Patents by Inventor Bernard Botannet

Bernard Botannet 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).

  • N-sulfomethylglycinate, use in the preparation of herbicides of the glyphosate type
    Patent number: 5187292
    Abstract: The invention relates to an N-sulfomethylglycinate of formula:HO.sub.3 S--CH.sub.2 --NH--CH.sub.2 --COOR.sub.1 (I)COOR.sub.1 being a hydrolysable carboxylic ester group.It also relates to a process for the preparation of the compound of formula (I) consisting in putting in contact sulfur dioxide, formaldehyde, and glycine in the presence of a R.sub.1 OH alcohol, or glycinate.It also relates to the use of the compound of formula (I) for the preparation of herbicides of the glyphosate type of reaction with a phosphite or a phosphonate of formula (R.sub.2 O).sub.2 P (O) H in which (R.sub.2 O).sub.2 P is a hydrolysable phosphonic ester group, then optionally by a subsequent hydrolysis reaction.
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: February 16, 1993
    Assignee: Rhone-Poulenc Agrochimie
    Inventors: Bernard Botannet, Jean-Louis Clavel, Jean-Pierre Corbet, Michel Mulhauser
  • Process for the preparation of N-sulfomethylglycinate
    Patent number: 5117043
    Abstract: The invention relates to an N-sulfomethylglycinate of formula:HO.sub.3 S--CH.sub.2 --NH--CH.sub.2 --COOR.sub.1 (I)COOR.sub.1 being a hydrolysable carboxylic ester group.It also relates to a process for the preparation of the compound of formula (I) consisting in putting in contact sulfur dioxide, formaldehyde, and glycine in the presence of a R.sub.1 OH alcohol, or glycinate.It also relates to the use of the compound of formula (I) for the preparation of herbicides of the glyphosate type of reaction with a phosphite or a phosphonate of formula (R.sub.2 O).sub.2 P(O) H in which (R.sub.2 O).sub.2 P is a hydrolysable phosphonic ester group, then optionally by a subsequent hydrolysis reaction.
    Type: Grant
    Filed: August 1, 1989
    Date of Patent: May 26, 1992
    Assignee: Rhone-Poulenc Agrochimie
    Inventors: Bernard Botannet, Jean-Louis Clavel, Jean-Pierre Corbet, Michel Mulhauser
  • Process for the preparation of aromatic ethers
    Patent number: 5013855
    Abstract: A process for the preparation of an aromatic ether of general formula: ##STR1## by the action of 3-chloro-1,2-propanediol sulfate on a phenol of general formula:Ar--OHin the presence of an inorganic base.Use of a product obtained according to the process for the preparation of adrenergic .beta.-blockers.
    Type: Grant
    Filed: May 22, 1990
    Date of Patent: May 7, 1991
    Assignee: Rhone-Poulenc Sante
    Inventors: Bernard Botannet, Isidore Le Fur, Viviane Massonneau, Michel Mulhauser
  • Preparation of aromatic azoamines by diazotization/coupling/rearrangement of aromatic amines
    Patent number: 4275003
    Abstract: Aromatic azoamines are prepared by diazotizing an aromatic amine, coupling the diazonium salt with the aromatic amine, and rearranging the resulting aromatic diazoamine. The several reactions are effected in single stage by introducing vaporous nitrogen oxides to a reaction medium essentially consisting of the aromatic amine [.alpha.], a salt of the aromatic amine [.beta.], and water [.gamma.], with the percentage weight relationship existing among the components .alpha., .beta. and .gamma. being such that:10<.alpha.<7013<.beta.5<.gamma..alpha.+.beta.+.gamma.
    Type: Grant
    Filed: February 9, 1978
    Date of Patent: June 23, 1981
    Assignee: Rhone-Poulenc Industries
    Inventors: Serge Ratton, Bernard Botannet