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:
Mar. 21, 2000
Filed:
May. 11, 1998
Applicant:
Inventor:
Serge Lorek, Pau, FR;
Assignee:
Elf Atochem S.A., Puteaux, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29D / ; B29D / ; B29K / ; B29K / ;
U.S. Cl.
CPC ...
428 359 ; 138118 ; 138137 ; 138141 ; 138D / ; 428 367 ; 428 3691 ; 428421 ; 4284735 ; 4284755 ; 4289033 ; 525199 ; 525217 ; 525230 ; 5253305 ;
Abstract
The present invention is directed to a multilayer material having in order a layer of fluorinated polymer, a layer of binder for fluorinated polymer having a polymer A with moieties (1)-(4), and a layer of polymer which is incompatible with the fluorinated polymer. The multilayer material is useful for making a pipe which has a superior barrier properties to petroleum products and the additives thereof. The present invention also relates to a pipe having a multilayer structure having two layers of polyamide and a layer of binder comprising a polymer A with glutarimide moieties (1)-(4) in between. The pipe has superior barrier properties to petroleum products and the additives.