Stable herbicide or plant growth regulator formulations, especially emulsifiable concentrates, contain new or known phosphonium or sulfonium salt derivatives of sulfonyl urea compounds

摘要

A new formulation comprises: (a) at least one phosphonium or sulfonium salt (I) of a sulfonyl urea, where the phosphonium or sulfonium cation contains at least one substituent other than H; and (b) conventional auxiliaries and additives. Independent claims are included for: (i) new sulfonylurea salts of formula (I'); Ra = substituted aliphatic, aromatic or heterocyclic residue or an electron withdrawing group such as a substituted sulfonamide group; Rb = heterocyclyl, preferably containing N, especially containing 2 or 3 ring N; R1 = H or 1-10C hydrocarbyl, e.g. 1-6C alkyl; M<+> = quaternary sulfonium or tertiary sulfonium ion; (ii) the use of sulfonium or phosphonium compounds of formula (XVIII) for the preparation of an agrochemical formulation. w, x, y, z = 0-50; R = optionally substituted 8-40C hydrocarbyl; EO = ethoxy unit PO = propoxy unit; M'<+> = sulfonium or phosphonium.