JP2008115250A5 - - Google Patents

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JP2008115250A5
JP2008115250A5 JP2006298781A JP2006298781A JP2008115250A5 JP 2008115250 A5 JP2008115250 A5 JP 2008115250A5 JP 2006298781 A JP2006298781 A JP 2006298781A JP 2006298781 A JP2006298781 A JP 2006298781A JP 2008115250 A5 JP2008115250 A5 JP 2008115250A5
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parts
δyi
weight
light transmittance
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JP2008115250A (en
JP5235052B2 (en
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環状亜リン酸エステル系酸化防止剤(C)の配合量としては、ポリカーボネート樹脂(A)100重量部あたり0.005〜1重量部である。配合量が0.005重量部未満では熱安定性が劣るので好ましくない。また1重量部を超えると光線透過率が低下するので好ましくない。この配合量は、好ましくは、0.01〜0.5重量部、より好ましくは0.02〜1重量部の範囲である。 The amount of the cyclic phosphite antioxidant (C) is 0.005 to 1 part by weight per 100 parts by weight of the polycarbonate resin (A). If the blending amount is less than 0.005 parts by weight, the thermal stability is poor, which is not preferable. On the other hand, when the amount exceeds 1 part by weight, the light transmittance decreases, which is not preferable. This amount is preferably in the range of 0.01 to 0.5 parts by weight, more preferably 0.02 to 1 parts by weight.

本発明のジグセリン脂肪酸エステル(B)は、他の帯電防止剤と併用することができる。併用することができる他の帯電防止剤としては、広く公知のものを使用することができ、例えば、アルキルスルホン酸塩、アルキルベンゼンスルホン酸塩、アンモニウム塩、他のホスホニウム塩等が挙げられるが、これらに限定されるものではない。 The diglycerin fatty acid ester (B) of the present invention can be used in combination with other antistatic agents. As other antistatic agents that can be used in combination, widely known ones can be used, and examples thereof include alkylsulfonates, alkylbenzenesulfonates, ammonium salts, and other phosphonium salts. It is not limited to.

ポリカーボネート樹脂(A)、ジグセリン脂肪酸エステル(B)および環状亜りん系エステル系酸化防止剤(C)の混合方法ならびに混合順序には特に制限はなく、公知の混合機、例えば、タンブラー、リボンブレンダー、高速ミキサー等により混合し、その後一軸もしくは二軸押出機により溶融混練して行うことができる。 The mixing method and mixing order of the polycarbonate resin (A), the diglycerin fatty acid ester (B) and the cyclic phosphorous ester antioxidant (C) are not particularly limited, and known mixers such as tumblers, ribbon blenders, They can be mixed by a high-speed mixer or the like and then melt-kneaded by a single screw or twin screw extruder.

試験方法は以下のとおりである。
・メルトフローレート(MFR):
ASTM D−1238に準じて測定した。30g/10分以下を合格とした。
・表面抵抗率:
70x40x3mmの平板を射出成形にて作成し、以下の条件にて測定を行った。
平板試験片を23℃、55%相対湿度の条件で24時間状態調整した後、高抵抗率計
(三菱化学社製ハイレスターUP MCP−HT450)を使用し、測定電圧1000V、サンプリング時間30秒の条件で表面抵抗率を測定した。
表面抵抗率が1×1014Ω/sq未満を合格とした。
・全光線透過率:
ASTM D1003に準拠して測定した。87%以上を合格とした。
・ΔYI:
70×40×3mmの平板を射出成形にて成形した後、設定温度340℃のシリンダ
ー内で30分滞留させた後、さらに成形した。滞留前の成形品と滞留後の成形品のイ
エローネスインデックス(YI)をASTM D−1925に準拠して測定した。滞
留前のYIと滞留後のYIとの差をΔYIとし、2以下を合格とした。
The test method is as follows.
Melt flow rate (MFR):
Measured according to ASTM D-1238. 30 g / 10 min or less was accepted.
・ Surface resistivity:
A 70 × 40 × 3 mm flat plate was prepared by injection molding and measured under the following conditions.
After the plate test piece was conditioned for 24 hours under conditions of 23 ° C. and 55% relative humidity, a high resistivity meter (Hirester UP MCP-HT450 manufactured by Mitsubishi Chemical Corporation) was used, and the measurement voltage was 1000 V and the sampling time was 30 seconds. The surface resistivity was measured under the conditions.
A surface resistivity of less than 1 × 10 14 Ω / sq was accepted.
・ Total light transmittance:
Measured according to ASTM D1003. More than 87% was accepted.
ΔYI:
A 70 × 40 × 3 mm flat plate was formed by injection molding, then retained in a cylinder at a set temperature of 340 ° C. for 30 minutes, and further molded. The yellowness index (YI) of the molded product before residence and the molded product after residence was measured in accordance with ASTM D-1925. The difference between YI before retention and YI after residence was ΔYI, and 2 or less was accepted.

Figure 2008115250
Figure 2008115250

Figure 2008115250
Figure 2008115250

一方、本発明の要件を満たさない場合においては、いずれの場合も何らかの欠点を有していた。
比較例1は環状亜りん酸エステル系酸化防止剤が配合されないケースであり、この場合はΔYIに代表される耐熱性に劣る結果となった。
比較例2は環状亜りん酸エステル系酸化防止剤を本発明の要件である配合量範囲を超えて2部配合したケースであり、この場合はΔYI値及び全光線透過率が要求レベルを満足しなかった。
比較例3は帯電防止剤を本発明の要件である配合量範囲よりも少ない0.05部配合したケースであり、光線透過率、MFR値、ΔYI値は問題ないレベルであるが、表面抵抗率は要求レベルを満足しなかった。
比較例4は帯電防止剤を本発明の要件である配合量範囲を超えて6部配合したケースであり、表面抵抗率は問題ないレベルであるが、光線透過率、MFR値およびΔYI値が要求レベルを満足しなかった。

On the other hand, in the case where the requirements of the present invention were not satisfied, each case had some drawbacks.
Comparative Example 1 was a case where no cyclic phosphite antioxidant was blended. In this case, the heat resistance represented by ΔYI was inferior.
Comparative Example 2 is a case in which 2 parts of a cyclic phosphite-based antioxidant is blended exceeding the blending amount range which is a requirement of the present invention. In this case, the ΔYI value and the total light transmittance satisfy the required levels. There wasn't.
Comparative Example 3 is a case where 0.05 part of the antistatic agent is blended in an amount smaller than the blending amount range that is a requirement of the present invention, and the total light transmittance, MFR value, and ΔYI value are at a satisfactory level, but the surface resistance. The rate did not meet the required level.
Comparative Example 4 is a case in which 6 parts of the antistatic agent was blended exceeding the blending amount range which is a requirement of the present invention, and the surface resistivity was at a level with no problem, but the total light transmittance, MFR value and ΔYI value were The requested level was not satisfied.

JP2006298781A 2006-11-02 2006-11-02 Antistatic polycarbonate resin composition Active JP5235052B2 (en)

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JP2008115250A JP2008115250A (en) 2008-05-22
JP2008115250A5 true JP2008115250A5 (en) 2009-10-01
JP5235052B2 JP5235052B2 (en) 2013-07-10

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9570211B2 (en) 2008-08-27 2017-02-14 Covestro Llc Transparent thermoplastic composition with improved electrical conductivity in the melt
JP5058147B2 (en) * 2008-12-26 2012-10-24 住化スタイロンポリカーボネート株式会社 Antistatic polycarbonate resin composition with low molecular weight reduction and method for producing the same
JP5142225B2 (en) * 2008-12-26 2013-02-13 住化スタイロンポリカーボネート株式会社 Antistatic polycarbonate resin composition
JP5058148B2 (en) * 2008-12-26 2012-10-24 住化スタイロンポリカーボネート株式会社 Antistatic polycarbonate resin composition
JP5467572B2 (en) * 2009-12-24 2014-04-09 住化スタイロンポリカーボネート株式会社 Polycarbonate resin composition and molded article comprising the same
JP5397958B2 (en) * 2010-05-14 2014-01-22 住化スタイロンポリカーボネート株式会社 Flame retardant polycarbonate resin composition with excellent antistatic properties
JP5382730B2 (en) * 2010-05-19 2014-01-08 住化スタイロンポリカーボネート株式会社 Antistatic polycarbonate resin composition
JP6215717B2 (en) * 2014-01-14 2017-10-18 帝人株式会社 Antistatic polycarbonate resin composition
JP6346077B2 (en) * 2014-12-01 2018-06-20 帝人株式会社 Antistatic polycarbonate resin composition having light diffusibility
ES2689759T3 (en) * 2014-12-01 2018-11-15 Covestro Deutschland Ag Polycarbonate compositions loaded with improved fluidity and high rigidity
EP3115417A1 (en) * 2015-07-08 2017-01-11 Covestro Deutschland AG Impact-resistant modified polycarbonate compositions with improved flow properties and high resistance against deformation by heat
EP3115405B1 (en) * 2015-07-08 2017-12-27 Covestro Deutschland AG Boron nitride containing thermoplastic composition
US11472099B2 (en) * 2017-02-14 2022-10-18 Covestro Deutschland Ag Method for producing an object by means of an additive manufacturing process using a polycarbonate building material with improved flowability

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JPS61157558A (en) * 1984-12-28 1986-07-17 Riken Vitamin Co Ltd Thermoplastic resin composition
JP2645741B2 (en) * 1989-01-25 1997-08-25 出光石油化学株式会社 Antistatic polycarbonate composition
JP3876479B2 (en) * 1996-08-05 2007-01-31 住友化学株式会社 Phosphites, process for producing the same and uses thereof
JP2001181495A (en) * 1999-12-24 2001-07-03 Sumitomo Chem Co Ltd Polycarbonate resin composition, method for producing the same and method for preventing polycarbonate resin from becoming cloudy
JP2004027104A (en) * 2002-06-27 2004-01-29 Teijin Chem Ltd Polycarbonate resin composition and molding therefrom
JP4655665B2 (en) * 2004-02-26 2011-03-23 住友化学株式会社 Thermoplastic resin composition and process for producing the same

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