Method for drying absorbent modified cellulosic polymers and the

Details Method for drying absorbent modified cellulosic polymers and the Method for drying absorbent modified cellulosic polymers and the

1980-08-13

1981-10-13

Marquis, Melvyn I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

106169, 106186, 106188, 106189, 260 174GC, 260 174ST, 536 32, 536 43, 536 48, 536 50, 536 59, 536 61, 536 62, 536 66, 536 87, 536 97, 536101, 536108, 536109, 536110, 536 89, 536 91, 106210, 106213, C08L 100

Patent

active

042947316

ABSTRACT:
A method for oven drying chemically modified cellulosic materials, especially fibers, having improved fluid absorbency involves incorporating into the cellulose structure while swollen an amphiphilic compound miscible with water which will not evaporate when the fiber is oven dried and will remain in the fiber to prevent collapse of the fiber as the water is removed. The improved method of drying the fibrous cellulosic material produces a product having saline absorbency about equal to that produced when the fibers are dried with a water-miscible solvent and avoids the use of volatile solvents and the disadvantages inherent therewith. The fibers provided by the invention are especially suitable for use in pads which are to be used for absorbing water and body fluids.

REFERENCES:
patent: 3256372 (1966-06-01), Adams et al.
patent: 3376285 (1968-04-01), Callihan et al.
patent: 3489719 (1970-01-01), Savage et al.
patent: 3505257 (1970-04-01), Conte et al.
patent: 3589364 (1971-06-01), Dean et al.
patent: 3658790 (1972-04-01), Bernardin
patent: 3691154 (1972-09-01), Bernardin
patent: 3907499 (1975-09-01), Ingram et al.
patent: 3997647 (1976-12-01), Lassen

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