| 摘要 |
Polyalkylpiperidinesulfonic acid esters of the formulae I and II B-X-O-SO2-A)m (I) (B'-X-O-SO2)2A'(II), in which A, A', B, B', X and m are as defined in claim 1, the polyalkylpiperidine group being present in each of the substituents B and B'. These esters are suitable for use as curing catalysts for acid-curable resins and act therein, at the same time, as light stabilizers. |
