Sealant composition
US-11898005-B2 · Feb 13, 2024 · US
Unsaturated polyester resin composition, molded article thereof, and lamp reflector
US9447944B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9447944-B2 |
| Application number | US-201314403346-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 15, 2013 |
| Priority date | May 28, 2012 |
| Publication date | Sep 20, 2016 |
| Grant date | Sep 20, 2016 |
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Abstract
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The present invention provides an unsaturated polyester resin composition including an unsaturated polyester, a crosslinking agent, an inorganic filling material, a hollow filler, and a fibrous reinforcing material, in which the hollow filler has a content ratio of a hollow filler having a particle diameter of 30 μm or less of 80 vol % or more with respect to the total volume of the hollow filler, and in which the content of the hollow filler in the unsaturated polyester resin composition is from 15 to 24 mass %. The unsaturated polyester resin composition can provide a molded article having both reduced specific gravity and improved self-tapping strength while maintaining the conventional characteristics (surface smoothness, heat resistance, mechanical strength, dimensional accuracy, and moldability).
First claim
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The invention claimed is: 1. An unsaturated polyester resin composition comprising an unsaturated polyester, a crosslinking agent, an inorganic filling material, a hollow filler, and a fibrous reinforcing material, wherein the hollow filler has a content ratio of a hollow filler having a particle diameter of 30 μm or less of 80 vol % or more with respect to a total volume of the hollow filler, wherein a content of the hollow filler in the unsaturated polyester resin composition is from 15 to 24 mass %, and wherein the hollow filler has a true specific gravity of from 0.4 to 0.7. 2. The unsaturated polyester resin composition according to claim 1 , wherein the hollow filler comprises at least one of glass balloons, silica balloons, or alumina balloons. 3. An unsaturated polyester resin composition for a lamp reflector, comprising the unsaturated polyester resin composition according to claim 1 . 4. A molded article, which is obtained by molding and curing the unsaturated polyester resin composition according to claim 1 . 5. The molded article according to claim 4 , wherein the molded article has a self-tapping strength of 1.7 N·m or more. 6. The molded article according to claim 4 , wherein the molded article has a specific gravity of from 1.1 to 1.3. 7. A lamp reflector, comprising the molded article according to claim 4 as a base material. 8. An unsaturated polyester resin composition for a lamp reflector, comprising the unsaturated polyester resin composition according to claim 2 . 9. A molded article, which is obtained by molding and curing the unsaturated polyester resin composition according to claim 2 . 10. A molded article, which is obtained by molding and curing the unsaturated polyester resin composition according to claim 3 . 11. The molded article according to claim 5 , wherein the molded article has a specific gravity of from 1.1 to 1.3. 12. A lamp reflector, comprising the molded article according to claim 5 as a base material. 13. A lamp reflector, comprising the molded article according to claim 6 as a base material.
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- What does patent US9447944B2 cover?
- The present invention provides an unsaturated polyester resin composition including an unsaturated polyester, a crosslinking agent, an inorganic filling material, a hollow filler, and a fibrous reinforcing material, in which the hollow filler has a content ratio of a hollow filler having a particle diameter of 30 μm or less of 80 vol % or more with respect to the total volume of the hollow fill…
- Who is the assignee on this patent?
- Showa Denko Kk, Stanley Electric Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C08L67/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 20 2016 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).