JP2017132948A - 紫外線吸収剤とそれを用いた樹脂部材 - Google Patents
紫外線吸収剤とそれを用いた樹脂部材 Download PDFInfo
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- JP2017132948A JP2017132948A JP2016016041A JP2016016041A JP2017132948A JP 2017132948 A JP2017132948 A JP 2017132948A JP 2016016041 A JP2016016041 A JP 2016016041A JP 2016016041 A JP2016016041 A JP 2016016041A JP 2017132948 A JP2017132948 A JP 2017132948A
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- 125000001425 triazolyl group Chemical group 0.000 description 1
- TUQOTMZNTHZOKS-UHFFFAOYSA-N tributylphosphine Chemical group CCCCP(CCCC)CCCC TUQOTMZNTHZOKS-UHFFFAOYSA-N 0.000 description 1
- WLPUWLXVBWGYMZ-UHFFFAOYSA-N tricyclohexylphosphine Chemical group C1CCCCC1P(C1CCCCC1)C1CCCCC1 WLPUWLXVBWGYMZ-UHFFFAOYSA-N 0.000 description 1
- 125000003258 trimethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- YWWDBCBWQNCYNR-UHFFFAOYSA-N trimethylphosphine Chemical group CP(C)C YWWDBCBWQNCYNR-UHFFFAOYSA-N 0.000 description 1
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical group C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 1
- 238000000870 ultraviolet spectroscopy Methods 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
前記の式(I)で表わされる紫外線吸収剤は、トリアジン系の紫外線吸収骨格に、式(i)で表わされる1価の硫黄含有基を導入するとともに、トリアジン骨格に結合する3つのベンゼン環への硫黄含有基の導入位置を、R1〜R5、R6〜R10、及びR11〜R15の3つの群から選ばれるいずれか2つの群としたことを特徴としている。この特定の位置での硫黄含有基の導入によって、モル吸光係数が高く、少量の添加量でも長波長領域の紫外線を吸収し、かつ黄変着色が抑制された樹脂部材を得ることができ、耐熱性にも優れたものとすることができる。
本発明において、「芳香族基、不飽和基、硫黄含有基、酸素含有基、リン含有基、脂環式基、及びハロゲン原子から選ばれる1価もしくは2価の基」には、高屈折率を付与できる基、耐熱性、樹脂に対する相溶性を調整できる基、樹脂及び/又は樹脂のモノマーと反応する基等が含まれ、例えば、次のものが含まれる。
(芳香族基)
芳香族基は、ベンゼン環、ナフタレン環、アントラセン環等の芳香環を含み、炭素数が好ましくは6〜18、より好ましくは6〜14である。1価もしくは2価の芳香族基としては、フェニル基、2−メチルフェニル基、3−メチルフェニル基、4−メチルフェニル基、2,4−ジメチルフェニル基、2,5−ジメチルフェニル基、3,4−ジメチルフェニル基、3,5−ジメチルフェニル基、2,4,5−トリメチルフェニル基、2,4,6−トリメチルフェニル基、4−ビフェニル基、1−ナフチル基、2−メトキシフェニル基、3−メトキシフェニル基、4−メトキシフェニル基、2−エトキシフェニル基、3−エトキシフェニル基、4−エトキシフェニル基、2−クロロフェニル基、2−フルオロフェニル基、4−フルオロフェニル基、2−トリフルオロメチルフェニル基、4−トリフルオロメチルフェニル基、1−ナフチル基、2−ナフチル基等が挙げられる。
(不飽和基)
不飽和基は、炭素−炭素二重結合、炭素−炭素三重結合、炭素−酸素二重結合(カルボニル基、アルデヒド基、カルボキシル基等)、炭素−窒素二重結合(イソシアネート基等)、炭素−窒素三重結合(シアノ基、シアナト基等)等の炭素−炭素又は炭素−ヘテロ原子の不飽和結合を含み、炭素数が好ましくは1〜10、より好ましくは1〜8である。1価もしくは2価の不飽和基としては、アクリロイル基、メタクロイル基、マレイン酸モノエステル基、スチリル基、アリル基、ビニル基、アミド基、カルバモイル基、シアノ基、イソシアネート基等が挙げられる。
(硫黄含有基)
硫黄含有基は、チオール基、スルフィド基、ジスルフィド基、スルホニル基、スルホ基、チオカルボニル基、チオカルバモイル基、又はチオ尿素基を含み、炭素数が好ましくは0〜10である。1価もしくは2価の硫黄含有基としては、チオメトキシ基、チオエトキシ基、チオ−n−プロポキシ基、チオイソプロポキシ基、チオ−n−ブトキシ基、チオ−t−ブトキシ基、チオフェノキシ基、p−メチルチオフェノキシ基、p−メトキシチオフェノキシ基、チオフェン基、チアゾール基、チオール基、スルホ基、スルフィド基、ジスルフィド基、スルホニル基、チオカルボニル基、チオ尿素基等が挙げられる。
(酸素含有基)
酸素含有基は、芳香環基又は脂環式基を含む場合には炭素数が好ましくは6〜12、芳香環基又は脂環式基を含まない場合には炭素数が好ましくは0〜6である。1価もしくは2価の酸素含有基としては、ヒドロキシ基、メトキシ基、エトキシ基、プロポキシ基、ブトキシ基、フェノキシ基、メチルフェノキシ基、ジメチルフェノキシ基、ナフトキシ基、フェニルメトキシ基、フェニルエトキシ基、アセトキシ基、アセチル基、アルデヒド基、カルボキシル基、カルバモイル基、尿素基、エーテル基、カルボニル基、エステル基、オキサゾール基、モルホリン基等が挙げられる。
(リン含有基)
リン含有基は、ホスフィン基、ホスファイト基、ホスホン酸基、ホスフィン酸基、リン酸基、又はリン酸エステル基を含み、芳香環基又は脂環式基を含む場合には炭素数が好ましくは6〜22、芳香環基又は脂環式基を含まない場合には炭素数が好ましくは0〜6である。1価もしくは2価のリン含有基としては、トリメチルホスフィン基、トリブチルホスフィン基、トリシクロヘキシルホスフィン基、トリフェニルホスフィン基、トリトリルホスフィン基、メチルホスファイト基、エチルホスファイト基、フェニルホスファイト基、ホスホン酸基、ホスフィン酸基、リン酸基、リン酸エステル基等が挙げられる。
(脂環式基)
脂環式基は、炭素数が好ましくは3〜10、より好ましくは3〜8である。1価もしくは2価の脂環式基としては、シクロプロピル基、シクロブチル基、シクロペンチル基、シクロヘキシル基、シクロヘプチル基、シクロオクチル基等が挙げられる。
(ハロゲン原子)
ハロゲン原子としては、フッ素原子、塩素原子、臭素原子、ヨウ素原子が挙げられる。
1.式(I)で表わされる紫外線吸収剤
前記の式(I)で表わされる紫外線吸収剤は、トリアジン系の骨格に前記の式(i)で表わされる1価の硫黄含有基を含む。
本発明の樹脂部材は、以上に説明した本発明の紫外線吸収剤を含有する。
(1) 本発明の紫外線吸収剤と樹脂又は、原料モノマーを含有するコーティング液を基材に塗布し、加熱、紫外線照射や乾燥で成膜する方法
(2) 本発明の紫外線吸収剤を樹脂又は、原料モノマーに混練して練り込み、押出機等を用いて成形・フィルム化する方法
(3) 本発明の紫外線吸収剤を樹脂接着剤に含有させ、その樹脂接着剤をフィルムに塗布する方法
(4) 本発明の紫外線吸収剤を原料モノマーに溶解し、金型やガラス型に注型し加熱、紫外線照射や乾燥で硬化させ成型する方法
<実施例1>
中間体1(5.00g, 22.1mmol)と塩化アルミニウム(9.73g, 73.0mmol)をO−キシレン100mL中で、25℃、30分反応させた後、中間体2(17.40g, 73.0mmol)を加え、80℃、8時間反応した。反応終了後、トルエンを加えて水洗、溶媒留去、カラム精製、再結晶を行うことにより、化合物1を得た。
1H−NMR (CDCl3 400MHz): δ 0.90 (t, 6H, CH 3(CH2)7S), 1.30 (m, 16H, CH3(CH 2)4(CH2)3S), 1.48 (m, 4H, CH3(CH2)4CH 2(CH2)2S), 1.76 (m, 4H, CH3(CH2)5CH 2CH2S), 3.02 (t, 4H, CH3(CH2)6CH 2S), 6.70 (d, 4H), 7.60 (t, 2H), 7.67 (d, 1H), 8.41 (d, 4H), (insg.13arom. CH), 13.27 (s, 2H, Ph-OH)
13C−NMR (CDCl3 400MHz): δ 14.1 (CH3(CH2)7S), 22.6 (CH3 CH2(CH2)6S), 29.0 (CH3CH2 CH2(CH2)5S), 29.1 (CH3(CH2)2(CH2)3(CH2)2S), 31.5 (CH3(CH2)5 CH2CH2S), 31.8 (CH3(CH2)6 CH2S), 114.3 ((HO-)Carom C aromC(-N)=N), 117.9, 128.8, 129.2, 129.8 (CHarom), 148.5 (C arom-S), 162.6 (C arom-OH), 178.5 (N-(Carom)-C=N)
1H−NMR (CDCl3 400MHz): δ 0.90 (t, 6H, CH 3(CH2)7S), 1.32 (m, 16H, CH3(CH 2)4(CH2)3S), 1.48 (m, 4H, CH3(CH2)4CH 2(CH2)2S), 1.77 (m, 4H, CH3(CH2)5CH 2CH2S), 2.48 (s, 3H, CH 3), 3.03 (t, 4H, CH3(CH2)6CH 2S), 6.86 (d, 4H), 7.38 (t, 2H), 8.29 (d, 4H), (insg.13arom. CH), 13.33 (s, 2H, Ph-OH)
13C−NMR (CDCl3 400MHz): δ 14.1 (CH3(CH2)7S), 21.8 (CH3), 22.7 (CH3 CH2(CH2)6S), 28.7 (CH3CH2 CH2(CH2)5S), 29.2 (CH3(CH2)2(CH2)3(CH2)2S), 31.6 (CH3(CH2)5 CH2CH2S), 31.8 (CH3(CH2)6 CH2S), 114.2 ((HO-)Carom C aromC(-N)=N), 117.8, 128.8, 129.9, 148.3 (CHarom), 144.6 (C arom-S), 162.5 (C arom-OH), 178.5 (N-(Carom)-C=N)
1H−NMR (CDCl3 400MHz): δ 0.90 (t, 6H, CH 3(CH2)7S), 1.32 (m, 16H, CH3(CH 2)4(CH2)3S), 1.48 (m, 4H, CH3(CH2)4CH 2(CH2)2S), 1.75 (m, 4H, CH3(CH2)5CH 2CH2S), 3.03 (t, 4H, CH3(CH2)6CH 2S), 6.85 (d, 4H), 7.56 (t, 2H), 8.33 (d, 4H), (insg.13arom. CH), 13.12 (s, 2H, Ph-OH)
13C−NMR (CDCl3 400MHz): δ 14.1 (CH3(CH2)7S), 22.6 (CH3 CH2(CH2)6S), 29.0 (CH3CH2 CH2(CH2)5S), 29.1 (CH3(CH2)2(CH2)3(CH2)2S), 31.6 (CH3(CH2)5 CH2CH2S), 31.8 (CH3(CH2)6 CH2S), 114.4 ((HO-)Carom C aromC(-N)=N), 118.1, 128.8, 129.2, 129.8 (CHarom), 149.1 (C arom-S), 162.5 (C arom-OH), 179.4 (N-(Carom)-C=N)
1H−NMR (CDCl3 400MHz): δ 2.53 (s, 6H, CH 3), 6.83 (d, 4H), 7.56 (t, 2H), 7.64 (d, 1H), 8.38 (d, 4H), (insg.13arom. CH), 13.25 (s, 2H, Ph-OH)
13C−NMR (CDCl3 400MHz): δ 14.6 (CH3), 113.3 ((HO-)Carom C aromC(-N)=N), 117.1, 128.7, 129.2, 133.5 (CHarom), 149.2 (C arom-S), 162.6 (C arom-OH), 178.5 (N-(Carom)-C=N)
1H−NMR (CDCl3 400MHz): δ 0.88 (t, 6H, CH 3(CH2)17S), 1.25 (m, 28H, CH3(CH 2)14(CH2)3S), 1.48 (m, 4H, CH3(CH2)14CH 2(CH2)2S), 1.77 (m, 4H, CH3(CH2)15CH 2CH2S), 3.02 (t, 4H, CH3(CH2)16CH 2S), 6.90 (d, 4H), 7.57 (t, 2H), 7.65 (d, 1H), 8.43 (d, 4H), (insg.13arom. CH), 13.28 (s, 2H, Ph-OH)
13C−NMR (CDCl3 400MHz): δ 14.1 (CH3(CH2)17S), 22.7 (CH3 CH2(CH2)16S), 29.2 (CH3CH2 CH2(CH2)15S), 29.6 (CH3(CH2)2(CH2)13(CH2)2S), 31.5 (CH3(CH2)15 CH2CH2S), 31.9 (CH3(CH2)16 CH2S), 114.3 ((HO-)Carom C aromC(-N)=N), 117.9, 128.8, 129.2, 129.8 (CHarom), 148.5 (C arom-S), 162.6 (C arom-OH), 178.5 (N-(Carom)-C=N)
1H−NMR (CDCl3 400MHz): δ 0.90 (t, 3H, CH 3(CH2)5-S), 1.34 (m, 2H, CH3(CH 2)2(CH2)3S), 1.47 (quin, 2H, CH3(CH2)2CH 2(CH2)2S), 1.75 (quin, 2H, CH3(CH2)3CH 2CH2S), 3.03 (t, 2H, CH3(CH2)3CH2CH 2S), 6.89 (d, 2H) , 7.62 (m, 6H), 8.58 (d, 1H) , 8.63 (m, 4H) (insg.13arom. CH), 13.43 (s, 1H, Ph-OH)
13C−NMR (CDCl3 400MHz): δ 14.0 (CH3(CH2)5S), 22.5(CH3 CH2(CH2)4S), 28.7 (CH3CH2 CH2 (CH2)3S), 28.8 (CH3(CH2)2 CH2(CH2)2S), 31.4 (CH3(CH2)3 CH2CH2S), 31.8(CH3(CH2)4 CH2S), 114.3 ((HO-)CC aromC(-N)=N),117.9, 129.0, 129.9, 133.0 (CHarom), 135.3 (C arom-C=N), 147.4 (C arom-S), 162.3 (C arom-OH), 171.4 (Carom-C=N)
1H−NMR (CDCl3 400MHz): δ 0.90 (t, 3H, CH 3(CH2)7S), 1.32 (m, 8H, CH3(CH 2)4(CH2)3S), 1.47 (quin, 2H, CH3(CH2)4CH 2(CH2)2S), 1.72 (quin, 2H, CH3(CH2)5CH 2CH2S), 2.92 (t, 2H, CH3(CH2)6CH 2S), 6.70 (d, 2H) , 7.72 (d, 1H), (insg.13arom. CH), 12.99 (s, 1H, Ph-OH)
13C−NMR (CDCl3 400MHz): δ 14.1 (CH3(CH2)7S), 22.7 (CH3 CH2(CH2)6S), 28.6 (CH3CH2 CH2(CH2)5S), 29.2 (CH3(CH2)2(CH2)3(CH2)2S), 31.5 (CH3(CH2)5 CH2CH2S), 31.9 (CH3(CH2)6 CH2S), 111.8 (C aromC=N), 113.9, 117.7, 128.4 (CHarom), 149.6 (C arom-S), 162.7 (C arom-OH), 168.2 (Carom-C=N)
1H−NMR (CDCl3 400MHz): δ 0.88 (t, 3H, CH 3(CH2)7S) , 1.27 (m, 8H, CH3(CH 2)4(CH2)3S), 1.49 (m, 11H, -Ph-OH-CH3-C(CH 3)3, CH3(CH2)4CH 2(CH2)2S), 1.75 (quin, 2H, CH3(CH2)5 CH 2CH2S), 2.38 (s, 3H, -Ph-OH-CH 3-C(CH3)3) , 3.03 (t, 2H, CH3(CH2)5CH2CH 2S), 7.16 (s, 1H), 7.37 (d, 1H), 7.70 (s, 1H), 7.81 (d, 1H), 8.05 (s, 1H), (insg.5arom. CH), 11.61 (s, 1H, -Ph-OH-CH3-C(CH3)3)
13C−NMR (CDCl3 400MHz): δ 14.0 (CH3(CH2)7S), 20.0 (-Ph-OH-CH3-C(CH3)3), 22.6 (-Ph-OH-CH3-C(CH3)3), 28.7 (CH3(CH2)5CH2CH2S), 31.9 (-Ph-OH-CH3-C(CH3)3) , 33.2 (CH3(CH2)5 CH2CH2S), 35.4 (CH3(CH2)5CH2 CH2S), 113.6, 117.5, 119.3, 128.7, 129.3 (CHarom), 141.2, 143.4 (C arom), 125.4(C arom-N), 128.3 (Carom-CH3), 138.0(C arom-S), 139.1(C arom-C(CH3)3), 146.7(C arom-OH)
(1)315〜400nm領域の吸収ピークの波長(最大吸収波長:λmax)
実施例及び比較例の化合物をクロロホルム5μMで希釈して10mm石英セルに収容し、紫外可視分光光度計(日本分光社製 V−550)を用いて紫外可視吸収スペクトルを測定し(図1、2)、UV−A(315〜400nm)の領域の吸収ピークを読み取った(表1)。
実施例及び比較例の化合物の吸収スペクトル(5μM)から、長波長領域(360〜400nm)の領域のピーク面積(例:図1実施例2)を、紫外可視分光光度計(日本分光社製 V−550)を用いて算出した(表1)。 化合物1〜5(実施例1〜5)の長波長領域(360〜400nm)のピーク面積は、式(i)を含有するフェニルを1つ導入したトリアジン系の化合物6(比較例1)、式(i)の置換基をもたないトリアジン系の化合物8(比較例3)及びベンゾトリアゾール系の化合物9,10(比較例4,5)の面積より大きい。
(3)315〜400nm領域の吸収ピークの波長(最大吸収波長:λmax)
上記(1)で測定した吸収ピークについては、紫外線吸収剤を添加した樹脂部材の黄色抑制の観点からは、315〜400nm領域の吸収ピークは400nmに近接しすぎると、可視域の波長をより多く吸収するため、その吸収ピークは390nm以下が好ましい。化合物7(比較例2)の吸収ピーク(392.5nm)は、391nm以上であり、樹脂部材を黄色化する傾向があるのに対して、化合物1〜5(実施例1〜5)は、360〜400nm付近の紫外線吸収効果に優れていると同時に、それらの最大吸収ピークは390nm以下にあり、可視域の波長の吸収を抑制し、添加した樹脂部材の黄色化を抑制する。
実施例及び比較例の化合物の吸収スペクトル(5μM)から、315〜400nmにある吸収ピークにおける長波長側の吸収スペクトルとベースライン(400〜500nmの吸収スペクトルの傾きが0のライン)との交点をピークエンドとして(例:図1実施例1)、下記式により、315〜400nmの波長領域にある吸収ピークの長波長側の傾きの絶対値を求めた(表1、3)。
|315〜400nmの波長領域にある吸収ピークの長波長側の傾き|=|(ピークエンドの吸光度−315〜400nmの波長領域にある吸収ピークの吸光度)/(ピークエンドの吸収波長−315〜400nmの波長領域にある吸収ピークの波長)|
上記の(2)と同様に、実施例及び比較例の化合物の吸収スペクトル(5μM)から、可視光領域(400〜450nm)の領域のピーク面積を、紫外可視分光光度計(日本分光社製 V−550)を用いて算出した(表1)。
実施例及び比較例の化合物の吸収スペクトルから、315〜400nmの波長領域の最大吸収ピーク(最大吸収波長:λmx)の吸光度を読み取り、そのピークのモル吸光係数(最大モル吸光係数:εmx)を下記式によって求めた(表1、2)。
モル吸光係数:εmx(L/(mol・cm)=:吸光度/[c:モル濃度(mol/L)×l:セルの光路長(cm)]
[1] 長波長領域の吸収効果
315〜400nm領域の吸収ピークの波長(最大吸収波長:λmax)
○:370〜400nm
△:365〜369nm
×:365nm未満
長波長領域(360〜400nm)のピーク面積
○:7以上
△:3以上
×:3未満
[2] 黄色抑制効果
315〜400nm領域の吸収ピークの波長(最大吸収波長:λmax)
○:390nm以下
×:391nm以上
315〜400nmの領域にある吸収ピークの長波長側の傾きの絶対値
○:0.003以上
△:0.002以上
×:0.002未満
400-450nmのピーク面積
○:1以下
△:3以下
×:4以上
[3] 紫外線吸収効率
モル吸光係数
○:40000以上
△:20000以上
×:20000未満
実施例及び比較例の化合物について、示差熱熱重量同時測定装置(SII社製、TG/T6200)を用いて、昇温温度:10℃/min、測定範囲:25〜550℃で測定を行い、重量変化(TG)が5重量%減少した温度を読み取った。
本発明の化合物のフィルム、樹脂部材に対する相溶性(透明性)の効果を下記方法で確認した(表5)。
フィルムの外観を目視で観察し、次の基準で評価した。
○:白濁なく透明
×:白濁が見られ透明性が悪い
膜厚は、フィルムを切断した断面を、卓上顕微鏡((株)日立ハイテク製Miniscope TM3000)を用いて計測した。
Claims (8)
- 下記式(I):
(式中、R1〜R15はそれぞれ独立に、下記式(i):
(式(i)中、R16は芳香族基、不飽和基、硫黄含有基、酸素含有基、リン含有基、脂環式基、及びハロゲン原子から選ばれる1価もしくは2価の基で、水素原子が置換されるか、両端の少なくともいずれかが中断されるか、又は炭素−炭素結合が中断されていてもよい炭素数1〜20の2価の炭化水素基を示し、R17はyが2以上の場合はそれぞれ独立に芳香族基、不飽和基、硫黄含有基、酸素含有基、リン含有基、脂環式基、及びハロゲン原子から選ばれる1価もしくは2価の基で、水素原子が置換されるか、両端の少なくともいずれかが中断されるか、又は炭素−炭素結合が中断されていてもよい炭素数1〜20の2価の炭化水素基を示し、R18は芳香族基、不飽和基、硫黄含有基、酸素含有基、リン含有基、脂環式基、及びハロゲン原子から選ばれる1価のもしくは2価の基で、水素原子が置換されるか、基端が中断されるか、又は炭素−炭素結合が中断されていてもよい炭素数1〜20の1価の炭化水素基、または水素原子を示す。R16とy個のR17とR18の総炭素数は60以下である。xは0又は1の整数を示し、yは0〜3の整数を示す。)で表わされる1価の硫黄含有基、水素原子、炭素数1〜10の炭化水素基、芳香族基、不飽和基、硫黄含有基、酸素含有基、リン含有基、脂環式基、及びハロゲン原子から選ばれる1価の基を示す。R1〜R5、R6〜R10、及びR11〜R15の3つの群から選ばれるいずれか2つの群のうちの1群当たり1〜4個の基が、式(i)で表わされる1価の硫黄含有基である。)で表わされる紫外線吸収剤。 - マトリックスが透明樹脂である請求項1に記載の紫外線吸収剤。
- 前記式(i)で表わされる1価の硫黄含有基は、R16とy個のR17とが炭素数18以下のアルキレン基を含み、R18が炭素数18以下のアルキル基を含む、請求項1又は2に記載の紫外線吸収剤。
- R1〜R15のうち式(i)で表わされる1価の硫黄含有基以外の置換基が、炭素数1〜4のアルキル基、ヒドロキシ基、及びハロゲン原子から選ばれる、請求項1から3のいずれかに記載の紫外線吸収剤。
- 前記式(i)で表わされる1価の硫黄含有基のx、yが0である、請求項1から4のいずれかに記載の紫外線吸収剤。
- 請求項1から5のいずれかに記載の紫外線吸収剤をマトリックスの樹脂中に含有する樹脂部材。
- マトリックスが透明樹脂である請求項6に記載の樹脂部材。
- フィルム、シート、プレート状部材、又は光学樹脂である請求項6又は7に記載の樹脂部材。
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