PROBLEM TO BE SOLVED: To provide an efficacy enhancing agent composition for agricultural chemicals which is easily subjected to preparation and which has excellent wettability (uniform adhesion) and sticking tendency to agricultural chemicals.SOLUTION: The efficacy enhancing agent composition for agricultural chemicals includes (A) a sorbitan fatty acid ester surfactant, (B) a rosin polyoxyalkylene adduct or a quaternary ammonium salt surfactant expressed by formula (B1), and (C) a glycol ether solvent expressed by R5-O-(CH2CH2O)n-H[in the formula, R5 denotes a 1 to 6C straight chain or branched chain alkenyl group or a 2 to 6C straight chain or branched chain alkenyl group and n is 2 or 3]. [In the formula (B1), at least one of R1, R2 and R3 is an 8 to 30C straight chain or branched chain alkyl group or alkenyl group, and the remainder denote methyl group, ethyl group or the like R4 denotes a methyl group or an ethyl group and counter ion X-denotes an anionic group derived from an anionic oligomer or polymer with an average molecular weight of 300 to 20,000].COPYRIGHT: (C)2012,JPO&INPIT【課題】製剤化が容易で、農薬の濡れ性(均一付着性)や固着性に優れた農薬用効力増強剤組成物を提供する。【解決手段】(A)ソルビタン脂肪酸エステル系界面活性剤、(B)ロジンポリオキシアルキレン付加物又は下式(B1)で表される第四級アンモニウム塩系界面活性剤、並びに、(C)R5-O-(CH2CH2O)n-H[式中、R5は炭素数1~6の直鎖又は分岐鎖のアルキル基又は炭素数2~6の直鎖又は分岐鎖のアルケニル基を表し、nは2又は3である。]で表されるグリコールエーテル系溶剤を含有する農薬用効力増強剤組成物。[式中、R1、R2、R3は少なくとも1つが炭素数8~30の直鎖又は分岐鎖のアルキル基又はアルケニル基であり、残りがメチル基、エチル基等を表し、R4はメチル基又はエチル基を表し。対イオンX-は平均分子量が300~2万のアニオン性オリゴマー又はポリマーに由来するアニオン性基を表す。]【選択図】なし
