US5885475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase change materials incorporated throughout the structure of polymer fibers
Assignee: University of Dayton
•
Filing: 1996-09-23
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Granted: 1999-03-23
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Expires: 2016-09-23
Abstract
Abstract The present invention is directed to a fiber composition comprising a fiber forming polymer and a phase change material integrally incorporated throughout the fiber forming polymer which is either a polyalkylene oxide, polyalkylene ether or mixture of various polyolefins. The phase change material has a melting temperature between about 15° C. and about 65° C. The fiber composition can be used as a loose fill insulating material for use in clothing or bedding articles or can be formed into a fabric for the same uses.
Inventors
- 👤 Ival O. Salyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:11
CPC Classifications
C; C09; C09K; C09K5/00; C09K5/02; C09K5/06; C09K5/063; D; D01; D01F; D01F1/00; D01F1/02; D01F1/10; D01F6/00; D01F6/44; D01F6/46; D01F6/58; D01F6/66; D01F6/88; D01F6/92; D01F6/94
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
72 words
An article of clothing formed, at least in part, from a melt mix polymer fiber, said melt mix polymer comprising a mixture by weight percent of about 15-22% of a polyolefin selected from the group consisting of high density polyethylene, low density polyethylene, and a higher melting polypropylene, about 7-12% of an ethylene-vinyl acetate copolymer, about 7-16% of silica particles, and about 55-60% of a long alkyl hydrocarbon chain phase change material.
Claim 2
Dependent Claim
72 words
An article of clothing formed, at least in part, from a melt mix polymer fiber, said melt mix polymer comprising a mixture by weight percent of about 15-22% of a polyolefin selected from the group consisting of high density polyethylene, low density polyethylene, and a higher melting polypropylene, about 7-12% of an ethylene-vinyl acetate copolymer, about 7-16% of silica particles, and about 55-60% of a long alkyl hydrocarbon chain phase change material.
Claim 3
Dependent Claim
22 words
The article of claim 1 wherein the phase change material has a melting temperature between about 15° C. and about 65° C.
Claim 4
Dependent Claim
29 words
The article of claim 1 wherein the melt mix polymer comprises about 60% phase change material, about 16-22% polyolefin, about 8-12% ethylene-vinyl acetate copolymer, and about 8-16% silica particles.
Claim 5
Dependent Claim
33 words
The article of claim 3 wherein the melt mix polymer comprises 55% phase change material, about 15-21% polyolefin, about 7-11% ethylene-vinyl acetate copolymer, about 7-15% silica particles and about 7.5% microwave absorbing additive.
Claim 6
Dependent Claim
19 words
The article of claim 1 wherein the melt mix polymer fiber is formed into a fiber by melt spinning.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-03-22 | 2002-09-21 | 2003-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-22 | 2006-09-21 | 2007-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-22 | 2010-09-21 | 2011-03-23 | $7700.00 | Window Closed / Lapsed |