IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0981960
(2010-12-30)
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등록번호 |
US-8236713
(2012-08-07)
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발명자
/ 주소 |
- Haile, William Alston
- George, Scott Ellery
- Hale, Wesley Raymond
- Jenkins, Waylon Lewellyn
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
12 인용 특허 :
356 |
초록
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Disclosed are water-dispersible fibers derived from sulfopolyesters having a Tg of at least 25° C. The fibers may contain a single sulfopolyester or a blend of a sulfopolyester with a water-dispersible or water-nondispersible polymer. Also disclosed are multicomponent fibers comprising a water dispe
Disclosed are water-dispersible fibers derived from sulfopolyesters having a Tg of at least 25° C. The fibers may contain a single sulfopolyester or a blend of a sulfopolyester with a water-dispersible or water-nondispersible polymer. Also disclosed are multicomponent fibers comprising a water dispersible sulfopolyester having a Tg of at least 57° C. and a water non-dispersible polymer. The multicomponent fibers may be used to produce microdenier fibers. Fibrous articles may be produced from the water-dispersible fibers, multicomponent fibers, and microdenier fibers. The fibrous articles include water-dispersible and microdenier nonwoven webs, fabrics, and multilayered articles such as wipes, gauze, tissue, diapers, panty liners, sanitary napkins, bandages, and surgical dressings. Also disclosed is a process for water-dispersible fibers, nonwoven fabrics, and microdenier webs. The fibers and fibrous articles have further applications in flushable personal care and cleaning products, disposable protective outerwear, and laminating binders.
대표청구항
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1. A woven article comprising at least one multicomponent fiber having a shaped cross section, wherein said multicomponent fiber comprises: A) a water dispersible sulfopolyester having a glass transition temperature (Tg) of at least 57° C., said sulfopolyester comprising: (i) residues of one or more
1. A woven article comprising at least one multicomponent fiber having a shaped cross section, wherein said multicomponent fiber comprises: A) a water dispersible sulfopolyester having a glass transition temperature (Tg) of at least 57° C., said sulfopolyester comprising: (i) residues of one or more dicarboxylic acids;(ii) about 4 to about 40 mole %, based on the total repeating units, of residues of at least one sulfomonomer having 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;(iii) one or more diol residues wherein at least 25 mole %, based on the total diol residues, is a poly(ethylene glycol) having a structure H—(OCH2—CH2)n—OHwherein n is an integer in the range of 2 to about 500; and (iv) 0 to about 25 mole %, based on the total repeating units, of residues of a branching monomer having 3 or more functional groups wherein said functional groups are hydroxyl, carboxyl, or a combination thereof; andB) one or more water non-dispersible polymers immiscible with said sulfopolyester;wherein said multicomponent fiber comprises a plurality of segments comprising said water non-dispersible polymers immiscible with said sulfopolyester, wherein said segments are substantially isolated from each other by said sulfopolyester intervening between said segments. 2. The woven article according to claim 1 wherein said shaped cross section is an islands-in-the-sea, segmented pie, side by side or sheath-core configuration. 3. The woven article according to claim 2 wherein said sulfopolyester forms the sheath component of said sheath-core configuration. 4. The woven article according to claim 1 wherein said fiber contains less than 8 weight percent of a pigment or filler, based on the total weight of said fiber. 5. The woven article according to claim 1 in which said dicarboxylic acids are selected from aliphatic diacids, cycloaliphatic dicarboxylic acids, aromatic dicarboxylic acids, and combinations thereof. 6. The woven article according to claim 1 in which said dicarboxylic acids are selected from succinic, glutaric, adipic, azelaic, sebacic, fumaric, maleic, itaconic, 1,3-cyclohexane dicarboxylic, 1,4-cyclohexanedicarboxylic, diglycolic, 2,5-norbornanedicarboxylic, 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. 7. The woven article according to claim 1 in which said sulfomonomer is a metal sulfonate salt of a sulfophthalic acid, sulfoterephthalic acid, sulfoisophthalic acid, or combinations thereof. 8. The woven article according to claim 1 in which said diol residues are selected from 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-cyclohexane-dimethanol, 2,2,4,4-tetramethyl-1,3-cyclobutanediol, p-xylylenediol, and combinations thereof. 9. The woven article according to claim 1 in which said branching monomer is 1,1,1-trimethylol propane, 1,1,1-trimethylolethane, glycerin, pentaerythritol, erythritol, threitol, dipentaerythritol, sorbitol, trimellitic anhydride, pyromellitic dianhydride, dimethylol propionic acid, or combinations thereof. 10. The woven article according to claim 1 wherein said water non-dispersible polymers are selected from polyolefins, polyesters, polyamides, polylactides, polycaprolactone, polycarbonate, polyurethane, polyvinyl chloride, and combinations thereof. 11. The woven article 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. 12. The woven article according to claim 1 wherein said water non-dispersible polymer is an aliphatic-aromatic polyester. 13. A woven article comprising at least one multicomponent fiber, wherein said multicomponent fiber comprises: A) a water dispersible sulfopolyester having a glass transition temperature (Tg) of at least 57° C., said sulfopolyester comprising: (i) about 50 to about 96 mole % of one or more residues of isophthalic acid or terephthalic acid, based on the total acid residues;(ii) about 4 to about 30 mole %, based on the total acid residues, of a residue of sodiosulfoisophthalic acid;(iii) one or more diol residues wherein at least 25 mole %, based on the total diol residues, is a poly(ethylene glycol) having a structure H—(OCH2—CH2)n—OHwherein n is an integer in the range of 2 to about 500; (iv) 0 to about 20 mole %, based on the total repeating units, of residues of a branching monomer having 3 or more functional groups wherein said functional groups are hydroxyl, carboxyl, or a combination thereof; andB) one or more water non-dispersible polymers immiscible with said sulfopolyester;wherein said multicomponent fiber comprises a plurality of segments comprising said water non-dispersible polymers immiscible with said sulfopolyester, wherein said segments are substantially isolated from each other by said sulfopolyester intervening between said segments. 14. The woven article according to claim 13 wherein said fiber contains less than 8 weight percent of a pigment or filler, based on the total weight of said fiber. 15. The woven article according to claim 13 in which said one or more residues of isophthalic acid or terephthalic acid are present in said sulfopolyester in an amount in the range of about 75 to about 96 mole %, based on the total acid residues, and said one or more diol residues comprise about 22 to about 95 mole % of a residue of diethylene glycol. 16. The woven article according to claim 13 wherein said water non-dispersible polymers are selected from polyolefins, polyesters, polyamides, polylactides, polycaprolactone, polycarbonate, polyurethane, polyvinyl chloride, and combinations thereof. 17. The woven article according to claim 13 wherein said water non-dispersible polymer is biodistintegratable as determined by DIN Standard 54900 or biodegradable as determined by ASTM Standard Method D6340-98. 18. The woven article according to claim 13 wherein said water non-dispersible polymer is an aliphatic-aromatic polyester. 19. The woven article according to claim 13 in which said article is a garment. 20. The woven article according to claim 13 in which said article comprises one or more layers of fibers. 21. The woven article according to claim 1 wherein said residues of one or more dicarboxylic acids comprise residues of terephthalic acid. 22. The woven article according to claim 21 wherein said residues of one or more dicarboxylic acids comprise residues of isophthalic acid. 23. The woven article according to claim 21 wherein said residues of one or more dicarboxylic acids comprises about 50 to about 96 mole % of residues of terephthalic acid, based on the total acid residues. 24. The woven article according to claim 23 wherein said residues of one or more dicarboxylic acids comprise residues of isophthalic acid. 25. The woven article according to claim 1 wherein said sulfopolyester comprises not more than about 15 mole %, based on the total repeating units, of said residues of at least one sulfomonomer. 26. The woven article according to claim 1 wherein said sulfopolyester comprises not more than about 10 mole %, based on the total repeating units, of said residues of at least one sulfomonomer. 27. The woven article according to claim 1 wherein said one or more diol residues comprise ethylene glycol and diethylene glycol. 28. The woven article according to claim 27 wherein said one or more diol residues comprise about 10 to about 75 mole % of ethylene glycol and about 25 to about 95 mole % of diethylene glycol, based on the total diol residues. 29. The woven article according to claim 1 wherein said residues of one or more dicarboxylic acids comprise residues of isophthalic acid and residues of terephthalic acid, wherein said one or more diol residues comprise ethylene glycol residues and diethylene glycol residues. 30. The woven article according to claim 29 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 one or more diol residues comprise at least about 10 mole % of ethylene glycol residues, based on the total diol residues. 31. The woven article according to claim 30 wherein said one or more diol residues comprise at least about 40 mole % of ethylene glycol residues, based on the total diol residues, wherein said residues of at least one sulfomonomer are present in said sulfopolyester in an amount of not more than about 10 mole %, based on the total repeating units. 32. The woven article according to claim 1 wherein said sulfopolyester has a Tg of at least 60° C. 33. The woven article according to claim 1 wherein said sulfopolyester has a Tg of at least 65° C. 34. The woven article according to claim 1 wherein said sulfopolyester has a Tg of at least 60° C. to about 75° C.
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