Comparative Example 14

A solid desiccant was prepared in the same manner as in Example 1, except that only 10 g of magnesium chloride and 20 g of calcium oxide were used without calcium chloride upon preparing a mixture.

Comparative Example 15

A solid desiccant was prepared in the same manner as in Example 1, except that only 20 g of magnesium chloride and 20 g of calcium oxide were used without calcium chloride upon preparing a mixture.

Comparative Example 16

A solid desiccant was prepared in the same manner as in Example 1, except that only 40 g of magnesium chloride and 20 g of calcium oxide were used without calcium chloride upon preparing a mixture.

The moisture absorption of Examples 6 to 9 and Comparative Examples 9 to 16 is shown in Table 2 below.

TABLE 2

Calcium
Magnesium

Moisture

chloride
chloride
Calcium
absorption

(g)
(g)
oxide (g)
(%)

Example 6
0.5
4.5
20
254

Example 7
1
9
20
312

Example 8
2
18
20
330

Example 9
4
36
20
368

Comparative
5
0
20
187

Example 9

Comparative
10
0
20
219

Example 10

Comparative
20
0
20
240

Example 11

Comparative
40
0
20
276

Example 12

Comparative
0
5
20
210

Example 13

Comparative
0
10
20
247

Example 14

Comparative
0
20
20
270

Example 15

Comparative
0
40
20
308

Example 16

Comparing Examples 6 to 9 with Comparative Examples 9 to 16, it is seen that when a total amount of calcium chloride and/or magnesium chloride is at the same level, Examples have high moisture absorption.

Preparation of Gel Desiccant

Absorbent polymers were added to calcium chloride and/or magnesium chloride to prepare gel desiccants whose moisture absorption was then determined for each.

Example 10

0.5 g of calcium chloride, 4.5 g of magnesium chloride, and 3 g of CMC were mixed to prepare a mixture, which was then weighed, and then the mixture was placed in a thermo-hygrostat and kept at 50° C. and 90% RH for 120 hours to react with moisture, and then the resulting product was weighed to determine moisture absorption.

Example 11

Moisture absorption was determined in the same manner as in Example 10, except that 1 g of calcium chloride, 9 g of magnesium chloride, and 3 g of CMC were mixed upon preparing a mixture.

Example 12

Moisture absorption was determined in the same manner as in Example 10, except that 2 g of calcium chloride, 18 g of magnesium chloride, and 3 g of CMC were mixed upon preparing a mixture.

Example 13

Moisture absorption was determined in the same manner as in Example 10, except that 4 g of calcium chloride, 36 g of magnesium chloride, and 3 g of CMC were mixed upon preparing a mixture.

Comparative Example 17

Moisture absorption was determined in the same manner as in Example 10, except that 5 g of calcium chloride and 3 g of CMC were mixed upon preparing a mixture.

Comparative Example 18

Moisture absorption was determined in the same manner as in Example 10, except that 10 g of calcium chloride and 3 g of CMC were mixed upon preparing a mixture.

Comparative Example 19

Moisture absorption was determined in the same manner as in Example 10, except that 20 g of calcium chloride and 3 g of CMC were mixed upon preparing a mixture.

Comparative Example 20

Moisture absorption was determined in the same manner as in Example 10, except that 40 g of calcium chloride and 3 g of CMC were mixed upon preparing a mixture.

Comparative Example 21

Moisture absorption was determined in the same manner as in Example 10, except that 5 g of magnesium chloride and 3 g of CMC were mixed upon preparing a mixture.

Comparative Example 22

Moisture absorption was determined in the same manner as in Example 10, except that 10 g of magnesium chloride and 3 g of CMC were mixed upon preparing a mixture.

Comparative Example 23

Moisture absorption was determined in the same manner as in Example 10, except that 20 g of magnesium chloride and 3 g of CMC were mixed upon preparing a mixture.

Comparative Example 24

Moisture absorption was determined in the same manner as in Example 10, except that 40 g of magnesium chloride and 3 g of CMC were mixed upon preparing a mixture.

The moisture absorption of Examples 10 to 13 and Comparative Examples 17 to 24 is shown in Table 3 below.