US 11,180,617 B2 · Method for preparing benzoxazine-containing resin composition, and prepreg and laminate made therefrom

Abstract

The present invention relates to a method for preparing a benzoxazine-containing resin composition and a prepreg and a laminate made therefrom. The method for preparing a benzoxazine-containing resin composition is adding an acidic filler to a benzoxazine-containing resin composition. By adding an acidic filler to the benzoxazine-containing resin composition, the present invention promotes greatly the polymerization reaction of benzoxazine and epoxy resin, reduces the curing temperature required for polymerization of benzoxazine and epoxy resin. The laminate prepared from the benzoxazine-containing resin composition, to which an acidic filler is added, has high anti-stripping stability, high glass transition temperature, low water absorption, high heat resistance, high bending strength and good processability, and can achieve low coefficient of thermal expansion.

Claims19

Dependent claims

A method for preparing a benzoxazine-containing resin composition, wherein the method comprises the steps of:

adding an acidic filler to a benzoxazine-containing resin composition, wherein the pH value of the acidic filler is between 2 and 6,
wherein the benzoxazine is diamine benzoxazine;
wherein the diamine benzoxazine resin monomer has a structure of formula (II)
wherein R3 is any one selected from the group consisting of
wherein the addition amount of the acidic filler is 5 to 200 parts by weight, based on 100 parts by weight of organic solids in the benzoxazine-containing resin composition.

2 more elements

Dependencies are inferred from the claim text.

Method for preparing benzoxazine-containing resin composition, and prepreg and laminate made therefrom

Life of this patent

Method for preparing benzoxazine-containing resin composition, and prepreg and laminate made therefrom

Life of this patent

Abstract

Claims19