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Method for producing (meth)acrylic acid esters

  • US 7,026,503 B2
  • Filed: 05/28/2002
  • Issued: 04/11/2006
  • Est. Priority Date: 06/08/2001
  • Status: Expired due to Term
First Claim
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1. A process for the preparation of higher (meth)acrylates by transesterification of a lower (meth)acrylate with a higher alcohol R2OH which either carries, as R2, C2

  • C12-alkyl radical having at least one NR32 group in which R3 is C1

    C6-alkyl and N may also be a member of a five- to seven-membered ring or is R32N(—

    CH2CH2

    O)y-H, R32N(—

    CH(CH3)—

    CH—

    O)y

    H or R32N(—

    CH2CH(CH3)—

    O)y

    H, where y is an integer from 1 to 4, in the presence of a stabilizer or stabilizer mixture and of a catalyst or catalyst mixture, wherein the liberated lower alkanol R1OH, where R1 contains at least 1 carbon atom less than R2, is separated off and is fed at least partly to the preparation of a lower (meth)acrylate without further purification.

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