Stearic acid beads

Example 1

Quintone R100 (available from Zeon Corporation, C5 petroleum resin, weight average molecular weight: 2,250, softening point: 96° C.) as a dispersing polymer (B), the modified cellulose fiber A-1, stearic acid (stearic acid beads “Tsubaki” available from NOF Corporation) as a lubricant, and AO-60 (available from Adeka Corporation, phenolic antioxidant) as an antioxidant were introduced into a twin-screw kneader (“KZW” available from Technovel Corporation, screw diameter: 15 mm, L/D: 45) according to the proportions shown in Table 1 below, followed by melt-kneading to give a modified cellulose fiber-containing resin composition C-1.

Example 2

A modified cellulose fiber-containing resin composition C-2 was prepared as in Preparation Example 1, except that Petcoal LX (available from Tosoh Corporation, C9 petroleum resin, weight average molecular weight: 1,400, softening point: 98° C.) was used as the dispersing polymer (B).

Example 4

A modified cellulose fiber-containing resin composition C-4 was prepared as in Preparation Example 1, except that no dispersing polymer (B) was used and the other materials were compounded according to the proportions shown in Table 1 below.

Example 1

Quintone R100 (available from Zeon Corporation, C5 petroleum resin, weight average molecular weight: 2,250, softening point: 96° C.) as a dispersing polymer (B), the modified cellulose fiber A-1, stearic acid (stearic acid beads “Tsubaki” available from NOF Corporation) as a lubricant, and AO-60 (available from Adeka Corporation, phenolic antioxidant) as an antioxidant were used and introduced into a twin-screw kneader (“KZW” available from Technovel Corporation, screw diameter: 15 mm, L/D: 45) according to the proportions shown in Table 1 below, followed by melt-kneading to give a modified cellulose fiber-containing resin composition X-1.

Example 2

A modified cellulose fiber-containing resin composition X-2 was prepared in the same manner as in Preparation Example 1, except that Petcoal LX (available from Tosoh Corporation, C9 petroleum resin, weight average molecular weight: 1,400, softening point: 98° C.) was used as a dispersing polymer (B).

Example 4

A modified cellulose fiber-containing resin composition X-4 was prepared in the same manner as in Preparation Example 1, except that the materials were compounded according to the proportions shown in Table 1 below without using any dispersing polymer (B).

Example 3

Petcoal LX (available from Tosoh Corporation, C9 petroleum resin, weight average molecular weight: 1,400, softening point: 98° C.) and the acid anhydride group-containing petroleum resin a-1 (acid value: 98, softening point: 96° C., weight average molecular weight: 5,800) as dispersing polymers (B), the modified cellulose fiber A-2, stearic acid (stearic acid beads “Tsubaki” available from NOF Corporation) as a lubricant, and AO-60 (available from Adeka Corporation, phenolic antioxidant) as an antioxidant were used and introduced into a twin-screw kneader (“KZW” available from Technovel Corporation, screw diameter: 15 mm, L/D: 45) according to the proportions shown in Table 1 below, followed by melt-kneading to give a modified cellulose fiber-containing resin composition X-3.