Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1995-06-07
1996-10-29
Barts, Samuel
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
C07C 6934
Patent
active
055697798
ABSTRACT:
Compound mixtures varying from liquids to solids can be prepared via a Michael reaction so that (1) their molecules correspond to the formula Z--C(E)E').sub.p --Q.sub.s wherein Z is alkyl, cycloalkyl, or --(CTT'--CT"G).sub.w --CTT'--CHT"G; Q is --(CTT'--CT"G).sub.t --CTT'--CHT"G; T, T', and T" are independently selected from hydrogen, G', and hydrocarbyl or predominantly hydrocarbyl organic groups containing up to 10 carbons, with the proviso that at least one of T, T', and T" must be hydrogen; E, E', G, and G' are independently selected from --COOR, --C(O)R', and --CN electron withdrawing groups in which R and R' represent alkyl or cycloalkyl groups of up to 10 carbons; p is zero or one; s is respectively two or one; and each of t and w represents zero or a positive integer and (2) at least 25% of the molecules contain at least three G groups. Among the more preferred products are the ester oils in which the esterifying groups contain 1-10 carbons and which have viscosities such as to make them suitable for use as lubricants.
REFERENCES:
patent: 2396626 (1946-03-01), Wiest et al.
patent: 4795787 (1989-01-01), Walz
Skarzewski, "The Michael Reaction of Methanetricarboxylic Esters. A Simple method for Two-Carbon Chain Elongation", Synthesis, Dec. 1990, pp. 1125-1127.
Search Report, CA83(4):3032Aq (Lorenz et al., DE 2342539, Mar. 1975).
Derwent Database: -85-143009 (Denki Kagaku, JP 60-076504 (May 1975).
Hurst Matthew L.
Sabahi Mahmood
Albemarle Corporation
Barts Samuel
Pippenger Philip M.
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