JPH0547589B2 - - Google Patents
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- Publication number
- JPH0547589B2 JPH0547589B2 JP57046129A JP4612982A JPH0547589B2 JP H0547589 B2 JPH0547589 B2 JP H0547589B2 JP 57046129 A JP57046129 A JP 57046129A JP 4612982 A JP4612982 A JP 4612982A JP H0547589 B2 JPH0547589 B2 JP H0547589B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- emulsion
- polymerization
- water
- 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
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- 239000000178 monomer Substances 0.000 claims description 21
- 239000000839 emulsion Substances 0.000 claims description 16
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 10
- 238000007720 emulsion polymerization reaction Methods 0.000 claims description 7
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 7
- 238000006116 polymerization reaction Methods 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 6
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 6
- 229920002554 vinyl polymer Polymers 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 125000005396 acrylic acid ester group Chemical group 0.000 claims description 4
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 4
- 239000002685 polymerization catalyst Substances 0.000 claims description 3
- 239000003607 modifier Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- -1 alcohol sulfates Chemical class 0.000 description 12
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000001035 drying Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 6
- YAJYJWXEWKRTPO-UHFFFAOYSA-N 2,3,3,4,4,5-hexamethylhexane-2-thiol Chemical compound CC(C)C(C)(C)C(C)(C)C(C)(C)S YAJYJWXEWKRTPO-UHFFFAOYSA-N 0.000 description 5
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical group CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 125000005037 alkyl phenyl group Chemical group 0.000 description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 239000002736 nonionic surfactant Substances 0.000 description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 125000005907 alkyl ester group Chemical group 0.000 description 2
- 150000005215 alkyl ethers Chemical class 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 2
- 239000003945 anionic surfactant Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 229920006163 vinyl copolymer Polymers 0.000 description 2
- 239000003021 water soluble solvent Substances 0.000 description 2
- OEPOKWHJYJXUGD-UHFFFAOYSA-N 2-(3-phenylmethoxyphenyl)-1,3-thiazole-4-carbaldehyde Chemical compound O=CC1=CSC(C=2C=C(OCC=3C=CC=CC=3)C=CC=2)=N1 OEPOKWHJYJXUGD-UHFFFAOYSA-N 0.000 description 1
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 1
- IEVADDDOVGMCSI-UHFFFAOYSA-N 2-hydroxybutyl 2-methylprop-2-enoate Chemical compound CCC(O)COC(=O)C(C)=C IEVADDDOVGMCSI-UHFFFAOYSA-N 0.000 description 1
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 1
- GNSFRPWPOGYVLO-UHFFFAOYSA-N 3-hydroxypropyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCO GNSFRPWPOGYVLO-UHFFFAOYSA-N 0.000 description 1
- QZPSOSOOLFHYRR-UHFFFAOYSA-N 3-hydroxypropyl prop-2-enoate Chemical compound OCCCOC(=O)C=C QZPSOSOOLFHYRR-UHFFFAOYSA-N 0.000 description 1
- NDWUBGAGUCISDV-UHFFFAOYSA-N 4-hydroxybutyl prop-2-enoate Chemical compound OCCCCOC(=O)C=C NDWUBGAGUCISDV-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical class S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 description 1
- 241000047703 Nonion Species 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
- HJZGNWSIJASHMX-UHFFFAOYSA-N butyl acetate;ethane-1,2-diol Chemical compound OCCO.CCCCOC(C)=O HJZGNWSIJASHMX-UHFFFAOYSA-N 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- WNAHIZMDSQCWRP-UHFFFAOYSA-N dodecane-1-thiol Chemical compound CCCCCCCCCCCCS WNAHIZMDSQCWRP-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- UIWXSTHGICQLQT-UHFFFAOYSA-N ethenyl propanoate Chemical compound CCC(=O)OC=C UIWXSTHGICQLQT-UHFFFAOYSA-N 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- DNTMQTKDNSEIFO-UHFFFAOYSA-N n-(hydroxymethyl)-2-methylprop-2-enamide Chemical compound CC(=C)C(=O)NCO DNTMQTKDNSEIFO-UHFFFAOYSA-N 0.000 description 1
- KZCOBXFFBQJQHH-UHFFFAOYSA-N octane-1-thiol Chemical compound CCCCCCCCS KZCOBXFFBQJQHH-UHFFFAOYSA-N 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
［産業上の利用分野］
本発明は、官能基を含む低分子量のビニル系共
重合体エマルジヨンの水性上塗り剤に関する。
［従来の技術及び発明が解決しようとする課題］
従来、下地基材の上塗り的開して、溶剤系樹脂
が、有機質塗膜表面、例えば合成樹脂塗膜表面、
又は無機質、例えばセメント、モルタル、スレー
ト板木質などの表面の美麗化粧に使用されている
が、溶剤による安全性、毒性などの問題がある。
また、従来の水性上塗り剤は、下塗り塗膜との密
着性、透明性、耐汚染性、耐水性、耐候性、光沢
及び乾燥性などが劣るため、実用上の制約があつ
た。
［発明の構成］
本発明者らは前記の問題点を改善すべく鋭意研
究の結果、乳化重合により得られた特定のビニル
系共重合体エマルジヨンに造膜助剤を添加する
と、下地基材、特に有機質塗膜表面との密着性、
透明性、耐水性、耐汚染性、耐候性、光沢及び乾
燥性に優れていることを見いだし、本発明を完成
するに至つた。
即ち、発明の水性上塗り剤は、(A)(1)水酸基を含
有する単量体２〜30重量％と(2)スチレン、アクリ
ル酸エステルを主成分とし、0.3〜５重量％の不
飽和カルボン酸を含む共重合可能なビニル系単量
体98〜70重量％とからなる単量体を、界面活性
剤、重合触媒、及び前記単量体の総量100重量部
に対して0.1〜10重量部の重合度調整剤の存在下、
75〜100℃の温度で乳化重合した、数平均分子量
５〜13万の共重合体を含むエマルジヨンと、(B)こ
のエマルジヨンの固形分100重量部に対して５〜
25重量部の造膜助剤とを含む。
以下に本発明の詳細を説明する。
該エマルジヨンは、乳化重合工程で重合度調整
剤を添加することにより得られる。重合度調整剤
としては、例えばメルカプタン類、具体的にはオ
クチルメルカプタン、ラウリルメルカプタン、ｔ
−ドデシルメルカプタンなどが挙げられる。重合
度調整剤は、全単量体100重量部に対して0.1〜10
重量部、好ましくは0.5〜５重量部添加される。
該エマルジヨンの共重合体の数平均分子量は５〜
13万である。
また水酸基を含有する単量体の使用量は、全単
量体中２〜30重量％、好ましくは５〜20重量％で
ある。２重量％未満では密着性、透明性が劣り、
30重量％を越えると耐水性が劣る。
水酸基を含有する単量体と共重合可能なビニル
系単量体の使用量は、全単量体中98〜70重量％、
好ましくは95〜80重量％である。
水酸基を含有する単量体としては、例えばメタ
クリル酸ヒドロキシエチル、メタクリル酸ヒドロ
キシプロピル、メタクリル酸ヒドロキシブチル、
アクリル酸ヒドロキシエチル、アクリル酸ヒドロ
キシプロピル、アクリル酸ヒドロキシブチルなど
が挙げられる。
また水酸基を含有する単量体と共重合可能なビ
ニル系単量体は、スチレン、アクリル酸エステル
類を主成分とし、不飽和カルボン酸を含む。アク
リル酸エステル類としては、例えばアクリル酸エ
チル、アクリル酸ブチル、アクリル酸２−エチル
ヘキシルなどが挙げられる。不飽和カルボン酸と
しては、メタクリル酸、アクリル酸などが挙げら
れる。
共重合可能なビニル系単量体は、メタクリル酸
メチルなどのメタクリル酸エステル、アクリロニ
トリル、塩化ビニル、塩化ビニリデン、アクリル
アミド、Ｎ−メチロールメタクリルアミド、酢酸
ビニル、プロピオン酸ビニルなどを含んでいても
よい。
不飽和カルボン酸の量は全単量体中0.3〜５重
量％である。
水酸基を含有する単量体と共重合可能なビニル
系単量体として、スチレン、アクリル酸エステル
類を主成分とし、0.3〜５重量％の不飽和カルボ
ン酸を組合わせて得られるエマルジヨンを用いる
と、下塗り塗膜との密着性、透明性、耐水性、耐
汚染性、光沢、耐候性などを格段に向上すること
から好ましく使用される。
該エマルジヨンは上記の重合調整剤の存在下、
75〜100℃の温度で通常の乳化重合を行うことに
より得られる。
乳化重合に使用される界面活性剤は限定はされ
ないが、アニオン性界面活性剤、例えば高級アル
コール硫酸塩、アルキルベンゼンスルホン酸塩、
アルキルフエニルポリオキシエチレン硫酸塩な
ど、ノニオン性界面活性剤、例えばポリオキシエ
チレンアルキルエステル、ポリオキシエチレンア
ルキルエーテル、ポリオキシエチレンアルキルフ
エニルエーテルなどが挙げられる。これらの乳化
剤は１種又は２種以上使用される。
重合触媒としては、過硫酸塩、例えば過硫酸カ
リウム、過硫酸アンモニウムなどが使用できる。
造膜助剤は、該エマルジヨンの常温造膜に必要
なもので、且つ乾燥性、耐汚染性の優れたものが
好ましい。通常、該エマルジヨンの造膜温度が０
℃以下になる量添加すればよい。造膜助剤の添加
量は、固形分40重量％のエマルジヨン100重量部
に対して２〜10重量部、すなわちエマルジヨンの
固形分100重量部に対して５〜25重量部である。
造膜助剤としては、例えばブチルモノグリコー
ルアセテート、エチレングリコールｎ−ブチルア
セテートなどが挙げられる。
また、本発明の該エマルジヨンの乾燥性、密着
性を向上させるために、特に水溶性溶剤と分散剤
との混合物を該エマルジヨン100重量部に対し５
〜20重量部添加するのが好ましい。水溶性溶剤と
しては、例えばエタノール、イソプロピルアルコ
ール、ブチルモノグリコールなどが挙げられる。
分散剤としては、例えばノニオン性界面活性剤の
ポリオキシエチレンアルキルフエニルエーテル、
ポリオキシエチレンアルキルエステル、ポリオキ
シエチレンアルキルエーテルなどが挙げられる。
本発明の水性上塗り剤は、無機質表面及び有機
質塗膜表面に適用されるが、特に有機質塗膜のウ
レタン系樹脂、エポキシ系樹脂、アクリル系樹脂
表面などから成るカラー舗装材に適用する上で有
用である。
［発明の効果］
本発明の水性上塗り剤は、下地基材との密着
性、透明性、耐水性、耐汚染性、耐候性、光沢及
び乾燥性に優れている。
［実施例］
以下に本発明の実施例及び比較例を示す。な
お、「部」及び「％」は重量基準である。
実施例 備 考
(1) 水
(2) 水
(3) 過硫酸カリウム
(4) アニオン性界面活性剤30.0部
5.2部
0.2部
1.1部Ａ液
（トライントンＸ−200；ローム アンド ハ
ース社製アルキルアリルポリエーテルスルホン
酸ナトリウム）
(5) スチレン
(6) アクリル酸ブチル
(7) メタクリル酸ヒドロキシエチル
(8) アクリル酸
(9) ｔ−ドデシルメルカプタン20.0部
12.0部
6.0部
0.2部
0.4部Ｂ液
(10)イリ プロピルアルコール
(11) ブチルモノグリコール
(12) ノニオン性界面活性剤3.0部
7.0部
1.5部Ｃ液
（ノニオンNS−210；日本油脂社製 ポリオキシ
エチレンアルキルフエノールエーテル）
(13) 水
(14) ブチルモノグリコール
アセテート10.4部
3.0部Ｄ液
100.0部
前記(1)を重合缶に仕込み、89℃に加熱し、Ａ液
の80％とＢ液を89℃で３時間逐次添加し、乳化重
合を行い、80℃で２時間熟成した。その後、室温
まで冷却してからＣ液及びＤ液を添加混合し、ア
ンモニアで中和し、共重合体の数平均分子量約８
万、固形分40％、粘度100cps、PH８の水性上塗り
剤を得た。
この水性上塗り剤による塗膜物性を第１表にま
とめたが、密着性、耐汚染性、透明性、耐水性、
耐候性、光沢及び乾燥性に優れていることがわか
つた。
比較例
実施例で(7)のメタクリル酸ヒドロシキエチル及
び(9)のｔ−ドデシルメルカプタンを使用せず、こ
れらの代りに(6)のアクリル酸ブチルを増量して実
施例と同様の方法で乳化重合し、実施例と同じＣ
液及びＤ液を添加し、アンモニアで中和した。得
られた水性上塗り剤は、固形分40％、粘度
200cps、PH8.5であり、この水性上塗り剤による
塗膜物性を第１表にまとめたが、密着性、耐汚染
性、透明性、耐水性、耐候性、光沢及び乾燥性に
劣つていることがわかつた。
[Industrial Field of Application] The present invention relates to an aqueous top coat of a low molecular weight vinyl copolymer emulsion containing a functional group. [Prior Art and Problems to be Solved by the Invention] Conventionally, when a top coat is applied to a base substrate, a solvent-based resin is applied to the surface of an organic coating film, for example, a synthetic resin coating surface,
It is also used for beautifying the surfaces of inorganic materials such as cement, mortar, and wood slate boards, but there are problems with safety and toxicity due to solvents.
In addition, conventional water-based topcoats have poor adhesion to the undercoat film, transparency, stain resistance, water resistance, weather resistance, gloss, drying properties, etc., and therefore have practical limitations. [Structure of the Invention] As a result of intensive research to improve the above-mentioned problems, the present inventors found that when a film-forming agent is added to a specific vinyl copolymer emulsion obtained by emulsion polymerization, the underlying base material, In particular, the adhesion to the organic coating surface,
It was discovered that the material has excellent transparency, water resistance, stain resistance, weather resistance, gloss, and drying properties, leading to the completion of the present invention. That is, the aqueous top coating agent of the invention has (A) (1) 2 to 30% by weight of a monomer containing a hydroxyl group and (2) styrene and acrylic acid ester as main components, and 0.3 to 5% by weight of unsaturated carbon. A monomer consisting of 98 to 70% by weight of a copolymerizable vinyl monomer containing an acid is added in an amount of 0.1 to 10 parts by weight per 100 parts by weight of the total amount of the surfactant, polymerization catalyst, and the monomer. In the presence of a polymerization degree regulator,
An emulsion containing a copolymer with a number average molecular weight of 50,000 to 130,000, emulsion polymerized at a temperature of 75 to 100°C, and (B) 5 to 100 parts by weight of the solid content of this emulsion.
25 parts by weight of a film-forming agent. The details of the present invention will be explained below. The emulsion can be obtained by adding a polymerization degree regulator during the emulsion polymerization process. As the polymerization degree regulator, for example, mercaptans, specifically octyl mercaptan, lauryl mercaptan, t
-dodecyl mercaptan and the like. The degree of polymerization regulator is 0.1 to 10 parts by weight per 100 parts by weight of total monomers.
It is added in an amount of 0.5 to 5 parts by weight, preferably 0.5 to 5 parts by weight.
The number average molecular weight of the copolymer of the emulsion is 5 to
It is 130,000. The amount of the monomer containing a hydroxyl group used is 2 to 30% by weight, preferably 5 to 20% by weight based on the total monomers. If it is less than 2% by weight, the adhesion and transparency will be poor;
If it exceeds 30% by weight, water resistance will be poor. The amount of vinyl monomer copolymerizable with a monomer containing a hydroxyl group is 98 to 70% by weight of the total monomers.
Preferably it is 95 to 80% by weight. Examples of monomers containing hydroxyl groups include hydroxyethyl methacrylate, hydroxypropyl methacrylate, hydroxybutyl methacrylate,
Examples include hydroxyethyl acrylate, hydroxypropyl acrylate, and hydroxybutyl acrylate. The vinyl monomer copolymerizable with the monomer containing a hydroxyl group contains styrene and acrylic acid esters as main components, and contains an unsaturated carboxylic acid. Examples of acrylic esters include ethyl acrylate, butyl acrylate, and 2-ethylhexyl acrylate. Examples of unsaturated carboxylic acids include methacrylic acid and acrylic acid. The copolymerizable vinyl monomer may include methacrylic acid esters such as methyl methacrylate, acrylonitrile, vinyl chloride, vinylidene chloride, acrylamide, N-methylolmethacrylamide, vinyl acetate, vinyl propionate, and the like. The amount of unsaturated carboxylic acid is from 0.3 to 5% by weight based on the total monomers. When using an emulsion obtained by combining styrene and acrylic acid esters as the main components and 0.3 to 5% by weight of unsaturated carboxylic acid as a vinyl monomer copolymerizable with a monomer containing a hydroxyl group, , is preferably used because it significantly improves adhesion with the undercoat film, transparency, water resistance, stain resistance, gloss, weather resistance, etc. The emulsion is prepared in the presence of the above polymerization regulator,
It is obtained by carrying out conventional emulsion polymerization at a temperature of 75-100°C. Surfactants used in emulsion polymerization include, but are not limited to, anionic surfactants such as higher alcohol sulfates, alkylbenzene sulfonates,
Examples include nonionic surfactants such as alkyl phenyl polyoxyethylene sulfates, such as polyoxyethylene alkyl esters, polyoxyethylene alkyl ethers, and polyoxyethylene alkyl phenyl ethers. One or more of these emulsifiers may be used. As the polymerization catalyst, persulfates such as potassium persulfate and ammonium persulfate can be used. The film-forming aid is preferably one that is necessary for film-forming the emulsion at room temperature and has excellent drying properties and stain resistance. Usually, the film forming temperature of the emulsion is 0.
It may be added in an amount that will bring the temperature below ℃. The amount of the coalescent agent added is 2 to 10 parts by weight per 100 parts by weight of the emulsion having a solid content of 40% by weight, that is, 5 to 25 parts by weight per 100 parts by weight of the solid content of the emulsion. Examples of the film forming aid include butyl monoglycol acetate, ethylene glycol n-butyl acetate, and the like. In order to improve the drying properties and adhesion of the emulsion of the present invention, a mixture of a water-soluble solvent and a dispersant may be added to 100 parts by weight of the emulsion.
It is preferable to add up to 20 parts by weight. Examples of water-soluble solvents include ethanol, isopropyl alcohol, butyl monoglycol, and the like.
Examples of dispersants include nonionic surfactants such as polyoxyethylene alkyl phenyl ether,
Examples include polyoxyethylene alkyl ester and polyoxyethylene alkyl ether. The water-based topcoat of the present invention can be applied to inorganic surfaces and organic coating surfaces, but is particularly useful for color paving materials made of organic coatings such as urethane resin, epoxy resin, and acrylic resin surfaces. It is. [Effects of the Invention] The aqueous top coat of the present invention has excellent adhesion to the underlying base material, transparency, water resistance, stain resistance, weather resistance, gloss, and drying properties. [Example] Examples and comparative examples of the present invention are shown below. Note that "parts" and "%" are based on weight. Examples Notes (1) Water (2) Water (3) Potassium persulfate (4) Anionic surfactant 30.0 parts 5.2 parts 0.2 parts 1.1 parts Solution A (Tryton X-200; Alkylaryl manufactured by Rohm and Haas) Sodium polyether sulfonate) (5) Styrene (6) Butyl acrylate (7) Hydroxyethyl methacrylate (8) Acrylic acid (9) T-dodecyl mercaptan 20.0 parts 12.0 parts 6.0 parts 0.2 parts 0.4 parts B liquid (10) Propyl alcohol (11) Butyl monoglycol (12) Nonionic surfactant 3.0 parts 7.0 parts 1.5 parts Liquid C (Nonion NS-210; manufactured by NOF Corporation, polyoxyethylene alkyl phenol ether) (13) Water (14) Butyl Monoglycol acetate 10.4 parts 3.0 parts D liquid 100.0 parts The above (1) was placed in a polymerization can, heated to 89°C, and 80% of liquid A and liquid B were sequentially added at 89°C for 3 hours to perform emulsion polymerization. It was aged at 80°C for 2 hours. Then, after cooling to room temperature, liquids C and D were added and mixed, neutralized with ammonia, and the number average molecular weight of the copolymer was about 8.
A water-based top coat with a solid content of 40%, a viscosity of 100 cps, and a pH of 8 was obtained. Table 1 summarizes the physical properties of the coating film produced by this water-based topcoat, including adhesion, stain resistance, transparency, water resistance,
It was found to have excellent weather resistance, gloss and drying properties. Comparative Example The same method as in Example was carried out except that hydroxyethyl methacrylate (7) and t-dodecyl mercaptan (9) were not used, but instead of these, butyl acrylate (6) was increased. Emulsion polymerization and the same C as in Example
Solution and Solution D were added and neutralized with ammonia. The resulting water-based topcoat has a solids content of 40% and a viscosity of
200cps, PH8.5, and the physical properties of the coating film produced by this water-based topcoat are summarized in Table 1, but it is inferior in adhesion, stain resistance, transparency, water resistance, weather resistance, gloss, and drying properties. I understood.
【表】【table】
【表】【table】
Claims (1)
と(2)スチレン、アクリル酸エステルを主成分と
し、0.3〜５重量％の不飽和カルボン酸を含む
共重合可能なビニル系単量体98〜70重量％とか
らなる単量体を、界面活性剤、重合触媒、及び
前記単量体の総量100重量部に対して0.1〜10重
量部の重合度調整剤の存在下、75〜100℃の温
度で乳化重合した、数平均分子量５〜13万の共
重合体を含むエマルジヨンと、 (B)このエマルジヨンの固形分100重量部に対して
５〜25重量部の造膜助剤とを含む水性上塗り
剤。[Claims] 1 (A) (1) 2 to 30% by weight of a monomer containing a hydroxyl group
and (2) 98 to 70% by weight of a copolymerizable vinyl monomer containing styrene and acrylic acid ester as main components and 0.3 to 5% by weight of unsaturated carboxylic acid. emulsion polymerization at a temperature of 75 to 100°C in the presence of 0.1 to 10 parts by weight of a polymerization degree modifier based on 100 parts by weight of the total amount of the monomer, polymerization catalyst, and the above monomer, and has a number average molecular weight of 50,000 to 130,000. and (B) an aqueous topcoat agent comprising 5 to 25 parts by weight of a film-forming agent based on 100 parts by weight of the solid content of the emulsion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4612982A JPS58162670A (en) | 1982-03-23 | 1982-03-23 | Water-based top-coating material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4612982A JPS58162670A (en) | 1982-03-23 | 1982-03-23 | Water-based top-coating material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58162670A JPS58162670A (en) | 1983-09-27 |
| JPH0547589B2 true JPH0547589B2 (en) | 1993-07-19 |
Family
ID=12738370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4612982A Granted JPS58162670A (en) | 1982-03-23 | 1982-03-23 | Water-based top-coating material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58162670A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5006413A (en) * | 1989-09-05 | 1991-04-09 | E. I. Du Pont De Nemours And Company | Waterbased methylol (meth)acrylamide acrylic polymer and polyurethane containing coating composition |
| US5314945A (en) * | 1990-12-03 | 1994-05-24 | E. I. Du Pont De Nemours And Company | Waterbased coating compositions of methylol(meth)acrylamide acrylic polymer, polyurethane and melamine crosslinking agent |
| US8252425B2 (en) * | 2007-12-12 | 2012-08-28 | Ashland Licensing And Intellectual Property Llc | Acrylic emulsion pressure sensitive adhesive composition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5084651A (en) * | 1973-11-19 | 1975-07-08 | ||
| JPS50100130A (en) * | 1974-01-09 | 1975-08-08 |
-
1982
- 1982-03-23 JP JP4612982A patent/JPS58162670A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5084651A (en) * | 1973-11-19 | 1975-07-08 | ||
| JPS50100130A (en) * | 1974-01-09 | 1975-08-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58162670A (en) | 1983-09-27 |
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