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:
Oct. 17, 2023
Filed:
Dec. 21, 2021
Elite Electronic Material (Kunshan) Co., Ltd., Kunshan, CN;
ELITE ELECTRONIC MATERIAL (KUNSHAN) CO., LTD., Kunshan, CN;
Abstract
A filler includes a first precursor and a second precursor; the first precursor is a hollow filler with a surface covered by a first silane coupling agent; the second precursor is a non-hollow filler with a surface covered by a second silane coupling agent; the first precursor and the second precursor are connected by a covalent bond formed by a chemical reaction between the first silane coupling agent and the second silane coupling agent. Also included are a preparation method of the filler and a resin composition containing the filler. A prepreg, a resin film, a laminate, or a printed circuit board made from the resin composition has excellent thermal resistance after moisture absorption, low Df variation rate under moisture and heat, low water absorption rate, high copper foil peeling strength, the prepreg having a smooth appearance and even color, and absence of branch-like pattern on laminate.