JP2007320983A - 粘着剤組成物 - Google Patents
粘着剤組成物 Download PDFInfo
- Publication number
- JP2007320983A JP2007320983A JP2006149785A JP2006149785A JP2007320983A JP 2007320983 A JP2007320983 A JP 2007320983A JP 2006149785 A JP2006149785 A JP 2006149785A JP 2006149785 A JP2006149785 A JP 2006149785A JP 2007320983 A JP2007320983 A JP 2007320983A
- Authority
- JP
- Japan
- Prior art keywords
- meth
- group
- unsaturated monomer
- adhesive composition
- sensitive adhesive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 41
- 239000000853 adhesive Substances 0.000 title abstract description 20
- 230000001070 adhesive effect Effects 0.000 title abstract description 20
- 239000000178 monomer Substances 0.000 claims abstract description 80
- 229920006243 acrylic copolymer Polymers 0.000 claims abstract description 41
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 33
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 33
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims abstract description 32
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 31
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 23
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 18
- 125000001931 aliphatic group Chemical group 0.000 claims abstract description 15
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 14
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims abstract description 11
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 10
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 8
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 46
- -1 N, N-dimethylaminoethyl Chemical group 0.000 claims description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims description 15
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 11
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- 229920001577 copolymer Polymers 0.000 claims description 5
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 5
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical class O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 claims description 3
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 3
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004132 cross linking Methods 0.000 abstract description 16
- 239000011248 coating agent Substances 0.000 abstract description 9
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- SVTBMSDMJJWYQN-UHFFFAOYSA-N 2-methylpentane-2,4-diol Chemical compound CC(O)CC(C)(C)O SVTBMSDMJJWYQN-UHFFFAOYSA-N 0.000 description 4
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 4
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 4
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- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 4
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 4
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
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- 235000011187 glycerol Nutrition 0.000 description 3
- 239000012948 isocyanate Substances 0.000 description 3
- 150000002513 isocyanates Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
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- 229920000728 polyester Polymers 0.000 description 3
- 230000009257 reactivity Effects 0.000 description 3
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 3
- ZWVMLYRJXORSEP-UHFFFAOYSA-N 1,2,6-Hexanetriol Chemical compound OCCCCC(O)CO ZWVMLYRJXORSEP-UHFFFAOYSA-N 0.000 description 2
- ALVZNPYWJMLXKV-UHFFFAOYSA-N 1,9-Nonanediol Chemical compound OCCCCCCCCCO ALVZNPYWJMLXKV-UHFFFAOYSA-N 0.000 description 2
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 description 2
- UZKWTJUDCOPSNM-UHFFFAOYSA-N 1-ethenoxybutane Chemical compound CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 2
- ZWNMRZQYWRLGMM-UHFFFAOYSA-N 2,5-dimethylhexane-2,5-diol Chemical compound CC(C)(O)CCC(C)(C)O ZWNMRZQYWRLGMM-UHFFFAOYSA-N 0.000 description 2
- RWLALWYNXFYRGW-UHFFFAOYSA-N 2-Ethyl-1,3-hexanediol Chemical compound CCCC(O)C(CC)CO RWLALWYNXFYRGW-UHFFFAOYSA-N 0.000 description 2
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- DSKYSDCYIODJPC-UHFFFAOYSA-N 2-butyl-2-ethylpropane-1,3-diol Chemical compound CCCCC(CC)(CO)CO DSKYSDCYIODJPC-UHFFFAOYSA-N 0.000 description 2
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical class OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 2
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- 239000004386 Erythritol Substances 0.000 description 2
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Landscapes
- Adhesives Or Adhesive Processes (AREA)
Abstract
【解決手段】 必須の構成成分として炭素原子数4〜12のアルキル基を有する(メタ)アクリル酸アルキルエステル単量体(a)と窒素原子含有基を有するエチレン性不飽和単量体(b)と水酸基を有するエチレン性不飽和単量体(c)を用い、且つ、カルボキシル基含有エチレン性不飽和単量体(d)を用いずに得られる(メタ)アクリル系共重合体(A)と、1級又は2級炭素に結合したイソシアネート基を有する脂肪族又は脂環式ジイソシアネートより得られるポリイソシアネート系架橋剤(B)を含んでなることを特徴とする。
【選択図】 なし
Description
攪拌機、温度計、還流冷却管及び滴下漏斗を備えた反応容器に、第1表に示した如く、所定量の各単量体と、重合開始剤としてアゾビスイソブチロニトリル0.05重量部を、酢酸エチル150重量部に仕込み、窒素置換後80℃で8時間重合し、それぞれ(メタ)アクリル系共重合体(A−1)〜(A−6)を得た。
(メタ)アクリル系共重合体と、ポリイソシアネート系架橋剤と、必要に応じて粘着付与剤を第2表及び第3表に示す部数で配合し、25℃で混合後の粘度が初期の粘度の2倍に上昇するまでに要した時間を測定して、ポットライフ(hr)とした。尚、ここでいう「粘度」とは、BM型回転粘度計により、測定温度25℃で測定した値である。
(メタ)アクリル系共重合体と、ポリイソシアネート系架橋剤と、必要に応じて粘着付与剤を第2表及び第3表に示す部数で配合し、厚さ25μmのポリエチレンテレフタレート(PET)フィルムの表面に、乾燥後の膜厚が25μmとなるように塗布し、80℃で2分間乾燥して粘着シートを作成した。
粘着シート作成後、23℃雰囲気下で粘着シートのエージングを開始し、ゲル分率を毎日測定して、ゲル分率の測定値が安定化するまでの日数をシート加工後の架橋速度(日)とした。
上記で作成した粘着シートを50mm×50mmの大きさに切り取ったものを試料として、次に、予め上記試料のトルエン浸漬前の重量(G1)と粘着剤塗布前(基材のみ)の重量(G0)を測定しておき、トルエン溶液中に常温で24時間浸漬した。そして、浸漬後の試料のトルエン不溶解分を300メッシュ金網で濾過することにより分離し、110℃で1時間乾燥した後の残渣の重量(G2)を測定し、下式に従ってゲル分率を求めた。
ゲル分率(重量%)=(G2−G0)/(G1−G0)×100
上記で作成した粘着シートを厚さ25μmのPETフィルムに貼り付け、熱風乾燥機中120℃で168時間後の黄変の度合いを目視で観察し、下記の基準に従い評価した。
耐熱黄変性の評価基準
○;粘着シートの色調は変化しなかった。
△;粘着シートはやや黄変した。
×;粘着シートは著しく黄変した。
上記で作成した粘着シートをステンレス板に貼り付け、JIS Z−0237に準じ、23℃で相対湿度50%の雰囲気下で、貼り付け30分後に引っ張り速度300mm/分にて180度剥離強度(N/25mm)を測定し、接着力とした。
上記で作成した粘着シートをステンレス板に接着面積が25mm×25mmとなるように貼り付け、40℃にて1kgの荷重をかけて、ずれ落ちるまでの時間を測定し、その保持時間(分)を保持力とした。
BA ;n−ブチルアクリレート
2−EHA ;2−エチルヘキシルアクリレート
MMA ;メチルメタクリレート
AA ;アクリル酸
4−HBA ;4−ヒドロキシブチルアクリレート
HEA ;2−ヒドロキシエチルアクリレート
DM ;N,N−ジメチルアミノエチルメタクリレート
NVP ;N−ビニルピロリドン
KE100 ;荒川化学工業株式会社製、パインクリスタルKE−100(安定化淡色ロジンエステル)
FTR6100;三井石油化学工業株式会社製、FTR−6100(炭化水素樹脂)
TH−130 ;ヤスハラケミカル株式会社製、YSポリスターTH−130(水添テルペンフェノール樹脂)
ポリイソシアネート系架橋剤(B−1)は、1,6−ヘキサメチレンジイソシアネートとトリメチロールプロパンの重合物。
ポリイソシアネート系架橋剤(B−2)は、1,6−ヘキサメチレンジイソシアネートのヌレート化合物。
ポリイソシアネート系架橋剤(B−3)は、トリレンジイソシアネートとトリメチロールプロパンの重合物。
Claims (6)
- 必須の構成成分として炭素原子数4〜12の範囲のアルキル基を有する(メタ)アクリル酸アルキルエステル単量体(a)と窒素原子含有基を有するエチレン性不飽和単量体(b)と水酸基を有するエチレン性不飽和単量体(c)を用い、且つ、カルボキシル基含有エチレン性不飽和単量体(d)を用いずに得られる(メタ)アクリル系共重合体(A)と、1級又は2級炭素に結合したイソシアネート基を有する脂肪族又は脂環式ジイソシアネートより得られるポリイソシアネート系架橋剤(B)を含んでなることを特徴とする粘着剤組成物。
- 前記ポリイソシアネート系架橋剤(B)が、1,6−ヘキサメチレンジイソシアネート、イソホロンジイソシアネート及び水添キシリレンジイソシアネートからなる群より選ばれる少なくとも一種である請求項1記載の粘着剤組成物。
- 前記(メタ)アクリル系共重合体(A)が、反応に用いる全単量体の合計重量に対し、炭素原子数4〜12のアルキル基を有する(メタ)アクリル酸アルキルエステル単量体(a)を45.0〜99.5重量%の範囲、窒素原子含有基を有するエチレン性不飽和単量体(b)を0.01〜3.0重量%の範囲、水酸基を有するエチレン性不飽和単量体(c)を0.05〜20.0重量%の範囲で用いてなる共重合体である請求項1又は2記載の粘着剤組成物。
- 前記(メタ)アクリル系共重合体(A)の水酸基価が、0.5〜50.0mgKOH/gの範囲である請求項1〜3の何れか一項に記載の粘着剤組成物。
- 前記窒素原子含有基を有するエチレン性不飽和単量体(b)が、N,N−ジアルキルアミノエチル(メタ)アクリレートである請求項1〜4の何れか一項記載の粘着剤組成物。
- 前記窒素原子含有基を有するエチレン性不飽和単量体(b)が、N,N−ジメチルアミノエチル(メタ)アクリレートである請求項5記載の粘着剤組成物。
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JP2009155514A (ja) * | 2007-12-27 | 2009-07-16 | Dic Corp | 粘着剤、粘着フィルム、及び光学部材用表面保護フィルム |
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JP2012214805A (ja) * | 2011-03-31 | 2012-11-08 | Toyo Ink Sc Holdings Co Ltd | 積層シート用接着剤組成物 |
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US8962135B2 (en) | 2007-10-22 | 2015-02-24 | Nitto Denko Corporation | Pressure-sensitive adhesive composition for optical film, pressure-sensitive adhesive layer for optical film, production method thereof, pressure-sensitive adhesive optical film and image display |
JP2018080341A (ja) * | 2012-12-27 | 2018-05-24 | 日本合成化学工業株式会社 | 耐熱粘着フィルム用アクリル系樹脂およびそれを用いた粘着剤組成物、粘着剤、耐熱粘着フィルム、ならびに耐熱粘着フィルム用アクリル系樹脂の製造方法 |
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JP2021134322A (ja) * | 2020-02-28 | 2021-09-13 | 株式会社日本触媒 | 粘着剤組成物 |
JP7449117B2 (ja) | 2020-02-28 | 2024-03-13 | 株式会社日本触媒 | 粘着剤組成物 |
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