Method for decomposition of Michael type adduct

Details Method for decomposition of Michael type adduct Method for decomposition of Michael type adduct

2005-03-22

2005-03-22

Tsang, Cecilia J. (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C560S205000, C560S224000, C560S260000, C562S598000, C562S599000

Reexamination Certificate

active

06870066

ABSTRACT:
A method for the decomposition of a Michael type adduct of an acrylic acid and/or an acrylic ester represented by the following formula [I] or [II] is disclosed, wherein decomposing the Michael type 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.in-line-formulae description="In-line Formulae" end="lead"?CH2═CHCOO(—X—COO)n—R1  [I]in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?R2—O(—X—COO)m—R3  [II]in-line-formulae description="In-line Formulae" end="tail"?(wherein n and m denote an integer in the range of 1-5, R1, R2, and R3independently denote a hydrogen atom or an alkyl group, and —X— denotes —CH2CH2— or —CH(CH3)—, and —X— may be identical or different when n is 2 or more).

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