THERMOPLASTIC RESIN COMPOSITION FOR LIGHT-EMITTING DIODE REFLECTOR AND MOLDED PRODUCT COMPRISING SAME

• Main Authors: KIM, Ik Mo, LEE, Bong Jae, KIM, Hyun Su, LEE, Sang Hwa
• Format: Patent
• Language: English; French; Korean
• Published: 08.07.2021
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; SEMICONDUCTOR DEVICES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

A thermoplastic resin composition for a light-emitting diode reflector according to the present invention comprises: a polyester resin comprising repeating units represented by chemical formula 1; about 50-80 parts by weight of a white pigment; about 3-45 parts by weight of glass fiber; about 0.1-9 parts by weight of boehmite; and about 0.1-9 parts by weight of zinc borate, wherein the glass fiber comprises one or more selected from a glass fiber having a circular cross-section and a flat-type glass fiber, a weight ratio of the glass fiber to a total of the boehmite and the zinc borate is about 1:0.05-1:1, and a weight ratio of the boehmite to the zinc borate is about 1:0.1-1:10. The thermoplastic resin composition for a light-emitting diode reflector has excellent reflectance, reflectance retention rate, discoloration resistance, impact resistance, and the like. Une composition de résine thermoplastique pour un réflecteur de diode électroluminescente selon la présente invention comprend : une résine de polyester comprenant des motifs répétitifs représentés par la formule chimique 1 ; d'environ 50 à 80 parties en poids d'un pigment blanc ; d'environ 3 à 45 parties en poids de fibre de verre ; d'environ 0,1 à 9 parties en poids de bœhmite ; et d'environ 0,1 à 9 parties en poids de borate de zinc, la fibre de verre comprenant un ou plusieurs éléments choisis parmi une fibre de verre ayant une section transversale circulaire et une fibre de verre de type plat, un rapport pondéral de la fibre de verre à un total de la bœhmite et du borate de zinc étant d'environ 1:0,05 à 1:1, et le rapport pondéral de la bœhmite au borate de zinc étant d'environ 1:0,1 à 1:10. La composition de résine thermoplastique pour un réflecteur de diode électroluminescente présente une excellente réflectance, un excellent taux de rétention de réflectance, une excellente résistance à la décoloration, une excellente résistance aux chocs et analogues. 본 발명의 발광다이오드 리플렉터용 열가소성 수지 조성물은 화학식 1로 표시되는 반복단위를 포함하는 폴리에스테르 수지; 백색 안료 약 50 내지 약 80 중량부; 유리 섬유 약 3 내지 약 45 중량부; 뵈마이트 약 0.1 내지 약 9 중량부; 및 붕산아연 약 0.1 내지 약 9 중량부;를 포함하며, 상기 유리 섬유는 원형 단면 유리 섬유 및 평판형 유리 섬유 중 1종 이상을 포함하고, 상기 유리 섬유와 상기 뵈마이트 및 붕산아연의 합의 중량비가 약 1 : 0.05 내지 약 1 : 1이고, 상기 뵈마이트 및 붕산아연의 중량비가 약 1 : 0.1 내지 약 1 : 10인 것을 특징으로 한다. 상기 발광다이오드 리플렉터용 열가소성 수지 조성물은 반사율, 반사율 유지율, 내변색성, 내충격성 등이 우수하다.