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Liquid-crystal polyester resin composition, molded object thereof, and optical device
US9234092B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9234092-B2 |
| Application number | US-201013497186-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 18, 2010 |
| Priority date | Sep 29, 2009 |
| Publication date | Jan 12, 2016 |
| Grant date | Jan 12, 2016 |
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Abstract
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A liquid-crystal polyester resin composition according to the present invention contains 100 parts by mass of a liquid-crystal polyester (A), 50 to 150 parts by mass of a titanium oxide (B) having been subjected to an aluminum oxide treatment, a silicon oxide treatment and an organosiloxane treatment as surface treatments, and 0 to 50 parts by mass of an inorganic fibrous filler (C).
First claim
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The invention claimed is: 1. A liquid-crystal polyester resin composition, comprising: 100 parts by mass of a liquid-crystal polyester (A) that is a wholly aromatic thermotropic liquid-crystal polyester having a melting point of 320° C. or higher; 50 to 150 parts by mass of a titanium oxide (B) having been subjected to only an aluminum oxide treatment, a silicon oxide treatment and an organosiloxane treatment as surface treatments; and 0 to 50 parts by mass of an inorganic fibrous filler (C), wherein a molded object obtained by injection molding the liquid-crystal polyester resin composition has a reflectance of 85% or higher to light of a wavelength of 480 nm on a molded surface thereof, and an Izod impact strength of the molded object of 40 kJ/m 2 or higher. 2. The liquid-crystal polyester resin composition according to claim 1 , wherein the titanium oxide (B) has a primary particle diameter in the range of 0.2 to 0.3 μm. 3. A molded object, being obtained by injection molding a liquid-crystal polyester resin composition according to claim 1 . 4. An optical device, comprising: a light source; and a reflector of the light source, the reflector comprising a molded object according to claim 3 . 5. The optical device according to claim 4 , wherein the light source is a white LED. 6. A liquid-crystal polyester resin composition according to claim 1 , wherein at least one of the aluminum oxide treatment, the silicon oxide treatment, and the organosiloxane treatment is applied directly on a surface of the titanium dioxide (B).
Assignees
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Classifications
Liquid crystals · CPC title
characterised by materials, surface treatments or coatings, e.g. dichroic reflectors · CPC title
- C08K9/06Primary
with silicon-containing compounds · CPC title
Structural association of cells with optical devices, e.g. polarisers or reflectors · CPC title
inorganic · CPC title
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- What does patent US9234092B2 cover?
- A liquid-crystal polyester resin composition according to the present invention contains 100 parts by mass of a liquid-crystal polyester (A), 50 to 150 parts by mass of a titanium oxide (B) having been subjected to an aluminum oxide treatment, a silicon oxide treatment and an organosiloxane treatment as surface treatments, and 0 to 50 parts by mass of an inorganic fibrous filler (C).
- Who is the assignee on this patent?
- Nakayama Toshio, Murouchi Satoshi, Shiraishi Miyuki, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C08K9/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 12 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).