JP4484567B2 - New water repellent composition for wood - Google Patents
New water repellent composition for wood Download PDFInfo
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- JP4484567B2 JP4484567B2 JP2004113866A JP2004113866A JP4484567B2 JP 4484567 B2 JP4484567 B2 JP 4484567B2 JP 2004113866 A JP2004113866 A JP 2004113866A JP 2004113866 A JP2004113866 A JP 2004113866A JP 4484567 B2 JP4484567 B2 JP 4484567B2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 68
- 239000000203 mixture Substances 0.000 title claims description 31
- 239000005871 repellent Substances 0.000 title claims description 30
- 239000002023 wood Substances 0.000 title claims description 29
- 230000002940 repellent Effects 0.000 title claims description 27
- 239000000839 emulsion Substances 0.000 claims description 63
- 229920001296 polysiloxane Polymers 0.000 claims description 23
- 229920003002 synthetic resin Polymers 0.000 claims description 22
- 239000000057 synthetic resin Substances 0.000 claims description 22
- 239000011120 plywood Substances 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 11
- 239000000945 filler Substances 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 9
- 239000011256 inorganic filler Substances 0.000 claims description 7
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 7
- 239000012766 organic filler Substances 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 239000004925 Acrylic resin Substances 0.000 claims description 6
- 229920000178 Acrylic resin Polymers 0.000 claims description 6
- 229920002857 polybutadiene Polymers 0.000 claims description 5
- 239000012508 resin bead Substances 0.000 claims description 3
- 239000001993 wax Substances 0.000 description 38
- 238000010521 absorption reaction Methods 0.000 description 23
- 230000002265 prevention Effects 0.000 description 20
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 12
- 238000012360 testing method Methods 0.000 description 12
- 239000011324 bead Substances 0.000 description 10
- 229920002545 silicone oil Polymers 0.000 description 9
- 230000000903 blocking effect Effects 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 8
- 229920000459 Nitrile rubber Polymers 0.000 description 7
- 229920005989 resin Polymers 0.000 description 7
- 239000011347 resin Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000002174 Styrene-butadiene Substances 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 230000008018 melting Effects 0.000 description 5
- 229920003048 styrene butadiene rubber Polymers 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000012188 paraffin wax Substances 0.000 description 4
- 230000003405 preventing effect Effects 0.000 description 4
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- 235000008577 Pinus radiata Nutrition 0.000 description 2
- 241000218621 Pinus radiata Species 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 239000003995 emulsifying agent Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 241000218645 Cedrus Species 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241000047703 Nonion Species 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 239000004203 carnauba wax Substances 0.000 description 1
- 235000013869 carnauba wax Nutrition 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000005038 ethylene vinyl acetate Substances 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 239000004200 microcrystalline wax Substances 0.000 description 1
- 235000019808 microcrystalline wax Nutrition 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000012170 montan wax Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000012165 plant wax Substances 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920003216 poly(methylphenylsiloxane) Polymers 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920005792 styrene-acrylic resin Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Description
本発明は、建築用木材や合板を屋外に一時保管する際に好適な水系木材用撥水剤組
成物に関するものである。詳しくは木材や合板の木口を処理することにより水による寸法変化の防止に利用できる木材用水系撥水剤組成物に関するものである。
The present invention relates to a water repellent composition for water-based wood suitable for temporarily storing building wood or plywood outdoors. More specifically, the present invention relates to a water-based water repellent composition for wood that can be used to prevent dimensional changes caused by water by treating the end of wood or plywood.
従来から、建築物用の木材や合板は、建築現場に運ばれて使用に供されるが、建築現場における保管場所は屋外であることが多く風雨等により吸水して含水率が上がりふくれや反りが生じたりすることがある。 Traditionally, timber and plywood for buildings are transported to the construction site for use, but the storage location at the construction site is often outdoors, which absorbs water due to wind and rain to increase the moisture content and cause blistering and warping. May occur.
そこで、その対策として防水シートで覆ったり、シリコーン系、アクリル系、ウレタン系、エステル系の樹脂やモノマーを溶剤や水に希釈溶解させたものを塗布乾燥する方法が知られている。 Therefore, as a countermeasure, a method of covering with a waterproof sheet or applying and drying a solution obtained by diluting and dissolving a silicone-based, acrylic-based, urethane-based or ester-based resin or monomer in a solvent or water is known.
しかしながら、防水シートは使用後に産業廃棄物となるため、環境への配慮から大量に使い続けるには問題があった。溶剤希釈型ではその溶剤の環境に対する負の影響が水希釈型よりも一般的に大きく、また地球環境の保護や資源の活用の面から溶剤を使用しない高性能の水系撥水剤の開発が強く要望されている。 However, since waterproof sheets become industrial waste after use, there is a problem in continuing to use them in large quantities due to environmental considerations. The solvent-diluted type generally has a greater negative impact on the environment than the water-diluted type, and the development of high-performance water-based water repellents that do not use solvents is strong in terms of protecting the global environment and utilizing resources. It is requested.
水系撥水剤としてはシリコ−ン系の組成物が知られている（特許文献１）。またアクリル樹脂系エマルジョン及びワックスからなる組成物も開示されている（特許文献２）が、これらを合板の木口に塗工した場合には吸水防止性やふくれ防止性が十分でない。またアクリル樹脂系エマルジョン及びワックスからなる組成物を塗工した場合には対ブロッキング性が悪い等の問題があり、吸水防止性やふくれ防止性及び対ブロッキング性の良好な木材用撥水剤が要望されている。 As a water-based water repellent, a silicone-based composition is known (Patent Document 1). A composition comprising an acrylic resin emulsion and a wax is also disclosed (Patent Document 2). However, when these are coated on the end of a plywood, water absorption prevention and blister prevention are not sufficient. In addition, when a composition comprising an acrylic resin emulsion and wax is applied, there are problems such as poor antiblocking properties, and there is a demand for a water repellent for wood that has good water absorption prevention, blistering prevention and antiblocking properties. Has been.
本発明が解決しようとする課題は、吸水防止性能及びふくれ防止性能が良好で塗工時のブロッキング性の少ない木材用水系撥水剤組成物を提供することである。 The problem to be solved by the present invention is to provide a water-based water repellent composition for wood having good water absorption prevention performance and blistering prevention performance and low blocking property during coating.
本発明者は上記課題を解決するために鋭意種々の研究を行った結果、ワックス系エマルジョンに、シリコーン系化合物及び平均粒子径が1μm以上１００μm以下である有機または無機の充填剤を添加することを特徴とした組成物を木材、合板またはそれらの木口に対し塗装することにより吸水防止性能、ふくれ防止性能や塗工時の対ブロッキング性が大きく向上することを見出したものである。 As a result of diligent researches to solve the above problems, the present inventor has found that a silicone compound and an organic or inorganic filler having an average particle size of 1 μm or more and 100 μm or less are added to a wax-based emulsion. It has been found that water absorption prevention performance, blistering prevention performance and anti-blocking properties during coating are greatly improved by coating the characteristic composition on wood, plywood or the end of them.
本発明の木材用水系撥水剤組成物を木材や合板の小口に塗装するとそれらの対ブロッキング性、吸水防止性能及びふくれ防止性能を大きく改善できる。 When the water-based water repellent composition for wood of the present invention is applied to the edge of wood or plywood, their antiblocking properties, water absorption prevention performance and blister prevention performance can be greatly improved.
本発明の木材用撥水剤は、ワックス系エマルジョン、シリコーン系化合物及び平均粒子径が1μm以上１００μm以下である有機または無機の充填剤からなる組成物であり、合成樹脂エマルジョンを添加することが好ましい。さらに好ましくはその合成樹脂がアクリル系樹脂、スチレン−ブタジエン系樹脂（以下ＳＢＲという）及びアクリル−ブタジエン系樹脂（以下ＭＢＲという）である。 The water repellent for wood of the present invention is a composition comprising a wax-based emulsion, a silicone-based compound, and an organic or inorganic filler having an average particle size of 1 μm or more and 100 μm or less, and it is preferable to add a synthetic resin emulsion. . More preferably, the synthetic resin is an acrylic resin, a styrene-butadiene resin (hereinafter referred to as SBR), and an acrylic-butadiene resin (hereinafter referred to as MBR).
本発明で用いられるワックス系エマルジョンにおいては、ワックス成分の種類は特に制限されず、たとえば鉱物油系ワックス（パラフィンワックス、マイクロクリスタリンワックス、モンタンワックスなど）、植物系ワックス（カルナバワックス、キャンデリンワックスなど）などの天然ワックス、合成ワックス(エチレン低重合体系合成ワックス、ポリエチレンワックス、ポリエチレンーパラフィンワックスなど)、油脂系合成ワックスなどが挙げられる。これらワックスは単独または二種以上組み合わせて使用できる。 In the wax-based emulsion used in the present invention, the type of the wax component is not particularly limited. For example, mineral oil-based wax (paraffin wax, microcrystalline wax, montan wax, etc.), plant wax (carnauba wax, candelin wax, etc.) ) And other natural waxes, synthetic waxes (ethylene low-polymer synthetic waxes, polyethylene waxes, polyethylene-paraffin waxes, etc.), and oil-based synthetic waxes. These waxes can be used alone or in combination of two or more.
ワックスの融点は５０〜７０℃のものが乾燥時の造膜性や他の成分との相溶性から好ましい。ワックス系エマルジョンはワックスを溶融し、界面活性剤などの分散剤を用いて水中に分散せしめることや、合成樹脂エマルジョン等にワックスを融点以上に加熱して添加することによって得られる。この時、ワックスの分散性を良好にするためポリオキシアルキレン等の相溶化剤を添加することが好ましい。相溶化剤を選択する場合には合成樹脂エマルジョン及びワックス相互の親水性と疎水性の兼ね合いから決定すればよい。 The melting point of the wax is preferably from 50 to 70 ° C. from the viewpoint of film-forming properties during drying and compatibility with other components. The wax-based emulsion can be obtained by melting the wax and dispersing it in water using a dispersant such as a surfactant, or by adding the wax to a synthetic resin emulsion or the like by heating to a melting point or higher. At this time, in order to improve the dispersibility of the wax, it is preferable to add a compatibilizing agent such as polyoxyalkylene. When selecting a compatibilizing agent, it may be determined from the balance between hydrophilicity and hydrophobicity between the synthetic resin emulsion and the wax.
本発明で用いられるシリコーン系化合物は特に限定されず、例えばジメチルシリコーンオイル、メチルフェニルシリコーンオイル、メチル水素シリコーンオイルなどのストレートシリコーンオイル、アルキル変性シリコーンオイル、アルキルアルケニル変性シリコ−ンオイル、アルキル変性シリコーンオイル、シリコーンポリエーテル共重合体、アミノ変性シリコーンオイルなどの変性シリコーンオイル；前記シリコーンオイルを更に高分子量にしてグリース状にしたもの（以下、シリコーングリースという）；前記シリコーンオイル、シリコーングリースをエマルジョン化や溶液化したもの等が挙げられる。これらシリコーン系化合物は単独で用いても良く２種以上を組み合わせて用いても良い。 The silicone compound used in the present invention is not particularly limited. For example, straight silicone oil such as dimethyl silicone oil, methylphenyl silicone oil, methylhydrogen silicone oil, alkyl-modified silicone oil, alkylalkenyl-modified silicone oil, alkyl-modified silicone oil. Modified silicone oils such as silicone polyether copolymers and amino-modified silicone oils; those obtained by further increasing the molecular weight of the silicone oils to form grease (hereinafter referred to as silicone greases); Examples include solutions. These silicone compounds may be used alone or in combination of two or more.
前記シリコーン系化合物には、液状、油状、グリース状、固状のものがあり、限定なく使用し得るが、特にエマルジョン化したものなどが使用しやすく好ましい。 The silicone compounds include liquid, oily, grease-like, and solid-state compounds, which can be used without limitation, but those that are emulsified are particularly preferred because they are easy to use.
本発明で用いられる平均粒子径が1μm以上１００μm以下である有機または無機の充填剤は特に限定されず、例えば有機充填剤としては樹脂ビーズ、無機充填剤としてはグラスバブルス、シラスバルーン等が挙げられる。これらの中でも撥水剤の液状成分のかさ比重とほぼ同等のかさ比重を有し、対吸水性の良い粒状充填剤が好ましい。特に好ましいものとしてはアクリルビーズ、高密度ポリエチレンビーズ、低密度ポリエチレンビーズ、スチレンビーズ、ウレタンビーズ等の樹脂ビーズが挙げられる。 The organic or inorganic filler having an average particle size of 1 μm or more and 100 μm or less used in the present invention is not particularly limited. Examples of the organic filler include resin beads, examples of the inorganic filler include glass bubbles and shirasu balloons. . Among these, a granular filler having a bulk specific gravity almost equal to the bulk specific gravity of the liquid component of the water repellent and good water absorption is preferable. Particularly preferable examples include resin beads such as acrylic beads, high density polyethylene beads, low density polyethylene beads, styrene beads, and urethane beads.
平均粒子径が1μm以上１００μm以下である有機または無機の充填剤のかさ比重は０．８ｇ／cｍ２〜２．０ｇ／ｃｍ２、好ましくは０．９ｇ／cｍ２〜１．５ｇ／ｃｍ２である。かさ比重が０．８ｇ／ｃｍ２未満の場合には撥水剤中で乖離してしまい、また２．０ｇ／ｃｍ２を越える場合には撥水剤中で沈殿しまって攪拌時に均一に混合されがたく、塗布作業が困難になる。 Bulk density of organic or inorganic filler average particle size of 1μm or more 100μm or less 0.8g / cm 2 ~2.0g / cm 2 , preferably 0.9g / cm 2 ~1.5g / cm 2 is there. If the bulk specific gravity is less than 0.8 g / cm 2 , it will dissociate in the water repellent, and if it exceeds 2.0 g / cm 2 , it will precipitate in the water repellent and be mixed uniformly during stirring. The coating operation is difficult.
本発明に用いられる合成樹脂エマルジョンは本発明の撥水剤から形成される皮膜に適度な硬さを与えたり、密着性の向上を目的に使用されることによりその性能を増強させる。その合成樹脂の種類には特に制限はなく、例えばアクリル系樹脂、スチレン−アクリル系樹脂、ブタジエン系樹脂、酢酸ビニル系樹脂、エチレン酢酸ビニル系樹脂の樹脂エマルジョンが挙げられる。なおブタジエン系樹脂としてはＳＢＲ、ＭＢＲ、ＮＢＲ（ブタジエン−アクリロニトリル系樹脂）等ブタジエンを含む高分子が挙げられる。対吸水性等からアクリル系樹脂またはブタジエン系樹脂が好ましい。前記合成樹脂エマルジョンは単独で用いても良く２種以上を組み合わせて用いても良い。合成樹脂エマルジョンの最低造膜温度は特に限定されないが造膜形成性を考量すれば０℃以下が好ましい。 The synthetic resin emulsion used in the present invention enhances its performance by imparting an appropriate hardness to the film formed from the water repellent of the present invention or for the purpose of improving adhesion. There is no restriction | limiting in particular in the kind of the synthetic resin, For example, the resin emulsion of an acrylic resin, a styrene-acrylic resin, a butadiene resin, a vinyl acetate resin, and ethylene vinyl acetate resin is mentioned. Examples of the butadiene resin include polymers containing butadiene such as SBR, MBR, NBR (butadiene-acrylonitrile resin). An acrylic resin or a butadiene resin is preferable from the viewpoint of water absorption. The synthetic resin emulsions may be used alone or in combination of two or more. The minimum film-forming temperature of the synthetic resin emulsion is not particularly limited, but is preferably 0 ° C. or lower in consideration of film-forming property.
本発明の木材用撥水剤組成物において合成樹脂エマルジョンを用いる場合には、ワックス、合成樹脂エマルジョンの混合割合（固形分換算）としてはワックスエマルジョン １００部（重量部、以下同様）に対して合成樹脂エマルジョン１０００部以下、好ましくは３００部以下である。シリコーン系化合物の混合割合としてはワックス系エマルジョン又はワックス系エマルジョンと合成樹脂エマルジョンの混合物 １００部に対して０．１部以上１０部以下である。好ましくは０．５部以上５部以下で使用される。充填剤の混合割合としてはワックス系エマルジョン又はワックス系エマルジョンと合成樹脂エマルジョンの混合物 １００部に対して０．１以上１０部以下、好ましくは０．５部以上５部以下で使用される。 When the synthetic resin emulsion is used in the water repellent composition for wood of the present invention, the mixing ratio (in terms of solid content) of the wax and the synthetic resin emulsion is synthesized with respect to 100 parts by weight of the wax emulsion (the same applies hereinafter). The resin emulsion is 1000 parts or less, preferably 300 parts or less. The mixing ratio of the silicone compound is 0.1 part or more and 10 parts or less with respect to 100 parts of the wax emulsion or the mixture of the wax emulsion and the synthetic resin emulsion. Preferably it is used in 0.5 parts or more and 5 parts or less. The mixing ratio of the filler is 0.1 to 10 parts, preferably 0.5 to 5 parts, based on 100 parts of the wax emulsion or the mixture of the wax emulsion and the synthetic resin emulsion.
ワックス系エマルジョン １００部に対する合成樹脂エマルジョンの割合が１０００部を越えると吸水防止性、ふくれ防止性及び対ブロッキング性が低下する。ワックス系エマルジョン又はワックス系エマルジョンと合成樹脂エマルジョンの混合物 １００部に対し、シリコーン系化合物の混合割合が０．１部未満の場合対ブロッキング性が低下し、１０部を越える場合は吸水防止性及びふくれ防止性が低下する。ワックス系エマルジョン又はワックス系エマルジョンと合成樹脂エマルジョンの混合物 １００部に対し、充填剤の使用割合が０．１部未満の場合は対ブロッキング性や吸水防止性が低下する。１０部を越える場合は吸水防止性が低下する。 When the ratio of the synthetic resin emulsion to 100 parts of the wax-based emulsion exceeds 1000 parts, the water absorption preventing property, the blistering preventing property and the antiblocking property are lowered. When 100 parts of the wax emulsion or the mixture of the wax emulsion and the synthetic resin emulsion is less than 0.1 part of the silicone compound, the blocking property is lowered, and when it exceeds 10 parts, the water absorption prevention and blistering are exceeded. Preventive properties are reduced. When the proportion of the filler used is less than 0.1 part with respect to 100 parts of the wax-based emulsion or the mixture of the wax-based emulsion and the synthetic resin emulsion, the antiblocking property and the water absorption preventing property are lowered. When it exceeds 10 parts, the water-absorption preventing property is lowered.
本発明の木材用撥水剤組成物は、必要に応じて他の成分、例えば顔料分散剤（例えば、ポリカルボン酸塩、ノニオン系界面活性剤など）、湿潤剤（例えば、ノニオン系界面活性剤など）、増粘剤、消泡剤、紫外線防止剤、紫外線吸収剤、酸化防止剤、増膜助剤などの添加剤を混合して用いることもできる。 The water repellent composition for wood according to the present invention contains other components as necessary, for example, pigment dispersants (for example, polycarboxylates, nonionic surfactants, etc.), wetting agents (for example, nonionic surfactants). Etc.), additives such as thickeners, antifoaming agents, UV inhibitors, UV absorbers, antioxidants, film increasing aids, and the like can also be used.
本発明の木材、合板用撥水剤組成物は通常の方法で製造できる。例えばワックスエマルジョンに合成樹脂エマルジョン、シリコーン系化合物及び平均粒子径が1μm以上１００μm以下である有機または無機の充填剤又はそれらの分散液を一括で又は分割して又は一成分ずつ混合攪拌する方法があげられる。 The water repellent composition for wood and plywood of the present invention can be produced by a usual method. For example, a synthetic emulsion, a silicone compound, and an organic or inorganic filler having an average particle size of 1 μm or more and 100 μm or less, or a dispersion thereof in a wax emulsion, or a method of mixing and stirring one component at a time. It is done.
本発明の木材用水系撥水剤組成物を木材又は合板又はそれらの木口に適用する場合、撥水剤をスプレー塗装、浸漬、はけ塗りなどの通常の方法で１ｍ２当り２０〜４００ｇ（固形分）を塗装し乾燥すればよい。 When the water-based water repellent composition for wood of the present invention is applied to wood or plywood or their mouths, the water repellent is 20 to 400 g per 1 m 2 (solid) by a usual method such as spray coating, dipping or brushing. Paint) and dry.
以下、実施例及び比較例により本発明を具体的に説明するが、本発明はこれらの実施例によって限定されるものではない。なお、特に断りがない限り、「部」は「重量部」を表す。 EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention concretely, this invention is not limited by these Examples. Unless otherwise specified, “parts” represents “parts by weight”.
なお下記実施例で用いた評価方法及び原材料を以下にまとめて示す。
［評価方法］
（ａ）撥水性
合板（５０×５０×２４ｍｍ）の木口面に撥水剤をはけで２００〜３００ｇ／ｍ２になるように塗布し、室温で２〜３日乾燥して試験片を作成した。供試体の表面に０．５ｃｃの水滴を落とし、状態観察を行った。評価基準は下記のとおりである。
○ ：接触角大（撥水性良好）
△ ：接触角中
× ：吸水される
（ｂ）吸水率（吸水防止性能）
上記（ａ）試験と同様に作成した試験片を水道水中に２４時間浸漬させ、次式にて吸水率を算出した。
吸水率（％）=（W2−W1）／W1×１００
Ｗ１：試験片の初期重量
Ｗ２：２４時間水道水に浸漬後の重量
（ｃ）ふくれ率
上記（ａ）試験と同様に作成した試験片を水道水中に２４時間浸漬させ、各辺の中心の厚さ４点を測定し、次式によりふくれ率を算出しその平均値を求めた。
ふくれ率（％）=（L2−L1）／L1×１００
L1：試験片の初期の厚さ
L2：水道水に２４時間浸漬後の試験片の厚さ
（ｄ）ブロッキング゛性
２ｋｇの荷重を乗せた試験片（50mm×50mm×24mm）３枚重ねの小口４面に撥水剤を刷毛で約２００〜３００ｇ/ｍ２塗布し、室温で１日乾燥した後、試験片を手ではがして、そのはがし易さからブロッキング性の強さを測定した。評価基準は下記のとおりである。
◎ ほとんど力をかけずに剥がれる ブロッキング性良好
○ 少しの力で剥がれる
△ 剥がすのにかなりの力がいる
× 剥がれない ブロッキング性不良
The evaluation methods and raw materials used in the following examples are summarized below.
[Evaluation methods]
(A) Water repellent A water-repellent agent is applied to the wood end of a plywood (50 × 50 × 24 mm) by brushing to 200 to 300 g / m 2 and dried at room temperature for 2 to 3 days to prepare a test piece. did. A 0.5 cc water droplet was dropped on the surface of the specimen and the state was observed. The evaluation criteria are as follows.
○: Large contact angle (good water repellency)
Δ: Medium in contact angle x: Water is absorbed (b) Water absorption rate (water absorption prevention performance)
A test piece prepared in the same manner as the test (a) was immersed in tap water for 24 hours, and the water absorption rate was calculated by the following formula.
Water absorption rate (%) = (W2−W1) / W1 × 100
W1: Initial weight of test piece W2: Weight after immersion in tap water for 24 hours
(C) Puff rate
A test piece prepared in the same manner as in the above test (a) was immersed in tap water for 24 hours, the thickness at the center of each side was measured at four points, the blister rate was calculated by the following formula, and the average value was obtained.
Blistering rate (%) = (L2-L1) / L1 x 100
L1: Initial thickness of specimen
L2: Thickness of the test piece after being immersed in tap water for 24 hours (d) Blocking property 2 test pieces (50mm x 50mm x 24mm) with a load of 2kg Water repellent agent is applied to the surface of the four small edges After applying about 200 to 300 g / m 2 and drying at room temperature for 1 day, the test piece was peeled off by hand, and the strength of blocking property was measured from the ease of peeling. The evaluation criteria are as follows.
◎ Peel off almost without force Good blocking property ○ Peel off with a little force △ There is considerable power to peel off
× Does not peel
［原材料］（ワックス系エマルジョン）
１） セロゾール４２８
不揮発分 ５０％のパラフィンワックス（融点 ５３℃、乳化剤：アニオン）エマルジョン（中京油脂株式会社製）
２） セロゾール６８６
不揮発分 ５０％のパラフィンワックス（融点 ５４℃、乳化剤：ノニオン）エマルジョン（中京油脂株式会社製）
（シリコ−ン系化合物）
３） ＳＭ７００１ＥＸ
有効成分 ５３％ アルキルアラルキル変性タイプのシリコーンエマルジョン（東レ・ダウコーニング・シリコーン株式会社製）
４） ＳＭ４９０ＥＸ
有効成分３８％ アルキル変性タイプのシリコーンエマルジョン（東レ・ダウコーニング・シリコーン株式会社製）
(充填剤)
５） ケミスノーＳＰＧ−７０Ｃ
ポリスチレン架橋体 平均粒子径 ２０μm（綜研化学株式会社製）
６） シラスバルーンＥＡ−２０
シラスバルーン（昭和化学工業株式会社製）
(合成樹脂エマルジョン)
７） ＡＥ３３７
全固形分 ４８．５％のアクリルエマルジョンＴｇ −３０℃（ＪＳＲ株式会社製）
８） ＡＥ３４３
全固形分 ５５％のアクリルエマルジョン Ｔｇ ０℃（ＪＳＲ株式会社製）
９） ＡＥ３７３Ｂ
全固形分 ５０％のアクリルエマルジョン Ｔｇ １０℃（ＪＳＲ株式会社製）
１０） ０６９６
全固形分 ４８％のＳＢＲ系エマルジョン Ｔｇ −１２℃（ＪＳＲ株式会社製）
１１） Ｎｉｐｏｌ ＬＸ４３０
全固形分 ４９％のＳＢＲ系エマルジョン Ｔｇ １２℃（日本ゼオン株式会社製）
（合板）
表裏単板がラジアータパインで、ラジアータパイン単板厚さ２．４ｍｍ、心板が国産杉単板厚さ３．３ｍｍ、 ９プライ、２５ｍｍ厚（単板構成２．４＋３．３＋２．４＋３．３＋２．４＋３．３＋２．４＋３．３＋２．４ｍｍ）幅５０ｍｍ、長さ５０ｍｍを用いた。
（実施例１及び比較例１〜３）
[Raw materials] (wax emulsion)
1) Cerozole 428
50% non-volatile paraffin wax (melting point 53 ° C., emulsifier: anion) emulsion (manufactured by Chukyo Yushi Co., Ltd.)
2) Cerozole 686
50% non-volatile paraffin wax (melting point 54 ° C., emulsifier: nonion) emulsion (manufactured by Chukyo Yushi Co., Ltd.)
(Silicon compounds)
3) SM7001EX
Active ingredient 53% Alkyl aralkyl modified type silicone emulsion (Toray Dow Corning Silicone Co., Ltd.)
4) SM490EX
38% active ingredient Alkyl-modified silicone emulsion (Toray Dow Corning Silicone Co., Ltd.)
(filler)
5) Chemisnow SPG-70C
Polystyrene cross-linked product Average particle size 20μm (Made by Soken Chemical Co., Ltd.)
6) Shirasu Balloon EA-20
Shirasu Balloon (made by Showa Chemical Industry Co., Ltd.)
(Synthetic resin emulsion)
7) AE337
Acrylic emulsion with a total solid content of 48.5% Tg -30 ° C (manufactured by JSR Corporation)
8) AE343
Acrylic emulsion with a total solid content of 55% Tg 0 ° C (manufactured by JSR Corporation)
9) AE373B
Acrylic emulsion with a total solid content of 50% Tg 10 ° C (manufactured by JSR Corporation)
10) 0696
SBR emulsion with a total solid content of 48% Tg-12 ° C (manufactured by JSR Corporation)
11) Nipol LX430
SBR emulsion with a total solid content of 49% Tg 12 ° C (manufactured by Nippon Zeon Co., Ltd.)
(plywood)
The front and back veneers are radiata pine, the radiata pine veneer thickness is 2.4 mm, the core plate is domestic cedar veneer thickness 3.3 mm, 9 ply, 25 mm thickness (single veneer structure 2.4 + 3.3 + 2.4 + 3.3 + 2. 4 + 3.3 + 2.4 + 3.3 + 2.4 mm) A width of 50 mm and a length of 50 mm were used.
(Example 1 and Comparative Examples 1-3)
表１に記載の割合でワックス系エマルジョンに対してシリコ−ン系エマルジョン及びスチレンビーズ（充填剤）を混合攪拌し木材用水系撥水剤組成物を製造した。 The water-based water repellent composition for wood was manufactured by mixing and stirring the silicone-based emulsion and styrene beads (filler) with the wax-based emulsion at the ratio shown in Table 1.
合板（５０×５０×２５ｍｍ）の木口面４面に木材用水系撥水剤組成物をはけで２００〜３００ｇ／ｍ２になるように塗布し、室温で３日間乾燥して試験片を作成した。 A water-based water repellent composition for wood is applied to 4 sides of a plywood (50 x 50 x 25 mm) with a brush so as to be 200 to 300 g / m 2 and dried at room temperature for 3 days to prepare a test piece. did.
試験片につき撥水性、吸水率、ふくれ率及びブロッキング性の評価を行った結果を表１に記載した。
＜評価結果＞
実施例１のワックス系エマルジョンに対してシリコーン系エマルジョン及びスチレンビーズを配合した撥水剤組成物はスチレンビーズを配合しないもの(比較例１)及びワックス系エマルジョン単独（比較例３）に比べ良好な対ブロッキング性を示した。また吸水率及びふくれ率が小さく良好な吸水防止性能及びふくれ防止性能を示した。シリコーンエマルジョン単独（比較例２）に比べ良好な撥水性を示した。また吸水率及びふくれ率が小さく良好な吸水防止性能及びふくれ防止性能を示した。
（実施例２〜４及び比較例４．５）
Table 1 shows the results of the evaluation of water repellency, water absorption, blistering and blocking properties of the test pieces.
The water repellent composition in which the silicone emulsion and the styrene beads are blended with the wax emulsion in Example 1 is better than the composition without the styrene beads (Comparative Example 1) and the wax emulsion alone (Comparative Example 3). It showed blocking properties. Further, the water absorption rate and blister rate were small, and good water absorption prevention performance and blister prevention performance were shown. Better water repellency was exhibited compared to the silicone emulsion alone (Comparative Example 2). Further, the water absorption rate and blister rate were small, and good water absorption prevention performance and blister prevention performance were shown.
(Examples 2 to 4 and Comparative Example 4.5)
表２に記載の割合でワックス系エマルジョンに対してシリコ−ン系エマルジョン、スチレンビーズ又はシラスバルーン（充填剤）及び合成樹脂エマルジョンを配合し実施例１と同様に木材用撥水剤組成物を製造し、評価を行った。 A water-repellent composition for wood was produced in the same manner as in Example 1 by blending a silicone-based emulsion, styrene beads or shirasu balloon (filler) and a synthetic resin emulsion with a wax-based emulsion in the proportions shown in Table 2. And evaluated.
表３に記載の割合でワックス系エマルジョンに対してシリコ−ン系エマルジョン、スチレンビーズ（充填剤）及び種々合成樹脂エマルジョンを配合し実施例１と同様に木材用撥水剤組成物を製造した。 A water-repellent composition for wood was produced in the same manner as in Example 1 by blending a silicone-based emulsion, styrene beads (filler) and various synthetic resin emulsions with the wax-based emulsion in the proportions shown in Table 3.
実施例１と同様に試験片を作成し、撥水性、吸水率、ふくれ率及びブロッキング性の評価を行った結果を表３に記載した。
実施例５〜９の撥水剤組成物はいずれも良好な対ブロッキング性や吸水防止性能及びふくれ防止性能を示した。
Test pieces were prepared in the same manner as in Example 1 and the results of evaluation of water repellency, water absorption, blistering and blocking properties are shown in Table 3.
The water repellent compositions of Examples 5 to 9 all showed good antiblocking properties, water absorption prevention performance and blister prevention performance.
本発明組成物は木材や合板又はその木口に処理することにより良好な吸水防止性能、ふくれ防止性能や塗工時の対ブロッキング性が得られ、木材、合板、建築産業等に利用できる。
The composition of the present invention can be applied to wood, plywood, the construction industry, etc. by treating wood, plywood or its mouth with good water absorption prevention performance, blistering prevention performance and anti-blocking properties during coating.
Claims (3)
とする請求項１に記載の木材または合板の木口を処理するための木材用撥水剤組成物 The synthetic resin emulsion is made of acrylic resin or butadiene resin
A water repellent composition for wood for treating the wood or plywood end of claim 1
The water repellent composition for wood for treating a wood or plywood end as claimed in any one of claims 1 to 2, wherein the filler is resin beads.
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| JPH0635547B2 (en) * | 1985-10-03 | 1994-05-11 | 三菱化成株式会社 | Water repellent composition |
| JPH028285A (en) * | 1988-06-28 | 1990-01-11 | Kansai Paint Co Ltd | Composition capable of forming water repellent coating film |
| JP3078813B2 (en) * | 1989-04-27 | 2000-08-21 | アース製薬株式会社 | Wood pest control composition |
| JP2862611B2 (en) * | 1990-01-19 | 1999-03-03 | 東京シリコーン株式会社 | Coating |
| JPH03244996A (en) * | 1990-02-22 | 1991-10-31 | Matsushita Refrig Co Ltd | Water-repellent coating composition and heat exchanger using same |
| JP2892145B2 (en) * | 1990-10-31 | 1999-05-17 | 早川ゴム株式会社 | Roof base material with slip resistance |
| JPH05329805A (en) * | 1992-06-02 | 1993-12-14 | Majitsuku Man Kk | Method for forming colorless transparent protective layer in wood in impregnate state |
| JPH06106509A (en) * | 1992-09-25 | 1994-04-19 | Nippon Panefuoomu Kk | Method and device for preventing warpage of plywood |
| JPH08283703A (en) * | 1995-04-20 | 1996-10-29 | N T T Lease Kk | Method for making solid surface water-repellent |
| JPH09276684A (en) * | 1996-04-18 | 1997-10-28 | Mitsubishi Chem Corp | Oil in water type emulsion composition |
| US5695551A (en) * | 1996-12-09 | 1997-12-09 | Dow Corning Corporation | Water repellent composition |
| JPH11171592A (en) * | 1997-12-15 | 1999-06-29 | Nippon Sheet Glass Co Ltd | Water-repellent article and its manufacture |
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| JP2000087012A (en) * | 1998-09-09 | 2000-03-28 | Dainippon Ink & Chem Inc | Moistureproofing resin composition and moistureproof material |
| JP2000167955A (en) * | 1998-12-04 | 2000-06-20 | Nippon Carbide Ind Co Inc | Water super-repellent adhesive film |
| JP2001247854A (en) * | 2000-03-03 | 2001-09-14 | Touritsu Kasei Kogyo Kk | Water repellent for building wood member |
| JP2001310410A (en) * | 2000-04-28 | 2001-11-06 | Komatsu Seiren Co Ltd | Reflective material and manufacturing method therefor |
| JP2002257761A (en) * | 2000-12-25 | 2002-09-11 | Sekisui Chem Co Ltd | Probing method for defect of outside wall material, repairing method for outside wall material, and coating material for surface finishing of outside wall material |
| JP2002241744A (en) * | 2001-02-22 | 2002-08-28 | Shin Etsu Chem Co Ltd | Aqueous water repellent for substrate treatment and method for producing the same, method for producing modified plywood or modified veneer-laminated material and method for producing woody fiberboard |
| JP2003301384A (en) * | 2002-04-04 | 2003-10-24 | Nagoya Oil Chem Co Ltd | Method for producing facing material and laminated material |
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