摘要 |
An aldehyde is added in the form of an aldehyde generator chosen from the class consisting of: a) the linear acetals of formula <IMAGE> n is an integer between 0 and 5, or b) the vinyl ethers of formula <IMAGE> The substituents R, R1, R2, R3, R4 and R5 in these formulae have the meanings defined in Claim 1. This aldehyde generator is capable of releasing the desired aldehyde under the conditions of use. |