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:
Feb. 16, 2021
Filed:
May. 30, 2014
Uab Rekin International, Vilnius, LT;
Mark Hyman, Oxnard, CA (US);
State Research Institute Center for Physical Sciences and Technology, Vilnius, LT;
Mark Hyman, Agoura Hills, CA (US);
Leonas Narus̆kevic̆ius, Vilnius, LT;
Danas Budilovskis, Vilnius, LT;
UAB REKIN INTERNATIONAL, Vilnius, LT;
STATE RESEARCH INSTITUTE CENTER FOR PHYSICAL SCIENCES AND TECHNOLOGY, Vilnius, LT;
Other;
Abstract
Provided are chrome-free adhesion pretreatment processes for use on a variety of reinforced or unreinforced plastics and polymers, such as polyimides, polyetherimides and polyvinylchloride. The pretreatment process can be performed in a combination of two sequential operations, which includes treating with a first solution containing nitric acid and subsequently treating with a second solution that includes sulfuric acid and periodate ions. Alternatively, the pretreatment process can be performed by treatment with a single combined composition that includes nitric acid, sulfuric acid, and periodate ions. The pretreatment processes, either done in two separate solutions, sequentially, or in one combined solution, produce an adherent surface for further metallization of the article, with adhesional values of the metal layer higher than those achieved using conventional chromic acid pretreatment processes.