Process for preparing resin composition comprising benzoxazine, prepreg and laminate prepared therefrom
US10513608B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2017 |
| Grant date | Dec 24, 2019 |
| Priority date | — |
| Expiry date | Aug 9, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/068
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to a process for preparing a resin composition comprising benzoxazine, a prepreg and a laminate prepared therefrom. Said resin composition comprising benzoxazine is prepared by adding an acidic filler into the resin composition comprising benzoxazine, wherein said resin composition comprising benzoxazine comprises a benzoxazine resin, an epoxy resin A1 having an epoxy equivalent of 150-450, and an epoxy resin A2 having an epoxy equivalent of 451-1000. By adding an acidic filler into the resin composition, the present invention promotes the polymerization of benzoxazine and epoxy resins, and decreases the curing temperature needed for the polymerization of benzoxazine and epoxy resins. The laminates prepared from the resin composition added with an acidic filler have a high anti-stripping stability, a high glass transition temperature, a low water absorption, a high heat resistance, a high bending strength and a better processability, and achieves a low coefficient of thermal expansion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.