| abstract |
[Object] To provide a biodegradable resin composition that exhibits excellent antistatic properties and antifogging properties while maintaining its molecular weight to such a degree as to provide practically satisfactory strength of a molded article molded even according to a kneading process. n n[Solving Means] A biodegradable resin composition includes a surfactant represented by following Formula (A) and at least one compatibilizer in a ratio of the former to the latter of 90:10 to 10:90 (percent by weight), in which the at least one compatibilizer is selected from reaction products between boric acid and at least one selected from the group consisting of monohydric alcohols, alkylphenols, and polyhydric alcohols such as glycerol, diglycerol, polyglycerols, ethylene glycol, propylene glycol, sorbitol, sorbitan, pentaerythritol, trimethylolpropane and sucrose (hereinafter these are referred to as “alcohols (b)”); reaction products between boric acid and fatty acid esters derived from the alcohols (b) and fatty acids; reaction products between boric acid and alkylene oxide adducts of the alcohols (b); and reaction products between boric acid and fatty acid esters derived from fatty acids and alkylene oxide adducts of the alcohols (b): n n nwherein R 1 , R 2 , R 3 , and R 4 are the same as or different from one another and each represent a straight- or branched-chain alkyl group, alkenyl group, hydroxyalkyl group, alkylaryl group, arylalkyl group, each of which has one to thirty carbon atoms, and -(A 1 O) f R a group, wherein A 1 represents an alkylene group having two to four carbon atoms; “f” denotes 1 to 50; and R a represents a straight- or branched-chain alkyl group, alkenyl group, hydroxyalkyl group, and alkylaryl group, each of which has one to thirty carbon atoms, etc.; n X 1 represents a structure having at least one SO 3 − group and at least one COOR 7 group; and “m” denotes an integer of 1 or more. |