# US 12,215,032 B2 · Far infrared-emitting composition and far infrared-emitting fiber including the same

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- Number: US 12,215,032 B2
- Document ID: US12215032B2
- Status: Granted
- Kind: B2
- Application number: 17/508,382
- Filed: 2021-10-22
- Published: 2022-10-20
- Granted: 2025-02-04
- Earliest claimed: 2021-04-20
- Assignees: National Chi Nan University; The Heart of Taiwan Science, Innovation, Culture and Art Co., Ltd.
- Applicants: National Chi Nan University; The Heart of Taiwan Science, Innovation, Culture and Art Co., Ltd.
- Inventors: Long-Li Lai; Yan-Chih Lu; Han-Hsuan Kuo; Cheng-Hua Lee
- Web page: https://patentgrep.com/patent/US12215032B2

## CPC

- C01B 33/126: {Preparation of silica of undetermined type}
- C09K 11/06: containing organic luminescent materials
- C09K 11/02: Use of particular materials as binders, particle coatings or suspension media therefor
- C09K 11/59: containing silicon
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE

## Abstract

A far infrared (FIR)-emitting composition includes a first polymer component and a silicon dioxide composite particle which is prepared by subjecting a tetraalkoxysilane and a compound represented by Formula (A) to hydrolysis and condensation polymerization: Y—Si(ORa)3 (A), wherein each Ra independently represents a C1-4 alkyl group or a C1-4 alkanoyl group, Y represents X—R1—, a non-substituted C1-18 linear alkyl group or a non-substituted C3-18 branched alkyl group, and X and R1 are defined as set forth in the Specification and Claims. A FIR-emitting fiber including the FIR-emitting composition is also disclosed.

## Claims

### Claim 1

A far infrared (FIR)-emitting fiber, comprising a FIR-emitting composition, which includes:
a first polymer component; and
a silicon dioxide composite particle which is prepared by subjecting a tetraalkoxysilane and a compound represented by Formula (A) to hydrolysis and condensation polymerization,
Y—Si(ORa)3 (A),
wherein
each Ra independently represents a C1-4 alkyl group or a C1-4 alkanoyl group;
Y represents X-R1, wherein
R1 represents a C1-5 alkylene group; and
X represents
wherein each R3 independently represents a non-substituted C2-8 linear alkyl or alkoxyl group, or a non-substituted C3-8 branched alkyl or alkoxyl group;
Z represents a non-substituted phenyl group or a phenyl group substituted by at least one R3; and
each of A and B independently represents —NR4R5, —OR6 or —SR7, in which R4 is a hydrogen atom, a non-substituted C1-22 linear alkyl group or a non-substituted C3-22 branched alkyl group; and each of R5 to R7 independently represents a non-substituted C1-22 linear alkyl group or a non-substituted C3-22 branched alkyl group;
the FIR-emitting fiber further comprising a second polymer component,
wherein based on a total weight of said second polymer component and said FIR-emitting composition, said silicon dioxide composite particle is present in an amount ranging from 0.5 wt % to 50.0 wt %.

### Claim 2 (depends on 1)

The FIR-emitting fiber of claim 1, wherein each R3 independently represents a non-substituted C2-8 linear alkyl group.

### Claim 3 (depends on 1)

The FIR-emitting fiber of claim 1, wherein said tetraalkoxysilane is tetraethoxysilane.

### Claim 4 (depends on 1)

The FIR-emitting fiber of claim 1, wherein said first polymer component includes polyester.