Fibrous sorbing materials and preparations thereof

Claim 1

A method of preparing a manganese oxide coated acrylic fiber which comprises: immersing acrylic fiber in a solution of an alkali metal base at a concentration from about 4N to about 7N at a temperature from about 80°C to about 110°C until the fiber obtains an orange-red color; removing said fiber from said solution; removing excess solution from said fiber; immersing said fiber in a solution of a Mn + 2 with a pH from 1 to 2 at a concentration from about 60% to 100% saturation at a temperature from about 30°C to about 40°C until the fiber is saturated; removing said fiber from said solution; removing excess solution from said fiber; immersing said fiber in a solution of an alkali metal base at a concentration from about 3N to about 7N at a temperature from about 20°C to about 70°C; removing said fiber from solution; removing excess solution from said fiber; and exposing said fiber to air until a blackish color is obtained.

Claim 2

A method of preparing a manganese oxide coated acrylic fiber which comprises: immersing acrylic fiber in a solution of an alkali metal base at a concentration from about 4N to about 7N at a temperature from about 80°C to about 110°C until the fiber obtains an orange-red color; removing said fiber from said solution; removing excess solution from said fiber; immersing said fiber in a solution of a Mn + 2 with a pH from 1 to 2 at a concentration from about 60% to 100% saturation at a temperature from about 30°C to about 40°C until the fiber is saturated; removing said fiber from said solution; removing excess solution from said fiber; immersing said fiber in a solution of an alkali metal base at a concentration from about 3N to about 7N at a temperature from about 20°C to about 70°C; removing said fiber from solution; removing excess solution from said fiber; and exposing said fiber to air until a blackish color is obtained.

Claim 3

A method of preparing a manganese oxide coated acrylic fiber which comprises: immersing acrylic fiber in a solution of NaOH solution at a concentration from 5N to 6N at a temperature from 80°C to 90°C until the fiber obtains an orange-red color; removing said fiber from said solution; removing excess solution from said fiber; immersing said fiber in a solution of manganese chloride with a pH from 1 to 2 at a concentration from 75% to 90% saturation at a temperature from 30°C to 40°C until the fiber is saturated; removing said fiber from said solution; removing excess solution from said fiber; immersing said fiber in a NaOH solution at a concentration from 5.5N to 6.5N at a temperature from 25°C to 30°C; removing said fiber from said solution; removing excess solution from said fiber; and exposing said fiber to air until a blackish color is obtained.

Claim 4

A method of preparing a manganese oxide coated acrylic fiber which comprises: immersing acrylic fiber in a solution of NaOH solution at a concentration from 5N to 6N at a temperature from 80°C to 90°C until the fiber obtains an orange-red color; removing said fiber from said solution; removing excess solution from said fiber; immersing said fiber in a solution of manganese chloride with a pH from 1 to 2 at a concentration from 75% to 90% saturation at a temperature from 30°C to 40°C until the fiber is saturated; removing said fiber from said solution; removing excess solution from said fiber; immersing said fiber in a NaOH solution at a concentration from 5.5N to 6.5N at a temperature from 25°C to 30°C; removing said fiber from said solution; removing excess solution from said fiber; and exposing said fiber to air until a blackish color is obtained.