Claims
- 1. An air and water vapor permeable, toxic vapor absorptive, non-woven fabric material consisting essentially of a wet-laid sheet containing fibrillated acrylic fiber and activated carbon fiber wherein the concentration of fibrillated acrylic fiber ranges from about 5-60%, by weight, based on the total weight of fibrillated acrylic fiber and activated carbon fiber and the concentration of said activated carbon fiber ranges from about 40%-95%, by weight, same basis.
- 2. The fabric material of claim 1, wherein the surface area of the activated carbon fiber, as measured by BET determination, is greater than about 500 M.sup.2 /gm.
- 3. The fabric material of claim 1, wherein the surface area of the activated carbon fiber, as measured by BET determination, is greater than about 1,000 M.sup.2 /gm.
- 4. The fabric material of claim 1, wherein the distribution of fibers having a diameter below about 1 micron does not exceed about 15% by weight of the total activated carbon fiber content, and the distribution of activated carbon fibers having a diameter above about 100 microns does not exceed about 15% by weight, same basis.
Parent Case Info
This is a division of application Ser. No. 725,527 filed Apr. 23, 1985, and now Pat. No. 4,565,727, which in turn is a continuation-in-part of application Ser. No. 531,366, filed Sept. 26, 1984, and now abandoned.
US Referenced Citations (4)
Number |
Name |
Date |
Kind |
3826712 |
Masuda et al. |
Jul 1974 |
|
4289513 |
Brownhill et al. |
Sep 1981 |
|
4495030 |
Giglia |
Jan 1985 |
|
4565727 |
Giglia et al. |
Jan 1986 |
|
Foreign Referenced Citations (2)
Number |
Date |
Country |
1409701 |
Jul 1965 |
FRX |
1162110 |
Aug 1969 |
GBX |
Non-Patent Literature Citations (4)
Entry |
Diaconescu et al., Cellulose Chemistry and Technology, 18, 335-341 (1984). |
C.A. 99: 17752 (1983). |
ABIC, 51 (2), 2159, (1980). |
ABIC, 54 (6), 6784, (1983). |
Divisions (1)
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Number |
Date |
Country |
Parent |
725527 |
Apr 1985 |
|
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
531366 |
Sep 1984 |
|