THERMOPLASTIC RESIN COMPOSITION AND MOLDED ARTICLE COMPRISING SAME

• Main Authors: KIM, Ik Mo, LEE, Bong Jae, KIM, Hyun Su, LEE, Sang Hwa
• Format: Patent
• Language: English; French; Korean
• Published: 03.06.2021
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FREQUENCY-CHANGING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICAL LOGIC ELEMENTS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PHYSICS; SEMICONDUCTOR DEVICES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

A thermoplastic resin composition of the present invention comprises: 100 parts by weight of a polyester resin comprising about 50 to about 90 wt% of a polycyclohexane-1,4-dimethyleneterephthalate resin, and about 10 to about 50 wt% of a glycol-modified polyester resin comprising a dicarboxylic acid component derived repeating unit containing about 80 to about 90 mol% of terephthalic acid and about 10 to about 20 mol% of isophthalic acid, and a diol component derived repeating unit containing 1,4-cyclohexanedimethanol; about 5 to about 30 parts by weight of glass fiber; about 5 to about 50 parts by weight of a white pigment; and about 0.1 to about 10 parts by weight of a chain extender. The thermoplastic resin composition has excellent reflectivity, reflectivity retention rate, impact resistance, heat resistance, molding processability, etc. La présente invention concerne une composition de résine thermoplastique qui comprend : 100 parties en poids d'une résine de polyester comprenant environ 50 à environ 90 % en poids d'une résine de polycyclohexane-téréphtalate de 1,4-diméthylène, et environ 10 à environ 50 % en poids d'une résine de polyester modifiée par glycol comprenant un motif de répétition dérivé d'un composant acide dicarboxylique contenant environ 80 à environ 90 % en moles d'acide téréphtalique et environ 10 à environ 20 % en moles d'acide isophtalique, et un motif de répétition dérivé d'un composant diol contenant du 1,4-cyclohexanediméthanol ; environ 5 à environ 30 parties en poids de fibre de verre ; environ 5 à environ 50 parties en poids d'un pigment blanc ; et environ 0,1 à environ 10 parties en poids d'un extenseur de chaîne. La composition de résine thermoplastique présente une excellente réflectivité, un excellent taux de rétention de réflectivité, une excellente résistance aux chocs, une excellente résistance à la chaleur, une excellente aptitude au moulage, etc. 본 발명의 열가소성 수지 조성물은 폴리시클로헥산-1,4-디메틸렌테레프탈레이트 수지 약 50 내지 약 90 중량%, 및 테레프탈산 약 80 내지 약 90 몰% 및 이소프탈산 약 10 내지 약 20 몰%를 포함하는 디카르복실산 성분 유래 반복단위 및 1,4-시클로헥산디메탄올을 포함하는 디올 성분 유래 반복단위를 포함하는 글리콜 변성 폴리에스테르 수지 약 10 내지 약 50 중량%를 포함하는 폴리에스테르 수지 약 100 중량부; 유리 섬유 약 5 내지 약 30 중량부; 백색 안료 약 5 내지 약 50 중량부; 및 사슬 연장제 약 0.1 내지 약 10 중량부;를 포함하는 것을 특징으로 한다. 상기 열가소성 수지 조성물은 반사율, 반사율 유지율, 내충격성, 내열성, 성형 가공성 등이 우수하다.