Patent ID: 6870066

Claim:
A method for the decomposition of an adduct of an acrylic acid and/or an acrylic ester represented by the following formula [I] or [II], wherein decomposing the adduct in the presence of at least one copper salt and at least one metal salt selected from the group consisting of an alkali metal salt and an alkaline earth metal salt into an acrylic acid and/or an acrylic ester and/or an alcohol used as raw materials in production or a relevant acrylic and/or acrylic ester CH 2 ═CHCOO(—X—COO) n —R 1 [I] wherein n denotes an integer in the range of 1-5, R 1 denotes a hydrogen ato or an alkyl group, and —X— denotes —CH 2 CH 2 — or —CH(CH 3 )—, and —X— may be identical or different when n is 2 or more. R 2 —O(—X—COO) m —R 3 [II] wherein m denotes an integer in the range of 1-5, R 2 and R 3 independently denote a hydrogen atom or an alkyl group, and —X— denotes —CH 2 CH 2 — or —CH(CH 3 )—, and —X— may be identical or different when n is 2 or more.