Patents by Inventor Didler Vanhoye

Didler Vanhoye 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).

  • Patent number: 5919840
    Abstract: This organosoluble (meth)acrylic resin composition is characterized in that it includes a polymer containing units derived from methacrylic acid which are esterified with --Ti(OR).sub.3 groups, mixed with free Ti(OR).sub.4, which represents the excess of Ti(OR).sub.4 which has been introduced for the preparation of the said polymer in sufficient quantity for the resulting composition to be organosoluble and not in gel form, R representing one of ethyl, isopropyl, n-butyl, t-butyl, 2-ethylhexyl and t-amyl. It may be the product of esterification in a solvent medium of a polymer containing units derived from methacrylic acid with Ti(OR).sub.4, the Ti/COOH molar ratio being higher than 1, preferably being between 3/1 and 10/1; or the product of radical copolymerization in a solvent medium of at least one methacrylic acid esterified with Ti(OR).sub.3 and of at least one comonomer, in the presence of Ti(OR).sub.4, in a quantity which would have corresponded to a reaction between the methacrylic acid and Ti(OR).
    Type: Grant
    Filed: August 21, 1997
    Date of Patent: July 6, 1999
    Assignee: Elf Atochem, S.A.
    Inventors: Didler Vanhoye, Michel Camail, Andre Margaillan, Jean-Louis Vernet, Marie Humbert