[미국특허]
Water-dispersible and multicomponent fibers from sulfopolyesters
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B32B-025/02
D04H-001/00
출원번호
US-0975459
(2010-12-22)
등록번호
US-8158244
(2012-04-17)
발명자
/ 주소
Gupta, Rakesh Kumar
George, Scott Ellery
Klosiewicz, Daniel William
Seo, Kab Sik
Fleenor, Coralie McKenna
Crain, Allen Lynn
출원인 / 주소
Eastman Chemical Company
대리인 / 주소
Owen, Polly C.
인용정보
피인용 횟수 :
12인용 특허 :
341
초록▼
Disclosed are multicomponent fibers derived from a blend of a sulfopolyester with a water non-dispersible polymer wherein the as-spun denier is less than about 6 and wherein the water dispersible sulfopolyester exhibits a melt viscosity of less than 12,000 poise measured at 240° C. at a strain rate
Disclosed are multicomponent fibers derived from a blend of a sulfopolyester with a water non-dispersible polymer wherein the as-spun denier is less than about 6 and wherein the water dispersible sulfopolyester exhibits a melt viscosity of less than 12,000 poise measured at 240° C. at a strain rate of 1 rad/sec, and wherein the sulfopolyester comprising less than about 25 mole % of residues of at least one sulfomonomer, based on the total moles of diacid or diol residues. The multicomponent fiber is capable of being drawn at a relatively high fiber speed, particularly at least about 2000 m/min, and may be used to produce microdenier fibers. Fibrous articles may be produced from the multicomponent fibers and microdenier fibers. Also disclosed is a process for multicomponent fibers, nonwoven fabrics, and microdenier webs.
대표청구항▼
1. A multicomponent fiber having a sheath core configuration, said multicomponent fiber comprising: (A) a sheath component comprising at least one water dispersible sulfopolyester and(B) a core component comprising at least one water non-dispersible polymer immiscible with said sulfopolyester;wherei
1. A multicomponent fiber having a sheath core configuration, said multicomponent fiber comprising: (A) a sheath component comprising at least one water dispersible sulfopolyester and(B) a core component comprising at least one water non-dispersible polymer immiscible with said sulfopolyester;wherein said water dispersible sulfopolyester has a Tg of at least 40° C. and exhibits a melt viscosity of less than about 12,000 poise measured at 240° C. at a strain rate of 1 rad/sec; and wherein said sulfopolyester comprises less than about 25 mole % of residues of at least one sulfomonomer, based on the total moles of diacid or diol residues. 2. The multicomponent fiber according to claim 1 wherein said water dispersible sulfopolyester exhibits a melt viscosity of less than about 6000 poise measured at 240° C. at a strain rate of 1 rad/sec. 3. The multicomponent fiber according to claim 1 wherein said sulfopolyester comprises less than about 15 mole % of said residues of at least one sulfomonomer, based on the total moles of diacid or diol residues. 4. The multicomponent fiber according to claim 1 wherein said sulfopolyester comprises between about 4 to about 25 mole % of said residues of said at least one sulfomonomer, based on the total moles of diacid or diol residues. 5. The multicomponent fiber according to claim 1 wherein said sulfopolyester comprises: (A) residues of one or more dicarboxylic acids;(B) about 5 to about 20 mole % of said residues of at least one sulfomonomer, based on the total moles of diacid or diol residues, wherein said sulfomonomer has 2 functional groups and one or more sulfonate groups attached to an aromatic or cycloaliphatic ring wherein said functional groups are hydroxyl, carboxyl, or a combination thereof; and(C) residues of one or more diols. 6. The multicomponent fiber according to claim 1 wherein said sulfopolyester comprises: (A) residues of one or more dicarboxylic acids;(B) about 5 to about 20 mole % of said residues of at least one sulfomonomer, based on the total moles of diacid or diol residues, wherein said sulfomonomer has 2 functional groups and one or more sulfonate groups attached to an aromatic or cycloaliphatic ring wherein said functional groups are hydroxyl, carboxyl, or a combination thereof;(C) one or more diol residues wherein at least 5 mole %, based on the total diol residues, is a poly(ethylene glycol) having a structure H—(OCH2—CH2)n—OH wherein n is an integer in the range of 2 to about 500; and D) 0 to about 25 mole %, based on the total repeating units, of residues of at least one branching monomer having 3 or more functional groups wherein said functional groups are hydroxyl, carboxyl, or a combination thereof. 7. The multicomponent fiber according to claim 5 wherein said dicarboxylic acids are selected from the group consisting of aliphatic diacids, cycloaliphatic dicarboxylic acids, aromatic dicarboxylic acids, and combinations thereof. 8. The multicomponent fiber according to claim 7 wherein said dicarboxylic acids are selected from the group consisting of succinic, glutaric, adipic, azelaic, sebacic, fumaric, maleic, itaconic, 1,3-cyclohexane dicarboxylic, 1,4-cyclohexanedicarboxylic, diglycolic, 2,5-norbornane-dicarboxylic, phthalic, terephthalic, 1,4-naphthalenedicarboxylic, 2,5-naphthalenedicarboxylic, 2,6-naphthalenedicarboxylic, 2,7-naphthalenedicarboxylic, diphenic, 4,4′-oxydibenzoic, 4,4′-sulfonyldibenzoic, isophthalic, and combinations thereof. 9. The multicomponent fiber according to claim 5 wherein said sulfomonomer is a metal sulfonate salt of a sulfophthalic acid, sulfoterephthalic acid, sulfoisophthalic acid, or combinations thereof. 10. The multicomponent fiber according to claim 5 wherein said diol residues are selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, poly(ethylene) glycols, 1,3-propanediol, 2,4-dimethyl-2-ethylhexane-1,3-diol, 2,2-dimethyl-1,3-propanediol, 2-ethyl-2-butyl-1,3-propanediol, 2-ethyl-2-isobutyl-1,3-propanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 2,2,4-trimethyl-1,6-hexanediol, thiodiethanol, 1,2-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, 2,2,4,4-tetramethyl-1,3-cyclobutanediol, p-xylylenediol, and combinations thereof. 11. The multicomponent fiber according to claim 1 wherein said multicomponent fiber contains less than 10 weight percent of a pigment or filler, based on the total weight of said multicomponent fiber. 12. The multicomponent fiber according to claim 1 wherein said water non-dispersible polymer is selected from the group consisting of polyolefins, polyesters, polyamides, polylactides, polycaprolactones, polycarbonates, polyurethanes, polyvinyl chlorides, cellulose esters, and combinations thereof. 13. The multicomponent fiber according to claim 1 wherein said water non-dispersible polymer is biodistintegratable as determined by DIN Standard 54900 or biodegradable as determined by ASTM Standard Method, D6340-98. 14. The multicomponent fiber according to claim 1 wherein said water non-dispersible polymer is an aliphatic-aromatic polyester. 15. A fibrous article comprising the multicomponent fiber according to claim 1. 16. The fibrous article of claim 15 wherein said fibrous article is selected from the group consisting of yarns, multifilament fabrics, cords, fabrics, melt blown webs, spunbonded webs, thermobonded webs, hydroentangled webs, non-woven webs or fabrics, and combinations thereof. 17. The fibrous article of claim 15 wherein said fibrous article comprises one or more layers of water-dispersible fibers, multicomponent fibers, or microdenier fibers. 18. The fibrous article of claim 15 wherein said article is selected from the group consisting of personal care products, health care products, feminine care products, wipes, fiber-containing cleaning products, medical and surgical care products, tapes, protective barriers, inserts for various personal hygiene and cleaning products, and packaging materials. 19. The fibrous article of claim 18 wherein said personal care, health care, feminine care, and medical and surgical care products are selected from the group consisting of infant diapers, child training pants, adult diapers, adult incontinence pads, feminine napkins, panty liners, tampons, medical wipes, tissues, gauzes, examination bed coverings, surgical masks, gowns, bandages, wound dressings, and tapes. 20. The fibrous article of claim 15 wherein said fibrous article is pre-moistened with various liquid compositions and used to deliver said compositions to a surface. 21. The fibrous article of claim 20 wherein said liquid compositions are selected from the group consisting of detergents, wetting agents, cleaning agents, skin care products, cosmetics, ointments, medications, emollients, and fragrances. 22. The multicomponent fiber according to claim 1 wherein said sulfopolyester further comprises residues of one or more dicarboxylic acids, wherein said residues of one or more dicarboxylic acids comprise residues of terephthalic acid. 23. The multicomponent fiber according to claim 22 wherein said residues of one or more dicarboxylic acids comprise residues of isophthalic acid. 24. The multicomponent fiber according to claim 22 wherein said residues of one or more dicarboxylic acids comprise about 50 to about 96 mole % of residues of terephthalic acid, based on the total acid residues. 25. The multicomponent fiber according to claim 24 wherein said residues of one or more dicarboxylic acids comprise residues of isophthalic acid. 26. The multicomponent fiber according to claim 22 wherein said residues of one or more dicarboxylic acids comprise about 60 to about 80 mole % of residues of terephthalic acid, based on the total acid residues. 27. The multicomponent fiber according to claim 26 wherein said sulfopolyester further comprises one or more diol residues comprising ethylene glycol residues and diethylene glycol residues. 28. The multicomponent fiber according to claim 22 wherein said residues of one or more dicarboxylic acids comprise at least about 50 mole % of residues of terephthalic acid, based on the total acid residues, wherein said sulfopolyester comprises at least about 4 mole % of said residues of at least one sulfomonomer, based on the total moles of diacid or diol residues, wherein said one or more diol residues comprise at least about 10 mole % of ethylene glycol residues, based on the total diol residues. 29. The multicomponent fiber according to claim 28 wherein said sulfopolyester comprises no more than about 10 mole % of said residues of at least one sulfomonomer, based on the total moles of diacid or diol residues, wherein said one or more diol residues comprise at least about 40 mole % of ethylene glycol residues, based on the total diol residues. 30. The multicomponent fiber according to claim 1 wherein said sulfopolyester has a Tg of at least 50° C. and exhibits a melt viscosity of less than about 10,000 poise measured at 240° C. at a strain rate of 1 rad/sec. 31. The multicomponent fiber according to claim 1 wherein said sulfopolyester has a Tg of at least 57° C. and exhibits a melt viscosity of less than about 6,000 poise measured at 240° C. at a strain rate of 1 rad/sec. 32. The multicomponent fiber according to claim 31 wherein said sulfopolyester comprises about 5 to about 20 mole % of said residues of at least one sulfomonomer, based on the total moles of diacid or diol residues. 33. The multicomponent fiber according to claim 1 consisting essentially of said sulfopolyester and said water non-dispersible polymer.
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Parker, Kenny Randolph; Klosiewicz, Daniel William; Munjal, Ramesh Chand; Rogers, David J; Tremaine, Dustin A, Processes to produce short cut microfibers.
Parker, Kenny Randolph; Klosiewicz, Daniel William; Munjal, Ramesh Chand; Rogers, Jr., David J.; Tremaine, Dustin A, Processes to produce short cut microfibers.
Parker, Kenny Randolph; Klosiewicz, Daniel William; Munjal, Ramesh Chand; Rogers, Jr., David J; Tremaine, Dustin A, Processes to produce short cut microfibers.
Parker, Kenny Randolph; Klosiewicz, Daniel William; Munjal, Ramesh Chand; Rogers, Jr., David J; Tremaine, Dustin A, Processes to produce short cut microfibers.
Parker, Kenny Randolph; Klosiewicz, Daniel William; Munjal, Ramesh Chand; Rogers, Jr., David J; Tremaine, Dustin A, Processes to produce short cut microfibers.
Parker, Kenny Randolph; Klosiewicz, Daniel William; Munjal, Ramesh Chand; Rogers, David J.; Tremaine, Dustin A., Processes to produce short-cut microfibers.
Gupta, Rakesh Kumar; Mitchell, Melvin Glenn; Klosiewicz, Daniel William; Clark, Mark Dwight; Anderson, Chris Delbert; Mitchell, Marvin Lynn; Mitchell, Paula Hines; Wolfe, Amber Layne, Wet-Laid process to produce a bound nonwoven article.
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