Patents by Inventor Serge Chassaing

Serge Chassaing 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).

  • .beta.-diketones, processes for making .beta.-diketones and use of .beta.-diketones as stabilizers for PVC
    Patent number: 5808165
    Abstract: The present invention is directed to compositions containing novel beta-diketones of formula (I) and formula (II),R.sub.1 COCH.sub.2 COR.sub.2 (I)R.sub.2 COCH.sub.2 COR.sub.2 (II)which may be used to stabilize various polymers, such as polyvinyl chlorides (PVCs). The present invention is also directed to a method for preparing .beta.-diketones by a Claisen condensation reaction, which is represented as follows:R.sub.4 COCHR.sub.5 H+R.sub.6 C(O)OR.sub.7 +RO.sup.- .fwdarw.?R.sub.4 COCR.sub.5 COR.sub.6 !-+R.sub.7 OH+ROH.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: September 15, 1998
    Assignee: Rhone-Poulenc Chimie
    Inventors: Serge Chassaing, Michel Gay, Gilles Mur
  • Stabilizing composition for chlorine-containing polymer comprising .beta.-diketones
    Patent number: 5672646
    Abstract: The present invention relates to a stabilizing composition for a chlorine-containing polymer (PVC), characterized in that it comprises the unpurified crude product resulting from the reaction of an ester with a ketone in the presence of an alkaline agent, this crude product comprising at least 10 % by weight of .beta.-diketone and being in the form of a powder.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: September 30, 1997
    Assignee: Rhone-Poulenc Chimie
    Inventors: Michel Allas, Serge Chassaing, Michel Gay, Gilles Mur
  • .beta.-diketones, processes for making .beta.-diketones and use of .beta.-diketones as stabilizers for PVC
    Patent number: 5475145
    Abstract: The present invention is directed to compositions containing novel beta-diketones of formula (I) and formula (II),R.sub.1 COCH.sub.2 COR.sub.2 (I)R.sub.2 COCH.sub.2 COR.sub.2 (II)which may be used to stabilize various polymers, such as polyvinyl chlorides (PVCs). The present invention is also directed to a method for preparing .beta.-diketones by a Claisen condensation reaction, which is represented as follows:R.sub.4 COCHR.sub.5 H+R.sub.6 C(O)OR.sub.7 +RO.sup.- .fwdarw.[R.sub.4 COCR.sub.5 COR.sub.6 ]--+R.sub.7 OH+ROH.
    Type: Grant
    Filed: November 5, 1993
    Date of Patent: December 12, 1995
    Assignee: Rhone-Poulenc
    Inventors: Serge Chassaing, Michel Gay, Gilles Mur