TW202210536A - 無甲醛之水性可固化組合物 - Google Patents
無甲醛之水性可固化組合物 Download PDFInfo
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- TW202210536A TW202210536A TW110118604A TW110118604A TW202210536A TW 202210536 A TW202210536 A TW 202210536A TW 110118604 A TW110118604 A TW 110118604A TW 110118604 A TW110118604 A TW 110118604A TW 202210536 A TW202210536 A TW 202210536A
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- curable composition
- weight
- ethylenically unsaturated
- acrylate
- acid
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- -1 -OH Chemical group 0.000 claims description 21
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- VSVCAMGKPRPGQR-UHFFFAOYSA-N propan-2-one;sulfurous acid Chemical compound CC(C)=O.OS(O)=O VSVCAMGKPRPGQR-UHFFFAOYSA-N 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- XWGJFPHUCFXLBL-UHFFFAOYSA-M rongalite Chemical compound [Na+].OCS([O-])=O XWGJFPHUCFXLBL-UHFFFAOYSA-M 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000001273 sulfonato group Chemical class [O-]S(*)(=O)=O 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
- 150000000000 tetracarboxylic acids Chemical class 0.000 description 1
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- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
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Abstract
本揭示案係關於一種無甲醛之水性可固化組合物,其包括:
A)由單體混合物聚合之聚合物,該單體混合物包括
(a)30-90 wt%之C1
-C10
丙烯酸烷酯;
(b)10-60 wt%之芳乙烯(vinylaromatics);
(c)0.5-10 wt%之具有至少兩個羧酸基之烯系不飽和化合物;
(d)0-10 wt%之具有一個羧酸基之烯系不飽和酸;
(e)0-5 wt%之其他烯系不飽和單體;
其中百分比係以該單體混合物之總重量計;以及
B)鈦催化劑。
Description
本揭示案係關於一種無甲醛之水性可固化組合物,特定言之用於紙、紡織物及非織物的無甲醛之水性可固化組合物,且亦係關於一種包括基板及無甲醛之水性可固化組合物的製品。
用於紡織物及非織物應用之傳統黏合劑含有N-羥甲基丙烯醯胺(NMA)作為官能性單體,其在固化之後為黏合劑引入極佳的抗水性(濕強度)及抗溶劑性(異丙醇強度)。然而,含有NMA之黏合劑在加熱時會釋放甲醛。固化之後具有極佳抗水性(濕強度)及抗溶劑性(異丙醇強度)的無甲醛之黏合劑產物為期望的。
因此,所屬領域中強烈需要替代的無甲醛之水性可固化組成物,其在固化之後具有期望的性能,諸如極佳的抗水性(濕強度)及抗溶劑性(異丙醇強度)。
本揭示案提供一種無甲醛之水性可固化組合物,其在固化之後具有期望的性能,諸如極佳的抗水性(濕強度)及抗溶劑性(異丙醇強度,IPA強度)。
本發明人發現,將廣泛用於合成聚酯之鈦催化劑引入丙烯酸酯黏合劑系統可加速固化過程且引入極佳的性能。
在第一態樣中,本揭示案係關於一種無甲醛之水性可固化組合物,其包括:
A)由單體混合物聚合之聚合物,該單體混合物包括
(a)30-90 wt%之C1
-C10
丙烯酸烷酯;
(b)10-60 wt%之芳乙烯(vinylaromatics);
(c)0.5-10 wt%之具有至少兩個羧酸基之烯系不飽和化合物;
(d)0-10 wt%之具有一個羧酸基之烯系不飽和酸;
(e)0-5 wt%之其他烯系不飽和單體;
其中百分比係以該單體混合物之總重量計;以及
B)鈦催化劑。
在第二態樣中,本揭示案提供一種製品,其包括基板及無甲醛之水性可固化組合物,該無甲醛之水性可固化組合物包括:
A)由單體混合物聚合之聚合物,該單體混合物包括
(a)30-90 wt%之C1
-C10
丙烯酸烷酯;
(b)10-60 wt%之芳乙烯;
(c)0.5-10 wt%之具有至少兩個羧酸基之烯系不飽和化合物;
(d)0-10 wt%之具有一個羧酸基之烯系不飽和酸;
(e)0-5 wt%之其他烯系不飽和單體;
其中百分比係以該單體混合物之總重量計;以及
B)鈦催化劑。
在第三態樣中,本揭示案提供一種處理基板之方法,其包括使無甲醛之水性可固化組合物與基板接觸,且接著乾燥並固化無甲醛之水性可固化組合物,其中無甲醛之水性可固化組合物包括:
A)由單體混合物聚合之聚合物,該單體混合物包括
(a)30-90 wt%之C1
-C10
丙烯酸烷酯;
(b)10-60 wt%之芳乙烯;
(c)0.5-10 wt%之具有至少兩個羧酸基之烯系不飽和化合物;
(d)0-10 wt%之具有一個羧酸基之烯系不飽和酸;
(e)0-5 wt%之其他烯系不飽和單體;
其中百分比係以該單體混合物之總重量計;以及
B)鈦催化劑。
如所主張的,應理解前文一般描述及以下詳細描述兩者皆僅為例示性及解釋性的,且並不限制本發明。
除非另外規定,否則本文中所用之所有技術及科學術語具有與本發明所屬領域之一般技藝者通常所理解相同之含義。此外,本文中所提及之所有公開案、專利申請案、專利及其他參考文獻均以引用之方式併入。
如本文所揭示,術語「組合物」、「調配物」或「混合物」係指不同組分之物理摻合物,其藉由物理手段簡單地混合不同組分來獲得。
如本文所揭示,術語「玻璃轉化溫度」(Tg)可藉由各種技術量測,包含例如差示掃描熱量測定(differential scanning calorimetry,DSC)或藉由使用福克斯方程(Fox equation)計算。
貫穿本文,詞語片段「(甲基)丙烯醯基」係指「甲基丙烯醯基」及「丙烯醯基」兩者。舉例而言,(甲基)丙烯酸係指甲基丙烯酸及丙烯酸兩者,(甲基)丙烯酸甲酯係指甲基丙烯酸甲酯及丙烯酸甲酯兩者,且(甲基)丙烯醯胺係指甲基丙烯酸醯胺及丙烯醯胺兩者。
本文中之「水性」組合物或分散體意謂粒子分散於水性介質中。本文中之「水性介質」意謂水及以介質之重量計0至30重量%之可與水混溶之化合物,諸如乙醇、二醇、二醇醚、二醇酯及其類似物。
本揭示案提供一種無甲醛之水性可固化黏合劑組合物,其包括:
A)由單體混合物聚合之聚合物,該單體混合物包括
(a)30-90 wt%之C1
-C10
丙烯酸烷酯;
(b)10-60 wt%之芳乙烯;
(c)0.5-10 wt%之具有至少兩個羧酸基之烯系不飽和化合物;
(d)0-10 wt%之具有一個羧酸基之烯系不飽和酸;
(e)0-5 wt%之其他烯系不飽和單體;
其中百分比係以該單體混合物之總重量計;以及
B)鈦催化劑。
較佳地,C1
-C10
(甲基)丙烯酸烷酯為C1
-C8
(甲基)丙烯酸烷酯。C1
-C8
(甲基)丙烯酸烷酯可選自丙烯酸乙酯、甲基丙烯酸乙酯、丙烯酸丙酯、甲基丙烯酸丙酯、丙烯酸正丁酯及正丁基、丙烯酸正戊酯、甲基丙烯酸正戊酯、丙烯酸正己酯、甲基丙烯酸正己酯、丙烯酸2-乙基己酯、甲基丙烯酸2-乙基己酯,或其中之任兩者或更多者之混合物。更佳地,C1
-C10
(甲基)丙烯酸烷酯係選自丙烯酸丁酯、甲基丙烯酸丁酯或其混合物。
較佳地,單體混合物中之C1
-C10
(甲基)丙烯酸烷酯(a)之量可不小於30重量%、不小於40重量%、不小於50重量%、不小於55重量%、不小於60重量%、不小於65重量%,或不小於70重量%,但不大於90%重量%,較佳地但不大於85重量%,更佳地但不大於80重量%。更佳地,C1
-C10
(甲基)丙烯酸烷酯之量為單體混合物之55至85重量%,或單體混合物之70至80重量%。
單體芳乙烯(b)可為苯乙烯、α-甲基苯乙烯或其混合物。
較佳地,單體混合物中之芳乙烯(b)之量可不小於10重量%,較佳不小於12重量%,更佳不小於15重量%,甚至更佳不小於18重量%;但不大於60重量%,較佳不大於50重量%,更佳不大於40重量%,甚至更佳不大於30重量%,再更佳不大於25重量%,或不大於20重量%。
具有至少兩個羧酸基之烯系不飽和化合物(c)為例如順丁烯二酸、伊康酸(itaconic acid)、反丁烯二酸或其中之任兩者或更多者之混合物。
極其較佳為伊康酸。
較佳地,單體混合物中之具有至少兩個羧酸基之烯系不飽和化合物(c)之量可不小於0.5重量%,較佳不小於1重量%,更佳不小於1.5重量%,甚至更佳不小於2重量%,但不大於10重量%,較佳不大於8重量%,更佳不大於6重量%,甚至更佳不大於5重量%,再更佳不大於3重量%。
具有一個羧酸基之烯系不飽和酸(d)可為丙烯酸及/或甲基丙烯酸。較佳地,具有一個羧酸基之烯系不飽和酸(d)為丙烯酸。
具有一個羧酸基之烯系不飽和酸(d)為視情況選用之組分。較佳地,單體混合物中之具有一個羧酸基之烯系不飽和化合物(d)之量可不小於0.5重量%,較佳不小於1重量%,更佳不小於1.5重量%,甚至更佳不小於2重量%,但不大於10重量%、較佳不大於8重量%、更佳不大於6重量%、甚至更佳不大於5重量%,再更佳不大於3重量%。
其他烯系不飽和單體(e)為視情況選用之組分且可為除(a)-(d)以外的任何類別。合適之實例包含含有羥基之烯系不飽和單體、(甲基)丙烯醯胺或含磷官能性單體。含有羥基之烯系不飽和單體可為甲基丙烯酸羥基乙酯(hydroxylethyl methacrylate;HEMA)。含磷官能性單體可為含磷(甲基)丙烯酸酯,諸如(甲基)丙烯酸磷乙酯、(甲基)丙烯酸磷丙酯、(甲基)丙烯酸磷丁酯、其鹽及其混合物;CH2
=C(R)-C(O)-O-(Rl
O)n
-P(O)(OH)2
,其中R=H或CH3
,R1
=烷基,及n=2-6,諸如均可自Solvay獲得之SIPOMER PAM-100、SIPOMER PAM-200及SIPOMER PAM-300;磷烷氧基(甲基)丙烯酸酯,諸如磷酸化乙二醇(甲基)丙烯酸酯、磷酸化二乙二醇(甲基)丙烯酸酯、磷酸化三乙二醇(甲基)丙烯酸酯、磷酸化丙二醇(甲基)丙烯酸酯、磷酸化二丙二醇(甲基)丙烯酸酯、磷酸化三丙二醇(甲基)丙烯酸酯、其鹽及其混合物。
單體混合物中之含羥基之烯系不飽和單體之量可不小於0.1重量%,較佳不小於0.2重量%,更佳不小於0.5重量%,甚至更佳不小於0.8重量%,但不大於5重量%,較佳不大於4重量%,更佳不大於3重量%,甚至更佳不大於2重量%,再更佳不大於1.5重量%。
較佳地,本申請案之單體混合物不包括C1-C18烷酸或α-烯烴(諸如乙烯或丙烯)之乙烯酯。
在一個較佳實施例中,聚合物A)係藉由乳液聚合製備,且因此為乳液聚合物。
在乳液聚合之情況下,使用適合的界面活性劑系統及/或保護膠體或穩定劑。
適合之界面活性劑系統之實例為本領域中已知之界面活性劑系統,且包含陰離子、非離子、陽離子或兩性乳化劑及其混合物。陰離子界面活性劑之實例包含但不限於烷基硫酸鹽、乙氧基化醇之硫酸鹽、芳基磺酸鹽、乙氧基化醇之磷酸鹽、磺基丁二酸鹽、乙氧基化烷基酚之硫酸鹽及磺酸鹽,及其混合物。非離子界面活性劑之實例包含但不限於乙氧基化醇、乙氧基化烷基酚及其混合物。陽離子界面活性劑之實例包含但不限於乙氧基化脂肪胺。以單體之總重量計,界面活性劑之典型重量為0.1至5.0 wt%,且更佳0.3至5.0 wt%,且最佳0.5至3.0 wt%。藉由此項技術中熟知之習知方法利用界面活性劑。在一個實施例中,製備組合物之製程包含在聚合反應之前用界面活性劑系統乳化單體混合物。
界面活性劑商標名之實例為AEROSOL® A-102、Disponil® FES 77、Dowfax™ 2A1、Abex® 2535及RHODACAL® DS-4。
用於乳液聚合之水溶性引發劑為例如過氧化二硫酸之銨鹽及鹼金屬鹽,例如過氧二硫酸鈉、過硫酸鈉、過硫酸銨、過氧化氫或有機過氧化物,例如三級丁基過氧化氫。
稱作還原-氧化(氧化還原)引發劑系統之物質亦為適合的。
氧化還原引發劑系統係由至少一種通常為無機還原劑及一種有機或無機氧化劑構成。
氧化組分包括例如上文已經提及之乳液聚合引發劑。
還原組分包括例如亞硫酸之鹼金屬鹽,諸如亞硫酸鈉、亞硫酸氫鈉;二亞硫酸(disulfurous acid)之鹼金屬鹽,諸如亞硫酸氫鈉;亞硫酸氫鹽與脂族醛及酮之加成化合物,諸如丙酮亞硫酸氫鹽;或還原劑,諸如羥基甲烷亞磺酸及其鹽,或抗壞血酸。氧化還原引發劑系統可與可溶性金屬化合物一起使用,該等可溶性金屬化合物之金屬組分能夠以複數個價態存在。
慣用氧化還原引發劑系統之實例包含抗壞血酸/硫酸鐵(II)/過氧二硫酸鈉、三級丁基過氧化氫/亞硫酸氫鈉及三級丁基過氧化氫/羥基甲烷亞磺酸鈉。單獨的組分,例如還原組分,亦可為混合物:例如羥基甲烷亞磺酸之鈉鹽與亞硫酸氫鈉之混合物。
此等化合物主要以水溶液形式使用,濃度下限係藉由分散體中可接受之水的量測定且濃度上限係藉由各別化合物於水中之溶解度測定。濃度通常為以溶液計0.1至30重量%,較佳0.5至20重量%,尤其較佳1.0至10重量%。
以待聚合之單體計,引發劑之量通常為0.1至10重量%,較佳0.3至5重量%。兩種或更多種不同引發劑亦可用於乳液聚合。
乳液聚合一般在30℃至130℃,較佳60℃至95℃下進行。聚合介質可由單獨的水或水與可與水混溶之液體(諸如甲醇)之混合物中之任一者構成。較佳地,僅使用水。乳液聚合可以分批操作或以進料過程之形式進行,包含分階段或梯度程序。優先考慮將聚合混合物之一部分以初加料形式引入且加熱至聚合溫度的進料過程,開始此初加料之聚合,且隨後通常藉助於兩個或更多個空間上分離之進料流將聚合混合物之其餘部分供應至聚合區,其中一或多者包括呈直鏈或乳化形式之單體,在各階段或在濃度梯度下連續地進行此添加,且在該添加期間維持聚合。亦可為了例如更有效地設定粒度,在聚合之初加料中包含聚合物種子。
在自由基水性乳液聚合過程中將引發劑添加至聚合容器中之方式為熟習此項技術者所已知。其可全部包含於聚合容器之初加料中,或以其在自由基水性乳液聚合過程中消耗之速率連續或分階段引入。在各特定情況下,此將視引發劑系統之化學性質及聚合反應溫度而定。較佳在初加料中包含一份且以消耗其之速率將其餘部分供應至聚合區。
為了移除殘餘單體,通常在實際乳液聚合結束之後,亦即在單體轉化至少95%之後添加引發劑。
藉由進料過程,可自頂部經由側面或自下方經由反應器底層將單獨的組分添加至反應器中。
在乳液聚合之情況下,獲得固體含量通常為15至75重量%,較佳40至75重量%之水性聚合物分散體。
由此製備之聚合物較佳以其水性分散體之形式使用。
較佳將聚合物分散體之pH調節至大於4.5之pH,且尤其調節至5與9之間的pH。
聚合物之玻璃轉化溫度較佳為-40至70℃,尤其較佳-30至65℃,且極其較佳-25至60℃或-25至5℃。
玻璃轉化溫度可藉由慣用方法,諸如差示熱分析或差示掃描熱量測定(參見例如ASTM 3418/82,中點溫度)測定。
組分B)為鈦催化劑。
鈦催化劑具有式Ti(OR)4
,其中各R獨立地選自由以下組成之群:具有約1至約30個碳原子之烷基、具有約2至約30個碳原子之烯基、具有約3至約30個碳原子之環烷基、具有約6至約30個碳原子之芳烷基,及其兩者或更多者之組合。較佳地,R係獨立地選自由以下組成之群:具有約1至約12個碳原子之烷基、具有約2至約12個碳原子之烯基、具有約3至約12個碳原子之環烷基、具有約6至約12個碳原子之芳烷基,及其中之兩者或更多者之組合。R中之一或多個氫原子視情況經鹵素、-OH、-COOH、-NH2
、-CN或-NH(C1-10
烷基)或-N(C1-10
烷基)2
取代或視情況間雜有-C(=O)-、-C(=O)-NH-、磷醯基、磷醯基氧基、磺醯基或磺醯基氧基。
鈦催化劑可為Ti與有機多元酸之錯合物,其中有機酸可為二元羧酸、三元羧酸、四元羧酸或其混合物,較佳地,有機酸可選自檸檬酸、酒石酸、EDTA、蘋果酸、草酸、戊二酸、己二酸、辛二酸、伊康酸或其混合物。
組分B)之實例可為Tyzor ACtivate 436。
鈦催化劑之量為0.5至10(以重量計)/100重量份之聚合物固體A),特定言之1至8,且極佳地1.5至5重量份/100重量份之聚合物固體A),更佳地2至4重量份/100重量份之聚合物固體A)。
組分B)在該過程中之任何時刻添加。在一個實施例中,其在乳液反應之後添加。
聚合物A)或該聚合物之水性分散體可以簡單方式與組分B)混合。
水性組合物可包括其他添加劑:增稠劑、消泡劑、潤濕劑、機械穩定劑、顏料、填充劑、凍融劑、中和劑、塑化劑、增黏劑(增黏樹脂)、助黏劑及其組合。增黏劑之實例為天然樹脂,諸如松香及其藉由歧化或異構化、聚合、二聚化及/或氫化形成之衍生物。其可以其鹽形式(例如單價或多價相對離子(陽離子))或較佳地以其酯化形式存在。用於酯化之醇可為單羥基或多羥基的。實例為甲醇、乙二醇、二乙二醇、三乙二醇、1,2,3-丙硫醇及新戊四醇。
亦使用烴樹脂,例如未經氫化之脂族C5樹脂、經氫化之脂族C5樹脂、芳族改質之C5樹脂、萜類樹脂、經氫化之C9樹脂及其組合。
逐漸用作增黏劑之其他化合物包含具有較低莫耳重量之聚丙烯酸酯。此等聚丙烯酸酯之重均分子量MW較佳小於30,000。聚丙烯酸酯較佳由至少60重量%,特定言之至少80重量%之C1-C8(甲基)丙烯酸烷酯構成。
較佳增黏劑為天然或化學改質松香。松香係主要由松香酸或其衍生物構成。
增黏劑之以重量計的量較佳為5至100重量份,尤其較佳10至50重量份/100重量份聚合物(固體/固體)。
以黏合劑組合物之總重量計,可固化水性組合物可包括0至5重量%之增稠劑。0至5重量%之所有個別值及子範圍均包含於本文中且揭示於本文中。舉例而言,中和劑之wt%可為0、0.5或1重量%之下限至1、3、或5重量%之上限。實例增稠劑包含但不限於可購自密歇根州米德蘭(Midland, Michigan)陶氏化學公司(The Dow Chemical Company)之ACRYSOL™、UCAR™及CELOSIZE™。
以黏合劑組合物之總重量計,可固化水性組合物可包括0至2重量%之中和劑。0至2重量%之所有個別值及子範圍均包含於本文中且揭示於本文中。舉例而言,中和劑之重量%可為0、0.3或0.5重量%之下限至0.5、1、或2重量%之上限。中和劑通常用於控制pH,從而為所調配之黏合劑組合物提供穩定性。中和劑之實例包含但不限於氨水、胺水溶液及其他無機鹽水溶液。
無甲醛之水性可固化組合物可在120至200℃之溫度下,較佳地在150至180℃之溫度下固化。
無甲醛之水性可固化組合物可用於基板,諸如紙、紡織物或非織物,以形成一種製品。
為了處理基板,該基板可習知地塗佈有無甲醛之水性可固化組合物,諸如浸塗、噴塗刮刀塗法及其類似方法。慣用的施加率為例如5至50 g/m2
(固體,不含水)。
本發明之製品具有良好的性能特性,特定言之,極大的濕強度及/或IPA強度。
本揭示案亦提供一種處理基板之方法,其包括使如本文所描述之無甲醛之水性可固化組合物與基板接觸,且接著乾燥並固化該無甲醛之水性可固化組合物。
該基板可為紙、紡織物或非織物。
使如本文所描述之無甲醛之水性可固化組合物與基板接觸可藉由將基板浸滯於如本文所描述之無甲醛之水性可固化組合物中或將如本文所描述之無甲醛之水性可固化組合物噴塗於基板上來實現。
實例
本發明之一些實施例現將描述於以下實例中,其中除非另外規定,否則所有份數及百分比均以重量計。原料:
* Tyzor ACtivate 436為Ti與檸檬酸之錯合物,其中Ti之含量為5wt%。乳液聚合程序
丙烯酸乳液(A):
表1:原料 | ||
材料 | 說明 | 供應商 |
過硫酸鈉(SPS) | 氧化劑 | 國藥化學試劑(Sinopharm Chemical Reagent) |
RHODACAL DS-4 | 陰離子界面活性劑 | 氰特索爾維集團(Cytec Solvay Group) |
亞硫酸氫鈉(SBS) | 還原劑 | 國藥化學試劑 |
WHATMANTM#4紙 | 沃特曼有限公司(Whatman Ltd.) | |
IPA | 異丙醇 | 國藥化學試劑 |
TRITON™ X-100 | 界面活性劑 | 陶氏化學公司 |
BA(丙烯酸丁酯)、Sty(苯乙烯)、IA(伊康酸)、AA(丙烯酸);HEMA(甲基丙烯酸羥乙酯) | 丙烯酸乳液單體 | 陶氏化學公司 |
Tyzor ACTIVE 436 * | 鈦催化劑 | 道夫凱特(Dorf Ketal) |
Bruggolite FF6 | 還原劑 | 布呂格曼化學(Brüggmann Chemical) |
t- BHP (三級丁基過氧化氫) | 氧化劑 | 國藥化學試劑 |
樣品 | 組成 | 附註 |
SWX1321(A-I1) | 59BA/35St/2.5AA/2.5IA/1HEMA | 本發明樣品,Tg = 5℃ |
SWX1331(A-I2) | 76BA/18St/2.5AA/2.5IA/1HEMA | 本發明樣品,Tg = -25℃ |
SWX1336(A-I3) | 76BA/19St/2.5AA/2.5IA | 本發明樣品,Tg = -25℃ |
1. 丙烯酸乳液( A )之合成
根據以下製程製備以共聚物之乾重計包含59重量% BA、35重量% Sty、2.5重量% AA、2.5重量% IA、1重量% HEMA之SWX1321 。
單體乳液(SWX1321)之製備-將5.77 g RHODACAL DS-4(DS-4) 溶解於475 g去離子水(DI水)中。藉由將以下化學物質緩慢添加至攪拌溶液中來製備乳化單體混合物:6.84 g IA、13.7 g HEMA、34.2 g AA、806.6 g BA、478.5 g Sty。
將含有50.42 g DS4及370 g去離子水(本文中之「DI水」)之溶液置放於配備有熱電偶、冷凝器及攪拌器之5頸5公升圓底燒瓶中,且在氮氣下加熱至70℃。將含27.4 g伊康酸(IA)之255 g 60℃ DI水裝入燒瓶中。隨後將82.8 g單體乳液裝入燒瓶中。接著將含3.72 g過硫酸鈉(SPS)之25 g DI水及含1.86 g亞硫酸氫鈉(SBS)之20 g DI水裝入燒瓶中。當出現放熱峰且溫度在70℃下時,在120分鐘內進料剩餘單體乳液、SPS(2.48 g於50 g DI水中)溶液及SBS(1.24 g於50 g DI水中)溶液。將聚合反應溫度維持在69至71℃下。在完成添加之後,用90 gDI水沖洗含有單體乳液之容器及通向燒瓶之進料管,且將沖洗液添加回燒瓶。隨後將燒瓶保持在70℃下15分鐘。此後,經60分鐘逐步地添加t-BHP(70%,5.03g於48g DI水中)及Bruggolite FF6(4.28g於52g DI水中)之溶液,且將反應物冷卻至室溫。添加110g 20%氫氧化鈉溶液以將pH值調節至6.5至7.5。固體含量為46%。
根據以下製程製備以共聚物之乾重計包含76重量% BA、18重量% Sty、2.5重量% AA、2.5重量% IA、1重量% HEMA之SWX1331
。
單體乳液(SWX1331)之製備-將47.72 g DS-4 溶解於475 g去離子水(DI水)中。藉由將以下化學物質緩慢添加至攪拌溶液中來製備乳化單體混合物:6.84 g IA、13.7 g HEMA
、34.2 g AA、1039.1 g BA、246.1 g Sty。
將含有8 g DS4及370 g去離子水(本文中之「DI水」)之溶液置放於配備有熱電偶、冷凝器及攪拌器之5頸5公升圓底燒瓶中,且在氮氣下加熱至70℃。將含27.4 g伊康酸(IA)之255 g 60℃ DI水裝入燒瓶中。隨後將82.8 g單體乳液裝入燒瓶中。接著將含2.48 g過硫酸鈉(SPS)之25 g DI水及含1.24 g亞硫酸氫鈉(SBS)之20 g DI水裝入燒瓶中。當出現放熱峰且溫度在70℃下時,在120分鐘內進料剩餘單體乳液、SPS(2.48 g於50 g DI水中)溶液及SBS(1.24 g於50 g DI水中)溶液。將聚合反應溫度維持在69至71℃下。在完成添加之後,用90 gDI水沖洗含有單體乳液之容器及通向燒瓶之進料管,且將沖洗液添加回燒瓶。隨後將燒瓶保持在70℃下15分鐘。此後,經60分鐘逐步地添加t-BHP(70%,5.03g於48g DI水中)及Bruggolite FF6(4.28g於52g DI水中)之溶液,且將反應物冷卻至室溫。添加110g 20%氫氧化鈉溶液以將pH值調節至6.5至7.5。固體含量為46%。
根據與SWX1331相同之製程製備SWX1336
,不同之處在於單體乳液之配方:將47.72 DS-4溶解於475 g去離子水(DI水)中。藉由將以下化學物質緩慢添加至攪拌溶液中來製備乳化單體混合物:6.84 g IA、34.2 g AA、1039.1 g丙烯酸丁酯、259.8 g苯乙烯。
2. 乾 / 濕 /IPA 抗拉強度測試
根據表2之調配,將以上原料在適當攪拌15分鐘之情況下調配以獲得的可固化水性組合物。
將一片WHATMANTM紙28cm×46cm浸漬於300 mL所調配乳液中。藉由Mathis浸染機浸染經處理基板,且隨後在150℃下乾燥並固化3分鐘。紙上聚合物之添加量控制在14-16%之間。將固化基板切成1吋×4吋之片段,其中4吋方向為紙之橫向(CD)。在Instron上在乾(未處理)、濕(在0.1% Triton X-100/水溶液中浸沒30分鐘後}及IPA(在異丙醇中浸沒30分鐘後)之處理下測試標本之抗拉強度。濕強度反映黏著劑對水之抗性,且IPA強度反映黏黏著劑對溶劑之抗性。
評估飽和纖維素基板之抗水性。資料顯示於表3中。表 2 :樣品之調配。
*括號()中之值為調配物中之固體比率表 3 :樣品之應用測試。
*∆意謂藉由調配物中之B組分改良濕/IPA強度。
Tyzor ACtivate 436(B) | A-I1(46%) | A-I2(46%) | A-I3(46%) | A-C1(46%) | B與A(固體)之比率 | |
比較實例1 | 100 | 0 | ||||
本發明實例1 | 0.92 | 100 | 2% | |||
本發明實例2 | 1.84 | 100 | 4% | |||
比較實例2 | 100 | 0 | ||||
本發明實例3 | 0.92 | 100 | 2% | |||
本發明實例4 | 1.84 | 100 | 4% | |||
比較實例3 | 100 | 0 | ||||
本發明實例5 | 0.92 | 100 | 2% | |||
本發明實例6 | 1.84 | 100 | 4% |
說明 | 乾強度(公斤力/吋) | 濕強度(公斤力/吋) | ∆* | IPA強度(公斤力/吋) | ∆* | |
比較實例1 | 100% A-I1 | 8.49 | 3.74 | 2.89 | ||
本發明實例1 | 以A-I1之固體計的2% B | 8.83 | 4.08 | 9.1% | 3.21 | 11.1% |
本發明實例2 | 以A-I1之固體計的4% B | 8.65 | 4.09 | 9.3% | 3.25 | 12.4% |
比較實例2 | 100% A-I2 | 6.85 | 2.24 | 2 | ||
本發明實例3 | 以A-I2之固體計的2% B | 6.49 | 2.88 | 28.6% | 2.32 | 16% |
本發明實例4 | 以A-I2之固體計的4% B | 6.64 | 3.06 | 36.6% | 2.5 | 25% |
比較實例3 | 100% A-I3 | 6.16 | 2.17 | 1.37 | ||
本發明實例5 | 以A-I3之固體計的2% B | 6.44 | 2.62 | 20.7% | 1.82 | 32.8% |
本發明實例6 | 以A-I3之固體計的4% B | 6.23 | 2.77 | 27.6% | 1.73 | 26.3% |
強度值愈高表示性能更佳。表3之結果顯示所有實例均不含HCHO。與比較實例1至3相比,調配物中具有B組分的本發明實例1至6顯示濕強度改良9%至40%,及IPA強度改良10%至40%。
認為此改良係來自鈦對於調配物中之羧基與紡織及非編織基板上之羥基之間的反應的催化作用。
無
無
Claims (15)
- 一種無甲醛之水性可固化組合物,其包括: A)由單體混合物聚合之聚合物,該單體混合物包括 (a)30-90 wt%之C1 -C10 丙烯酸烷酯; (b)10-60 wt%之芳乙烯(vinylaromatics); (c)0.5-10 wt%之具有至少兩個羧酸基之烯系不飽和化合物; (d)0-10 wt%之具有一個羧酸基之烯系不飽和酸; (e)0-5 wt%之其他烯系不飽和單體; 其中百分比係以該單體混合物之總重量計;以及 B)鈦催化劑。
- 如請求項1之水性可固化組合物,其中該單體混合物中之C1 -C10 丙烯酸烷酯之量為55-85重量%。
- 如請求項1之水性可固化組合物,其中該C1 -C10 丙烯酸烷酯係選自丙烯酸乙酯、甲基丙烯酸乙酯、丙烯酸丙酯、甲基丙烯酸丙酯、丙烯酸正丁酯及正丁基、丙烯酸正戊酯、甲基丙烯酸正戊酯、丙烯酸正己酯、甲基丙烯酸正己酯、丙烯酸2-乙基己酯、甲基丙烯酸2-乙基己酯,或其中之任兩者或更多者之混合物。
- 如請求項1之水性可固化組合物,其中該芳乙烯係選自苯乙烯、α-甲基苯乙烯或其混合物。
- 如請求項1之水性可固化組合物,其中該單體混合物中之芳乙烯之量為15-35重量%。
- 如請求項1之水性可固化組合物,其中該具有至少兩個羧酸基之烯系不飽和化合物係選自順丁烯二酸、伊康酸(itaconic acid)、反丁烯二酸或其中之任兩者或更多者之混合物。
- 如請求項1之水性可固化組合物,其中該具有一個羧酸基之烯系不飽和酸係選自丙烯酸、甲基丙烯酸或其混合物。
- 如請求項1之水性可固化組合物,其中該等其他烯系不飽和單體(e)係選自含有羥基之烯系不飽和單體、(甲基)丙烯醯胺或含磷官能性單體。
- 如請求項1之水性可固化組合物,其中該鈦催化劑之量為0.5-10(以重量計)/100重量份之聚合物固體A)。
- 如請求項1之水性可固化組合物,其中該鈦催化劑具有式Ti(OR)4 ,其中各R獨立地選自由以下組成之群:具有約1至約30個碳原子之烷基、具有約2至約30個碳原子之烯基、具有約3至約30個碳原子之環烷基、具有約6至約30個碳原子之芳烷基,及其中之兩者或更多者之組合,其中R中之一或多個氫原子視情況經鹵素、-OH、-COOH、-NH2 、-CN或-NH(C1-10 烷基)或-N(C1-10 烷基)2 取代或視情況間雜有-C(=O)-、-C(=O)-NH-、磷醯基、磷醯基氧基、磺醯基或磺醯基氧基; 或該鈦催化劑為Ti與有機多元酸之錯合物。
- 如請求項1之水性可固化組合物,其中該聚合物之玻璃轉化溫度較佳為-40至70℃。
- 一種製品,其包括基板及如請求項1至11中任一項之無甲醛之水性可固化組合物。
- 如請求項12之製品,其中該基板為紙、紡織物或非織物。
- 紡織物或非織物之方法,其包括使如請求項1至11中任一項之無甲醛之水性可固化組合物與基板接觸,且接著乾燥並固化該無甲醛之水性可固化組合物。
- 如請求項14之方法,其中該基板為紙、紡織物或非織物。
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