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:
Aug. 08, 1978
Filed:
Nov. 14, 1975
Pierre Sigwalt, St. Michel-sur-Orge, FR;
Alain Polton, Paris, FR;
Cecile Baudin, Kremlin Bicetre, FR;
Mihajlo (Michel) Miskovic, Paris, FR;
Agence Nationale de Valorisation de la Recherche (ANVAR), Neuilly-sur-Seine, FR;
Abstract
Elastomers with thermoplastic properties consist of polymers grafted on an elastomeric chain which includes double bonds and active sites. The latter are more particularly halogen atoms, especially chlorine, and the grafted polymer is a polyindene or a copolymer of indene with styrene derivatives, such as .alpha.-methylstyrene or para-alkyl-styrene. In the process for preparing these thermoplastic elastomers the choice of constituent proportions, catalyst and solvent is important. Elastomers possessing at 80.degree. C. a breaking strength of at least 60 kg/cm.sup.2 can be obtained.