Polymeric composite particles

Abstract

Compositions are provided that include a matrix and a polymeric composite particles disposed in the matrix. The polymeric composite particles include a porous polymeric core and a fragrance positioned within the porous polymeric core. Polymeric composite particles are also provided including a porous polymeric core, a fragrance positioned within the porous polymeric core, and a coating layer around the porous polymeric core. Further, a method of determining a minimum temperature of a composition is provided including providing a composition including polymeric composite particles disposed in a matrix, heating the composition, releasing at least a portion of the fragrance as a vapor from the porous polymeric core of the polymeric composite particles at or above the minimum temperature, and detecting at least a portion of the fragrance vapor in a location outside of the matrix.

1 . A composition comprising a matrix and a plurality of polymeric composite particles disposed in the matrix, wherein the polymeric composite particles comprise a porous polymeric core and a fragrance positioned within the porous polymeric core, wherein the matrix comprises a film, a nonwoven matrix, a woven matrix, a foam, a multilayer construction, or a combination thereof. 
     
     
         2 . The composition of  claim 1 , wherein the matrix comprises a film, a multilayer construction, or a combination thereof. 
     
     
         3 . The composition of  claim 1 , wherein the matrix comprises an adhesive. 
     
     
         4 . The composition of  claim 1 , wherein the polymeric composite particles are not visible from an exterior of the composition. 
     
     
         5 . The composition of  claim 1 , wherein the fragrance has a vapor pressure at 25 degrees Celsius of at least 0.05 mmHg. 
     
     
         6 . The composition of  claim 1 , wherein the polymeric composite particles further comprise a coating layer around the porous polymer core, the coating layer comprising a thermoplastic polymer, a wax, or a mixture thereof. 
     
     
         7 . The composition of  claim 1 , wherein the porous polymeric core particle comprises a polymerized product of a reaction mixture comprising:
 i) a first phase comprising either
 1) water and a polysaccharide dissolved in the water; or 
 2) a surfactant and a compound of Formula (I)
   HO(—CH 2 —CH(OH)—CH 2 —O) n —H  (I)
 
 
 wherein n is an integer equal to at least 1, or a mixture thereof, and 
   ii) a second phase dispersed in the first phase, wherein a volume of the first phase is greater than a volume of the second phase and wherein the second phase comprises
 1) a first monomer composition comprising a monomer of Formula (II)
   CH 2 ═C(R 1 )—(CO)—O[—CH 2 —CH 2 —O] p —(CO)—C(R 1 )═CH 2   (II)
 
 
 wherein
 p is an integer equal to at least 1; 
 R 1  is hydrogen or alkyl; and 
 
 2) a poly(propylene glycol) having a weight average molecular weight of at least 500 grams/mole, 
   wherein the poly(propylene glycol) is removed from the polymerized product to provide the porous polymeric core.   
     
     
         8 . The composition of  claim 1 , wherein the matrix is disposed on one or more electrical wires. 
     
     
         9 . A method of determining a minimum temperature of a composition comprising:
 a) providing a composition comprising a plurality of polymeric composite particles disposed in a matrix, wherein the polymeric composite particles comprise a porous polymeric core and a fragrance positioned within the porous polymeric core;   b) heating the composition;   c) releasing at least a portion of the fragrance as a vapor from the porous polymeric core of the polymeric composite particles at or above the minimum temperature; and   d) detecting at least a portion of the fragrance vapor in a location outside of the matrix.   
     
     
         10 . The method of  claim 9 , wherein the fragrance vapor is detected at a concentration of at least 0.5 parts per billion. 
     
     
         11 . The method of  claim 9 , wherein the minimum temperature is between 30 degrees Celsius and 150 degrees Celsius. 
     
     
         12 . The method of  claim 9 , wherein the composition is disposed in a blind location. 
     
     
         13 . A polymeric composite particle comprising a) a porous polymeric core; b) a fragrance positioned within the porous polymeric core, wherein the fragrance is not covalently bonded to the porous polymeric core; and c) a coating layer around the porous polymeric core, wherein the coating layer comprises a thermoplastic polymer, a wax, or a mixture thereof; wherein the porous polymeric core comprises a polymerized product of a reaction mixture comprising:
 i) a first phase comprising either
 1) water and a polysaccharide dissolved in the water; or 
 2) a surfactant and a compound of Formula (I)
   HO(—CH 2 —CH(OH)—CH 2 —O) n —H  (I)
 
 
 wherein n is an integer equal to at least 1, or a mixture thereof; and 
   ii) a second phase dispersed in the first phase, wherein a volume of the first phase is greater than a volume of the second phase and wherein the second phase comprises
 1) a first monomer composition comprising a monomer of Formula (II)
   CH 2 ═C(R 1 )—(CO)—O[—CH 2 —CH 2 —O] p —(CO)—C(R 1 )═CH 2   (II)
 
 
 wherein
 p is an integer equal to at least 1; 
 R 1  is hydrogen or alkyl; and 
 
 2) a poly(propylene glycol) having a weight average molecular weight of at least 500 grams/mole, 
 wherein the poly(propylene glycol) is removed from the polymerized product to provide the porous polymeric core. 
   
     
     
         14 . The polymeric composite particle of  claim 13 , wherein the fragrance has a vapor pressure at 25 degrees Celsius of at least 0.05 mmHg. 
     
     
         15 . The polymeric composite particle of  claim 14 , wherein the coating layer comprises a silicone-based thermoplastic polymer, a (meth)acrylate-based thermoplastic polymer, an olefin-based thermoplastic polymer, a styrene-based thermoplastic polymer, a phenoxy-based resin, polyvinyl pyrrolidone, animal wax, vegetable wax, petroleum wax, hydrogenated vegetable oil, or a combination thereof.