# US 2020/0399559 A1 · Polymeric composite particles

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- Number: US 2020/0399559 A1
- Document ID: US20200399559A1
- Status: Published application
- Kind: A1
- Application number: 17/015,121
- Filed: 2020-09-09
- Published: 2020-12-24
- Earliest claimed: 2015-03-23
- Assignees: 3M Innovative Properties Company
- Applicants: 3M Innovative Properties Company
- Inventors: Michael W. Kobe; Mary M. Caruso Dailey; Luke E. Heinzen; Hassan Sahouani
- Web page: https://patentgrep.com/patent/US20200399559A1

## CPC

- C11B 9/0003: {Compounds of unspecified constitution defined by the chemical reaction for their preparation}
- A61K 8/0208: {Tissues; Wipes; Patches}
- A61K 8/0279: {Porous; Hollow}
- A61K 8/11: Encapsulated compositions
- A61K 8/345: {containing more than one hydroxy group}
- A61K 8/73: Polysaccharides
- A61K 8/8152: {Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers}
- A61K 8/85: Polyesters
- A61Q 13/00: Formulations or additives for perfume preparations (essential oils or perfumes per se C11B9/00)
- C08J 3/126: {Polymer particles coated by polymer, e.g. core shell structures}
- C08J 9/26: by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
- C11B 9/0034: {the ring containing six carbon atoms}
- C08J 2333/14: of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
- C08J 2335/02: Characterised by the use of homopolymers or copolymers of esters (C08J2335/06, C08J2335/08 take precedence)
- C11B: PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES (drying-oils C09F)
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61Q: SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)

## 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.

## Claims

### Claim 1

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, a fragrance positioned within the porous polymeric core, and a coating layer around the porous polymeric core, wherein the coating layer covers the entire exterior surface of the polymeric composite particle and wherein the coating layer comprises a thermoplastic polymer, a wax, or a mixture thereof;
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.

### Claim 2 (depends on 1)

The method of claim 1, wherein the fragrance vapor is detected at a concentration of at least 0.5 parts per billion.

### Claim 3 (depends on 1)

The method of claim 1, wherein the fragrance vapor is detected at a concentration of at least 1 part per million.

### Claim 4 (depends on 1)

The method of claim 1, wherein the fragrance vapor is detected by a gas sensor.

### Claim 5 (depends on 1)

The method of claim 1, wherein the minimum temperature is between 30 degrees Celsius and 150 degrees Celsius.

### Claim 6 (depends on 1)

The method of claim 1, wherein the composition is heated by a heat gun, a lamp, a torch, electrical resistance, heated liquid, exothermic chemical reaction, solar heat, body heat, or a combination thereof.

### Claim 7 (depends on 1)

The method of claim 1, wherein the composition is disposed in a blind location.

### Claim 8 (depends on 1)

The method of claim 1, wherein the blind location comprises within a housing, behind a wall, behind a ceiling, behind a floor, or a combination thereof.

### Claim 9 (depends on 8)

The method of claim 8, wherein the blind location is behind an opaque material.

### Claim 10 (depends on 9)

The method of claim 9, wherein the opaque material comprises a film, a sheet, a foam, a nonwoven material, a woven material, or a combination thereof.

### Claim 11 (depends on 9)

The method of claim 9, wherein the opaque material comprises concrete, metal, ceramic, drywall, wood, plastic, cloth, or combinations thereof.

### Claim 12 (depends on 1)

The method of claim 1, wherein the matrix comprises a film, a nonwoven matrix, a woven matrix, a foam, a multilayer construction, a suspension, a gel, or a combination thereof.

### Claim 13 (depends on 1)

The method of claim 1, wherein the matrix comprises a heat debondable adhesive.

### Claim 14 (depends on 1)

The method of claim 1, wherein the fragrance has a vapor pressure at 25 degrees Celsius of at least 0.05 mmHg.

### Claim 15 (depends on 1)

The method of claim 1, 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.

### Claim 16 (depends on 1)

The method of claim 1, wherein the coating layer comprises a linear thermoplastic polymer.

### Claim 17 (depends on 1)

The method of claim 1, wherein the coating layer comprises high density polyethylene.

### Claim 18 (depends on 1)

The method of claim 1, wherein the coating layer has a thickness in a range of 0.1 micrometers to 5 micrometers.

### Claim 19 (depends on 1)

The method of claim 1, wherein the matrix is disposed on one or more electrical wires.

### Claim 20 (depends on 1)

The method of claim 1, wherein the porous polymeric core comprises a polymerized product of a reaction mixture comprising:
i) a first phase comprising a surfactant and a compound of Formula (I)
HO(—CH2—CH(OH)—CH2—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)
CH2═C(R1)—(CO)—O[—CH2—CH2—O]p—(CO)—C(R1)═CH2 (II)
wherein
p is an integer equal to at least 1;
R1 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.