C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
C07F7/24—Lead compounds
C—CHEMISTRY; METALLURGY
C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
C08G18/00—Polymeric products of isocyanates or isothiocyanates
C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
C08G18/08—Processes
C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
Procédé pour améliorer la résistance à l'hydrolyse des élastomères d'uréthanne satures, compositions pour la mise en oeuvre de ce procédé et produits obtenus