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:
Jun. 19, 1979
Filed:
Dec. 15, 1976
Applicant:
Inventors:
Assignee:
Vitrofil S.p.A., Milan, IT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428391 ; 427387 ; 4274 / ; 428392 ; 428404 ; 528425 ; 32B / ;
Abstract
A process is described for imparting a better adhesion between reinforcing materials and a plastic matrix, characterized in that it comprises the steps of treating the reinforcing material surface with at least one organic compound of a tetravalent metal selected from the group consisting of zirconium and tin, at a temperature ranging from 250.degree. to 650.degree. C., of applying onto the reinforcing material surface so treated, at a lower temperature, at least one silane coupling agent and, finally, of drying the so-treated reinforcing material.