Claims
- 1. Tobacco smoke filter rods made with fibers selected from cellulose acetate, poly(ethylene terephthalate) and poly(hexamethylene adipamide) bonded with 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.
- 2. Tobacco smoke filter rods as defined in claim 1 wherein said polymer is present in an amount of 15-35% by weight.
- 3. Tobacco smoke filter rods as defined in claim 1 wherein said dispersion contains about 5% water by weight.
- 4. Tobacco smoke filter rods as defined in 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.
- 5. Tobacco smoke filter rods as defined in claim 1 wherein said polymer 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.
- 6. Tobacco smoke filter rods as defined in 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.
- 7. Tobacco smoke filter rods as defined in claim 6 wherein said polymer is present in the amount of about 25% by weight.
- 8. Tobacco smoke filter rods as defined in claim 7 wherein said high boiling glycol is present in the amount of about 68-73% by weight of the dispersion.
Parent Case Info
This application is a division of our application Ser. No. 573,228, filed Apr. 30, 1975 now U.S. Pat. No. 4,022,740, which is a continuation-in-part of application Ser. No. 498,349, filed Aug. 19, 1974, (now abandoned), which, in turn, was a continuation-in-part of application Ser. No. 411,117, filed Oct. 30, 1973, (now abandoned).
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
3285255 |
Touey et al. |
Nov 1966 |
|
3339560 |
Kiefer et al. |
Sep 1967 |
|
3417759 |
Touey et al. |
Dec 1968 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
573228 |
Apr 1975 |
|
Continuation in Parts (2)
|
Number |
Date |
Country |
Parent |
498349 |
Aug 1974 |
|
Parent |
411117 |
Oct 1973 |
|