Curable resin material, resin molded body, and method for producing resin molded body
US-2024376250-A1 · Nov 14, 2024 · US
Prepreg for fiber reinforced plastic and production process thereof
US8945683B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8945683-B2 |
| Application number | US-59133509-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 17, 2009 |
| Priority date | Mar 31, 2003 |
| Publication date | Feb 3, 2015 |
| Grant date | Feb 3, 2015 |
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Abstract
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A prepreg of FRP (fiber reinforced plastic) having with (i) a matrix resin composition containing a bifunctional isocyanate and/or a trifunctional isocyanate, a polyol and a bifunctional chain extender having two active hydrogen groups at a molar ratio, as a functional group, of isocyanate:polyol:chain extender=5.0 to 1.0:1.0:4.0 to 0, or containing a bifunctional isocyanate and/or a trifunctional isocyanate and a polyol at a molar ratio, as a functional group, of liquid isocyanate:polyol=0.9 to 1.1:1.0; and (ii) a fibrous material. A production process of the prepreg. According to the present invention, the prepreg has a sufficient pot life and permits convenient production of an FRP molding.
First claim
Opening claim text (preview).
What is claimed is: 1. A production process of a prepreg of fiber reinforced plastic, comprising: impregnating a fibrous material with a matrix resin composition consisting of a liquid isocyanate, a polyol, and a bifunctional chain extender having two active hydrogen groups at a molar ratio, as a functional group, of isocyanate:polyol:chain extender=1.58:1.00:0.50 or 1.56:1.00:0.50; and semi-curing the impregnated matrix resin composition at 60° C.; wherein the liquid isocyan…
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- C08G18/4825Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US8945683B2 cover?
- A prepreg of FRP (fiber reinforced plastic) having with (i) a matrix resin composition containing a bifunctional isocyanate and/or a trifunctional isocyanate, a polyol and a bifunctional chain extender having two active hydrogen groups at a molar ratio, as a functional group, of isocyanate:polyol:chain extender=5.0 to 1.0:1.0:4.0 to 0, or containing a bifunctional isocyanate and/or a trifunctio…
- Who is the assignee on this patent?
- Hayashi Noriya, Hayashi Shunichi, Miwa Norio, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C08G18/4825. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 03 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).