Varnish and prepreg, and substrates thereof
US8058363B2 · kind B2 · utility
4Cited by
0References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2009 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Jul 13, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A varnish includes resin and composite curing agent. The composite curing agent includes curing agent of polyphenylene methylphosphonate resin and curing agent of phenol resin. Glass fabric cloth is dipped into the varnish so as to form a prepreg with better thermal stability, anti-flammability, and low absorbent ability. Furthermore, the composite curing agent can be provided for higher curing rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.