Patents by Inventor Andr e Levray

Andr e Levray has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the preparation of alkylimidazolidone (meth) acrylates
    Patent number: 5610313
    Abstract: A compound (I) is prepared by reacting at least one (meth)acrylate (II) with a heterocyclic alcohol (III), in the presence of a catalyst consisting of a mixture formed (a) of at least one magnesium alkoxide and (b) of a component chosen from the chelates of calcium with 1,3-dicarbonyl compounds, dialkyltin oxides, dialkyltin alkoxides and dialkyltin diesters. ##STR1## R=C.sub.1 -C.sub.4 alkyl. R.sup.1 =H, CH.sub.3 ; A, B=straight or branched C.sub.2 -C.sub.5 hydrocarbon chain; R.sup.2 =C.sub.1 -C.sub.4 alkyl.
    Type: Grant
    Filed: November 17, 1995
    Date of Patent: March 11, 1997
    Assignee: ELF Atochem S.A.
    Inventors: Alain Riondel, Gilles Herbst, Andr e Levray