JP2022012087A - 湿気硬化型ホットメルト接着剤 - Google Patents
湿気硬化型ホットメルト接着剤 Download PDFInfo
- Publication number
- JP2022012087A JP2022012087A JP2020113640A JP2020113640A JP2022012087A JP 2022012087 A JP2022012087 A JP 2022012087A JP 2020113640 A JP2020113640 A JP 2020113640A JP 2020113640 A JP2020113640 A JP 2020113640A JP 2022012087 A JP2022012087 A JP 2022012087A
- Authority
- JP
- Japan
- Prior art keywords
- moisture
- melt adhesive
- polyol
- curable hot
- polyester polyol
- 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
- 239000004831 Hot glue Substances 0.000 title claims abstract description 117
- 229920005906 polyester polyol Polymers 0.000 claims abstract description 124
- 229920005862 polyol Polymers 0.000 claims abstract description 79
- 150000003077 polyols Chemical class 0.000 claims abstract description 79
- 150000002903 organophosphorus compounds Chemical class 0.000 claims abstract description 30
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 24
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 24
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000007795 chemical reaction product Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 7
- 238000013008 moisture curing Methods 0.000 claims description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- LIAWCKFOFPPVGF-UHFFFAOYSA-N 2-ethyladamantane Chemical compound C1C(C2)CC3CC1C(CC)C2C3 LIAWCKFOFPPVGF-UHFFFAOYSA-N 0.000 claims description 3
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims 1
- 239000012943 hotmelt Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 31
- 229920003002 synthetic resin Polymers 0.000 abstract description 14
- 239000000057 synthetic resin Substances 0.000 abstract description 14
- 239000000376 reactant Substances 0.000 abstract 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 31
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 29
- 239000002253 acid Substances 0.000 description 27
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 24
- 239000002585 base Substances 0.000 description 23
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 21
- 229910052799 carbon Inorganic materials 0.000 description 21
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 18
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 16
- 150000001412 amines Chemical class 0.000 description 14
- 239000001361 adipic acid Substances 0.000 description 12
- 235000011037 adipic acid Nutrition 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 12
- -1 isocyanate compound Chemical class 0.000 description 12
- 239000000155 melt Substances 0.000 description 12
- 125000004432 carbon atom Chemical group C* 0.000 description 11
- 239000003054 catalyst Substances 0.000 description 11
- 239000000203 mixture Substances 0.000 description 11
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- 239000000853 adhesive Substances 0.000 description 10
- 230000001070 adhesive effect Effects 0.000 description 10
- 238000002844 melting Methods 0.000 description 10
- 230000008018 melting Effects 0.000 description 10
- CXMXRPHRNRROMY-UHFFFAOYSA-N sebacic acid Chemical compound OC(=O)CCCCCCCCC(O)=O CXMXRPHRNRROMY-UHFFFAOYSA-N 0.000 description 10
- 239000000758 substrate Substances 0.000 description 10
- 238000001723 curing Methods 0.000 description 9
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 9
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 9
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- 239000011347 resin Substances 0.000 description 7
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 7
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 6
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- 230000003078 antioxidant effect Effects 0.000 description 6
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 6
- 239000004611 light stabiliser Substances 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 6
- 235000019198 oils Nutrition 0.000 description 6
- 239000004014 plasticizer Substances 0.000 description 6
- 238000012643 polycondensation polymerization Methods 0.000 description 6
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229920005672 polyolefin resin Polymers 0.000 description 5
- 239000004800 polyvinyl chloride Substances 0.000 description 5
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 4
- 238000000113 differential scanning calorimetry Methods 0.000 description 4
- 125000005442 diisocyanate group Chemical group 0.000 description 4
- 238000005227 gel permeation chromatography Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 4
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 4
- 229920000915 polyvinyl chloride Polymers 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 4
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 4
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 description 3
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 3
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-UHFFFAOYSA-N 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
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- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- TVIDDXQYHWJXFK-UHFFFAOYSA-N dodecanedioic acid Chemical compound OC(=O)CCCCCCCCCCC(O)=O TVIDDXQYHWJXFK-UHFFFAOYSA-N 0.000 description 3
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- 239000000945 filler Substances 0.000 description 3
- 239000012948 isocyanate Substances 0.000 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 description 3
- OEIJHBUUFURJLI-UHFFFAOYSA-N octane-1,8-diol Chemical compound OCCCCCCCCO OEIJHBUUFURJLI-UHFFFAOYSA-N 0.000 description 3
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- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Natural products CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
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- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 2
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- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
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- 239000004698 Polyethylene Substances 0.000 description 2
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
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Landscapes
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
湿気硬化型ホットメルト接着剤に含有されているウレタンプレポリマーは、所定のポリオールを含有するポリオール(A)と、ポリイソシアネート(B)との反応物である。ウレタンプレポリマーは、分子末端にイソシアネート基を有しており、分子両末端にイソシアネート基を有していることが好ましい。
ポリオール(A)は、微結晶性ポリエステルポリオール(A1)を含有している。微結晶性ポリエステルポリオール(A1)は、ポリカルボン酸とポリオールとの縮合重合体である。即ち、微結晶性ポリエステルポリオール(A1)は、ポリカルボン酸とポリオールとが、ポリカルボン酸のカルボキシル基とポリオールの水酸基においてエステル反応を生じて縮合重合して得られる重合体である。
ポリオール(A)は、微結晶性ポリエステルポリオール(A1)以外のポリオールを含有していてもよい。微結晶性ポリエステルポリオール(A1)以外のポリオール(A)としては、特に限定されず、例えば、結晶性ポリエステルポリオール(A2)、非結晶性ポリエステルポリオール(A3)、ポリアルキレンポリオール、及びポリカーボネートポリオールが好ましく挙げられ、結晶性ポリエステルポリオール(A2)、非結晶性ポリエステルポリオール(A3)が好ましい。微結晶性ポリエステルポリオール(A1)以外のポリオール(A)としては、結晶性ポリエステルポリオール(A2)を含むことが好ましい。微結晶性ポリエステルポリオール(A1)以外のポリオール(A)としては、結晶性ポリエステルポリオール(A2)及び非結晶性ポリエステルポリオール(A3)を含むことが好ましい。これらのポリオールは、単独で用いられてもよく、二種以上を併用して用いてもよい。
結晶性ポリエステルポリオール(A2)は、カルボキシ基(-COOH)中の炭素を除いた炭素数が2~14であるポリカルボン酸と、炭素数が2~8であるポリオールとの縮合重合体であることが好ましい。即ち、結晶性ポリエステルポリオール(A2)は、カルボキシ基中の炭素を除いた炭素数が2~14であるポリカルボン酸と、炭素数が2~8であるポリオールとが、ポリカルボン酸のカルボキシル基とポリオールの水酸基においてエステル反応を生じて縮合重合して得られる重合体であることが好ましい。ポリカルボン酸とポリオールとの縮合重合反応は汎用の方法を用いて行なわれればよい。なお、ポリカルボン酸において規定している、カルボキシ基中の炭素を除いた炭素数とは、分子中に含まれる炭素総数から全てのカルボキシ基中の炭素総数を引いて得られる炭素数をいう。
非結晶性ポリエステルポリオール(A3)は、ポリカルボン酸とポリオールとの縮合重合体が好ましい。即ち、非結晶性ポリエステルポリオール(A3)は、ポリカルボン酸とポリオールとが、ポリカルボン酸のカルボキシル基とポリオールの水酸基においてエステル反応を生じて縮合重合して得られる重合体であることが好ましい。
湿気硬化型ホットメルト接着剤は、ウレタンプレポリマーを含有しているが、このウレタンプレポリマーは、上記ポリオール(A)とポリイソシアネート(B)との反応物である。ウレタンプレポリマーは、ポリオール(A)とポリイソシアネート(B)とが、ポリオール(A)の水酸基とポリイソシアネート(B)のイソシアネート基とでウレタン結合を形成しながら縮合重合して得られる生成物である。
湿気硬化型ホットメルト接着剤は、有機燐系化合物(C)を含有している。有機燐系化合物(C)としては、特に限定されず、例えば、トリクレジルホスフェート、トリエチルホスフェート、トリブチルホスフェート、トリス(2-エチルヘキシル)ホスフェート、トリブトキシエチルホスフェート、トリフェニルホスフェート、オクチルジフェニルホスフェート、トリス(イソプロピルフェニル)ホスフェート、クレジルジフェニルホスフェート、トリフェニルホスフェート、トリフェニルホスフィン、トリフェニルホスフィンオキサイド、芳香族リン酸縮合エステルが挙げられる。有機燐系化合物は、単独で用いられても二種以上が併用されてもよい。
湿気硬化型ホットメルト接着剤は、その作用効果を阻害しない範囲で、粘着付与剤、オイル、可塑剤、硬化触媒、安定剤、充填材、酸化防止剤、光安定剤、紫外線吸収剤、着色剤、難燃剤、香料、顔料、染料などを含有していてもよい。
湿気硬化型ホットメルト接着剤の製造方法は特に限定されない。湿気硬化型ホットメルト接着剤の製造方法は、例えば、上述した要領で製造されたウレタンプレポリマーに、有機燐系化合物、必要に応じて添加剤を添加した上で加熱溶融して均一に混合することによって製造することができる。
・微結晶性ポリエステルポリオール(A1)(豊国製油社製 商品名「HS 2H-458T」、吸熱量:6cal/g、水酸基価:25mgKOH/g、数平均分子量:4500、アジピン酸及びテレフタル酸と、1,6-ヘキサンジオールとの縮合重合体)
・4,4’-ジフェニルメタンジイソシアネート
・トリフェニルホスフェート(大八化学工業社製 商品名「TPP」、融点:50℃)
・クレジルジフェニルホスフェート(大八化学工業社製、商品名「CDP」、融点:-38℃)
・トリクレジルホスフェート(大八化学工業社製 商品名「TCP」、融点:-33℃)
・ジイソノニルフタレート
ポリオール(A)、有機燐系化合物(C)及び可塑剤をそれぞれ表1及び表2に示した所定の配合量で、撹拌羽を有する1リットル四つ口フラスコ内に投入し、120℃にて加熱溶融させて溶融状態の混合物を作製し、1mmHg以下まで減圧することにより混合物を脱水した。しかる後、フラスコ内を窒素ガスでパージした後に混合物の温度を80℃まで冷却した。
湿気硬化型ホットメルト接着剤を120℃に加熱して溶融させた後、溶融状態の湿気硬化型ホットメルト接着剤を、ポリオレフィンシート(厚み180μm)の一面に塗工厚み50μmで塗工した。
常態接着性の測定時と同様の要領で試験片を作製した。次に、試験片を温度23℃、相対湿度55%環境下に1週間に亘って放置することにより、湿気硬化型ホットメルト接着剤を湿気硬化させた。60℃の温度環境下において、ポリオレフィンシートが下面となるようにして試験片を水平に設置した後、ポリオレフィンシートの長さ方向における一方の端部に、垂直方向に500g/25mmの加重をかけた。この状態のまま24時間経過後、ポリオレフィンシートがSPC基材から剥離した長さ(mm)を測定した。
湿気硬化型ホットメルト接着剤を120℃に加熱して溶融させた。溶融状態の湿気硬化型ホットメルト接着剤を平面長方形状(縦150cm×横50cm)で且つ厚みが180μmのポリオレフィン系樹脂シートの一面全面に塗工厚み50μmで塗工した。
Claims (3)
- 数平均分子量が3000~6000である微結晶性ポリエステルポリオールを含むポリオールとポリイソシアネートとの反応物であり且つ末端にイソシアネート基を有するウレタンプレポリマーと、有機燐系化合物とを含む湿気硬化型ホットメルト接着剤。
- ウレタンプレポリマー100質量部に対して有機燐系化合物0.1~20質量部を含むことを特徴とする請求項1に記載の湿気硬化型ホットメルト接着剤。
- 有機燐系化合物は、トリクレジルホスフェート、クレジルジフェニルホスフェート及びトリフェニルホスフェートからなる群から選ばれた少なくとも一種の有機燐系化合物を含むことを特徴とする請求項1又は請求項2に記載の湿気硬化型ホットメルト接着剤。
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JP3623149B2 (ja) | 2000-03-23 | 2005-02-23 | 積水化学工業株式会社 | 湿気硬化型接着剤組成物 |
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