폴리에스터 시트

본 발명의 과제는, 폴리에스터가 본래 갖는 높은 기계적 강도, 치수 안정성, 내구성 등의 우수한 성상을 유지하면서, 종래의 폴리에스터 시트보다도 광반사 성능이 우수한 폴리에스터 시트를 제공하는 것에 있고, 본 발명은, 폴리에스터(A), 특정한 융해열량 및 메소 다이애드 분율(m)이 98.5∼100%인 4-메틸-1-펜텐계 중합체(B) 및 상용화제(C)를 포함하는 폴리에스터 시트로서, 상기 (A), (B) 및 (C)의 함유 비율이, (A), (B), (C)의 합계를 100질량부로 했을 때에, (A)가 60∼98.9질량부, (B)가 1∼...

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Bibliographische Detailangaben
Hauptverfasser:	SASAKI TOYOAKI, YOSHIDA KENKICHI, TANAKA MASAKAZU, OKAMOTO MASAHIKO, TSUGANE YASUHITO, TAKAMINE KENJIRO, TADA TAKANORI
Format:	Patent
Sprache:	kor
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING 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 FREQUENCY-CHANGING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF GENERAL PROCESSES OF COMPOUNDING HEATING LIGHTING MECHANICAL ENGINEERING METALLURGY NON-LINEAR OPTICS OPTICAL ANALOGUE/DIGITAL CONVERTERS OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICAL LOGIC ELEMENTS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	본 발명의 과제는, 폴리에스터가 본래 갖는 높은 기계적 강도, 치수 안정성, 내구성 등의 우수한 성상을 유지하면서, 종래의 폴리에스터 시트보다도 광반사 성능이 우수한 폴리에스터 시트를 제공하는 것에 있고, 본 발명은, 폴리에스터(A), 특정한 융해열량 및 메소 다이애드 분율(m)이 98.5∼100%인 4-메틸-1-펜텐계 중합체(B) 및 상용화제(C)를 포함하는 폴리에스터 시트로서, 상기 (A), (B) 및 (C)의 함유 비율이, (A), (B), (C)의 합계를 100질량부로 했을 때에, (A)가 60∼98.9질량부, (B)가 1∼25질량부, (C)가 0.1∼15질량부이고, 추가로 상기 (B)가 하기 요건(a)∼(d)를 만족시키는, 폴리에스터 시트와 관련된다. (a) 4-메틸-1-펜텐 유래의 구성 단위가 100∼90몰%이고, 에틸렌 및 탄소 원자수 3∼20의 α-올레핀(4-메틸-1-펜텐을 제외함)으로부터 선택되는 적어도 1종의 α-올레핀에서 유래하는 구성 단위의 총합이 0∼10몰%. (b) 시차 주사형 열량 측정(DSC)으로 측정되는 융해열량 ΔHm(단위: J/g)과 융점 Tm(단위: ℃)이 이하의 요건(1), (2)를 만족시킨다. (1) ΔHm≥0.5×Tm-76 (2) 융점 Tm: 200∼260℃ (c) ASTM D1238에 준거하여 260℃, 5kg 하중 조건에서 측정한 멜트 플로 레이트(MFR)가 0.1∼500g/10분. (d)C-NMR로 측정되는 메소 다이애드 분율(m)이 98.5∼100%. An object of the present invention is to provide a polyester sheet having better light reflection performance than a conventional polyester sheet while maintaining the excellent properties, such as high mechanical strength, dimensional stability, and durability, inherent in polyester. The present invention relates to a polyester sheet including a polyester (A), a 4-methyl-1-pentene polymer (B) having a specific heat of fusion and a meso diad fraction (m) of 98.5 to 100%, and a compatibilizing agent (C), wherein content proportions of the (A), (B), and (C) are 60 to 98.9 parts by mass for (A), 1 to 25 parts by mass for (B), and 0.1 to 15 parts by mass for (C), when a total content of (A), (B), and (C) is set as 100 parts by mass, and wherein the (B) satisfies the following requirements (a) to (d):(a) an amount of a constitutional unit derived from 4-methyl-1-pentene is 100 to 90% by mol and a total amount of a constitutional unit derived from at least one α-olefin selected from ethylene and α-olefins having 3 to 20 carbon atoms (except for 4-methyl-1-pentene) is 0 to 10% by mol;(b) a heat of fusion ΔHm (units: J/g) and a melting point Tm (units: °C) measured by differential scanning calorimetry (DSC) satisfy the following requirements (1) and (2):(1)Δ⁢Hm≥0.5×Tm−76(2) Melting point Tm: 200 to 260°C;(c) a melt flow rate (MFR) measured under conditions of 260°C and a 5 kg load in conformity to ASTM D1238 is 0.1 to 500 g/10 min; and(d) a meso diad fraction (m) measured by13C-NMR is 98.5 to 100%.