METHOD OF MAKING VARNISH OF MODIFIED CYANATE ESTER GROUP CURABLE RESIN COMPOSITION, AND PREPREG, METAL CLAD LAMINATED BOARD, FILM, PRINTED CIRCUIT BOARD, AND MULTILAYERED CIRCUIT BOARD USING THE COMPOSITION
US6465083B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2000 |
| Grant date | Oct 15, 2002 |
| Priority date | — |
| Expiry date | Nov 4, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24917
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A modified cyanate ester group curable resin composition, and varnishes, prepregs, laminated boards adhered with metal foil, films, printed circuit boards, and multilayered circuit boards using the same, comprising:(A) a cyanate ester group compound expressed by chemical formula (1), (where, R1 is and respective of and R2 and R3 is any one of hydrogen or methyl group, and the both can be the same or different from each other,(B) a monovalent phenolic group compound expressed by chemical formula (2), or formula (3), where R4 and R5 is any one of hydrogen atom or low alkyl group having 1 to 4 carbon atoms, and the both can be the same or different from each other,n is a positive integer of 1 or 2.  (where, R6 is or  (C) a polyphenylene ether resin, (D) a flame retardant not reactive with the cyanate ester group compound, and (E) a metal group reaction catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.