The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 18, 2011
Filed:
Oct. 10, 2003
Eugènie Charriere, Lyons, FR;
Jean-marie Bernard, Mornant, FR;
Denis Revelant, Genas, FR;
Stéphane Randu, Lyons, FR;
Michel Carlo, Lyons, FR;
Eugènie Charriere, Lyons, FR;
Jean-Marie Bernard, Mornant, FR;
Denis Revelant, Genas, FR;
Stéphane Randu, Lyons, FR;
Michel Carlo, Lyons, FR;
Rhodia Chimie, Courbevoie Cedex, FR;
Abstract
A low viscosity polyisocyanate composition containing at least one isocyanate dimer having a uretidinedione unit is prepared from a reaction medium containing at least one isocyanate monomer in which the isocyanate groups are borne by spcarbon atoms. The reaction medium is heated, in the absence of a dimerization catalyst, to a temperature of at least 50° C. and not more than 200° C. for a period of not more than 24 hours.