CN102575432A - 用于纸张和纸板涂覆的新型光泽体系 - Google Patents
用于纸张和纸板涂覆的新型光泽体系 Download PDFInfo
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- CN102575432A CN102575432A CN201080043177XA CN201080043177A CN102575432A CN 102575432 A CN102575432 A CN 102575432A CN 201080043177X A CN201080043177X A CN 201080043177XA CN 201080043177 A CN201080043177 A CN 201080043177A CN 102575432 A CN102575432 A CN 102575432A
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- methyl
- copolymer
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- acrylic acid
- monomers
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- 238000000576 coating method Methods 0.000 title claims abstract description 26
- 239000000123 paper Substances 0.000 title description 27
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- 239000000178 monomer Substances 0.000 claims abstract description 57
- 239000000203 mixture Substances 0.000 claims abstract description 48
- 239000000049 pigment Substances 0.000 claims abstract description 37
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 33
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 33
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000009472 formulation Methods 0.000 claims abstract description 29
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- YPHQUSNPXDGUHL-UHFFFAOYSA-N n-methylprop-2-enamide Chemical compound CNC(=O)C=C YPHQUSNPXDGUHL-UHFFFAOYSA-N 0.000 claims description 21
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 claims description 20
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 16
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 11
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- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
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- BAPJBEWLBFYGME-UHFFFAOYSA-N acrylic acid methyl ester Natural products COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 3
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
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- 125000000217 alkyl group Chemical group 0.000 description 2
- MTHSVFCYNBDYFN-UHFFFAOYSA-N anhydrous diethylene glycol Natural products OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 2
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- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
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- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
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Abstract
本发明涉及一种纸张涂覆或粘结配制物,包含:水性乳剂,其包含衍生自一种或多种单体的共聚物;以及超细高岭土颜料。在某些实施方案中,本发明涉及高Tg胶乳(基本上无膜形成)和超细高岭土的共混物。本发明还涉及一种纸张,包含纤维基质和涂覆或粘结组合物,所述涂覆或粘结组合物包含:水性乳剂,其包含衍生自一种或多种单体的共聚物;以及超细高岭土颜料。
Description
技术领域
本发明涉及超细高岭土和基本上较差薄膜形成的胶乳的共混物及其应用。
背景技术
纸张涂覆中高光泽度(例如>65%)的完成典型地包括使用可以是固体或中空形式的塑性颜料。塑性颜料是″无膜形成的″,即在周围温度和涂覆纸张的干燥和修整(压光(calendaring)或超级压光(super calendaring))的过程中遇到的那些条件下不会凝结。中空球形塑性颜料(HSPP)具有核-壳形态,其中核填充水。在纸张涂覆干燥过程中,空隙中的水可能穿过壳扩散并且留下空气空隙。由于空气和周围聚合物壳的折射率的差异,因此光被有效地散射,从而促进涂层不透明度。在纸张涂覆中使用HSPP导致光泽度、亮度和不透明度的改善,并且被认为比固体塑性颜料更有效(参见美国专利No.6,410,158)。另外,由于片材光泽度、光洁度和不透明度增强,因此打印性能通常改善。片材性能改善的程度取决于HSPP的粒径和空隙体积、使用的其他矿物颜料、以及利用的修整材料的类型和量。取决于期望的光泽度水平,使用的HSPP为颜料的2至20干重%。涂料的颜料部分的剩余物典型地由无机材料构成,例如高岭土、重质碳酸钙(GCC)、滑石(矿物质)、二氧化钛或析出碳酸钙。HSPP的粒径典型地为0.1至1.0微米,并且颗粒混悬在水相中,以及以约25-30干重%的固体来供应。
由于相比于纸张涂覆中使用的典型矿物颜料,HSPP是明显昂贵的颜料(基于干重至少比高岭土贵10倍多),并且也比固体胶乳昂贵(基于干重至少贵25%),因此纸张制造一直在寻找更加经济的合适替代方案,因此,开发HSPP的合适替代方案是本领域中的进步。
发明概述
本发明涉及一种纸张涂覆或粘结配制物,包含:水性乳剂,其包含衍生自一种或多种单体的共聚物;以及超细高岭土颜料。在某些实施方案中,本发明涉及高Tg胶乳(基本上无膜形成)和超细高岭土的共混物。
本发明还涉及一种纸张,包含纤维基质和涂覆或粘结组合物,所述涂覆或粘结组合物包含:水性乳剂,其包含衍生自一种或多种单体的共聚物;以及超细高岭土颜料。
发明详述
本发明涉及在涂覆着色剂配制物中协同使用高玻璃化转变温度的(″Tg″)胶乳和超细高岭土来代替HSPP,而不会对于流动性和涂覆的片材性能产生任何不利的影响。
本发明的超细高岭土的至少55重量%的颗粒小于0.3μm(如使用Sedigraph 5100通过X-射线沉淀技术来测量),并且具有更细的粒径。在实施方案中,55重量%的颗粒小于0.3μm在另外实施方案中,70重量%的颗粒小于0.3μm,熟知降低颜料的粒径会改善光泽度。然而,降低粒径还导致由涂层或片材不透明度提供的隐匿性降低,并且这可潜在地通过使用膨胀化学品例如多元胺来克服。用于贡献光泽度的超细粒径高岭土颜料已经显示是HSPP的合适补充剂。
本发明显示用于它们光泽度质量的微细粒径高岭土颜料或固体塑性颜料可以是HSPP的合适补充剂。然而,主要使用相对Tg固体胶乳(Tg>30℃)联合超细高岭土是可以完全替代HSPP的。高Tg胶乳在经历以获得修整的纸张和纸板涂覆的加工条件(例如涂料的施加、计量、干燥和压光)下是基本上无膜形成。高Tg胶乳衍生自一种或多种单体以提供>30℃的Tg胶乳(也称为水性共聚物乳剂)是使用自由基水性乳剂聚合通过聚合单体来合成制备的。
适用于纸张涂覆或粘结配制物的单体通常可以是烯属不饱和单体,包括例如苯乙烯、丁二烯、乙酸乙烯酯、羧酸、(甲基)丙烯酸酯、(甲基)丙烯酰胺和(甲基)丙烯腈。例如,合适的单体可以包括:乙烯基芳族化合物(例如苯乙烯,α-甲基苯乙烯,o-氯苯乙烯和乙烯基甲苯);丁二烯(即1,2-丁二烯);共轭二烯(例如1,3-丁二烯和异戊二烯);α,β-单烯属不饱和一元-和二元羧酸或其酸酐(例如,丙烯酸,甲基丙烯酸,巴豆酸,二甲基丙烯酸,丙烯酸乙酯,烯丙基乙酸,乙烯基乙酸马来酸,富马酸,衣康酸,中康酸,亚甲基丙二酸,柠康酸,马来酸酐,衣康酸酐,和甲基丙二酸酐);具有3至6个碳原子的α,β-单烯属不饱和一元-和二元羧酸和具有1至12个碳原子的烷醇的酯(例如,丙烯酸,甲基丙烯酸,马来酸,富马酸或衣康酸和C1-C12,C1-C8或C1-C4烷醇的酯,例如丙烯酸和甲基丙烯酸的乙酯、正丁酯、异丁酯、和2-乙基己酯、马来酸二甲酯与马来酸正丁酯);丙烯酰胺和烷基-取代的丙烯酰胺(例如,(甲基)丙烯酰胺,N-叔丁基丙烯酰胺和N-甲基(甲基)丙烯酰胺);(甲基)丙烯腈;乙烯基和亚乙烯基卤化物(例如,氯乙烯和偏二氯乙烯);C1-C18一元-和二元羧酸乙烯基酯(例如,乙酸乙烯酯,丙酸乙烯酯,正丁酸乙烯酯,月桂酸乙烯酯和硬脂酸乙烯酯);C3-C6一元-和二元羧酸(特别是丙烯酸,甲基丙烯酸或马来酸或它们的衍生物)使用2至50摩尔的环氧乙烷,环氧丙烷,环氧丁烷或其混合物烷氧基化的C1-C4羟基烷基酯,或者这些酸和使用2至50摩尔的环氧乙烷,环氧丙烷,环氧丁烷或其混合物烷氧基化的C1-C18醇的酯(例如,羟基乙基(甲基)丙烯酸酯,羟基丙基(甲基)丙烯酸酯和甲基聚乙二醇丙烯酸酯);以及含有缩水甘油基的单体(例如,甲基丙烯酸缩水甘油酯)。
适用于纸张涂覆或粘结配制物的另外单体可以包括线性1-烯烃、支链1-烯烃或环状烯烃(例如,乙烯,丙烯,丁烯,异丁烯,戊烯,环戊烯,己烯,和环己烯);烷基中具有1至40个碳原子的乙烯基和烯丙基烷基醚,其中所述烷基可以可能携带另外的取代基,例如羟基,氨基或二烷基氨基,或一种或多种烷氧基化的基团(例如,甲基乙烯基醚,乙基乙烯基醚,丙基乙烯基醚,异丁基乙烯基醚,2-乙基己基乙烯基醚,乙烯基环己基醚,乙烯基4-羟基丁基醚,癸基乙烯基醚,十二烷基乙烯基醚,十八烷基乙烯基醚,2-(二乙基氨基)乙基乙烯基醚,2-(二-正丁基氨基)乙基乙烯基醚,甲基二甘醇乙烯基醚和对应的烯丙基醚);硫代-官能性单体(例如,烯丙基磺酸,甲基烯丙基磺酸,苯乙烯磺酸酯,乙烯基磺酸,烯丙基氧基苯磺酸,2-酰基酰氨基-2-甲基丙烷磺酸,和它们对应的碱金属或铵盐,硫代丙基丙烯酸酯和硫代丙基甲基丙烯酸酯);乙烯基膦酸,二甲基乙烯基膦酸酯和其他磷系单体;烷基氨基烷基(甲基)丙烯酸酯或烷基氨基烷基(甲基)丙烯酰胺或其季铵化产物(例如,2-(N,N-二甲基氨基)乙基(甲基)丙烯酸酯3-(N,N-二甲基氨基)丙基(甲基)丙烯酸酯,2-(N,N,N-三甲基铵)(甲基)丙烯酸乙酯氯化物,2-二甲基氨基乙基(甲基)丙烯酰胺,3-二甲基氨基丙基(甲基)丙烯酰胺,和3-三甲基铵丙基(甲基)丙烯酰胺氯化物);C1-C30一元羧酸的烯丙基酯;N-乙烯基化合物(例如,N-乙烯基甲酰胺,N-乙烯基-N-甲基甲酰胺,N-乙烯基吡咯烷酮,N-乙烯基咪唑,1-乙烯基-2-甲基咪唑,1-乙烯基-2-甲基咪唑啉,N-乙烯基己内酰胺,乙烯基咔唑,2-乙烯基吡啶和4-乙烯基吡啶);含有1,3-二酮基的单体(例如,乙酰乙酰氧基乙基(甲基)丙烯酸酯或二丙酮丙烯酰胺;含有脲基的单体(例如,脲基乙基(甲基)丙烯酸酯,丙烯酰基酰氨基羟基乙酸,和甲基丙烯酰基酰氨基羟基乙酸酯甲基醚);以及含有甲硅烷基的单体(例如,三甲氧基甲硅烷基丙基甲基丙烯酸酯)。
合适的单体还可以包括一种或多种交联剂,例如具有3至10个碳原子的α,β-单烯属不饱和羧酸以及它们和具有1至4个碳原子的醇的酯的N-羟基烷基酰胺(例如,N-羟甲基丙烯酰胺和N-羟甲基甲基丙烯酰胺);乙二醛类交联剂;含有两个乙烯基的单体;含有两个亚乙烯基的单体;以及含有两个烯基的单体。示例***联单体可以包括二元醇和α,β-单烯属不饱和一元羧酸的二酯,进而可以使用丙烯酸和甲基丙烯酸。含有两个非-共轭烯属不饱和双键的这些单体的例子可以包括亚烷基二醇二丙烯酸酯和二甲基丙烯酸酯,例如乙二醇二丙烯酸酯,1,3-丁二醇二丙烯酸酯,1,4-丁二醇二丙烯酸酯和丙二醇二丙烯酸酯,二乙烯基苯,乙烯基甲基丙烯酸酯,乙烯基丙烯酸酯,烯丙基甲基丙烯酸酯,烯丙基丙烯酸酯,二烯丙基马来酸酯,二烯丙基富马酸酯和亚甲基双丙烯酰胺。在一些实施方案中,交联单体可以包括亚烷基二醇二丙烯酸酯和二甲基丙烯酸酯,和/或二乙烯基苯。当在共聚物中使用时交联单体可以存在的量为0.2至5phm,并且被认为是共聚物中使用的单体的总量的一部分。
除了交联单体,可以使用少量(例如,0,01至4phm)的分子量调节剂,例如叔十二烷基硫醇。这些调节剂可以和待聚合的单体一起加入混合物中的聚合区域中,并且被认为是共聚物中使用的单体的总量的一部分。
在一些实施方案中,单体可以包括苯乙烯,α-甲基苯乙烯,(甲基)丙烯酸,衣康酸,马来酸,富马酸,巴豆酸,(甲基)丙烯酸甲酯,(甲基)丙烯酸乙酯,(甲基)丙烯酸正丁酯,(甲基)丙烯酸异丁酯,(甲基)丙烯酸叔丁酯,(甲基)丙烯酸2-乙基己酯,乙酸乙烯酯,丁二烯,(甲基)丙烯酰胺,(甲基)丙烯腈,羟基(甲基)丙烯酸乙酯和(甲基)丙烯酸缩水甘油酯.
共聚物可以是纯丙烯酸类共聚物、苯乙烯丙烯酸类共聚物、苯乙烯丁二烯共聚物或乙烯基丙烯酸类共聚物。
在一些实施方案中,共聚物可以是衍生自一种或多种单体的纯丙烯酸类共聚物,所述一种或多种单体选自:(甲基)丙烯酸,(甲基)丙烯酸酯,(甲基)丙烯酰胺和(甲基)丙烯腈。在一些实施方案中,共聚物可以包括71至99.5phm的至少一种(甲基)丙烯酸酯、0至6phm的衣康酸和/或甲基(丙烯)酸、0至3phm的至少一种(甲基)丙烯酰胺、0至20phm的至少一种(甲基)丙烯腈和0至5phm的乙烯基三乙氧基硅烷。
在一些实施方案中,共聚物可以是甲基丙烯酸甲酯(″MMA″)和n-丙烯酸丁酯(″BA″)的共聚物。在一些实施方案中,共聚物可以包括25至85phm的MMA、20至65phm的BA、0至6phm的衣康酸和/或(甲基)丙烯酸、0至3phm的至少一种(甲基)丙烯酰胺、0至20phm的至少一种(甲基)丙烯腈、以及0至5phm的乙烯基三乙氧基硅烷。
在一些实施方案中,共聚物可以是MMA和丙烯酸2-乙基己酯(″2-EHA″)的共聚物。在一些实施方案中,共聚物可以包括25至85phm的MMA、20至65phm的2-EHA、0至6phm的衣康酸和/或(甲基)丙烯酸、0至3phm的至少一种(甲基)丙烯酰胺、0至20phm的至少一种(甲基)丙烯腈和0至5phm的乙烯基三乙氧基硅烷。
在一些实施方案中,共聚物可以是2-EHA和BA的共聚物。在一些实施方案中,共聚物可以包括20至65phm的2-EHA、20至65phm的BA、0至6phm的衣康酸和/或(甲基)丙烯酸、0至3phm的至少一种(甲基)丙烯酰胺、0至20phm的至少一种(甲基)丙烯腈和0至5phm的乙烯基三乙氧基硅烷。
在一些实施方案中,共聚物可以是衍生自单体的苯乙烯丙烯酸类共聚物,包括苯乙烯,(甲基)丙烯酸,(甲基)丙烯酸酯,(甲基)丙烯酰胺,(甲基)丙烯腈及其混合物。例如,苯乙烯丙烯酸类共聚物可以包括苯乙烯和下列中的至少一种:(甲基)丙烯酸,衣康酸,(甲基)丙烯酸甲酯,(甲基)丙烯酸乙酯,(甲基)丙烯酸正丁酯,(甲基)丙烯酸异丁酯,(甲基)丙烯酸叔丁酯,(甲基)丙烯酸2-乙基己酯,(甲基)丙烯酰胺,(甲基)丙烯腈和羟基(甲基)丙烯酸乙酯。苯乙烯丙烯酸类共聚物可以包括24至87phm的(甲基)丙烯酸酯、18至81phm的苯乙烯、0至2phm的(甲基)丙烯酰胺和0至20phm的(甲基)丙烯腈。苯乙烯丙烯酸类共聚物还可以包括0至3phm的上述一种或多种交联单体,例如亚烷基二醇二丙烯酸酯和二甲基丙烯酸酯。
在一些实施方案中,共聚物可以是衍生自单体的苯乙烯丁二烯共聚物,包括苯乙烯,丁二烯,(甲基)丙烯酰胺,(甲基)丙烯腈,衣康酸和(甲基)丙烯酸。苯乙烯丁二烯共聚物可以包括25至95phm的苯乙烯、15至90phm的丁二烯、0至6phm的衣康酸和/或(甲基)丙烯酸、0至2phm的(甲基)丙烯酰胺1和0至20phm的(甲基)丙烯腈。苯乙烯丁二烯共聚物还可以包括0至3phm的上述一种或多种交联单体,例如二乙烯基苯。
在一些实施方案中,共聚物可以是衍生自单体的乙烯基丙烯酸类共聚物,包括乙酸乙烯酯,(甲基)丙烯酸,(甲基)丙烯酸酯,(甲基)丙烯酰胺,(甲基)丙烯腈及其混合物。例如,乙烯基丙烯酸类共聚物可以包括乙酸乙烯酯和下列中的至少一种:(甲基)丙烯酸,衣康酸,(甲基)丙烯酸甲酯,(甲基)丙烯酸乙酯,(甲基)丙烯酸正丁酯,(甲基)丙烯酸异丁酯,(甲基)丙烯酸叔丁酯,(甲基)丙烯酸2-乙基己酯,(甲基)丙烯酰胺,(甲基)丙烯腈和羟基(甲基)丙烯酸乙酯。乙烯基丙烯酸类共聚物可以包括24至87phm的(甲基)丙烯酸酯、18至81phm的乙酸乙烯酯、0至2phm的(甲基)丙烯酰胺和0至20phm的(甲基)丙烯腈。乙烯基丙烯酸类共聚物还可以包括0至3phm的上述一种或多种交联单体,例如亚烷基二醇二丙烯酸酯和二甲基丙烯酸酯。
单体和单体用于形成共聚物的量被选择以使共聚物的Tg>30℃,从而促进光泽度进展,并且在纸张涂覆中用作粘结剂的共聚物的典型Tg范围-10℃至25℃之外。共聚物中使用的单体的选择还可以受到经济关注的驱动,例如以降低纸张涂覆或粘结配制物的生产成本。单体的选择还可以受到单体特性和终端应用(例如耐受水和/或光)的驱动。
表示为Styronal ND811(BASF Corporation)的产品是用作纸张和纸板涂覆的光泽度添加剂的羧化苯乙烯/丁二烯共聚物分散体。其固体含量为约50%(允许相对于中空球形塑性颜料改善的涂覆着色剂固体,并且因此降低涂覆干燥成本)并且Tg为56℃。独立地,不可能匹配HSPP所赋予的光泽度(参见美国专利No.6,410,158;实施例2)。
吃惊地,如下面实施例所示,纳米级高岭土颜料和高Tg胶乳的组合代替中空球形塑性颜料是可能的,并且提供给造纸厂实质性经济优点,而不会对它们的现有结构产生影响。在超细高岭土和高Tg胶乳的配制物或共混物中,可以使用超细高岭土取代标准高岭土并且高Tg胶乳取代塑性颜料。实施例1.Styronal ND 811本身不会提供使用中空球形塑性颜料实现的光泽度
表1示出具有中空球形塑性颜料的配制物经历一种变化-使用高Tg胶乳Styronal ND811(样品7)代替颜料(样品4)。
表1-涂覆配制物
样品# | 4 | 7 |
高亮度#1高岭土 | 40 | 40 |
GCC | 60 | 60 |
分散剂 | 0.19 | 0.19 |
SB胶乳 | 9.0 | 9.0 |
淀粉 | 7.0 | 7.0 |
硬脂酸钙 | 1.0 | 1.0 |
中空球PP | 5.0 | |
Styronal ND 811 | 5.0 |
所述配制物被制成59固体%和pH 8.0。使用Modern Metalcraft涂覆器将其施加至LWC木质基纸。使用本领域技术人员已知的标准方法,将涂覆的纸张干燥,切成片材,并且压光(2个压区,250F动荡温度和500pli压力)至目标光泽度65%。
表2-配制物粘度和涂覆的纸张性能
明显地,ND811并未实现光泽度目标。
实施例2.表3示出超细高岭土产品M07-1061在用于代替#1高亮度高岭土颜料时会导致塑性颜料的显著降低(5份中的2份),同时在相同压光条件下实现光泽度目标。该配制物和涂覆着色剂粘度、固体和目标涂覆重量与光泽度示于表3中。
表3-涂覆配制物CO2007-0238
使用Modern Metalcraft涂覆器将涂覆着色剂施加至基纸。使用标准方法将涂覆的纸张干燥,切成片材,并且压光至目标光泽度65%。表4示出涂覆的纸张性能。
表4-纸张性能
样品# | 1 | 5 |
样品略语 | #1高岭土 | M07-1061 |
样品描述 | HSPP-5份 | HSPP-2份 |
片材光泽度75°(%) | 66 | 66 |
亮度(%) | 77.2 | 77.0 |
IGT拉毛(ft/min) | 142 | 130 |
#1高亮度高岭土颜料替代表示为M07-1061的产品,并且塑性颜料含量从5份降低至2份,导致相同的光泽度而没有片材亮度的损失。
实施例3.
实施例3示出表示为ND811(胶乳)和M07-1061(高岭土)的BASF产品的组合将完全代替塑性颜料,这会改善片材光泽度而没有涂层强度的损失。
表5-涂覆配制物
表6纸张试验结果
表6显示使用M07-1061的组合光泽度具有显著改善,而不会涂层强度造成不利影响。此外,如在前面实施例中观察的,涂覆着色剂的流变性改善,并且在取代塑性颜料的条件下所有涂料的保水性仍旧保持优异。
实施例4.
实施例4再次示出表示为ND811和M07-1061的BASF产品的组合将去除塑性颜料,并且性能相对于仅仅ND811或仅仅M07-1061得到改善。
配制物和涂覆着色剂特性示于表8中。
表8.
使用Modern Metalcraft涂覆器将涂覆着色剂施加至基纸。使用标准方法将涂覆的纸张干燥,切成片材,并且压光至目标光泽度70%。表9示出涂覆的纸张性能。
表9-纸张性能
仅仅使用ND811代替HSPP会保持片材光泽度和片材亮度,但是不透明度显著降低0.8个点,并且印刷光泽度降低4个点。另一方面,使用超细高岭土代替#1级高岭土并且取出HSPP会导致光泽度降低4个点和印刷光泽度降低5个点。然而,同时使用ND811和超细高岭土会导致相同的光泽度、更好的片材亮度、轻微降低的片材不透明度和印刷光泽度。
在某些实施方案中,单体和高岭土颜料单独添加或者作为共混物联合添加至所述涂覆或粘结配制物中。
尽管已经参照示例性实施方案来具体示出和描述了本发明,但是本领域技术人员应该理解,在不偏离所附权利要求书限定的本发明的精神和范围的条件下,可以进行多种形式和细节的改变。
Claims (22)
1.一种纸张涂覆或粘结配制物,包含:
水性乳剂,其包含衍生自一种或多种单体的共聚物;以及
超细高岭土颜料。
2.根据权利要求1所述的纸张涂覆或粘结配制物,其中所述一种或多种单体选自:苯乙烯、丁二烯、乙酸乙烯酯、羧酸、(甲基)丙烯酸酯、(甲基)丙烯酰胺和(甲基)丙烯腈。
3.根据权利要求1所述的纸张涂覆或粘结配制物,其中所述共聚物选自纯丙烯酸-类共聚物、苯乙烯丙烯酸-类共聚物、苯乙烯丁二烯-类共聚物和乙烯基丙烯酸-类共聚物。
4.根据权利要求3所述的纸张涂覆或粘结配制物,其中所述共聚物包括纯丙烯酸-类共聚物。
5.根据权利要求1所述的纸张涂覆或粘结配制物,其中所述一种或多种单体中的至少一种选自(甲基)丙烯酸、(甲基)丙烯酸酯、(甲基)丙烯酰胺、(甲基)丙烯腈及其混合物。
6.根据权利要求5所述的纸张涂覆或粘结配制物,其中所述一种或多种单体包括甲基丙烯酸甲酯和丙烯酸丁酯。
7.根据权利要求5所述的纸张涂覆或粘结配制物,其中所述一种或多种单体包括甲基丙烯酸甲酯和丙烯酸2-乙基己酯。
8.根据权利要求5所述的纸张涂覆或粘结配制物,其中所述一种或多种单体还包括丙烯酸。
9.根据权利要求3所述的纸张涂覆或粘结配制物,其中所述共聚物的玻璃化转变温度高于30℃。
10.根据权利要求1所述的纸张涂覆或粘结配制物,其中至少55%的所述高岭土颜料小于0.3μm。
11.根据权利要求1所述的纸张涂覆或粘结配制物,其中所述单体和高岭土颜料单独添加或者作为共混物联合添加至所述涂覆或粘结配制物中。
12.一种纸张,包含纤维基质和涂覆或粘结组合物,所述涂覆或粘结组合物包含:
水性乳剂,其包含衍生自一种或多种单体的共聚物;以及
超细高岭土颜料。
13.根据权利要求12所述的纸张,其中所述一种或多种单体选自:苯乙烯、丁二烯、乙酸乙烯酯、羧酸、(甲基)丙烯酸酯、(甲基)丙烯酰胺和(甲基)丙烯腈。
14.根据权利要求12所述的纸张,其中所述共聚物选自纯丙烯酸-类共聚物、苯乙烯丙烯酸-类共聚物、苯乙烯丁二烯-类共聚物和乙烯基丙烯酸-类共聚物。
15.根据权利要求14所述的纸张,其中所述共聚物包括纯丙烯酸-类共聚物。
16.根据权利要求12所述的纸张,其中所述一种或多种单体中的至少一种选自(甲基)丙烯酸、(甲基)丙烯酸酯、(甲基)丙烯酰胺、(甲基)丙烯腈及其混合物。
17.根据权利要求16所述的纸张,其中所述一种或多种单体包括甲基丙烯酸甲酯和丙烯酸丁酯。
18.根据权利要求16所述的纸张,其中所述一种或多种单体包括甲基丙烯酸甲酯和丙烯酸2-乙基己酯。
19.根据权利要求16所述的纸张,其中所述一种或多种单体还包括丙烯酸。
20.根据权利要求14所述的纸张,其中所述共聚物的玻璃化转变温度高于30℃。
21.根据权利要求12所述的纸张,其中至少55%的所述高岭土颜料小于0.3μm。
22.根据权利要求12所述的纸张,其中所述单体和高岭土颜料单独添加或者作为共混物联合添加至所述涂覆或粘结配制物中。
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US22938109P | 2009-07-29 | 2009-07-29 | |
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PCT/US2010/043511 WO2011014545A2 (en) | 2009-07-29 | 2010-07-28 | Novel glossing system for paper and paperboard coatings |
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CN113073494A (zh) * | 2021-04-12 | 2021-07-06 | 东莞市冠力胶业有限公司 | 一种环保替塑水胶 |
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WO2017156088A1 (en) | 2016-03-08 | 2017-09-14 | Basf Corporation | Heat treated kaolin pigment with a ge brightness of at least 92 for paper and coatings |
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JP2013501157A (ja) | 2013-01-10 |
EP2459802A4 (en) | 2014-01-22 |
WO2011014545A3 (en) | 2011-06-16 |
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US20120135253A1 (en) | 2012-05-31 |
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