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:
May. 30, 2000
Filed:
Jan. 22, 1998
Nicolas Garois, Amilly, FR;
Hutchinson, Paris, FR;
Abstract
A thermoplastic and elastomer composite product, in particular a pipe for conveying coolant fluid in a motor vehicle air conditioning circuit, the product comprising an inside layer made of a mixture of a polyamide 6 and at least one modifying agent such as a grafted poly(1,2-vinylbutadiene), a polyoctene, a brominated isobutylene-p-methylstyrene, a silane, or an ethylene and acrylic acid copolymer, and a layer of an elastomer such as a brominated butyl rubber modified by a grafted poly(1,2-vinylbutadiene), a silane, an ethylene and acrylic acid copolymer, or a copolymer of ethylene and of propylene grafted with maleic anhydride, there being total adhesion between the thermoplastic and the elastomer.