• Patent Title: Aminoalkyl (meth)acrylate stabilisation
  • Application No.: US17283272
    Application Date: 2019-09-18
  • Publication No.: US11485702B2
    Publication Date: 2022-11-01
  • Inventor: Clement BelliniYves CabonPatrice Defer
  • Applicant: Arkema France
  • Applicant Address: FR Colombes
  • Assignee: Arkema France
  • Current Assignee: Arkema France
  • Current Assignee Address: FR Colombes
  • Agent Lynn B. Morreale
  • Priority: FR1859127 20181002
  • International Application: PCT/FR2019/052173 WO 20190918
  • International Announcement: WO2020/070403 WO 20200409
  • Main IPC: C07C213/10
  • IPC: C07C213/10 C07C213/06
Aminoalkyl (meth)acrylate stabilisation
Abstract:
The present invention relates to the use of a stabilizing composition comprising at least one N-oxyl compound and at least one polymerization inhibitor other than an N-oxyl compound, for inhibiting transesterification catalyst degradation in a process for the synthesis of aminoalkyl (meth)acrylates. Preferably, the transesterification catalyst is a titanium organometallic compound and the stabilising composition comprises at least one N-oxyl derivative and at least one polymerization inhibitor chosen from phenolic compounds and phenothiazine compounds in a weight ratio of between 1 and 10, preferably between 4 and 10, limits inclusive.
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