JP2017095692A - Energy ray curable sealer composition for housing material, housing material with coated film and manufacturing method therefor - Google Patents
Energy ray curable sealer composition for housing material, housing material with coated film and manufacturing method therefor Download PDFInfo
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- JP2017095692A JP2017095692A JP2016216475A JP2016216475A JP2017095692A JP 2017095692 A JP2017095692 A JP 2017095692A JP 2016216475 A JP2016216475 A JP 2016216475A JP 2016216475 A JP2016216475 A JP 2016216475A JP 2017095692 A JP2017095692 A JP 2017095692A
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- IIGAAOXXRKTFAM-UHFFFAOYSA-N N=C=O.N=C=O.CC1=C(C)C(C)=C(C)C(C)=C1C Chemical compound N=C=O.N=C=O.CC1=C(C)C(C)=C(C)C(C)=C1C IIGAAOXXRKTFAM-UHFFFAOYSA-N 0.000 description 1
- QORUGOXNWQUALA-UHFFFAOYSA-N N=C=O.N=C=O.N=C=O.C1=CC=C(C(C2=CC=CC=C2)C2=CC=CC=C2)C=C1 Chemical compound N=C=O.N=C=O.N=C=O.C1=CC=C(C(C2=CC=CC=C2)C2=CC=CC=C2)C=C1 QORUGOXNWQUALA-UHFFFAOYSA-N 0.000 description 1
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- ORLQHILJRHBSAY-UHFFFAOYSA-N [1-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1(CO)CCCCC1 ORLQHILJRHBSAY-UHFFFAOYSA-N 0.000 description 1
- MPIAGWXWVAHQBB-UHFFFAOYSA-N [3-prop-2-enoyloxy-2-[[3-prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propoxy]methyl]-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C MPIAGWXWVAHQBB-UHFFFAOYSA-N 0.000 description 1
- DBHQYYNDKZDVTN-UHFFFAOYSA-N [4-(4-methylphenyl)sulfanylphenyl]-phenylmethanone Chemical compound C1=CC(C)=CC=C1SC1=CC=C(C(=O)C=2C=CC=CC=2)C=C1 DBHQYYNDKZDVTN-UHFFFAOYSA-N 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- JGCWKVKYRNXTMD-UHFFFAOYSA-N bicyclo[2.2.1]heptane;isocyanic acid Chemical compound N=C=O.N=C=O.C1CC2CCC1C2 JGCWKVKYRNXTMD-UHFFFAOYSA-N 0.000 description 1
- QPKOBORKPHRBPS-UHFFFAOYSA-N bis(2-hydroxyethyl) terephthalate Chemical compound OCCOC(=O)C1=CC=C(C(=O)OCCO)C=C1 QPKOBORKPHRBPS-UHFFFAOYSA-N 0.000 description 1
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- OWBTYPJTUOEWEK-UHFFFAOYSA-N butane-2,3-diol Chemical compound CC(O)C(C)O OWBTYPJTUOEWEK-UHFFFAOYSA-N 0.000 description 1
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- PDXRQENMIVHKPI-UHFFFAOYSA-N cyclohexane-1,1-diol Chemical compound OC1(O)CCCCC1 PDXRQENMIVHKPI-UHFFFAOYSA-N 0.000 description 1
- FOTKYAAJKYLFFN-UHFFFAOYSA-N decane-1,10-diol Chemical compound OCCCCCCCCCCO FOTKYAAJKYLFFN-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- XXMIOPMDWAUFGU-UHFFFAOYSA-N hexane-1,6-diol Chemical compound OCCCCCCO XXMIOPMDWAUFGU-UHFFFAOYSA-N 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-M hexanoate Chemical compound CCCCCC([O-])=O FUZZWVXGSFPDMH-UHFFFAOYSA-M 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 150000007529 inorganic bases Chemical class 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 125000005641 methacryl group Chemical group 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- OEIJHBUUFURJLI-UHFFFAOYSA-N octane-1,8-diol Chemical compound OCCCCCCCCO OEIJHBUUFURJLI-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- LYXOWKPVTCPORE-UHFFFAOYSA-N phenyl-(4-phenylphenyl)methanone Chemical compound C=1C=C(C=2C=CC=CC=2)C=CC=1C(=O)C1=CC=CC=C1 LYXOWKPVTCPORE-UHFFFAOYSA-N 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
- 239000004632 polycaprolactone Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 150000003509 tertiary alcohols Chemical class 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical group O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Polyurethanes Or Polyureas (AREA)
- Paints Or Removers (AREA)
- Finishing Walls (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
本発明は、建材への浸透性に優れ、密着性、耐水性、耐透水性、耐凍結融解性等を向上させ、基材を強化する建材用シーラー組成物および該組成物から形成された硬化被膜を有する建材に関する。 The present invention is excellent in permeability to building materials, improves adhesion, water resistance, water permeability resistance, freeze-thaw resistance, etc., and strengthens a base material for building material sealer composition and cured formed from the composition The present invention relates to a building material having a coating.
従来、内外装、屋根等に広く使用されている建材の表面(前面)には、一般的に目止め用のシーラー組成物、基材を隠ぺいする下塗り塗料、意匠性を目的とする上塗り塗料が塗装されている。また、裏面(背面)は、一般的に無塗装であるか、目止め用のシーラー組成物が塗装されている。 Conventionally, on the surface (front surface) of building materials widely used for interior and exterior, roofs, etc., sealer compositions for sealing, undercoat paints for concealing base materials, and topcoat paints for design purposes are generally used. It is painted. Moreover, the back surface (back surface) is generally unpainted or coated with a sealing sealer composition.
前記シーラー組成物としては、従来、塩化ビニル樹脂系、2液型ウレタン樹脂系、ポリイソシアネート系湿式硬化型等の有機溶剤系シーラー組成物や、エポキシ樹脂系エマルション、水分散性ポリイソシアネート、コア・シェル型ビニル系エマルション等の水系シーラー組成物が用いられてきた。 Conventionally, as the sealer composition, organic solvent-based sealer compositions such as vinyl chloride resin-based, two-component urethane resin-based, polyisocyanate-based wet-curing type, epoxy resin-based emulsion, water-dispersible polyisocyanate, core Aqueous sealer compositions such as shell-type vinyl emulsions have been used.
しかし、従来のシーラー組成物は、施工した硬化被膜が完全に硬化するまでに時間を要するため、上層に下塗り塗料を塗装する際に、施工性の点で課題があった。また、建材の裏面のように下塗り塗料を塗装しない場合であっても、基材を積み重ねる際に、ブロッキングが起こりやすくなるという問題があった。
そこで、従来の溶剤系、水系シーラー組成物よりも施工性に優れるエネルギー線硬化型シーラー組成物が発明されている(特許文献1、2)。
However, since the conventional sealer composition requires time until the applied cured film is completely cured, there has been a problem in terms of workability when an undercoat paint is applied to the upper layer. Further, even when the undercoat paint is not applied like the back surface of the building material, there is a problem that blocking tends to occur when the base materials are stacked.
Therefore, an energy ray curable sealer composition has been invented that has better workability than conventional solvent-based and water-based sealer compositions (Patent Documents 1 and 2).
ところで、寒冷地において建材を構造物の壁面に用いる際、室内と外気の気温差によって、建材裏面が特に結露しやすく、その水分が基材に滲み込み凍結と融解を繰り返すことで、基材劣化が促進するという問題がある。よって、寒冷地に用いられる建材には、特に耐水性、耐透水性、耐凍結融解性が求められる。 By the way, when building materials are used on the walls of structures in cold regions, the back of building materials is particularly susceptible to condensation due to the temperature difference between indoor and outdoor air. There is a problem that promotes. Therefore, building materials used in cold regions are particularly required to have water resistance, water permeability resistance, and freeze-thaw resistance.
しかしながら、特許文献1、2のシーラー組成物は耐水性の点で課題があり、特にシーラー組成物を建材の裏面に用いた際に、結露等によって水分が生じると、シーラー層のみでは耐水性が不十分なため基材(建材)との密着性が劣化し、水分が基材に滲み込むことを防ぐことが出来ず、寒冷地における基材劣化を防ぐことが出来なかった。また、基材に滲み込んだ水分が凍結・融解を繰り返すことで基材にひび割れが発生すると、シーラー層が追従できず割れが発生し、より一層基材劣化が促進される問題があった。 However, the sealer composition of Patent Documents 1 and 2 has a problem in terms of water resistance. Especially when the sealer composition is used on the back surface of the building material, when moisture is generated due to condensation or the like, the sealer layer alone has water resistance. Insufficient adhesion with the base material (building material) deteriorated, preventing moisture from seeping into the base material, and preventing base material deterioration in cold regions. In addition, when the moisture that has permeated into the base material is repeatedly frozen and thawed, cracks are generated in the base material, the sealer layer cannot follow and cracks occur, which further promotes deterioration of the base material.
さらに、窯業系建材等の無機建材は、不燃建材板として内装のほか、外装、屋根等に広く使用されている。このため無機建材では、上述した寒冷地での基材劣化がより問題となる。 In addition, inorganic building materials such as ceramic building materials are widely used for interiors, exteriors and roofs as non-combustible building material plates. For this reason, with inorganic building materials, the above-described deterioration of the base material in cold regions becomes more problematic.
本発明は、上記のような従来技術に伴う問題点を解決しようとするものであって、施工性、耐ブロッキング性、耐水性、耐透水性、耐凍結融解性に優れ、揮発性有機化合物を低減できる(低VOC化できる)、無機建材などの建材用エネルギー線硬化型シーラー組成物、該シーラー組成物から形成された硬化被膜を有する被膜付き建材、および建材の製造方法を提供することを目的としている。 The present invention is intended to solve the problems associated with the prior art as described above, and is excellent in workability, blocking resistance, water resistance, water permeability resistance, freeze-thaw resistance, and volatile organic compounds. An object of the present invention is to provide an energy ray curable sealer composition for building materials such as inorganic building materials, a building material with a film having a cured film formed from the sealer composition, and a method for producing the building material. It is said.
本発明の要旨は以下のとおりである。
[1]
ポリイソシアネート(a1)と、分子量60以上620以下である低分子ジオール(a2)と、水酸基を有する(メタ)アクリレート(a3)と、を反応させてなるウレタン(メタ)アクリレート樹脂(A)と、
ポリイソシアネート(B)と、
光重合開始剤(C)と
を含有することを特徴とする建材用エネルギー線硬化型シーラー組成物。
The gist of the present invention is as follows.
[1]
A urethane (meth) acrylate resin (A) obtained by reacting a polyisocyanate (a1), a low-molecular diol (a2) having a molecular weight of 60 or more and 620 or less, and a (meth) acrylate (a3) having a hydroxyl group;
Polyisocyanate (B);
An energy ray curable sealer composition for building materials, comprising a photopolymerization initiator (C).
[2]
前記ポリイソシアネート(B)が、前記ウレタン(メタ)アクリレート樹脂(A)100重量部に対して、0.1〜400重量部の範囲内で含まれることを特徴とする前記[1]に記載の建材用エネルギー線硬化型シーラー組成物。
[2]
The polyisocyanate (B) is contained in a range of 0.1 to 400 parts by weight with respect to 100 parts by weight of the urethane (meth) acrylate resin (A). Energy ray curable sealer composition for building materials.
[3]
前記ウレタン(メタ)アクリレート樹脂(A)の分子量が、500以上20,000以下であることを特徴とする前記[1]または[2]に記載の建材用エネルギー線硬化型シーラー組成物。
[3]
The energy ray curable sealer composition for building materials according to [1] or [2], wherein the urethane (meth) acrylate resin (A) has a molecular weight of 500 or more and 20,000 or less.
[4]
更に、光重合性不飽和基を有するモノマー(D)を含有することを特徴とする前記[1]〜[3]のいずれかに記載の建材用エネルギー線硬化型シーラー組成物。
[4]
Furthermore, it contains the monomer (D) which has a photopolymerizable unsaturated group, The energy-beam curable sealer composition for building materials in any one of said [1]-[3] characterized by the above-mentioned.
[5]
前記建材用エネルギー線硬化型シーラー組成物が、無機建材用エネルギー線硬化型シーラー組成物であることを特徴とする前記[1]〜[4]のいずれかに記載の建材用エネルギー線硬化型シーラー組成物。
[5]
The energy beam curable sealer composition for building materials according to any one of [1] to [4], wherein the energy beam curable sealer composition for building materials is an energy beam curable sealer composition for inorganic building materials. Composition.
[6]
基材表面の少なくとも一部に、前記[1]〜[5]のいずれかに記載の建材用エネルギー線硬化型シーラー組成物から形成された硬化被膜を有することを特徴とする被膜付き建材。
[6]
A building material with a coating, comprising a cured coating formed from the energy ray curable sealer composition for building materials according to any one of [1] to [5] on at least a part of the surface of the substrate.
[7]
基材表面の少なくとも一部に、前記[1]〜[5]のいずれかに記載の建材用エネルギー線硬化型シーラー組成物を塗装した後、当該塗装面にエネルギー線を照射して該組成物を硬化させ、硬化被膜を形成させることを特徴とする被膜付き建材の製造方法。
[7]
After coating the building material energy ray curable sealer composition according to any one of [1] to [5] on at least a part of the surface of the substrate, the composition surface is irradiated with energy rays. The manufacturing method of the building material with a film characterized by hardening | curing and forming a cured film.
本発明の無機建材などの建材用エネルギー線硬化型シーラー組成物から得られた硬化被膜は、密着性、耐水性、耐透水性、耐凍結融解性、耐ブロッキング性に優れる。特に、エネルギー線硬化型であるため、施工性に優れ、工場での生産性の向上に寄与する。また、低VOC化も可能であり、環境対応に優れた建材を得ることが出来る。 The cured film obtained from the energy ray curable sealer composition for building materials such as the inorganic building material of the present invention is excellent in adhesion, water resistance, water permeability, freeze-thaw resistance, and blocking resistance. In particular, since it is an energy beam curable type, it is excellent in workability and contributes to improvement of productivity in the factory. Moreover, the VOC can be reduced, and a building material excellent in environmental response can be obtained.
以下、本発明の一実施形態について説明する。
なお、本発明書において、「(メタ)アクリレート」はアクリレートおよびメタアクリレートを表し、「(メタ)アクリル」はアクリルおよびメタアクリルを表し、「(メタ)アクリロイル」は、アクリロイルおよびメタクリロイルを表す。また、光重合性不飽和基とは、光により重合反応に関与する不飽和基を意味する。
Hereinafter, an embodiment of the present invention will be described.
In the present invention, “(meth) acrylate” represents acrylate and methacrylate, “(meth) acryl” represents acryl and methacryl, and “(meth) acryloyl” represents acryloyl and methacryloyl. Moreover, a photopolymerizable unsaturated group means the unsaturated group which participates in a polymerization reaction with light.
[建材用エネルギー線硬化型シーラー組成物]
本実施形態に係る建材用エネルギー線硬化型シーラー組成物は、ポリイソシアネート(a1)と、分子量60以上620以下の低分子ジオール(a2)と、水酸基を有する(メタ)アクリレート(a3)とを反応させてなるウレタン(メタ)アクリレート樹脂(A)と、前記成分(a1)と同一または異なっても良いポリイソシアネート(B)と、光重合開始剤(C)とを必須成分とすることを特徴とする。本発明の建材用エネルギー線硬化型シーラー組成物は、エネルギー線硬化型であるため耐ブロッキング性、施工性に優れ、低VOC化も可能である。以下、各成分について説明する。
[Energy beam curable sealer composition for building materials]
The building material energy ray curable sealer composition according to the present embodiment reacts a polyisocyanate (a1), a low molecular diol (a2) having a molecular weight of 60 or more and 620 or less, and a (meth) acrylate (a3) having a hydroxyl group. The urethane (meth) acrylate resin (A), the polyisocyanate (B) that may be the same as or different from the component (a1), and the photopolymerization initiator (C) are essential components. To do. Since the energy ray curable sealer composition for building materials of the present invention is an energy ray curable type, it is excellent in blocking resistance and workability and can be reduced in VOC. Hereinafter, each component will be described.
<ウレタン(メタ)アクリレート樹脂(A)(成分(A))>
ウレタン(メタ)アクリレート樹脂(A)(以下、成分(A)あるいは樹脂(A)ともいう)は、少なくとも、ポリイソシアネート(a1)と、分子量60以上620以下の低分子ジオール(a2)と、水酸基を有する(メタ)アクリレート(a3)とを必須成分とした化合物の混合物を反応させて得られる樹脂である。本明細書において、樹脂(A)にはオリゴマーも含む。樹脂(A)の分子量は、ゲル・パーミュエーション・クロマトグラフィー(GPC)にて測定される重量平均分子量を指す。樹脂(A)の分子量は特に限定されないが、通常500以上20,000以下、好ましくは600以上8,000以下、特に好ましくは650以上4,000以下である。
<Urethane (meth) acrylate resin (A) (component (A))>
Urethane (meth) acrylate resin (A) (hereinafter also referred to as component (A) or resin (A)) is at least a polyisocyanate (a1), a low molecular diol (a2) having a molecular weight of 60 to 620, and a hydroxyl group. It is a resin obtained by reacting a mixture of compounds containing (meth) acrylate (a3) having an essential component. In the present specification, the resin (A) includes an oligomer. The molecular weight of the resin (A) refers to the weight average molecular weight measured by gel permeation chromatography (GPC). The molecular weight of the resin (A) is not particularly limited, but is usually 500 or more and 20,000 or less, preferably 600 or more and 8,000 or less, and particularly preferably 650 or more and 4,000 or less.
成分(A)は、光重合性不飽和基((メタ)アクリロイル基)と、ウレタン結合とを有する。成分(A)は分子量60以上620以下の低分子ジオール(a2)からなる構成単位を有しており、より高分子のジオールを用いた場合と比較してウレタン結合量が多い。このような成分(A)を用いると、硬化塗膜としたときに硬度と柔軟性のバランスが良く、耐水性、密着性、耐透水性、耐凍結融解性、耐ブロッキング性に優れている。ウレタン結合量が多いと、硬化被膜としたときに架橋密度が高くなるため、上記特性が向上すると考えられる。 The component (A) has a photopolymerizable unsaturated group ((meth) acryloyl group) and a urethane bond. The component (A) has a structural unit composed of a low molecular diol (a2) having a molecular weight of 60 or more and 620 or less, and has a higher urethane bond amount than when a higher molecular diol is used. When such a component (A) is used, the cured film has a good balance between hardness and flexibility, and is excellent in water resistance, adhesion, water permeability, freeze-thaw resistance, and blocking resistance. When the amount of urethane bonds is large, it is considered that the above characteristics are improved because the crosslink density becomes high when a cured film is formed.
(ポリイソシアネート(a1)(成分(a1)))
ポリイソシアネート(a1)(成分(a1))としては、イソシアネート基を1分子中に2個以上有する従来公知のポリイソシアネート化合物を用いることが出来る。
(Polyisocyanate (a1) (component (a1)))
As polyisocyanate (a1) (component (a1)), a conventionally known polyisocyanate compound having two or more isocyanate groups in one molecule can be used.
成分(a1)としては、具体的には、ジフェニルメタンジイソシアネート[MDI]、トリレンジイソシアネート[TDI]、キシレンジイソシアネート[XDI]、p−フェニレンジイソシアネート[PPDI]、3,3'−ジメチルジフェニル−4,4'−ジイソシアネート[TODI]、ジアニシジンジイソシアネート[DADI]、テトラメチルキシレンジイソシアネート[TMXDI]、ナフタレンジイソシアネート[NDI]等の芳香族ジイソシアネート;
水添ジフェニルメタンジイソシアネート[HMDI]、水添キシレンジイソシアネート[HXDI]、水添トルエンジイソシアネート[HTDI]、イソホロンジイソシアネート[IPDI]、ノルボルナンジイソシアネート等の脂環式ジイソシアネート;
テトラメチレンジイソシアネート、ヘキサメチレンジイソシアネート[HDI]、トリメチルヘキサメチレンジイソシアネート[TMHMDI]等の脂肪族ジイソシアネート等、
トリフェニルメタントリイソシアネート等のトリイソシアネート;
これらのポリイソシアネート化合物のイソシアヌレート体、ビュレット体、アダクト体等の変性体や、ポリメリックイソシアネート等が挙げられるが、かかる例示のみに限定されるものではない。なお、イソシアヌレート体とは、上記ジイソシアネートの三量体をいい、ビュレット体とは、上記ジイソシアネートと水または三級アルコールとの反応物をいい、アダクト体とは、ジイソシアネートとトリメチロールプロパン等のポリオールとの付加体をいう。また、ポリメリックイソシアネートとは、ポリメリックMDI(ポリメチレンポリフェニルポリイソシアネート)をいう。
Specific examples of the component (a1) include diphenylmethane diisocyanate [MDI], tolylene diisocyanate [TDI], xylene diisocyanate [XDI], p-phenylene diisocyanate [PPDI], 3,3′-dimethyldiphenyl-4,4. Aromatic diisocyanates such as' -diisocyanate [TODI], dianisidine diisocyanate [DADI], tetramethylxylene diisocyanate [TMXDI], naphthalene diisocyanate [NDI];
Cycloaliphatic diisocyanates such as hydrogenated diphenylmethane diisocyanate [HMDI], hydrogenated xylene diisocyanate [HXDI], hydrogenated toluene diisocyanate [HTDI], isophorone diisocyanate [IPDI], norbornane diisocyanate;
Aliphatic diisocyanates such as tetramethylene diisocyanate, hexamethylene diisocyanate [HDI], trimethylhexamethylene diisocyanate [TMHMDI], etc.
Triisocyanates such as triphenylmethane triisocyanate;
Examples of these polyisocyanate compounds include isocyanurates, burettes, adducts and the like, and polymeric isocyanates, but are not limited to these examples. The isocyanurate body refers to a trimer of the above diisocyanate, the burette body refers to a reaction product of the diisocyanate and water or a tertiary alcohol, and the adduct body refers to a polyol such as diisocyanate and trimethylolpropane. And adducts. Polymeric isocyanate refers to polymeric MDI (polymethylene polyphenyl polyisocyanate).
上記したポリイソシアネートのなかでも、硬化被膜の耐水性、密着性、耐透水性、耐凍結融解性を向上させる観点から、芳香族ジイソシアネートおよび脂環式ジイソシアネートが好ましく、トリレンジイソシアネート、ジフェニルメタンジイソシアネート、イソホロンジイソシアネートがより好ましい。
この様なポリイソシアネートは、1種単独でも、また2種以上組み合わせて用いてもよい。
Among the above-mentioned polyisocyanates, aromatic diisocyanates and alicyclic diisocyanates are preferable from the viewpoint of improving the water resistance, adhesion, water permeability, and freeze-thaw resistance of the cured film. Tolylene diisocyanate, diphenylmethane diisocyanate, isophorone Diisocyanate is more preferred.
Such polyisocyanates may be used singly or in combination of two or more.
(分子量60以上620以下の低分子ジオール(a2)(成分(a2)))
分子量60以上620以下の低分子ジオール(a2)(成分(a2))としては、水酸基を2個有する従来公知のジオール化合物を用いることが出来る。なお、分子量は、従来公知の方法によって測定可能であり、例えば、ゲル・パーミュエーション・クロマトグラフィー(GPC)により求められる。なお、成分(a2)が、ポリエーテルグリコール等の分子量分布を有する物質である場合、その分子量は、ゲル・パーミュエーション・クロマトグラフィー(GPC)にて測定される重量平均分子量を指す。
成分(a2)の分子量の上限は、好ましくは550、より好ましくは450、さらに好ましくは400、さらにより好ましくは350、特に好ましくは200である。
(Low molecular weight diol (a2) having a molecular weight of 60 or more and 620 or less (component (a2)))
As the low molecular diol (a2) (component (a2)) having a molecular weight of 60 or more and 620 or less, a conventionally known diol compound having two hydroxyl groups can be used. The molecular weight can be measured by a conventionally known method, and is determined by, for example, gel permeation chromatography (GPC). In addition, when the component (a2) is a substance having a molecular weight distribution such as polyether glycol, the molecular weight indicates a weight average molecular weight measured by gel permeation chromatography (GPC).
The upper limit of the molecular weight of component (a2) is preferably 550, more preferably 450, still more preferably 400, even more preferably 350, particularly preferably 200.
成分(a2)としては、具体的には、エチレングリコール、ジエチレングリコール、トリエチレングリコール、プロピレングリコール、ジプロピレングリコール、トリプロピレングリコール、1,4−ブタンジオール、1,3−ブタンジオール,2,3−ブタンジオール、ジブチレングリコール、トリブチレングリコール、1,5−ペンタンジオール、3−メチル−1,5−ペンタンジオール、2,2,4−トリメチル−1,3−ペンタンジオール、ネオペンチルグリコール、1,6−ヘキサンジオール、2−エチル−1,3−ヘキサンジオール、1,8−オクタンジオール、2−メチル−1,8−オクタンジオール、1,9−ノナンジオール、1,10−デカンジオール、その他アルカンジオール等、ポリエチレングリコール、ポリプロピレングリコール、ポリブチレングリコール等のポリエーテルグリコール等の脂肪族ジオール;
シクロヘキサンジオール、シクロヘキサンジメタノール等の脂環式脂肪族ジオール;
キシレングリコール、ビスヒドロキシエトキシベンゼン、ビスヒドロキシエチルテレフタレート、ビスフェノールA等の芳香族ジオール;
ポリカプロラクトンジオールなどのうち、分子量が60〜620の範囲内であるものが挙げられるが、かかる例示のみに限定されるものではない。
Specific examples of the component (a2) include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, 1,4-butanediol, 1,3-butanediol, 2,3- Butanediol, dibutylene glycol, tributylene glycol, 1,5-pentanediol, 3-methyl-1,5-pentanediol, 2,2,4-trimethyl-1,3-pentanediol, neopentyl glycol, 1, 6-hexanediol, 2-ethyl-1,3-hexanediol, 1,8-octanediol, 2-methyl-1,8-octanediol, 1,9-nonanediol, 1,10-decanediol, other alkanes Diol, polyethylene glycol, polypropylene Glycol, aliphatic diols and polyether glycol polybutylene glycol and the like;
Cycloaliphatic aliphatic diols such as cyclohexanediol and cyclohexanedimethanol;
Aromatic diols such as xylene glycol, bishydroxyethoxybenzene, bishydroxyethyl terephthalate, bisphenol A;
Among polycaprolactone diols and the like, those having a molecular weight in the range of 60 to 620 can be mentioned, but are not limited to such examples.
上記したジオールの中でも、硬化塗膜の硬度と柔軟性のバランスを良く保ち、耐水性、密着性、耐透水性、耐凍結融解性、耐ブロッキング性を向上させる観点から、アルカンジオール(C2−C9)、(ポリ)エチレングリコール、(ポリ)プロピレングリコールが好ましい。このようなジオールは、1種単独でも、2種以上組み合わせて用いてもよい。 Among the above diols, alkanediol (C2-C9) is used from the viewpoint of maintaining a good balance between hardness and flexibility of the cured coating film and improving water resistance, adhesion, water permeability, freeze-thaw resistance, and blocking resistance. ), (Poly) ethylene glycol, and (poly) propylene glycol are preferred. Such diols may be used singly or in combination of two or more.
(水酸基を有する(メタ)アクリレート(a3)(成分(a3)))
水酸基を有する(メタ)アクリレート(a3)(成分(a3))としては、水酸基を1個以上有する(メタ)アクリレートを用いることが出来る。
((Meth) acrylate having hydroxyl group (a3) (component (a3)))
As the (meth) acrylate (a3) (component (a3)) having a hydroxyl group, (meth) acrylate having one or more hydroxyl groups can be used.
成分(a3)としては、具体的には、2−ヒドロキシエチル(メタ)アクリレート、2−ヒドロキシプロピル(メタ)アクリレート、3−ヒドロキシプロピル(メタ)アクリレート、2−ヒドロキシブチル(メタ)アクリレート、3−ヒドロキシブチル(メタ)アクリレート、4−ヒドロキシブチル(メタ)アクリレート、ヒドロキシヘキシル(メタ)アクリレート等のアルキル基の炭素数が2〜7であるヒドロキシアルキル(メタ)アクリレート、ポリエチレングリコールモノ(メタ)アクリレート、ポリプロピレングリコールモノ(メタ)アクリレート等の水酸基末端(メタ)アクリレート、N−メチロール(メタ)アクリルアミド、2−ヒドロキシ−3−フェノキシプロピル(メタ)アクリレート、2−ヒドロキシ−3−クロロプロピル(メタ)アクリレート、ε−カプロラクトン単量体を開環重合させて得られるカプロラクトン変性水酸基含有(メタ)アクリレート等が挙げられるが、かかる例示のみに限定されるものではない。 Specific examples of the component (a3) include 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, 3-hydroxypropyl (meth) acrylate, 2-hydroxybutyl (meth) acrylate, 3- Hydroxyalkyl (meth) acrylates having 2 to 7 carbon atoms in the alkyl group, such as hydroxybutyl (meth) acrylate, 4-hydroxybutyl (meth) acrylate, hydroxyhexyl (meth) acrylate, polyethylene glycol mono (meth) acrylate, Hydroxyl-terminated (meth) acrylates such as polypropylene glycol mono (meth) acrylate, N-methylol (meth) acrylamide, 2-hydroxy-3-phenoxypropyl (meth) acrylate, 2-hydroxy-3-chloropropi (Meth) acrylate, although ε- caprolactone monomer ring-opening polymerization was caprolactone-modified hydroxyl group-containing obtained by (meth) acrylate and the like, are not limited only to those exemplified.
上記した水酸基含有(メタ)アクリレートの中でも、硬化塗膜の硬度および硬化性の観点から、2−ヒドロキシエチルアクリレートが好ましい。
このような水酸基含有(メタ)アクリレートは、1種単独でも、2種以上組み合わせて用いてもよい。
Among the hydroxyl group-containing (meth) acrylates described above, 2-hydroxyethyl acrylate is preferable from the viewpoints of hardness and curability of the cured coating film.
Such hydroxyl group-containing (meth) acrylates may be used singly or in combination of two or more.
(成分(a1)〜(a3)の割合)
成分(A)を合成するには、上記ポリイソシアネート(a1)のイソシアネート基のモル数(NCO)と、上記低分子ジオール(a2)の水酸基のモル数および上記水酸基を有する(メタ)アクリレート(a3)の水酸基のモル数の合計(OH)との比が、[OH]/[NCO]=0.8〜1.4の範囲となる比率で反応させることが好ましく、1.0〜1.2の範囲となる比率で反応させることがより好ましい。
(Ratio of components (a1) to (a3))
In order to synthesize the component (A), the number of moles (NCO) of the isocyanate group of the polyisocyanate (a1), the number of moles of the hydroxyl group of the low molecular diol (a2), and the (meth) acrylate (a3 ) In the ratio of the total number of moles of hydroxyl groups (OH) to [OH] / [NCO] = 0.8 to 1.4, preferably 1.0 to 1.2 It is more preferable to make it react by the ratio used as this range.
このようなウレタン(メタ)アクリレート樹脂(A)は、硬化塗膜の耐水性、密着性、耐透水性、耐凍結融解性、耐ブロッキング性をバランス良く向上させることができる。
ウレタン(メタ)アクリレート樹脂(A)は、成分(a1)がジイソシアネートであり、成分(a3)が水酸基を1個有する(メタ)アクリレートである場合、たとえば、式(1)の繰り返し単位からなる構造を含む。成分(A)の分子の末端は、式(1)の*側はたとえば式(2)の構造単位と結合しており、式(1)の**側はたとえば式(3)の構造単位と結合している。上記繰り返し単位は、成分(A)の分子量が上述した範囲となるように繰り返される。
Such a urethane (meth) acrylate resin (A) can improve the water resistance, adhesion, water permeability, freeze-thaw resistance, and blocking resistance of the cured coating film in a well-balanced manner.
When the component (a1) is a diisocyanate and the component (a3) is a (meth) acrylate having one hydroxyl group, the urethane (meth) acrylate resin (A) has, for example, a structure composed of repeating units of the formula (1). including. The terminal of the molecule of the component (A) is bonded to the structural unit of the formula (2) on the * side of the formula (1), for example, and the ** side of the formula (1) is the structural unit of the formula (3), for example. Are connected. The above repeating unit is repeated so that the molecular weight of the component (A) is in the above-described range.
式(1)〜(3)において、X〜Zは2価基である。Xはジオール(HO−X−OH)の脱OH残基であり、Yはジイソシアネート(OCN−Y−NCO)の脱NCO残基であり、Zは水酸基を1個有する(メタ)アクリレート(HO−Z−OC(=O)−CR=CH2)の脱(メタ)アクリロイルオキシおよび脱OH残基である。Rは、水素原子またはメチル基を表す。 In the formulas (1) to (3), X to Z are divalent groups. X is a deOH residue of diol (HO-X-OH), Y is a deNCO residue of diisocyanate (OCN-Y-NCO), and Z is a (meth) acrylate (HO-) having one hydroxyl group. Z-OC (= O) is de (meth) acryloyloxy and de OH residues of -CR = CH 2). R represents a hydrogen atom or a methyl group.
なお、構造単位(1)は成分(a1)および成分(a2)に由来し、構造単位(2)は成分(a1)および成分(a3)に由来し、構造単位(3)は成分(a3)に由来するため、ジイソシアネート(OCN−Y−NCO)は成分(a1)についてのジイソシアネートの例示から選ばれ、ジオール(HO−X−OH)は成分(a2)についての例示から選ばれ、水酸基を1個有する(メタ)アクリレート(HO−Z−OC(=O)−CR=CH2)は成分(a3)についての水酸基を1個有する(メタ)アクリレートの例示から選ばれる。 The structural unit (1) is derived from the component (a1) and the component (a2), the structural unit (2) is derived from the component (a1) and the component (a3), and the structural unit (3) is derived from the component (a3). Therefore, diisocyanate (OCN-Y-NCO) is selected from the examples of diisocyanate for component (a1), diol (HO-X-OH) is selected from the examples for component (a2), and the hydroxyl group is 1 The (meth) acrylate having one (HO—Z—OC (═O) —CR═CH 2 ) is selected from the examples of (meth) acrylate having one hydroxyl group for the component (a3).
<ポリイソシアネート(B)(成分(B))>
ポリイソシアネート(B)(成分(B))は、上記成分(a1)と同一であっても異なっていてもよい。
<Polyisocyanate (B) (Component (B))>
The polyisocyanate (B) (component (B)) may be the same as or different from the component (a1).
ポリイソシアネート(B)のNCO基は、シーラー組成物が硬化して硬化被膜となる際に、基材や空気中の水分と反応しウレア結合を生成して基材を強化すると考えられる。これにより、本発明のシーラー組成物から得られる硬化被膜においては密着性、耐水性、耐透水性、耐凍結融解性が向上すると考えられる。 It is considered that the NCO group of the polyisocyanate (B) reacts with moisture in the substrate or air when the sealer composition is cured to form a cured film, thereby forming a urea bond to strengthen the substrate. Thereby, in the cured film obtained from the sealer composition of this invention, it is thought that adhesiveness, water resistance, water permeability resistance, and freeze-thaw resistance improve.
また、寒冷地において建材を構造物の壁面に用いる際、室内と外気の気温差によって、建材裏面が特に結露しやすく、その水分が基材に滲み込み凍結と融解を繰り返すことで、基材劣化が促進するという問題がある。これに対して、本発明のようにポリイソシアネート(B)を含むシーラー組成物を用いて基材に硬化被膜を形成させると、もし水分が基材に滲み込み、凍結と融解を繰り返して基材にひび割れが発生したとしても、硬化被膜がひび割れに追従するため、基材の劣化を抑制することができる(耐透水性、耐凍結融解性に優れる)と考えられる。 In addition, when building materials are used on the walls of structures in cold regions, the backside of the building materials is particularly susceptible to condensation due to the temperature difference between the indoor and outdoor air. There is a problem that promotes. On the other hand, if a cured film is formed on a base material using a sealer composition containing polyisocyanate (B) as in the present invention, moisture will permeate the base material and the base material is repeatedly frozen and thawed. Even if cracks occur, the cured coating follows the cracks, and therefore it is considered that the deterioration of the base material can be suppressed (excellent in water permeability resistance and freeze-thaw resistance).
ポリイソシアネート(B)としては、具体的には成分(a1)の説明で記載したものと同様のものが挙げられる。
前述のポリイソシアネートのなかでも、硬化被膜の密着性、耐水性、耐透水性、耐凍結融解性、塗装作業性、シーラー組成物のポットライフの観点から、トリレンジイソシアネート、ヘキサメチレンジイソシアネート、キシレンジイソシアネート、水添ジフェニルメタンジイソシアネートや、これらのポリイソシアネートのイソシアヌレート体、ビュレット体、アダクト体が好ましい。
この様なポリイソシアネートは、1種単独でも、また2種以上組み合わせて用いてもよい。
Specific examples of the polyisocyanate (B) include those described in the description of the component (a1).
Among the above-mentioned polyisocyanates, tolylene diisocyanate, hexamethylene diisocyanate, xylene diisocyanate from the viewpoints of adhesion of cured film, water resistance, water permeability resistance, freeze-thaw resistance, coating workability, and pot life of sealer composition. Hydrogenated diphenylmethane diisocyanate and isocyanurates, burettes, and adducts of these polyisocyanates are preferred.
Such polyisocyanates may be used singly or in combination of two or more.
また、成分(B)としては、溶剤との混合物として市販されているポリイソシアネートを用いてもよい。低VOC化のため、本発明のシーラー組成物を無溶剤型とする観点からは、溶剤との混合物となっていない成分(B)を用いることが好ましい。 Moreover, as a component (B), you may use the polyisocyanate marketed as a mixture with a solvent. In order to reduce VOC, it is preferable to use the component (B) that is not a mixture with a solvent from the viewpoint of making the sealer composition of the present invention a solvent-free type.
ポリイソシアネート(B)は、成分(A)100重量部に対して、好ましくは0.1〜400重量部、より好ましくは1〜300重量部の量でシーラー組成物中に含まれていることが望ましい。 The polyisocyanate (B) is preferably contained in the sealer composition in an amount of 0.1 to 400 parts by weight, more preferably 1 to 300 parts by weight with respect to 100 parts by weight of the component (A). desirable.
<光重合開始剤(C)(成分(C))>
光重合開始剤(C)(成分(C))としては、従来公知のものを用いることができる。
成分(C)としては、具体的には、ベンゾイン、ベンゾインメチルエーテル、ベンゾインエチルエーテル、ベンゾインイソプロピルエーテル、ベンゾインイソブチルエーテル等のベンゾイン系光重合開始剤;
ベンジルジメチルケタール(別名、2,2−ジメトキシ−2−フェニルアセトフェノン)、ジエトキシアセトフェノン、4−フェノキシジクロロアセトフェノン、4−t−ブチル- ジクロロアセトフェノン、4−t−ブチル−トリクロロアセトフェノン、2−ヒドロキシ−2−メチル−1−フェニルプロパン−1−オン、1−(4−イソプロピルフェニル)−2−ヒドロキシ−2−メチルプロパン−1−オン、1−(4−ドデシルフェニル)−2−ヒドロキシ−2−メチルプロパン−1−オン、4−(2−ヒドロキシエトキシ)−フェニル(2−ヒドロキシ−2−プロピル)ケトン、1−ヒドロキシシクロヘキシルフェニルケトン、2−メチル−1−[4−(メチルチオ)フェニル]−2−モルホリノプロパン−1等のアセトフェノン系光重合開始剤;
ベンゾフェノン、ベンゾイル安息香酸、ベンゾイル安息香酸メチル、4−フェニルベンゾフェノン、ヒドロキシベンゾフェノン、アクリル化ベンゾフェノン、4−ベンゾイル−4'−メチルジフェニルサルファイド、3,3'−ジメチル−4−メトキシベンゾフェノン等のベンゾフェノン系光重合開始剤;
チオキサントン、2−クロルチオキサントン、2−メチルチオキサントン、2,4−ジメチルチオキサントン、イソプロピルチオキサントン、2,4−ジクロロチオキサントン、2,4−ジエチルチオキサントン、2,4−ジイソプロピルチオキサントン等のチオキサントン系光重合開始剤などが挙げられる。
このような光重合開始剤(C)は、1種単独でも、また2種以上組み合わせて用いてもよい。
<Photopolymerization initiator (C) (component (C))>
A conventionally well-known thing can be used as a photoinitiator (C) (component (C)).
Specific examples of the component (C) include benzoin photopolymerization initiators such as benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, and benzoin isobutyl ether;
Benzyldimethyl ketal (also known as 2,2-dimethoxy-2-phenylacetophenone), diethoxyacetophenone, 4-phenoxydichloroacetophenone, 4-t-butyl-dichloroacetophenone, 4-t-butyl-trichloroacetophenone, 2-hydroxy- 2-methyl-1-phenylpropan-1-one, 1- (4-isopropylphenyl) -2-hydroxy-2-methylpropan-1-one, 1- (4-dodecylphenyl) -2-hydroxy-2- Methylpropan-1-one, 4- (2-hydroxyethoxy) -phenyl (2-hydroxy-2-propyl) ketone, 1-hydroxycyclohexylphenylketone, 2-methyl-1- [4- (methylthio) phenyl]- Acetophenone-based light weight such as 2-morpholinopropane-1 Initiator;
Benzophenone light such as benzophenone, benzoylbenzoic acid, methyl benzoylbenzoate, 4-phenylbenzophenone, hydroxybenzophenone, acrylated benzophenone, 4-benzoyl-4'-methyldiphenyl sulfide, 3,3'-dimethyl-4-methoxybenzophenone A polymerization initiator;
Thioxanthone photopolymerization initiators such as thioxanthone, 2-chlorothioxanthone, 2-methylthioxanthone, 2,4-dimethylthioxanthone, isopropylthioxanthone, 2,4-dichlorothioxanthone, 2,4-diethylthioxanthone, 2,4-diisopropylthioxanthone Etc.
Such photopolymerization initiators (C) may be used singly or in combination of two or more.
上記のような光重合開始剤(C)は、成分(A)100重量部に対して、好ましくは0.1〜30重量部、より好ましくは1〜20重量部の量でシーラー組成物中に含まれていることが望ましい。 The photopolymerization initiator (C) as described above is preferably 0.1 to 30 parts by weight, more preferably 1 to 20 parts by weight in the sealer composition with respect to 100 parts by weight of the component (A). It is desirable that it be included.
<光重合性不飽和基を有するモノマー(D)(成分(D))>
本発明の建材用エネルギー線硬化型樹脂組成物は、更に光重合性不飽和基を有するモノマー(D)(成分(D))を含有していてもよい。成分(D)は、反応性希釈剤としての役割を有しており、シーラー組成物の粘度を下げ、施工性を向上させることができる。
<Monomer (D) having photopolymerizable unsaturated group (component (D))>
The energy beam curable resin composition for building materials of the present invention may further contain a monomer (D) (component (D)) having a photopolymerizable unsaturated group. Component (D) has a role as a reactive diluent, can lower the viscosity of the sealer composition, and improve the workability.
成分(D)としては、たとえば、トリプロピレングリコールジアクリレート、アクリロイルモルフォリン、ペンタエリスリトールトリアクリレート、ペンタエリスリトールテトラアクリレート、ジペンタエリスリトールペンタアクリレート、ジペンタエリスリトールヘキサアクリレート等が挙げられるが、かかる例示のみに限定されるものではない。 Examples of the component (D) include tripropylene glycol diacrylate, acryloyl morpholine, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, and the like. It is not limited.
成分(D)は、成分(A)を合成する際に、前述の(a1)〜(a3)成分に加えられていてもよい。その場合は、水酸基を有しない(メタ)アクリレートを選択して用いる。いいかえると、水酸基を有しない成分(D)の場合は、成分(A)の合成後に他の成分とともに配合してもよいが、成分(A)を合成する際に、前述の成分(a1)〜(a3)に配合してもよい。一方、水酸基を有する成分(D)の場合は、成分(A)の合成後に配合することが望ましい。 Component (D) may be added to the aforementioned components (a1) to (a3) when synthesizing component (A). In that case, (meth) acrylate having no hydroxyl group is selected and used. In other words, in the case of the component (D) having no hydroxyl group, it may be blended with other components after the synthesis of the component (A), but when synthesizing the component (A), the components (a1) to You may mix | blend with (a3). On the other hand, in the case of the component (D) having a hydroxyl group, it is desirable to blend after the synthesis of the component (A).
上記した光重合性不飽和基を有するモノマーの中でも、粘度調整(ハンドリング)と硬化性の観点から、トリプロピレングリコールジアクリレート、アクリロイルモルフォリン、ペンタエリスリトールトリアクリレート等の3官能以下のモノマーが好ましい。 Among the above-mentioned monomers having a photopolymerizable unsaturated group, a trifunctional or less functional monomer such as tripropylene glycol diacrylate, acryloyl morpholine, pentaerythritol triacrylate or the like is preferable from the viewpoint of viscosity adjustment (handling) and curability.
このような光重合性不飽和基を有するモノマー(D)は、1種単独でも、2種以上組み合わせて用いてもよい。
上記のような光重合性不飽和基を有するモノマー(D)を用いる場合は、成分(A)100重量部に対して、好ましくは0重量部を超え180重量部以下、より好ましくは0重量部を超え100重量部以下の量でシーラー組成物中に配合することが望ましい。
The monomer (D) having such a photopolymerizable unsaturated group may be used alone or in combination of two or more.
When the monomer (D) having a photopolymerizable unsaturated group as described above is used, it is preferably more than 0 parts by weight and 180 parts by weight or less, more preferably 0 parts by weight with respect to 100 parts by weight of the component (A). It is desirable to mix in the sealer composition in an amount of more than 100 parts by weight and less.
<その他の成分>
本発明の建材用シーラー組成物中には、上記成分(A)〜(D)の他に、さらに必要に応じて、体質顔料、着色顔料、分散剤、沈降防止剤、レベリング剤、消泡剤、重合禁止剤、溶剤などを用いることができる。
<Other ingredients>
In the sealer composition for building materials of the present invention, in addition to the above components (A) to (D), if necessary, extender pigments, color pigments, dispersants, anti-settling agents, leveling agents, antifoaming agents A polymerization inhibitor, a solvent, or the like can be used.
(体質顔料、着色顔料)
体質顔料は、充填剤としての役割も有しており、タルク、ネフェリン閃長岩、炭酸カルシウム、クレー、シリカ、マイカ等を用いることができ、着色顔料としては、酸化チタン、カーボンブラック、酸化鉄(弁柄)等を用いることができるが、これに限定されるものではない。このような体質顔料および着色顔料は、それぞれ1種単独でも、2種以上組み合わせて用いてもよい。
(External pigment, colored pigment)
The extender pigment also has a role as a filler, and talc, nepheline syenite, calcium carbonate, clay, silica, mica, and the like can be used. Color pigments include titanium oxide, carbon black, iron oxide ( Petals) or the like can be used, but is not limited thereto. Such extender pigments and colored pigments may be used singly or in combination of two or more.
これら体質顔料および着色顔料は、下地を隠ぺいする役割のほか、硬化被膜の耐透水性を向上させる効果を有している。
体質顔料および着色顔料を用いる場合は、成分(A)100重量部に対して、好ましくは0重量部を超え180重量部以下、より好ましくは0重量部を超え120重量部以下の量でシーラー組成物中に配合することが望ましい。
These extender pigments and colored pigments have an effect of improving the water permeability of the cured film, in addition to the role of hiding the base.
When the extender pigment and the color pigment are used, the sealer composition is preferably used in an amount of more than 0 part by weight and 180 parts by weight or less, more preferably more than 0 part by weight and 120 parts by weight or less with respect to 100 parts by weight of component (A) It is desirable to mix in the product.
(重合禁止剤など)
重合禁止剤としては、例えば、ハイドロキノン、ハイドロキノンモノメチルエーテル、ベンゾキノン、p−tert−ブチルカルビトール、2,6−ジ−tert−ブチル−4−メチルフェノール等が挙げられる。
(Polymerization inhibitors, etc.)
Examples of the polymerization inhibitor include hydroquinone, hydroquinone monomethyl ether, benzoquinone, p-tert-butyl carbitol, 2,6-di-tert-butyl-4-methylphenol, and the like.
分散剤、沈降防止剤、レベリング剤、消泡剤、重合禁止剤は、それぞれ1種単独でも、2種以上組み合わせて用いてもよい。
分散剤、沈降防止剤、レベリング剤、消泡剤、重合禁止剤を用いる場合は、それぞれ成分(A)100重量部に対して、好ましくは0重量部を超え4重量部以下、より好ましくは0重量部を超え0.5重量部以下の量でシーラー組成物中に配合することが望ましい。
Each of the dispersant, the anti-settling agent, the leveling agent, the antifoaming agent, and the polymerization inhibitor may be used alone or in combination of two or more.
When a dispersant, an anti-settling agent, a leveling agent, an antifoaming agent, or a polymerization inhibitor is used, it is preferably more than 0 parts by weight and 4 parts by weight or less, more preferably 0 with respect to 100 parts by weight of component (A). It is desirable to mix in the sealer composition in an amount of more than 0.5 parts by weight and less than 0.5 parts by weight.
(溶剤)
溶剤としては、特に限定されないが、たとえば酢酸エチル、酢酸ブチル、キシレン、メトキシプロピルアセテート等が挙げられる。このような溶剤は、1種単独でも、2種以上組み合わせて用いてもよい。
(solvent)
Although it does not specifically limit as a solvent, For example, ethyl acetate, butyl acetate, xylene, methoxypropyl acetate, etc. are mentioned. Such solvents may be used singly or in combination of two or more.
溶剤は、上述のように成分(B)の混合物としてシーラー組成物に配合されてもよい。
溶剤を用いる場合は、成分(A)100重量部に対して、好ましくは0重量部を超え100重量部以下、より好ましくは0重量部を超え20重量部以下の量でシーラー組成物中に配合することが望ましい。
なお、低VOC化のため、本発明のシーラー組成物を無溶剤型とする観点からは、溶剤とを用いないことが好ましい。
A solvent may be mix | blended with a sealer composition as a mixture of a component (B) as mentioned above.
When a solvent is used, it is preferably incorporated in the sealer composition in an amount of more than 0 parts by weight and 100 parts by weight or less, more preferably more than 0 parts by weight and 20 parts by weight or less with respect to 100 parts by weight of the component (A). It is desirable to do.
In order to reduce the VOC, it is preferable not to use a solvent from the viewpoint of making the sealer composition of the present invention a solvent-free type.
<粘度>
本発明の建材用シーラー組成物の粘度は特に限定されないが、塗装作業性の観点から、組成物の温度20℃において、通常100〜15,000mPa・sの範囲であることが好ましい。粘度はB型粘度計によって求められる。
<Viscosity>
Although the viscosity of the sealer composition for building materials of the present invention is not particularly limited, from the viewpoint of coating workability, it is usually preferably in the range of 100 to 15,000 mPa · s at a composition temperature of 20 ° C. The viscosity is determined by a B-type viscometer.
<建材用エネルギー線硬化型シーラー組成物の調製方法>
本実施形態の建材用エネルギー線硬化型シーラー組成物は、ウレタン(メタ)アクリレート樹脂(A)、ポリイソシアネート(B)、光重合開始剤(C)および必要に応じて光重合性不飽和基を有するモノマー(D)、その他の成分を添加して混合することにより調製できる。
<Method for preparing energy ray curable sealer composition for building material>
The building material energy ray curable sealer composition of this embodiment comprises a urethane (meth) acrylate resin (A), a polyisocyanate (B), a photopolymerization initiator (C), and a photopolymerizable unsaturated group as required. It can be prepared by adding and mixing the monomer (D) having other components.
また、シーラー組成物の可使時間(ポットライフ)の観点より、ポリイソシアネート(B)以外の成分を混合して樹脂組成物を調製した後、塗装時に成分(B)を混合してシーラー組成物とすることが望ましい。
上述した建材用エネルギー線硬化型シーラー組成物は、特に無機建材用エネルギー線硬化型シーラー組成物として好適に用いられる。
In addition, from the viewpoint of pot life of the sealer composition, a component other than the polyisocyanate (B) is mixed to prepare a resin composition, and then the component (B) is mixed during coating to prepare a sealer composition. Is desirable.
The energy beam curable sealer composition for building materials described above is particularly suitably used as an energy beam curable sealer composition for inorganic building materials.
[被膜付き建材およびその製造方法]
本発明の被膜付き建材は、基材表面の少なくとも一部に、上述した建材用エネルギー線硬化型シーラー組成物から形成された硬化被膜を有する。本実施形態に係る被膜付き建材では、上述した建材用エネルギー線硬化型シーラー組成物を基材表面の少なくとも一部に塗布し、硬化させて硬化被膜を形成する。すなわち、本発明の被膜付き建材の製造方法は、基材の少なくとも片面に、上述した建材用エネルギー線硬化型シーラー組成物を塗装した後、当該塗装面にエネルギー線を照射して該組成物を硬化させ、硬化被膜を形成させることを特徴とする。
[Building material with coating and method for producing the same]
The building material with a film of the present invention has a cured film formed from the above-described energy ray curable sealer composition for building material on at least a part of the surface of the base material. In the building material with a film according to the present embodiment, the energy beam curable sealer composition for building material described above is applied to at least a part of the surface of the base material and cured to form a cured film. That is, in the method for producing a coated material according to the present invention, at least one surface of a base material is coated with the above-mentioned energy ray curable sealer composition for building materials, and then the composition surface is irradiated with energy rays. It hardens | cures and forms a hardened film.
本発明の被膜付き建材ならびに本発明の被膜付き建材の製造方法で得られた被膜付き建材は、硬化被膜を基材表面の少なくとも一部に有していればよい。なお、ここでいう表面とは、基材の主面または端面を指し、好ましくは主面である。主面とは、板状基材においては、基材の前面または背面(裏面)を指す。
硬化被膜の膜厚は、特に限定されないが、3〜60μmが好ましい。
The building material with a coating obtained by the method for producing a building material with a coating according to the present invention and the building material with a coating according to the present invention only needs to have a cured coating on at least a part of the substrate surface. In addition, the surface here refers to the main surface or end surface of a base material, Preferably it is a main surface. A main surface refers to the front surface or the back surface (back surface) of a base material in a plate-shaped base material.
Although the film thickness of a cured film is not specifically limited, 3-60 micrometers is preferable.
<基材>
基材としては、珪酸カルシウム板、スレート板、繊維セメント板、軽量コンクリート板、モルタル板、石膏板、石材、ガラス、タイル、瓦、レンガ、窯業系サイディング材等の無機基材、金属系サイディング材、鋼、ステンレス、アルミ等の金属系基材、合成樹脂、木材、紙等の有機質基材およびこれら複数の基材から得られる複合基材が挙げられる。本発明では、基材として、従来公知の建材がいずれも好適に用いられ、無機建材がより好適に用いられる。
<Base material>
Base materials include calcium silicate board, slate board, fiber cement board, lightweight concrete board, mortar board, gypsum board, stone, glass, tile, tile, brick, ceramic siding material, etc., metal siding material Metal base materials such as steel, stainless steel and aluminum, organic base materials such as synthetic resin, wood and paper, and composite base materials obtained from these plural base materials. In the present invention, any conventionally known building materials are suitably used as the base material, and inorganic building materials are more suitably used.
<塗装方法>
建材用シーラー組成物の塗装方法としては従来公知の方法を用いることができ、例えば、スポンジロールコーター、ナチュラルロールコーター、リバースロールコーター、カーテンフローコーター、ナイフコーター、ダイコーター、エアースプレー、エアレススプレー、ローラー、刷毛塗り、浸漬などが挙げられ、適宜選択することができる。中でも、スポンジロールコーターを用いると、基材への塗布量を多くすることができ、耐水性、耐透水性などの塗膜性能が向上するため好ましい。
シーラー組成物の塗布量は、通常1.0〜220g/m2であり、複数回シーラー組成物を塗り重ねてもよい。
<Coating method>
Conventionally known methods can be used as a method for coating the sealer composition for building materials, such as sponge roll coater, natural roll coater, reverse roll coater, curtain flow coater, knife coater, die coater, air spray, airless spray, A roller, brush application, immersion, etc. are mentioned, It can select suitably. Among these, the use of a sponge roll coater is preferable because the coating amount on the substrate can be increased and the coating performance such as water resistance and water permeability is improved.
The application amount of the sealer composition is usually 1.0 to 220 g / m 2 , and the sealer composition may be applied a plurality of times.
<エネルギー線照射>
本発明に係る建材用シーラー組成物は、基材に塗装された後、エネルギー線照射により硬化することができる。エネルギー線としては、遠紫外線、紫外線、近紫外線、赤外線などの光線に加えて、X線、γ線などの電磁波、電子線、プロトン線、中性子線などが挙げられ、中でも、硬化速度、照射装置の入手のし易さ、価格などの面から、紫外線が好ましい。
<Energy beam irradiation>
The sealer composition for building materials according to the present invention can be cured by irradiation with energy rays after being coated on a substrate. Examples of energy rays include electromagnetic waves such as X-rays and γ rays, electron rays, proton rays, neutron rays, etc., in addition to rays such as far ultraviolet rays, ultraviolet rays, near ultraviolet rays, and infrared rays. From the viewpoint of easy availability and price, ultraviolet rays are preferable.
エネルギー線で硬化させる方法としては、75〜2,600nm波長域の光を発する高圧水銀ランプ、メタルハライドランプ、キセノンランプ、ケミカルランプ等を用いて、30〜3,000mJ/cm2ほど照射する方法などが挙げられる。 As a method of curing with energy rays, a method of irradiating about 30 to 3,000 mJ / cm 2 using a high pressure mercury lamp, a metal halide lamp, a xenon lamp, a chemical lamp or the like that emits light in a wavelength range of 75 to 2,600 nm. Is mentioned.
<他のシーラー組成物、下塗り塗料および上塗り塗料>
本発明のシーラー組成物を塗装、硬化させ硬化被膜を形成した後、必要に応じて他のシーラー組成物、下塗り塗料、上塗り塗料などを適宜選択して塗装することができる。また、本発明のシーラー組成物を、他のシーラー組成物から形成された硬化被膜を有する建材上に塗装してもよい。
<Other sealer compositions, base coats and top coats>
After the sealer composition of the present invention is applied and cured to form a cured film, other sealer compositions, undercoat paints, topcoat paints and the like can be appropriately selected and applied as necessary. Moreover, you may paint the sealer composition of this invention on the building material which has the cured film formed from the other sealer composition.
このようにして得られた被膜付き建材(たとえば被膜付き無機建材)は、上述した建材用エネルギー線硬化型シーラー組成物から形成された硬化被膜を有するため、密着性、耐水性、耐透水性、耐凍結融解性、耐ブロッキング性に優れる。 The building material with a coating thus obtained (for example, an inorganic building material with a coating) has a cured coating formed from the above-mentioned energy ray curable sealer composition for building materials, and therefore has adhesion, water resistance, water permeability resistance, Excellent freeze-thaw resistance and blocking resistance.
[実施例]
以下、実施例に基づいて本発明を詳細に説明するが、本発明はこれらの実施例に限定されるものではない。
以下にウレタン(メタ)アクリレート樹脂(A)の合成例について説明する。
[Example]
EXAMPLES Hereinafter, although this invention is demonstrated in detail based on an Example, this invention is not limited to these Examples.
The synthesis example of urethane (meth) acrylate resin (A) is demonstrated below.
<合成例1>
撹拌機、温度計、冷却管及び空気ガス導入管を装備した反応容器に空気ガスを導入させた後、この反応容器に成分(a2)として、1,4−ブタンジオール(三菱化学(株)製、分子量90) 45.0重量部と、成分(a3)として、2−ヒドロキシエチルアクリレート(分子量116) 121.8重量部と、成分(D)として、TPGDA(ダイセル・オルネクス(株)製、トリプロピレングリコールジアクリレート、分子量300) 85.2重量部と、ハイドロキノンモノメチルエーテル 0.1重量部及びグレックTL(DIC社製、ジブチル錫ジラウレート) 0.2重量部を仕込み、75℃に昇温後75〜80℃に保温し、成分(a1)として、コロネートT−80(東ソー(株)製、トリレンジイソシアネート、分子量174)174.0重量部を3時間で均一に滴下し反応させた。
<Synthesis Example 1>
After introducing air gas into a reaction vessel equipped with a stirrer, thermometer, cooling tube and air gas introduction tube, 1,4-butanediol (manufactured by Mitsubishi Chemical Corporation) was used as a component (a2) in the reaction vessel. , Molecular weight 90) 45.0 parts by weight, as component (a3), 2-hydroxyethyl acrylate (molecular weight 116) 121.8 parts by weight, and as component (D), TPGDA (manufactured by Daicel Ornex Co., Ltd.) Propylene glycol diacrylate, molecular weight 300) 85.2 parts by weight, hydroquinone monomethyl ether 0.1 part by weight and GREC TL (manufactured by DIC, dibutyltin dilaurate) 0.2 part by weight were charged, and the temperature was raised to 75 ° C. Keep at -80 ° C, and as component (a1), Coronate T-80 (manufactured by Tosoh Corporation, tolylene diisocyanate, molecular weight 174) 74.0 parts by weight evenly added dropwise to react for 3 hours.
滴下完了後約2時間反応を継続し、IR測定によりイソシアネートが消失したことを確認して反応を終了し、固形分が約100%のウレタンアクリレート樹脂を含む樹脂組成物を得た。その内、反応性希釈剤である成分(D)を除いたウレタンアクリレート樹脂(A)は、89.7重量%であった。ウレタンアクリレート樹脂(A)のゲル・パーミュエーション・クロマトグラフィー(GPC)にて測定された重量平均分子量は979であった。測定条件は以下の通りである。
装置:東ソー(株)製HLC−8220GPC
カラム:東ソー(株)製Super H2000+H4000(各内径6mm 長さ15cm)
展開溶媒:THF
カラム恒温槽温度:40℃
流速:0.5ml/min
対照:単分散ポリスチレン
The reaction was continued for about 2 hours after completion of the dropping, and the reaction was terminated after confirming that the isocyanate had disappeared by IR measurement, and a resin composition containing a urethane acrylate resin having a solid content of about 100% was obtained. Among them, the urethane acrylate resin (A) excluding the component (D) as the reactive diluent was 89.7% by weight. The weight average molecular weight measured by gel permeation chromatography (GPC) of the urethane acrylate resin (A) was 979. The measurement conditions are as follows.
Equipment: HLC-8220GPC manufactured by Tosoh Corporation
Column: Super H2000 + H4000 manufactured by Tosoh Corporation (each inner diameter 6 mm, length 15 cm)
Developing solvent: THF
Column bath temperature: 40 ° C
Flow rate: 0.5 ml / min
Control: monodisperse polystyrene
また、成分(a1)のイソシアネート基のモル数(NCO)と、成分(a2)の水酸基のモル数および成分(a3)の水酸基のモル数の合計(OH)の比は、[OH]/[NCO]=1.025であった。 The ratio of the number of moles of isocyanate groups (NCO) of component (a1) to the total number of moles of hydroxyl groups of component (a2) and the number of moles of hydroxyl groups of component (a3) is [OH] / [ NCO] = 1.025.
<合成例2>
撹拌機、温度計、冷却管及び空気ガス導入管を装備した反応容器に空気ガスを導入させた後、この反応容器に成分(a2)として、エチレングリコール(三菱化学(株)製、分子量62) 31.0重量部と、成分(a3)として、2−ヒドロキシエチルアクリレート(分子量116) 121.8重量部と、成分(D)として、TPGDA(ダイセル・オルネクス(株)製、トリプロピレングリコールジアクリレート、分子量300) 81.7重量部と、ハイドロキノンモノメチルエーテル 0.1重量部及びグレックTL(DIC社製、ジブチル錫ジラウレート) 0.2重量部を仕込み、75℃に昇温後75〜80℃に保温し、成分(a1)として、コロネートT−80(東ソー(株)製、トリレンジイソシアネート、分子量174)174.0重量部を3時間で均一に滴下し反応させた。
<Synthesis Example 2>
After introducing air gas into a reaction vessel equipped with a stirrer, thermometer, cooling tube and air gas introduction tube, ethylene glycol (Mitsubishi Chemical Co., Ltd., molecular weight 62) was used as the component (a2) in this reaction vessel. 31.0 parts by weight, as component (a3), 121.8 parts by weight of 2-hydroxyethyl acrylate (molecular weight 116), and as component (D), TPGDA (manufactured by Daicel Ornex Co., Ltd., tripropylene glycol diacrylate) , Molecular weight 300) 81.7 parts by weight, 0.1 part by weight of hydroquinone monomethyl ether and 0.2 part by weight of GREC TL (DIC, dibutyltin dilaurate) were charged, heated to 75 ° C. and then heated to 75-80 ° C. Insulate, and as component (a1), Coronate T-80 (manufactured by Tosoh Corporation, tolylene diisocyanate, molecular weight 174) 17 .0 parts by weight evenly added dropwise to react for 3 hours.
滴下完了後約2時間反応を継続し、IR測定によりイソシアネートが消失したことを確認して反応を終了し、固形分が約100%のウレタンアクリレート樹脂を含む樹脂組成物を得た。その内、反応性希釈剤である成分(D)を除いたウレタンアクリレート樹脂(A)は、80.0重量%であった。ウレタンアクリレート樹脂(A)のゲル・パーミュエーション・クロマトグラフィー(GPC)にて測定された重量平均分子量は780であった。測定条件は合成例1と同じである。 The reaction was continued for about 2 hours after completion of the dropping, and the reaction was terminated after confirming that the isocyanate had disappeared by IR measurement, and a resin composition containing a urethane acrylate resin having a solid content of about 100% was obtained. Among them, the urethane acrylate resin (A) excluding the component (D) which is a reactive diluent was 80.0% by weight. The weight average molecular weight of the urethane acrylate resin (A) measured by gel permeation chromatography (GPC) was 780. The measurement conditions are the same as those in Synthesis Example 1.
また、成分(a1)のイソシアネート基のモル数(NCO)と、成分(a2)の水酸基のモル数および成分(a3)の水酸基のモル数の合計(OH)の比は、[OH]/[NCO]=1.0であった。 The ratio of the number of moles of isocyanate groups (NCO) of component (a1) to the total number of moles of hydroxyl groups of component (a2) and the number of moles of hydroxyl groups of component (a3) is [OH] / [ NCO] = 1.0.
<合成例3>
撹拌機、温度計、冷却管及び空気ガス導入管を装備した反応容器に空気ガスを導入させた後、この反応容器に成分(a2)として、サンニックスPP−400(三洋化成工業(株)製、ポリプロピレングリコール、分子量400) 204.0重量部と、成分(a3)として、2−ヒドロキシエチルアクリレート(分子量116) 121.8重量部と、成分(D)として、TPGDA(ダイセル・オルネクス(株)製、トリプロピレングリコールジアクリレート、分子量300) 124.8重量部と、ハイドロキノンモノメチルエーテル 0.3重量部及びグレックTL(DIC社製、ジブチル錫ジラウレート) 0.3重量部を仕込み、75℃に昇温後75〜80℃に保温し、成分(a1)として、コロネートT−80(東ソー(株)製、トリレンジイソシアネート、分子量174)174.0重量部を3時間で均一に滴下し反応させた。
<Synthesis Example 3>
After introducing air gas into a reaction vessel equipped with a stirrer, a thermometer, a cooling pipe and an air gas introduction pipe, as a component (a2) in this reaction vessel, Sanix PP-400 (manufactured by Sanyo Chemical Industries, Ltd.) , Polypropylene glycol, molecular weight 400) 204.0 parts by weight, component (a3) as 2-hydroxyethyl acrylate (molecular weight 116) 121.8 parts by weight, and component (D) as TPGDA (Daicel Ornex Co., Ltd.) Made of tripropylene glycol diacrylate, molecular weight 300) 124.8 parts by weight, 0.3 part by weight of hydroquinone monomethyl ether and 0.3 part by weight of GREC TL (DIC, dibutyltin dilaurate) After warming, the mixture was kept at 75-80 ° C., and as component (a1), Coronate T-80 (manufactured by Tosoh Corporation Diisocyanate, molecular weight 174) and 174.0 parts by weight was uniformly added dropwise to react for 3 hours.
滴下完了後約2時間反応を継続し、IR測定によりイソシアネートが消失したことを確認して反応を終了し、固形分が約100%のウレタンアクリレート樹脂を含む樹脂組成物を得た。その内、反応性希釈剤である成分(D)を除いたウレタンアクリレート樹脂(A)は、80.0重量%であった。ウレタンアクリレート樹脂(A)のゲル・パーミュエーション・クロマトグラフィー(GPC)にて測定された重量平均分子量は1,383であった。測定条件は合成例1と同じである。 The reaction was continued for about 2 hours after completion of the dropping, and the reaction was terminated after confirming that the isocyanate had disappeared by IR measurement, and a resin composition containing a urethane acrylate resin having a solid content of about 100% was obtained. Among them, the urethane acrylate resin (A) excluding the component (D) which is a reactive diluent was 80.0% by weight. The weight average molecular weight of the urethane acrylate resin (A) measured by gel permeation chromatography (GPC) was 1,383. The measurement conditions are the same as those in Synthesis Example 1.
また、成分(a1)のイソシアネート基のモル数(NCO)と、成分(a2)の水酸基のモル数および成分(a3)の水酸基のモル数の合計(OH)の比は、[OH]/[NCO]=1.0であった。 The ratio of the number of moles of isocyanate groups (NCO) of component (a1) to the total number of moles of hydroxyl groups of component (a2) and the number of moles of hydroxyl groups of component (a3) is [OH] / [ NCO] = 1.0.
<比較合成例1>
撹拌機、温度計、冷却管及び空気ガス導入管を装備した反応容器に空気ガスを導入させた後、この反応容器に成分(a2)の比較として、PTG−650(BASF社製、ポリテトラメチレングリコール、分子量650) 325重量部と、成分(a3)として、2−ヒドロキシエチルアクリレート 121.8重量部と、成分(D)として、TPGDA 155.2重量部と、ハイドロキノンモノメチルエーテル 0.2重量部及びグレックTL 0.3重量部を仕込み、75℃に昇温後75〜80℃に保温し、成分(a1)として、コロネートT−80 174.0重量部を3時間で均一に滴下し反応させた。
<Comparative Synthesis Example 1>
After introducing air gas into a reaction vessel equipped with a stirrer, a thermometer, a cooling tube and an air gas introduction tube, PTG-650 (manufactured by BASF, polytetramethylene was used as a comparison of the component (a2). Glycol, molecular weight 650) 325 parts by weight, as component (a3), 121.8 parts by weight of 2-hydroxyethyl acrylate, as component (D), 155.2 parts by weight of TPGDA, and 0.2 parts by weight of hydroquinone monomethyl ether And 0.3 g by weight of GREC TL, heated to 75 ° C. and then kept at 75 to 80 ° C., and as a component (a1), 174.0 parts by weight of Coronate T-80 were dropped evenly over 3 hours and reacted. It was.
滴下完了後約2時間反応を継続し、IR測定によりイソシアネートが消失したことを確認して反応を終了し、固形分が約100%のウレタンアクリレート樹脂を含む樹脂組成物を得た。その内、反応性希釈剤である成分(D)を除いたウレタンアクリレート樹脂は、80.0重量%であった。ウレタンアクリレート樹脂のゲル・パーミュエーション・クロマトグラフィー(GPC)にて測定された重量平均分子量は4,628であった。測定条件は以下の通りである。
装置:東ソー(株)製HLC−8220GPC
カラム:東ソー(株)製Super H2000+H4000(各内径6mm 長さ15cm)
展開溶媒:THF
カラム恒温槽温度:40℃
流速:0.5ml/min
対照:単分散ポリスチレン
The reaction was continued for about 2 hours after completion of the dropping, and the reaction was terminated after confirming that the isocyanate had disappeared by IR measurement, and a resin composition containing a urethane acrylate resin having a solid content of about 100% was obtained. Among them, the urethane acrylate resin excluding the component (D) which is a reactive diluent was 80.0% by weight. The weight average molecular weight of the urethane acrylate resin measured by gel permeation chromatography (GPC) was 4,628. The measurement conditions are as follows.
Equipment: HLC-8220GPC manufactured by Tosoh Corporation
Column: Super H2000 + H4000 manufactured by Tosoh Corporation (each inner diameter 6 mm, length 15 cm)
Developing solvent: THF
Column bath temperature: 40 ° C
Flow rate: 0.5 ml / min
Control: monodisperse polystyrene
また、成分(a1)のイソシアネート基のモル数(NCO)と、成分(a2)の比較成分の水酸基のモル数および成分(a3)の水酸基のモル数の合計(OH)の比は、[OH]/[NCO]=1.025であった。
以下に建材用エネルギー線硬化型シーラー組成物の製造例について説明する。
The ratio of the number of moles of isocyanate groups (NCO) of component (a1) to the number of moles of hydroxyl groups of comparative component of component (a2) and the total number of moles of hydroxyl groups of component (a3) (OH) is [OH ] / [NCO] = 1.005.
Production examples of the energy beam curable sealer composition for building materials will be described below.
<実施例1>
合成例1で得られた樹脂組成物50重量部[うち成分(A)であるウレタンアクリレート樹脂 45重量部、成分(D)であるTPGDA 5重量部]、成分(C)として、DAROCURE 1173(BASF社製、2−ヒドロキシ−2−メチルプロピオフェノン) 5.2重量部およびイルガキュア651(BASF社製、2,2−ジメトキシ−1,2−ジフェニルエタン−1−オン) 1.8重量部、成分(D)として、ACMO(KJケミカルズ(株)製、アクリロイルモルフォリン) 8重量部およびTPGDA(ダイセル・オルネクス(株)製、トリプロピレングリコールジアクリレート) 10重量部を加えた容器に、体質顔料として、MINEX10(UNIMIN CORPORATION社製、ネフェリン閃長岩) 30重量部およびハイミクロンG(富士タルク工業(株)製、タルク) 5重量部を加え、撹拌して樹脂組成物を得た。更に、成分(B)として、デュラネート TPA−100(旭化成ケミカルズ(株)製、ヘキサメチレンジイソシアネートのイソシアヌレート体) 10重量部を加え調製し、建材用エネルギー線硬化型シーラー組成物を得た。
<Example 1>
50 parts by weight of the resin composition obtained in Synthesis Example 1 [45 parts by weight of urethane acrylate resin as component (A), 5 parts by weight of TPGDA as component (D)], DAROCURE 1173 (BASF) as component (C) 2-hydroxy-2-methylpropiophenone) 5.2 parts by weight and Irgacure 651 (BASF, 2,2-dimethoxy-1,2-diphenylethane-1-one) 1.8 parts by weight, Ingredient pigment in a container containing 8 parts by weight of ACMO (manufactured by KJ Chemicals, acryloylmorpholine) and 10 parts by weight of TPGDA (manufactured by Daicel Ornex Co., Ltd.) as component (D) MINEX10 (manufactured by UNIMIN CORPORATION, nepheline syenite) 30 parts by weight Fine Himicron G (Fuji Talc Kogyo Co., Ltd., talc) 5 parts by weight, and the mixture was stirred to obtain a resin composition. Furthermore, 10 parts by weight of Duranate TPA-100 (produced by Asahi Kasei Chemicals Co., Ltd., isocyanurate of hexamethylene diisocyanate) was added as a component (B) to prepare an energy ray curable sealer composition for building materials.
<実施例2〜10、比較例1、2>
実施例2〜8、比較例1では、成分(B)を表1に示す成分・配合量に変えたほかは、実施例1と同様にして建材用エネルギー線硬化型シーラー組成物を得た。
実施例9、10では、合成例1で得られた樹脂組成物を合成例2または3で得られた樹脂組成物50重量部[うち成分(A)であるウレタンアクリレート樹脂 40重量部、成分(D)であるTPGDA 10重量部]に変えたほかは、実施例1と同様にして建材用エネルギー線硬化型シーラー組成物を得た。
<Examples 2 to 10, Comparative Examples 1 and 2>
In Examples 2 to 8 and Comparative Example 1, a building material energy ray curable sealer composition was obtained in the same manner as in Example 1 except that the component (B) was changed to the components and blending amounts shown in Table 1.
In Examples 9 and 10, the resin composition obtained in Synthesis Example 1 was mixed with 50 parts by weight of the resin composition obtained in Synthesis Example 2 or 3 [of which, urethane acrylate resin as component (A) 40 parts by weight, component ( D) TPGDA 10 parts by weight] was obtained in the same manner as in Example 1 to obtain an energy ray curable sealer composition for building materials.
比較例2では、合成例1で得られた樹脂組成物を比較合成例で得られた樹脂組成物50重量部[うちウレタンアクリレート樹脂 40重量部、成分(D)であるTPGDA 10重量部]に変えたほかは、実施例1と同様にして建材用エネルギー線硬化型シーラー組成物を得た。用いた成分を以下に示す。 In Comparative Example 2, the resin composition obtained in Synthesis Example 1 was added to 50 parts by weight of the resin composition obtained in Comparative Synthesis Example [including 40 parts by weight of urethane acrylate resin and 10 parts by weight of TPGDA as component (D)]. Except for the change, an energy ray curable sealer composition for building materials was obtained in the same manner as in Example 1. The components used are shown below.
成分(B)
「コロネート HL」(東ソー(株)製、ヘキサメチレンジイソシアネートのアダクト体)固形分は75%であり、酢酸エチル25%との混合物である。
「スミジュール N75」(住化バイエルウレタン(株)製、ヘキサメチレンジイソシアネートのビュレット体)固形分は75%であり、キシレン12.5%およびメトキシプロピルアセテート12.5%との混合物である。
「コスモネート T−80」(三井化学(株)製、トリレンジイソシアネート)
「SBU イソシアネート J243」(住化バイエルウレタン(株)製、ジフェニルメタンジイソシアネートとポリメチレンポリフェニルポリイソシアネート(ポリメリックMDI)の混合物)
「タケネート D110N−75」(三井化学(株)製、キシレンジイソシアネートのトリメチロールプロパンアダクト体)
Ingredient (B)
"Coronate HL" (Tosoh Co., Ltd., hexamethylene diisocyanate adduct) has a solid content of 75% and is a mixture with 25% ethyl acetate.
“Sumijoule N75” (manufactured by Sumika Bayer Urethane Co., Ltd., hexamethylene diisocyanate burette) has a solid content of 75% and is a mixture of 12.5% xylene and 12.5% methoxypropyl acetate.
“Cosmonate T-80” (Mitsui Chemicals, Tolylene Diisocyanate)
"SBU Isocyanate J243" (manufactured by Sumika Bayer Urethane Co., Ltd., mixture of diphenylmethane diisocyanate and polymethylene polyphenyl polyisocyanate (polymeric MDI))
“Takenate D110N-75” (manufactured by Mitsui Chemicals, Inc., trimethylolpropane adduct of xylene diisocyanate)
<被膜付き無機建材の作製>
無機建材板(珪酸カルシウム板)に、実施例1〜10、比較例1、2で得られた建材用エネルギー線硬化型シーラー組成物を、スポンジロールコーターを用い、44g/m2の塗布量で塗装した。更に、アイグラフィック社製の高圧水銀灯(80W/cm)を用いて、積算光量が100mJ/cm2となる量で紫外線を照射し、塗膜を硬化させて被膜付き無機建材を得た。この紫外線照射の際において、光源と塗膜との距離は15cm、無機建材板の移動速度は、5m/分であった。また、硬化被膜の膜厚は40μmであった。
<Preparation of coated inorganic building materials>
The energy ray curable sealer composition for building materials obtained in Examples 1 to 10 and Comparative Examples 1 and 2 was applied to an inorganic building material plate (calcium silicate plate) at a coating amount of 44 g / m 2 using a sponge roll coater. Painted. Further, using a high-pressure mercury lamp (80 W / cm) manufactured by Igraphic, ultraviolet rays were irradiated in an amount such that the integrated light amount was 100 mJ / cm 2, and the coating film was cured to obtain a coated inorganic building material. At the time of this ultraviolet irradiation, the distance between the light source and the coating film was 15 cm, and the moving speed of the inorganic building material plate was 5 m / min. The film thickness of the cured film was 40 μm.
<評価方法>
得られた被膜付き無機基材をダイヤモンドカッターで200×100mmの大きさに切断して試験片を作製し、以下に示す評価試験を行った。
<Evaluation method>
The obtained inorganic substrate with a coating was cut into a size of 200 × 100 mm with a diamond cutter to produce a test piece, and the evaluation test shown below was performed.
(密着性)
硬化被膜の無機建材への密着性を評価するため、JIS K5400に基づき、碁盤目試験を行った。具体的には、試験片の硬化被膜上にカッターで4mm幅、25マスの傷を入れ、碁盤目を付けた試験片を作製し、「セロテープ(登録商標)」を試験片に貼りつけた後、テープを剥離させ、剥離した硬化被膜の面積で、密着性の評価を行った。評価基準が△以上であるものを合格とした。
評価基準(初期密着性/碁盤目試験)
○・・・剥離面積6%未満
△・・・剥離面積6%以上 10%未満
×・・・剥離面積10%以上
(Adhesion)
In order to evaluate the adhesion of the cured coating to the inorganic building material, a cross-cut test was performed based on JIS K5400. Specifically, after making a 4 mm wide and 25 square wound with a cutter on the cured coating of the test piece to produce a test piece with a grid, and attaching “Cello Tape (registered trademark)” to the test piece The tape was peeled off, and the adhesion was evaluated by the area of the peeled cured film. Those whose evaluation criteria were Δ or more were regarded as acceptable.
Evaluation criteria (initial adhesion / cross-cut test)
○ ・ ・ ・ Peeling area less than 6% △ ・ ・ ・ Peeling area of 6% or more and less than 10% × ・ ・ ・ Peeling area of 10% or more
(耐水性)
硬化被膜の耐水性を評価するため、耐温水試験を行った。具体的には、試験片を60℃の温水に240時間浸漬させた後、硬化被膜外観の目視評価を行った。また、240時間浸漬後の試験片に対して碁盤目試験(前述の試験と同様の方法)を行い、耐温水試験後の密着性を評価した。評価基準が△以上であるものを合格とした。
評価基準(外観/目視)
○・・・剥離、ワレ、フクレがなく良好
△・・・剥離やワレ、フクレが僅かにあるが良好
×・・・剥離やワレ、フクレが多く不良
評価基準(耐水試験240時間後の密着性/碁盤目試験)
◎・・・剥離面積3%未満
○・・・剥離面積3%以上 6%未満
△・・・剥離面積6%以上 10%未満
×・・・剥離面積10%以上
(water resistant)
In order to evaluate the water resistance of the cured coating, a hot water resistance test was conducted. Specifically, the test piece was immersed in warm water at 60 ° C. for 240 hours, and then the appearance of the cured film was visually evaluated. Further, a cross-cut test (a method similar to the above-described test) was performed on the test piece after immersion for 240 hours, and the adhesion after the hot water resistance test was evaluated. Those whose evaluation criteria were Δ or more were regarded as acceptable.
Evaluation criteria (appearance / visual)
○ ・ ・ ・ Good with no peeling, cracking, or swelling △ ・ ・ ・ Slight peeling, cracking, or blistering, but good × ・ ・ ・ Many peeling, cracking, or blistering failure Evaluation criteria (Adhesion after 240 hours of water resistance test) / Cross-cut test)
◎ ・ ・ ・ Peeling area less than 3% ○ ・ ・ ・ Peeling area 3% or more and less than 6% △ ・ ・ ・ Peeling area 6% or more and less than 10% × ・ ・ ・ Peeling area 10% or more
(耐凍結融解性)
硬化被膜の耐凍結融解性を評価するため、耐凍結融解試験を行った。具体的には、試験片を−20℃の空気中で2時間冷却した後、20℃の水中で2時間浸漬する操作を1サイクルとし、100サイクル後および200サイクル後の時点における硬化被膜外観の目視評価を行った。また、100サイクル後および200サイクル後の試験片に対して碁盤目試験(前述の試験と同様の方法)を行い、耐凍結融解性試験後の密着性を評価した。評価基準が△以上であるものを合格とした。
評価基準(外観/目視)
○・・・剥離、ワレ、フクレがなく良好
△・・・剥離やワレ、フクレが僅かにあるが良好
×・・・剥離やワレ、フクレが多く不良
評価基準(耐凍結融解試験100サイクル後および200サイクル後の密着性/碁盤目試験)
○・・・剥離面積6%未満
△・・・剥離面積6%以上 10%未満
×・・・剥離面積10%以上
(Freeze-thaw resistance)
In order to evaluate the freeze-thaw resistance of the cured coating, a freeze-thaw resistance test was performed. Specifically, after the test piece was cooled in air at −20 ° C. for 2 hours and then immersed in 20 ° C. water for 2 hours, one cycle was performed, and the appearance of the cured film appearance at the time after 100 cycles and 200 cycles was obtained. Visual evaluation was performed. Further, a cross-cut test (the same method as the above test) was performed on the test pieces after 100 cycles and 200 cycles, and the adhesion after the freeze-thaw resistance test was evaluated. Those whose evaluation criteria were Δ or more were regarded as acceptable.
Evaluation criteria (appearance / visual)
○ ・ ・ ・ Good with no peeling, cracking, or swelling △ ・ ・ ・ Slight peeling, cracking, or swelling is good, but good × ・ ・ ・ Many peeling, cracking, and swelling are bad Evaluation criteria (100 cycles after freeze-thaw test and Adhesion after 200 cycles / cross-cut test)
○ ・ ・ ・ Peeling area less than 6% △ ・ ・ ・ Peeling area of 6% or more and less than 10% × ・ ・ ・ Peeling area of 10% or more
<試験結果>
実施例1〜10および比較例1、2について、それぞれの試験評価を表1に示す。
表1に示すように、実施例1〜10で得られた建材用シーラー組成物からなる硬化被膜は、いずれも密着性、耐水性、耐凍結融解性に優れていた。
<Test results>
Table 1 shows the test evaluations of Examples 1 to 10 and Comparative Examples 1 and 2.
As shown in Table 1, all of the cured films made of the building material sealer compositions obtained in Examples 1 to 10 were excellent in adhesion, water resistance, and freeze-thaw resistance.
一方、成分(B)を含まない比較例1では、耐凍結融解性が不良となった。また、成分(a2)である低分子ジオールの代わりに、高分子ジオールを用いた比較例2では、耐水性および耐凍結融解性が不良となった。本発明のように成分(a2)から得られる成分(A)と成分(B)とを組み合わせることにより、耐水性とともに耐凍結融解性に優れる硬化被膜が形成されると考えられる。 On the other hand, in Comparative Example 1 not containing the component (B), the freeze-thaw resistance was poor. Further, in Comparative Example 2 using a polymer diol instead of the low-molecular diol as the component (a2), the water resistance and freeze-thaw resistance were poor. By combining the component (A) obtained from the component (a2) and the component (B) as in the present invention, it is considered that a cured film excellent in water resistance and freeze-thaw resistance is formed.
本発明の建材用エネルギー線硬化型シーラー組成物は、壁材、床材、屋根材などの各種用途に用いられる、無機基材、有機質基材、複合基材等の、建築物の各種内外装用建材基材に適用することができる。また本発明によれば、当該シーラー組成物により硬化被膜を形成した、各種内外装用建材として好適に使用できる被膜付き建材を提供することができる。 The energy ray curable sealer composition for building materials according to the present invention is used for various interiors and exteriors of buildings such as inorganic base materials, organic base materials, composite base materials and the like used for various applications such as wall materials, floor materials, and roofing materials. It can be applied to building material substrates. Moreover, according to this invention, the building material with a film which can use suitably as various building materials for interior and exterior which formed the cured film with the said sealer composition can be provided.
Claims (7)
ポリイソシアネート(B)と、
光重合開始剤(C)と
を含有することを特徴とする建材用エネルギー線硬化型シーラー組成物。 A urethane (meth) acrylate resin (A) obtained by reacting a polyisocyanate (a1), a low-molecular diol (a2) having a molecular weight of 60 or more and 620 or less, and a (meth) acrylate (a3) having a hydroxyl group;
Polyisocyanate (B);
An energy ray curable sealer composition for building materials, comprising a photopolymerization initiator (C).
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JP2003238844A (en) * | 2002-02-19 | 2003-08-27 | Dainippon Ink & Chem Inc | Ultraviolet curable filler paint composition, painting method and painted building material |
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JP2006028463A (en) * | 2004-07-22 | 2006-02-02 | Three Bond Co Ltd | Photopolymerization initiator and photocurable material using the same |
WO2009001818A1 (en) * | 2007-06-26 | 2008-12-31 | Fujikura Kasei Co., Ltd. | Coating composition for metal thin film, and luster composite coating film produced from the coating composition |
WO2014174861A1 (en) * | 2013-04-26 | 2014-10-30 | ダイセル・オルネクス株式会社 | Urethane (meth)acrylate and active energy ray-curable resin composition |
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JPS59232110A (en) * | 1983-06-16 | 1984-12-26 | Sanyo Chem Ind Ltd | Production of urethane-vinyl resin |
JPH10168387A (en) * | 1996-12-12 | 1998-06-23 | Chugoku Marine Paints Ltd | Ultraviolet hardenable coating composition for woody base material and coating of woody base material |
JP2003238844A (en) * | 2002-02-19 | 2003-08-27 | Dainippon Ink & Chem Inc | Ultraviolet curable filler paint composition, painting method and painted building material |
JP2005097373A (en) * | 2003-09-22 | 2005-04-14 | Dai Ichi Kogyo Seiyaku Co Ltd | Energy ray-curable resin composition and coating material using the same |
JP2006022172A (en) * | 2004-07-07 | 2006-01-26 | Kansai Paint Co Ltd | Sealer composition containing 90 weight % or more solid, coating method using the same and coated product |
JP2006028463A (en) * | 2004-07-22 | 2006-02-02 | Three Bond Co Ltd | Photopolymerization initiator and photocurable material using the same |
WO2009001818A1 (en) * | 2007-06-26 | 2008-12-31 | Fujikura Kasei Co., Ltd. | Coating composition for metal thin film, and luster composite coating film produced from the coating composition |
WO2014174861A1 (en) * | 2013-04-26 | 2014-10-30 | ダイセル・オルネクス株式会社 | Urethane (meth)acrylate and active energy ray-curable resin composition |
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