Epoxy resin composition, prepreg, and fiber reinforced composite material
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 9, 2019
Grant Date -
Jan 25, 2018
app pub date -
Nov 27, 2015
filing date -
Feb 9, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An epoxy resin composition includes [A] an epoxy resin, [B] dicyandiamide, [C] an aromatic urea and [D] a boric acid ester and satisfies any one of (i) requirements [a] and [b], (ii) requirements [c] and [d] and (iii) requirements [c] and [e]:[a]: the time from when the temperature reaches 100° C. till when the heat flow reaches a peak top is 60 minutes or shorter as determined by a differential scanning calorimetry; [b]: the time from when the temperature reaches 60° C. till when the heat flow reaches a peak top is 25 hours or longer as determined by a differential scanning calorimetry; [c]: the average in all of the epoxy resins is 165 to 265 g/eq inclusive; [d]: in the component [A], [A1] a resin represented by formula (I) and/or a resin represented by formula (II) is contained in an amount of 10 to 50 parts by mass relative to the total amount of all of the epoxy resins; and [e]: in the component [A], [A2] a glycidylamine-type resin having a functionality of 3 or higher is contained in an amount of 10 to 50 parts by mass relative to the total amount of all of the epoxy resins.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2015 Application Filing Year
- C08J Class
- 2246 Applications Filed
- 1523 Patents Issued To-Date
- 67.81 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- C08J Class
- 47.54 % this patent is cited more than
- 6 Age
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|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jan 9, 2027 |
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