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US4022740A Expired / Lapsed US ⏱️ 0.0 years remaining

Water and glycol bonding dispersions for synthetic fibers

Assignee: Eastman Kodak Co
•
Filing: 1975-04-30
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Granted: 1977-05-10
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Expires: 1995-04-30
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Abstract

Abstract Water and glycol bonding dispersion comprising water, high boiling glycols selected from 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,2-butanediol and 1,3-butanediol; and water and glycol dispersible polyester polymers. The polymer is present in the amount of about 5 to 40% by weight of the dispersion and preferably about 15 to 35% by weight, and is selected from polyesters of combinations of isophthalic acid and the sodium, potassium, or lithium salt of sulfoisophthalic acid reacted with diethylene glycol or triethylene glycol; and from terephthalic acid and the sodium, potassium or lithium salt of sulfoisophthalic acid reacted with diethylene glycol or triethylene glycol. The water and selected glycol(s) serve as a carrier or dispersion medium for the selected water and glycol dispersible polymer. The dispersions contain from about 0.1-20% water by weight. Also disclosed are tobacco smoke filter rods of cellulose acetate fibers, poly(hexamethylene adipamide) fibers and of poly(ethylene terephthalate) fibers bonded with the bonding dispersion.

Inventors

  • 👤 Gerald P. Morie
  • 👤 Cephas H. Sloan

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 17:47
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/507; A; A24; A24D; A24D3/00; A24D3/06; A24D3/08; C; C08; C08G; C08G63/00; C08G63/68; C08G63/688; C08G63/6884; C08G63/6886; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/3179

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 124 words
A water and glycol bonding dispersion, the bonding dispersion being non-tacky and being effective for forming a bond between fibers with the bond being dispersible by water, the bonding dispersion comprising water present in the amount of about 0.1-20% by weight and at least one high boiling glycol present in the amount of about 40-94.9% by weight selected from 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,2-butanediol, and 1,3-butanediol; and water and glycol dispersible polymers present in the amount of about 5-40% by weight selected from polyesters of combinations of isophthalic acid, and the sodium, potassium, or lithium salt of sulfoisophthalic acid reacted with diethylene glycol or triethylene glycol; from terephthalic acid and the sodium, potassium or lithium salt of sulfoisophthalic acid reacted with diethylene glycol or triethyleneglycol.
Claim 2
Dependent Claim 124 words
A water and glycol bonding dispersion, the bonding dispersion being non-tacky and being effective for forming a bond between fibers with the bond being dispersible by water, the bonding dispersion comprising water present in the amount of about 0.1-20% by weight and at least one high boiling glycol present in the amount of about 40-94.9% by weight selected from 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, 1,2-butanediol, and 1,3-butanediol; and water and glycol dispersible polymers present in the amount of about 5-40% by weight selected from polyesters of combinations of isophthalic acid, and the sodium, potassium, or lithium salt of sulfoisophthalic acid reacted with diethylene glycol or triethylene glycol; from terephthalic acid and the sodium, potassium or lithium salt of sulfoisophthalic acid reacted with diethylene glycol or triethyleneglycol.
Claim 3
Dependent Claim 17 words
Bonding dispersion of claim 1 wherein said polymer is present in an amount of 15-35% by weight.
Claim 4
Dependent Claim 14 words
Bonding dispersion of claim 1 wherein said dispersion contains about 5% water by weight.
Claim 5
Dependent Claim 41 words
Bonding dispersion of claim 1 wherein said polymer is a copolyester containing about 5 to 15 mole percent of the sodium, potassium or lithium salt of sulfoisophthalic acid, 95 to 85 mole percent isophthalic acid and 100 mole percent diethylene glycol.
Claim 6
Dependent Claim 33 words
Bonding dispersion of claim 1 wherein said is a copolyester containing about 10 mole percent of the sodium salt of sulfoisophthalic acid, 90 mole percent isophthalic acid and 100 mole percent diethylene glycol.
Claim 7
Dependent Claim 35 words
Bonding dispersion of claim 1 wherein said glycol is propylene glycol and said polymer is a copolyester composed of 90 mole percent isophthalic acid; 10 mole percent sodiosulfoisophthalic acid and 100 mole percent diethylene glycol.
Claim 8
Dependent Claim 18 words
Bonding dispersion of claim 1 wherein said polymer is present in the amount of about 25% by weight.
Claim 9
Dependent Claim 23 words
Bonding dispersion of claim 7 wherein said high boiling glycol is present in the amount of about 68-73% by weight of the dispersion.

References Cited (Backward Citations)

US3660329A Cited
US3734874A Cited
US3779993A Cited
US3712873A Cited
US3795650A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-05-09 1980-11-08 1981-05-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-05-09 1984-11-08 1985-05-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-05-09 1988-11-08 1989-05-10 $7700.00 Window Closed / Lapsed

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