Patent ID: 7670388

Claim:
A fiber-treating agent composition comprising an oil-in-water emulsion wherein composition (A) comprising the following component (b) is emulsified with the following component (a), component (a): a polymer compound of (iii) a polysaccharide derivative wherein part or all of hydrogen atoms of hydroxy groups of the polysaccharide derivative are substituted by groups represented by the formula (3-1): R 3d -(E 3 ) 3p -(R 3e ) 3q — (3-1) wherein R 3d represents a C8 to C22 linear or branched hydrocarbon group which may be substituted with a hydroxy or oxo group; R 3e represents a C1 to C6 linear or branched alkylene group which may be substituted with a hydroxy or oxo group, the total carbon number of R 3d and R 3e is 8 to 30; and E 3 represents a group selected from —O—, —COO— and —OCO—; and 3p and 3q are independently 0 or 1, and component (b): a polyether-modified silicone having an HLB value of larger than zero to 7 or smaller; wherein the mass ratio of the component (a) to the component (b) in the composition, that is, the component (a)/component (b), is 9/100 to 30/100.