JPH0373443B2 - - Google Patents
Info
- Publication number
- JPH0373443B2 JPH0373443B2 JP58115636A JP11563683A JPH0373443B2 JP H0373443 B2 JPH0373443 B2 JP H0373443B2 JP 58115636 A JP58115636 A JP 58115636A JP 11563683 A JP11563683 A JP 11563683A JP H0373443 B2 JPH0373443 B2 JP H0373443B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- wood
- ultraviolet absorber
- discoloration
- solution containing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002023 wood Substances 0.000 claims description 19
- 238000002845 discoloration Methods 0.000 claims description 18
- 229920000570 polyether Polymers 0.000 claims description 16
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 12
- 239000002202 Polyethylene glycol Substances 0.000 claims description 8
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 8
- 229920001223 polyethylene glycol Polymers 0.000 claims description 8
- 229920001451 polypropylene glycol Polymers 0.000 claims description 8
- 239000003352 sequestering agent Substances 0.000 claims description 8
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical group C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 claims description 5
- 239000012965 benzophenone Substances 0.000 claims description 5
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 claims description 4
- YGSDEFSMJLZEOE-UHFFFAOYSA-M salicylate Chemical compound OC1=CC=CC=C1C([O-])=O YGSDEFSMJLZEOE-UHFFFAOYSA-M 0.000 claims description 4
- 229960001860 salicylate Drugs 0.000 claims description 4
- 239000004480 active ingredient Substances 0.000 claims description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 2
- 229940071106 ethylenediaminetetraacetate Drugs 0.000 claims description 2
- 150000002429 hydrazines Chemical class 0.000 claims description 2
- 150000003672 ureas Chemical class 0.000 claims description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 24
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 20
- 239000000243 solution Substances 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 11
- 229910052742 iron Inorganic materials 0.000 description 10
- 239000006096 absorbing agent Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 244000055346 Paulownia Species 0.000 description 7
- -1 polyoxymethylene Polymers 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000002195 synergetic effect Effects 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 230000021148 sequestering of metal ion Effects 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 238000004649 discoloration prevention Methods 0.000 description 3
- YAMHXTCMCPHKLN-UHFFFAOYSA-N imidazolidin-2-one Chemical compound O=C1NCCN1 YAMHXTCMCPHKLN-UHFFFAOYSA-N 0.000 description 3
- 229940116351 sebacate Drugs 0.000 description 3
- CXMXRPHRNRROMY-UHFFFAOYSA-L sebacate(2-) Chemical compound [O-]C(=O)CCCCCCCCC([O-])=O CXMXRPHRNRROMY-UHFFFAOYSA-L 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- ZXDDPOHVAMWLBH-UHFFFAOYSA-N 2,4-Dihydroxybenzophenone Chemical compound OC1=CC(O)=CC=C1C(=O)C1=CC=CC=C1 ZXDDPOHVAMWLBH-UHFFFAOYSA-N 0.000 description 2
- LVYLCBNXHHHPSB-UHFFFAOYSA-N 2-hydroxyethyl salicylate Chemical compound OCCOC(=O)C1=CC=CC=C1O LVYLCBNXHHHPSB-UHFFFAOYSA-N 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 241000218652 Larix Species 0.000 description 2
- 235000005590 Larix decidua Nutrition 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 239000007844 bleaching agent Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000005562 fading Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- ZQBAKBUEJOMQEX-UHFFFAOYSA-N phenyl salicylate Chemical compound OC1=CC=CC=C1C(=O)OC1=CC=CC=C1 ZQBAKBUEJOMQEX-UHFFFAOYSA-N 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- YEYCMBWKTZNPDH-UHFFFAOYSA-N (2,2,6,6-tetramethylpiperidin-4-yl) benzoate Chemical compound C1C(C)(C)NC(C)(C)CC1OC(=O)C1=CC=CC=C1 YEYCMBWKTZNPDH-UHFFFAOYSA-N 0.000 description 1
- DEQUKPCANKRTPZ-UHFFFAOYSA-N (2,3-dihydroxyphenyl)-phenylmethanone Chemical compound OC1=CC=CC(C(=O)C=2C=CC=CC=2)=C1O DEQUKPCANKRTPZ-UHFFFAOYSA-N 0.000 description 1
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 description 1
- 241000167854 Bourreria succulenta Species 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 235000017788 Cydonia oblonga Nutrition 0.000 description 1
- QXNVGIXVLWOKEQ-UHFFFAOYSA-N Disodium Chemical compound [Na][Na] QXNVGIXVLWOKEQ-UHFFFAOYSA-N 0.000 description 1
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 description 1
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 description 1
- 241000549546 Fraxinus spaethiana Species 0.000 description 1
- 244000021988 Grevillea robusta Species 0.000 description 1
- 235000019027 Grevillea robusta Nutrition 0.000 description 1
- 241000013479 Guibourtia coleosperma Species 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 241000218657 Picea Species 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 241000219492 Quercus Species 0.000 description 1
- 240000007313 Tilia cordata Species 0.000 description 1
- 241001106462 Ulmus Species 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 241000190021 Zelkova Species 0.000 description 1
- 241000190020 Zelkova serrata Species 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- WXNRYSGJLQFHBR-UHFFFAOYSA-N bis(2,4-dihydroxyphenyl)methanone Chemical compound OC1=CC(O)=CC=C1C(=O)C1=CC=C(O)C=C1O WXNRYSGJLQFHBR-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 235000019693 cherries Nutrition 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 229960002089 ferrous chloride Drugs 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- JVKAWJASTRPFQY-UHFFFAOYSA-N n-(2-aminoethyl)hydroxylamine Chemical compound NCCNO JVKAWJASTRPFQY-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- QPCDCPDFJACHGM-UHFFFAOYSA-K pentetate(3-) Chemical compound OC(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O QPCDCPDFJACHGM-UHFFFAOYSA-K 0.000 description 1
- 229960000969 phenyl salicylate Drugs 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- DUIOPKIIICUYRZ-UHFFFAOYSA-N semicarbazide Chemical compound NNC(N)=O DUIOPKIIICUYRZ-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Chemical And Physical Treatments For Wood And The Like (AREA)
Description
本発明は木材の変色防止用組成物に関するもの
である。
木材は建材、家具等に広く利用されている。し
かし、木材は日光の影響、空気中の酸素による影
響、鉄等の金属による影響、あるいは温湿度の変
化による影響等の外界の影響によつて退色、変色
し長期間新材の状況を保つことは非常に困難であ
る。
この変色や退色は建材の内装材あるいは家具の
内装材等においては、特に大きな問題となる。こ
のため、変色や退色を防止する方法として従来い
くつかの方法が開発されてきた。例えば天日で乾
燥する方法、煮沸またはプレスによつて変色の原
因となる物質を抽出除去する方法、漂白剤によつ
て漂白する方法、酸化剤によつて処理する方法等
が知られている。しかし、天日乾燥では長期の乾
燥が必要なうえに広い乾燥場を要するために非常
に生産性が悪い。また、プレスや煮沸によつて変
色の原因となる物質を除去する方法では木材を損
傷させることなく、完全な抽出除去を行うことは
非常に困難である。また、漂白剤で漂白する方法
及び酸化剤にて処理する方法では、一時的反応に
よつて効果があつたとしてもその効果は長期間維
持できにくく長期間変色を防止することが困難で
ある。
本発明者は従来の木材の上記変色防止法の難点
を解決するために種々の研究を続けてきたが、こ
こにおいて紫外線吸収剤とポリエーテル類とを併
用すれば両者の相乗作用により著しく優れた変色
防止効果を発揮し、所期の目的を達成しうること
を見出し、本発明を完成するに至つた。
すなわち、本発明を紫外線吸収剤およびポリエ
ーテル類を有効成分として含有して成る木材の変
色防止用組成物に係るものである。
本発明に於いて使用される紫外線吸収剤として
は２，2′，４，4′−テトラヒドロキシベンゾフエ
ノン、２，４−ジヒドロキシベンゾフエノン、２
−ヒドロキシ−４−メトキシベンゾフエノン、
２，2′−ジヒドロキシ−４−4′−ジメトキシベン
ゾフエノン等のベンゾフエノン系の紫外線吸収
剤、４−ベンゾイロキシ−２，２，６，６−テト
ラメチルピペリジン、ビス−（２，２，６，６−
テトラメチル−４−ピペリジン）セバケート等の
ピペリジン系紫外線吸収剤、フエニルサリシレー
ト、モノグリコールサリシレート等のサリシレー
ト系紫外線吸収剤等を代表例として例示でき、こ
れらの少くとも一種を使用する。上記の紫外線吸
収剤のうちベンゾフエノン系紫外線吸収剤が特に
好ましい。
本発明におけるポリエーテル類としてはポリオ
キシメチレン系、ポリオキシエチレン系、ポリト
リメチレンオキシド系のものが使用出来、具体的
にはポリエチレングリコール、ポリプロピレング
リコールを例示できる。これらのポリエチレング
リコール、ポリプロピレングリコールはその分子
量としては特に制限されないが、ポリエチレング
リコールは分子量200〜6000、ポリプロピレング
リコールは分子量400〜4000のものが好ましく、
これらの一種または二種以上を使用する。
本発明においては紫外線吸収剤とポリエーテル
類とを必要に応じて適当な媒体を用いて液状で使
用する。たとえば水溶液、溶剤溶液、乳化液ある
いは分散液の形態にて使用する。また加熱溶融し
て使用することも出来る。この際の媒体としては
特に限定されないが、トルエン、キシレン等の芳
香族炭化水素系、酢酸エチル、酢酸ブチル等のエ
ステル系、メタノール、エタノール、ｎ−ブタノ
ール等のアルコール系、アセトン、メチルエチル
ケトン等のケトン系等の適宜な有機溶剤を挙げる
ことができ、また水も使用することが出来、これ
らの１種あるいは２種以上の混合溶媒として使用
される。また適当な乳化剤や分散剤を用いて乳化
液や分散液としても使用される。
紫外線吸収剤とポリエーテル類との使用割合は
前者１重量部に対し後者１〜10000重量部、好ま
しくは10〜1000重量部程度である。
この際紫外線吸収剤の使用割合が上記範囲から
極端に少なくなると、相乗作用が発揮され難く、
また逆にあまり多くなりすぎると、木材表面に析
出して来る場合がある。
また本発明組成物には、金属イオン封鎖剤を更
に含有させることにより、上記紫外線防止剤とポ
リエーテル類との相乗作用を一段と向上せしめる
ことが出来る。特に該金属イオン封鎖剤の効果は
木材がたとえばキリやナラの如く金属の汚染の影
響を受け易い木材に好適である。この際の金属イ
オン封鎖剤としては、キレート化合物、エチレン
ジアミン系化合物、カルボン酸系化合物が好まし
く、例えばｎ−ヒドロキシエチレンジアミン、エ
チレンジアミン四酢酸塩、ニトロトリ酢酸塩、
Ｎ，N′，N″−トリ酢酸塩、ジエチレントリアミ
ンペンタ酢酸塩等を例示出来る。この金属イオン
封鎖剤を使用する場合には配合比に特に制限はな
いが通常紫外線吸収剤とポリエーテル類の合計量
100重量部に対し金属イオン封鎖剤を１〜100重量
部の割合で使用するのが好ましい。
本発明に於いては更に尿素、エチレン尿素、テ
オ尿素等の尿素系化合物、ヒドラジン水和物等の
ヒドラジン類、セミカルバジド等のカルバジド類
を含有させることが出来、これにより変色防止効
果を更に向上せしめることが出来る。これ等化合
物の使用割合は紫外線吸収剤とポリエーテル類の
合計量100重量部に対し１〜100重量部程度であ
る。
本発明の変色防止剤によれば紫外線吸収剤とポ
リエーテル類との相乗作用によつてそれぞれの単
独使用の場合に比べて極めて優れた変色防止効果
が得られる。例えば(イ)ベンゾフエノン系紫外線吸
収剤10重量部を含有する溶液を塗布処理した桐の
試験片は10日間の紫外線照射でわずかに黄変し、
加湿環境下では８日で赤変７日で黒変した。(ロ)ポ
リエチレングリコール100重量部を含有する溶液
を塗布処理した桐の試験片は７日間の紫外線照射
で黄変し60℃98％RH以上、加湿環境下では９日
で赤変した。(ハ)ベンゾフエノン紫外線吸収剤10重
量部ポリエチレングリコール90重量部を含有する
溶液を塗布処理した桐の試験片は20日間の紫外線
照射でもほとんど変色せず、加湿環境下で30日を
経過しても変色しなかつた。また(i)サリシレート
系紫外線吸収剤10重量部を含有する溶液を含浸処
理したナラの試験片を鉄水溶液に浸漬したところ
１日で鉄汚染が生じた。(ii)ポリプロピレングリコ
ール（＃700）10重量部を含有する溶液を含浸処
理したナラの試験片を鉄水溶液に浸漬したところ
３日で鉄汚染が生じた。(iii)エチレンジミン四酢酸
ニナトリウム10重量部を含有する溶液を含浸処理
したナラの試験片を鉄水溶液に浸漬したところ５
日で鉄汚染が生じた。(iv)サリシレート系紫外線吸
収剤１重量部ポリプロピレングリコール８重量部
エチレンジアミン四酢酸ニナトリウム１重量部を
含む溶液を含浸処理したナラの試験片を鉄水溶液
に浸漬したところ30日経過しても鉄汚染は生じな
かつた。この様に本発明の組成物は相乗作用によ
り著しく優れた変色防止効果を発揮するのであ
る。
本発明によりかかる優れた変色防止効果が得ら
れる理由はさだかではない。この変色防止用組成
物中のポリエーテル類は木材中のセルロースの
OH基と結合し、この結合によりその木材はポリ
エーテル類によつてマスキングされ外界の変色原
因から保護する働きを有するものと思われる。紫
外線吸収剤は単に木材を紫外線から保護するのみ
ならず、このポリエーテル類のマスキング作用を
相乗的に増強するものと思われる。また、ポリエ
ーテル類には紫外線吸収剤金属イオン封鎖剤等の
薬剤を長期間木材中に維持させる働きがあるもの
と思われる。
本発明変色防止用組成物を適用できる木材は特
に限定されず、例えばナラ、キリ、マカバ、シオ
ジ、ケヤキ、サクラ、タモ、ニレ、シナノキ、セ
ン、ネムノキ、オーク、シルキーオーク、ブビン
ガ、カリン、スプルース等の国産材及び輸入材を
挙げることができる。
以下に実施例をあげて本発明を説明する。
実施例 １
10mm×70mm×450mmの桐の試験片に、２，４−
ジヒドロキシ−ベンゾフエノン1.0重量％ポリエ
チレングリコール（＃2000）9.0重量％を含むメ
タノール溶液を60ｇ／m2の割合で塗布した。
比較例 １
実施例１と同様の桐の試験片に何の処理も施さ
ないものを比較例１とした。
比較例 ２
実施例１と同様の桐の試験片に２，４−ジヒド
ロキシベンゾフエノン10.0重量％を含むメタノー
ル溶液を60ｇ／m2の割合で塗布した。
比較例 ３
実施例１と同様の桐の試験片にポリエチレング
リコール（＃2000）10.0重量％を含むメタノール
溶液を60ｇ／m2の割合で塗布した。
＜試験法＞
以上の実施例１、比較例１、比較例２及び比較
例３のものについて紫外線照射試験及び加湿試験
を行なつた。
〔紫外線照射試験〕
フエードメーターにて室温下に紫外線を140時
間照射した。結果を第１表に示す。
〔加温試験〕
60℃、98％RHに設定した恒温恒湿器（佐竹化
学工業(株)製）中に試験片をセツトした。結果を第
１表に示す。
The present invention relates to a composition for preventing discoloration of wood. Wood is widely used for building materials, furniture, etc. However, wood fades and discolors due to external influences such as sunlight, oxygen in the air, metals such as iron, and changes in temperature and humidity, making it difficult for wood to remain like new wood for a long time. is extremely difficult. This discoloration or fading is a particularly serious problem in interior materials for building materials, interior materials for furniture, and the like. For this reason, several methods have been developed to prevent discoloration and fading. For example, methods such as drying in the sun, extracting and removing substances that cause discoloration by boiling or pressing, bleaching with a bleaching agent, and treating with an oxidizing agent are known. However, solar drying requires long drying times and a large drying area, resulting in extremely low productivity. Furthermore, it is very difficult to completely extract and remove materials that cause discoloration without damaging the wood using methods such as pressing or boiling to remove materials that cause discoloration. Furthermore, in the method of bleaching with a bleaching agent and the method of treating with an oxidizing agent, even if the effect is due to a temporary reaction, the effect cannot be maintained for a long period of time and it is difficult to prevent discoloration for a long period of time. The present inventor has continued various studies in order to solve the problems of the conventional methods for preventing discoloration of wood, and has found that the use of UV absorbers and polyethers in combination results in remarkable superiority due to the synergistic effect of the two. The present inventors have discovered that the desired objective can be achieved by exhibiting an effect of preventing discoloration, and have completed the present invention. That is, the present invention relates to a composition for preventing discoloration of wood, which contains an ultraviolet absorber and a polyether as active ingredients. The ultraviolet absorbers used in the present invention include 2,2',4,4'-tetrahydroxybenzophenone, 2,4-dihydroxybenzophenone,
-hydroxy-4-methoxybenzophenone,
Benzophenone UV absorbers such as 2,2'-dihydroxy-4-4'-dimethoxybenzophenone, 4-benzoyloxy-2,2,6,6-tetramethylpiperidine, bis-(2,2,6, 6-
Representative examples include piperidine-based ultraviolet absorbers such as tetramethyl-4-piperidine) sebacate, salicylate-based ultraviolet absorbers such as phenyl salicylate, and monoglycol salicylate, and at least one of these is used. Among the above ultraviolet absorbers, benzophenone ultraviolet absorbers are particularly preferred. As the polyether in the present invention, polyoxymethylene, polyoxyethylene, and polytrimethylene oxide can be used, and specific examples include polyethylene glycol and polypropylene glycol. The molecular weight of these polyethylene glycol and polypropylene glycol is not particularly limited, but polyethylene glycol preferably has a molecular weight of 200 to 6000, and polypropylene glycol preferably has a molecular weight of 400 to 4000.
One or more of these may be used. In the present invention, the ultraviolet absorber and polyether are used in liquid form using a suitable medium as required. For example, it is used in the form of an aqueous solution, solvent solution, emulsion or dispersion. It can also be used after being heated and melted. The media used in this case are not particularly limited, but include aromatic hydrocarbons such as toluene and xylene, esters such as ethyl acetate and butyl acetate, alcohols such as methanol, ethanol, and n-butanol, and ketones such as acetone and methyl ethyl ketone. In addition, water can be used, and one type or a mixed solvent of two or more of these can be used. It can also be used as an emulsion or dispersion using a suitable emulsifier or dispersant. The proportion of the ultraviolet absorber and polyether used is 1 to 10,000 parts by weight, preferably about 10 to 1,000 parts by weight, per 1 part by weight of the former. At this time, if the usage ratio of the ultraviolet absorber is extremely reduced from the above range, it will be difficult to exhibit a synergistic effect.
On the other hand, if the amount is too large, it may precipitate on the surface of the wood. Further, by further containing a metal ion sequestering agent in the composition of the present invention, the synergistic effect between the above-mentioned ultraviolet inhibitor and polyether can be further improved. In particular, the effect of the metal ion sequestering agent is suitable for wood that is easily affected by metal contamination, such as wood such as oak and oak. The sequestering agent in this case is preferably a chelate compound, an ethylenediamine compound, or a carboxylic acid compound, such as n-hydroxyethylenediamine, ethylenediaminetetraacetate, nitrotriacetate,
Examples include N,N',N''-triacetate, diethylenetriaminepentaacetate, etc.When using this metal ion sequestering agent, there is no particular restriction on the compounding ratio, but it is usually the sum of the ultraviolet absorber and polyethers. amount
Preferably, the sequestering agent is used in a proportion of 1 to 100 parts by weight per 100 parts by weight. In the present invention, urea compounds such as urea, ethylene urea, and theourea, hydrazines such as hydrazine hydrate, and carbazides such as semicarbazide can be further contained, thereby further improving the discoloration prevention effect. I can do it. The proportion of these compounds to be used is about 1 to 100 parts by weight per 100 parts by weight of the total amount of the ultraviolet absorber and polyether. According to the discoloration inhibitor of the present invention, the synergistic action of the ultraviolet absorber and the polyethers provides an extremely superior discoloration prevention effect compared to when each is used alone. For example, (a) a test piece of paulownia treated with a solution containing 10 parts by weight of a benzophenone ultraviolet absorber turned slightly yellow after being irradiated with ultraviolet light for 10 days.
In a humidified environment, it turned red in 8 days and turned black in 7 days. (b) A test piece of paulownia wood coated with a solution containing 100 parts by weight of polyethylene glycol turned yellow after 7 days of ultraviolet irradiation, and turned red after 9 days at 60°C and 98% RH or higher in a humidified environment. (c) A paulownia wood test piece coated with a solution containing 10 parts by weight of benzophenone ultraviolet absorber and 90 parts by weight of polyethylene glycol showed almost no discoloration even after 20 days of ultraviolet irradiation, and even after 30 days in a humidified environment. It did not change color. (i) When a specimen of oak impregnated with a solution containing 10 parts by weight of a salicylate ultraviolet absorber was immersed in an aqueous iron solution, iron contamination occurred within one day. (ii) When a test piece of oak impregnated with a solution containing 10 parts by weight of polypropylene glycol (#700) was immersed in an aqueous iron solution, iron staining occurred within 3 days. (iii) An oak test piece impregnated with a solution containing 10 parts by weight of disodium ethylenediminetetraacetate was immersed in an iron aqueous solution.
Iron contamination occurred during the day. (iv) When a test piece of oak impregnated with a solution containing 1 part by weight of a salicylate ultraviolet absorber and 8 parts by weight of polypropylene glycol and 1 part by weight of disodium ethylenediaminetetraacetate was immersed in an iron aqueous solution, it remained contaminated with iron even after 30 days had passed. did not occur. As described above, the composition of the present invention exhibits an extremely excellent anti-discoloration effect due to the synergistic effect. The reason why such an excellent anti-discoloration effect can be obtained by the present invention is not obvious. The polyethers in this discoloration prevention composition are
It is thought that it binds to the OH group, and that this bond causes the wood to be masked by polyethers and has the function of protecting it from external causes of discoloration. It is believed that the UV absorber not only protects the wood from UV rays, but also synergistically enhances the masking action of the polyethers. In addition, polyethers are thought to have the ability to maintain chemicals such as ultraviolet absorbers and metal ion sequestering agents in wood for a long period of time. The wood to which the composition for preventing discoloration of the present invention can be applied is not particularly limited, and examples thereof include oak, thorn, merkaba, shioji, zelkova, cherry, ash, elm, linden, Japanese elm, oak, silky oak, bubinga, quince, and spruce. Both domestic and imported materials can be mentioned. The present invention will be explained below with reference to Examples. Example 1 A 10 mm x 70 mm x 450 mm paulownia specimen was coated with 2,4-
A methanol solution containing 1.0% by weight of dihydroxy-benzophenone and 9.0% by weight of polyethylene glycol (#2000) was applied at a rate of 60 g/m 2 . Comparative Example 1 Comparative Example 1 was a paulownia test piece similar to Example 1 without any treatment. Comparative Example 2 A methanol solution containing 10.0% by weight of 2,4-dihydroxybenzophenone was applied to the same paulownia test piece as in Example 1 at a rate of 60 g/m 2 . Comparative Example 3 A methanol solution containing 10.0% by weight of polyethylene glycol (#2000) was applied to the same paulownia test piece as in Example 1 at a rate of 60 g/m 2 . <Test Method> An ultraviolet irradiation test and a humidification test were conducted on the products of Example 1, Comparative Example 1, Comparative Example 2, and Comparative Example 3 described above. [Ultraviolet irradiation test] Ultraviolet rays were irradiated for 140 hours at room temperature using a fade meter. The results are shown in Table 1. [Heating test] A test piece was set in a constant temperature and humidity chamber (manufactured by Satake Chemical Industry Co., Ltd.) set at 60° C. and 98% RH. The results are shown in Table 1.
試験片を塩化第一鉄の0.01％水溶液に浸漬し
た。結果を第２表に示す。
The test piece was immersed in a 0.01% aqueous solution of ferrous chloride. The results are shown in Table 2.
【表】
但し上記第２表の記号は第１表と同様のことを
示す。
実施例 ３
厚さ0.2mmのカラマツの単板にビス（２，２，
６，６−テトラメチル−４−ピペリジン）セバケ
ート0.2重量％、ポリプロピレングリコール（分
子量400）10重量％、エチレン尿素２重量％を含
むメタノール溶液を40ｇ／m2の割合で塗布した。
比較例 ８
実施例３と同じカラマツの単板にビス（２，
２，６，６−テトラメチール−４−ピペリジン）
セバケート0.2重量％を含むメタノール溶液を40
ｇ／m2の割合で塗布した。
比較例 ９
実施例３と同じカラマツの単板にポリプロピレ
ングリコール（分子量400）10重量％を含むメタ
ノール溶液を40ｇ／m2の割合で塗布した。
比較例 10
実施例３と同じカラマツの単板にエチレン尿素
２重量％を含むメタノール溶液を40ｇ／m2の割合
で塗布した。
上記実施例３及び比較例８〜10で得られたもの
につき、実施例１と同様にして試験した。この結
果を下記第３表に示す。[Table] However, the symbols in Table 2 above indicate the same things as in Table 1. Example 3 Screws (2, 2,
A methanol solution containing 0.2% by weight of 6,6-tetramethyl-4-piperidine) sebacate, 10% by weight of polypropylene glycol (molecular weight 400), and 2% by weight of ethylene urea was applied at a rate of 40 g/m 2 . Comparative Example 8 Screws (2,
2,6,6-tetramethyl-4-piperidine)
40 methanol solution containing 0.2% by weight of sebacate
It was applied at a rate of g/m 2 . Comparative Example 9 A methanol solution containing 10% by weight of polypropylene glycol (molecular weight 400) was applied to the same larch veneer as in Example 3 at a rate of 40 g/m 2 . Comparative Example 10 A methanol solution containing 2% by weight of ethylene urea was applied to the same larch veneer as in Example 3 at a rate of 40 g/m 2 . The samples obtained in Example 3 and Comparative Examples 8 to 10 were tested in the same manner as in Example 1. The results are shown in Table 3 below.
Claims (1)
として含有して成る木材の変色防止用組成物。 ２ 紫外線吸収剤がベンゾフエノン系、ピペリジ
ン系、サリシレート系紫外線吸収剤である特許請
求の範囲第１項記載の組成物。 ３ ポリエーテル類がポリエチレングリコール及
び（又は）ポリプロピレングリコールである特許
請求の範囲第１項記載の組成物。 ４ 紫外線吸収剤、ポリエーテル類及び金属イオ
ン封鎖剤を有効成分として含有して成る木材の変
色防止用組成物。 ５ 金属イオン封鎖剤がエチレンジアミン四酢酸
塩、ニトロトリ酢酸塩、ｎ−ヒドロキシエチレン
の少くとも１種である特許請求の範囲第４項の組
成物。 ６ 尿素系化合物、ヒドラジン類及びカルバジド
類の少なくとも１種を配合した特許請求の範囲第
１項または第４項の組成物。[Claims] 1. A composition for preventing discoloration of wood, comprising an ultraviolet absorber and polyethers as active ingredients. 2. The composition according to claim 1, wherein the ultraviolet absorber is a benzophenone-based, piperidine-based, or salicylate-based ultraviolet absorber. 3. The composition according to claim 1, wherein the polyether is polyethylene glycol and/or polypropylene glycol. 4. A composition for preventing discoloration of wood, which contains an ultraviolet absorber, a polyether, and a sequestering agent as active ingredients. 5. The composition according to claim 4, wherein the sequestering agent is at least one of ethylenediaminetetraacetate, nitrotriacetate, and n-hydroxyethylene. 6. The composition according to claim 1 or 4, which contains at least one of urea compounds, hydrazines, and carbazides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11563683A JPS608004A (en) | 1983-06-27 | 1983-06-27 | Composition for preventing color change of wood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11563683A JPS608004A (en) | 1983-06-27 | 1983-06-27 | Composition for preventing color change of wood |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS608004A JPS608004A (en) | 1985-01-16 |
| JPH0373443B2 true JPH0373443B2 (en) | 1991-11-21 |
Family
ID=14667544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11563683A Granted JPS608004A (en) | 1983-06-27 | 1983-06-27 | Composition for preventing color change of wood |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS608004A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2641754B2 (en) * | 1988-11-30 | 1997-08-20 | 松下電工株式会社 | How to prevent light fading of wood |
| JPH0646451Y2 (en) * | 1989-11-16 | 1994-11-30 | 三洋電機株式会社 | Dishwasher |
| ES2179091T3 (en) * | 1994-02-10 | 2003-01-16 | Ciba Sc Holding Ag | WOOD PROTECTION VARNISH. |
| CN110539375B (en) * | 2019-08-14 | 2021-03-26 | 浙江菱格木业有限公司 | Teak color change treatment method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5227204A (en) * | 1975-08-25 | 1977-03-01 | Nippon Telegr & Teleph Corp <Ntt> | Electric striction-type coordinate selector |
| JPS5441306A (en) * | 1977-09-05 | 1979-04-02 | Yamanashi Prefecture | Wood defatting method |
| JPS57123010A (en) * | 1981-01-24 | 1982-07-31 | Matsushita Electric Works Ltd | Method of preventing discoloration of wood |
-
1983
- 1983-06-27 JP JP11563683A patent/JPS608004A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5227204A (en) * | 1975-08-25 | 1977-03-01 | Nippon Telegr & Teleph Corp <Ntt> | Electric striction-type coordinate selector |
| JPS5441306A (en) * | 1977-09-05 | 1979-04-02 | Yamanashi Prefecture | Wood defatting method |
| JPS57123010A (en) * | 1981-01-24 | 1982-07-31 | Matsushita Electric Works Ltd | Method of preventing discoloration of wood |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS608004A (en) | 1985-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE1289718B (en) | Process for the protective treatment of an object | |
| EP0094721A1 (en) | Synergistic preservative compositions, products containing them and processes for using them | |
| JPH0373443B2 (en) | ||
| Ravindranath et al. | Polarographic behaviour of arylazo pyrazoles | |
| MX2007000500A (en) | Wood preservative composition. | |
| EP0016298B1 (en) | A solution for imparting tarnish resistance on aluminium surfaces and method for applying it | |
| WO1998029199A1 (en) | Stain inhibiting pigment composition | |
| Zabin et al. | The reactions of metal oxides with aquated chromium (II) ion | |
| KR19980703181A (en) | Compositions and Methods of Forming a Solid Adhesion Protective Coating on a Metal Surface | |
| Gunasekaran et al. | Enhanced synergistic inhibition by calcium gluconate in low chloride media. Part I. Kinetics of corrosion | |
| JPS62156274A (en) | Treatment of aqueous system | |
| Pace et al. | The anomalous effect of concentrationon inhibition of the corrosion of iron by solutions of sodium benzoate | |
| US3502777A (en) | Biocidal agents based upon heavy metal pentachlorophenolates | |
| DE10013828A1 (en) | Metal process equipment or container for use in contact with vinyl monomers, e.g. distillation apparatus, has at least part of metal surface treated with polymeric complex former to prevent deposition of polymer | |
| Kobayashi et al. | Permeative separation of metal ions through the polymer membrane containing gluconate group | |
| US3144297A (en) | Bleaching composition containing hydrogen peroxide and method of bleaching colored wood | |
| US4775416A (en) | Timber branding | |
| JP7214175B1 (en) | Aqueous fixing composition | |
| Kaušpėdienė et al. | Simultaneous purification of sewage from Cd (II) and nonionic surfactant with cation exchanger | |
| Colmano | The chemical stability of chlorophyll a in monolayers at a water-air interface | |
| US4313977A (en) | Reduced volatility of a halogenated phenol in wood | |
| US2268387A (en) | Presservation of wood | |
| Goldberg et al. | The reaction of" blue" copper oxidases with O2: a pulse radiolysis study. | |
| Akiba et al. | Extraction of uranyl 2-thenoyltrifluoroacetone complexes into alcohol, ketone, ether and ester solvents | |
| CN1176943A (en) | Liquid for preventing mildew on glass, and method for producting the liquid |