perfume, and the shell often comprises a polymeric material such as an aminoplast, a polyurea, or a polyacrylate. These capsules are useful in delivering the benefit agent to a target surface, such as a fabric. Then, at various touchpoints, the capsules will rupture, releasing the perfume. However, perfume capsules are known to leak, thereby reducing the efficiency of the perfume delivery system. Furthermore, the perfume capsules typically encapsulate a variety of perfume raw materials ("PRMs"). Problematically, different PRMs may leak at different rates through the capsule wall. Over time, such as while the product is being transported or stored, the character of the perfume can change due to some PRMs leaking more than others. This can lead to olfactory experiences that are less desirable than what the manufacturer formulated for, quality control issues, and even consumer dissatisfaction when the freshness profile provided by the first dose of the product is different than that provided by the last dose. US 2009/247449 A1 discloses a benefit agent delivery particle comprising a core material comprising a benefit agent and a shell material comprising a water insoluble inorganic material and, optionally, an organic material, said shell material at least partially surrounding said core material. There is a need for laundry care particle additives and dryer sheets that include perfume delivery systems that have improved perfume leakage profiles. SUMMARY OF THE INVENTION The present disclosure relates to a composition comprising a plurality of particles, wherein said particles comprise: about 25% to about 99% by weight water soluble carrier; and a plurality of capsules dispersed in said water soluble carrier, wherein said capsules comprise a core and a shell surrounding said core and said core comprises perfume raw materials; wherein said shell comprises from about 90% to 100%, optionally from about 95% to 100%, optionally from about 99% to 100% by weight of the shell of an inorganic material; wherein said shell comprises: a substantially inorganic first shell component comprising a condensed layer and a nanoparticle layer,wherein said condensed layer comprises a condensation product of a precursor,wherein said nanoparticle layer comprises inorganic nanoparticles, andwherein said condensed layer is disposed between said core and said nanoparticle layer; andan inorganic second shell component surrounding said first shell component,wherein said second shell component surrounds said nanoparticle layer;wherein said precursor comprises at least one compound selected from Formula (I), Formula (II), and a mixture thereof;wherein Formula (I) is (MvOzYn)w;wherein Formula (II) is (MvOzYnR1p)w;wherein for Formula (I), Formula (II), or the mixture thereof, each M is independently selected from 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, halogen, NH2, -NHR2, -N(R2)2, and wherein R2 is a C1 to C20 alkyl, C1 to C20 alkylene, C6 to C22 aryl, or a 5-12 membered heteroaryl,wherein said heteroaryl comprises from 1 to 3 ring heteroatoms selected from O, N, and S,wherein R3 is a H, C1 to C20 alkyl, C1 to C20 alkylene, C6 to C22 aryl, or a 5-12 membered heteroaryl,wherein said heteroaryl comprises from 1 to 3 ring heteroatoms selected from O, N, and S, w is from 2 to 2000;wherein for Formula (I) n is from 0.7 to (v-1); andwherein for Formula (II) 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, and 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, and p is a positive number up to pmax, wherein pmax = 60 / [9*Mw(R1) + 8], wherein Mw(R1) is the molecular weight of the R1 group. The present disclosure further relates to a composition comprising a plurality of particles, wherein said particles comprise: about 25% to about 99% by weight water soluble carrier; and a plurality of capsules dispersed in said water soluble carrier, whe