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1.发明授权Low formaldehyde and high wet strength vinyl acetate ethylene copolymer and vinyl acetate polymer dispersions 有权低甲醛和高湿强度乙酸乙烯酯乙烯共聚物和乙酸乙烯酯聚合物分散体公开(公告)号：US09340908B2
公开(公告)日：2016-05-17
申请号：US13313437
申请日：2011-12-07
CPC分类号： D04H1/641 , D04H1/587 , D04H1/64 , Y10T442/20 , C09D131/04 , C08K3/16 , C08L29/04 , C08K3/28
摘要： An aqueous composition includes polyvinyl alcohol, an acid having a pKa of at most 4.0, and a dispersion of a polymer in which vinyl acetate units constitute at least 60 wt % of the polymer. The polymer does not contain units of any N-methylol-containing monomer, and at least a portion of the polyvinyl alcohol is present in the form of an emulsion stabilizer for the polymer. The wet strength of a fibrous nonwoven substrate can be increased by applying one or more aqueous compositions that together include polyvinyl alcohol, an acid having a pKa of at most 4.0, and a dispersion of a polymer as described above, followed by a final drying step. A fibrous nonwoven article can be prepared in this way.
摘要翻译： 水性组合物包括聚乙烯醇，pKa至多为4.0的酸和聚合物的分散体，其中乙酸乙烯酯单元构成聚合物的至少60重量％。 聚合物不含任何含N-羟甲基单体的单元，至少一部分聚乙烯醇以聚合物乳液稳定剂的形式存在。 通过施加一种或多种水性组合物可以提高纤维非织造基材的湿强度，所述水性组合物一起包括聚乙烯醇，pKa至多为4.0的酸和如上所述的聚合物的分散体，然后进行最终干燥步骤 。 可以以这种方式制备纤维非织造制品。
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2.发明授权Vinyl acetate/ethylene and ethylene/vinyl chloride blends as binders for nonwoven products 有权乙酸乙烯酯/乙烯和乙烯/氯乙烯共混物作为非织造产品的粘合剂公开(公告)号：US07153791B2
公开(公告)日：2006-12-26
申请号：US10935138
申请日：2004-09-07
CPC分类号： D04H1/64 , D04H1/587 , Y10T442/20 , Y10T442/2762 , Y10T442/2787 , Y10T442/2811 , Y10T442/2861 , Y10T442/291 , Y10T442/60 , Y10T442/652
摘要： This invention is directed to an improvement in binders particularly suited for use in preparing nonwoven products and to the nonwoven products. The improved binders comprise a blend of emulsion polymerized ethylene-vinyl chloride (EVCl) polymer and an emulsion polymerized self crosslinkable vinyl acetate-ethylene-N-methylolacrylamide (VAE-NMA) polymer. The blends of the EVCl polymer emulsion and the VAE-NMA polymer emulsion can be applied to cellulose and cellulose/synthetic nonwoven substrates and cured in the absence of an acid catalyst to provide a self-sustaining web having excellent wet strength performance. The blends of EVCl and VAE-NMA polymers do not require an acid catalyst to facilitate cure.
摘要翻译： 本发明涉及特别适用于制备非织造产品和非织造产品的粘合剂的改进。 改进的粘合剂包括乳液聚合的乙烯 - 氯乙烯（EVCl）聚合物和乳液聚合的可自交联的乙酸乙烯酯 - 乙烯-N-羟甲基丙烯酰胺（VAE-NMA）聚合物的共混物。 EVCl聚合物乳液和VAE-NMA聚合物乳液的共混物可以应用于纤维素和纤维素/合成非织造基材，并且在没有酸催化剂的情况下固化，以提供具有优异的湿强度性能的自持性网。 EVCl和VAE-NMA聚合物的共混物不需要酸催化剂来促进固化。
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公开(公告)号：US20120028527A1
公开(公告)日：2012-02-02
申请号：US12846954
申请日：2010-07-30
CPC分类号： D21H13/00 , D04H1/587 , D04H1/64 , D21H17/06 , D21H17/24 , D21H19/60 , D21H21/18 , D21H21/20 , D21H21/24 , Y10T442/20 , Y10T442/2098 , Y10T442/2787
摘要： A low-formaldehyde binder composition for increasing wet and dry tensile strength of a nonwoven substrate includes: a) an aqueous vinyl acetate ethylene copolymer dispersion employing a nonionic, cationic or amphoteric dispersion stabilizer, b) chitosan, and c) one or more surfactants not including the dispersion stabilizer. The binder composition has a free formaldehyde content no greater than 10 ppm, at least 90 wt % of the one or more surfactants are nonionic, cationic, amphoteric or a combination of these, and the copolymer in the dispersion is free of formaldehyde-generating moieties.
摘要翻译： 用于提高非织造基材的湿和干拉伸强度的低甲醛粘合剂组合物包括：a）使用非离子，阳离子或两性分散稳定剂的乙酸乙烯酯乙酸乙烯共聚物水分散体，b）壳聚糖，和c）一种或多种表面活性剂 包括分散稳定剂。 粘合剂组合物的游离甲醛含量不大于10ppm，至少90wt％的一种或多种表面活性剂是非离子的，阳离子的，两性的或它们的组合，分散体中的共聚物不含产生甲醛的部分 。
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公开(公告)号：US20130149928A1
公开(公告)日：2013-06-13
申请号：US13313450
申请日：2011-12-07
IPC分类号： B32B5/02 , B05D3/00 , C09D133/26 , B05D7/24 , C09D129/04 , C09D131/04
CPC分类号： D06M15/263 , C08L2205/02 , C08L2205/03 , C09D131/04 , D04H1/4291 , D04H1/64 , D06M15/29 , D06M15/333 , Y10T442/20 , C08L29/04 , C08L31/04
摘要： An aqueous composition includes a blend of: a) an aqueous dispersion of a vinyl acetate ethylene or vinyl acetate polymer, stabilized by polyvinyl alcohol and optionally also by a surfactant, wherein the polymer does not include units of any N-methylol-containing monomer; and b) an aqueous dispersion of an N-methylol-containing vinyl acetate ethylene or vinyl acetate polymer, stabilized with a surfactant, polyvinyl alcohol or a combination thereof. A method of increasing the wet strength of a fibrous nonwoven substrate includes applying to the substrate the abovementioned aqueous composition, followed by a drying step. A fibrous nonwoven article is produced.
摘要翻译： 水性组合物包括：a）乙酸乙烯酯乙烯或乙酸乙烯酯聚合物的水分散体，其由聚乙烯醇稳定，并且任选地也由表面活性剂，其中所述聚合物不包括任何含有N-羟甲基的单体的单元; 和b）用表面活性剂，聚乙烯醇或其组合稳定的含有N-羟甲基的乙酸乙烯酯乙烯或乙酸乙烯酯聚合物的水分散体。 提高纤维非织造基材的湿强度的方法包括向基材施加上述水性组合物，然后进行干燥步骤。 制造纤维非织造制品。
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5.发明申请LOW FORMALDEHYDE AND HIGH WET STRENGTH VINYL ACETATE ETHYLENE COPOLYMER AND VINYL ACETATE POLYMER DISPERSIONS 有权低甲醛和高湿度醋酸乙烯酯乙烯共聚物和乙酸乙烯酯聚合物分散体公开(公告)号：US20130149927A1
公开(公告)日：2013-06-13
申请号：US13313437
申请日：2011-12-07
CPC分类号： D04H1/641 , D04H1/587 , D04H1/64 , Y10T442/20 , C09D131/04 , C08K3/16 , C08L29/04 , C08K3/28
摘要： An aqueous composition includes polyvinyl alcohol, an acid having a pKa of at most 4.0, and a dispersion of a polymer in which vinyl acetate units constitute at least 60 wt % of the polymer. The polymer does not contain units of any N-methylol-containing monomer, and at least a portion of the polyvinyl alcohol is present in the form of an emulsion stabilizer for the polymer. The wet strength of a fibrous nonwoven substrate can be increased by applying one or more aqueous compositions that together include polyvinyl alcohol, an acid having a pKa of at most 4.0, and a dispersion of a polymer as described above, followed by a final drying step. A fibrous nonwoven article can be prepared in this way.
摘要翻译： 水性组合物包括聚乙烯醇，pKa至多为4.0的酸和聚合物的分散体，其中乙酸乙烯酯单元构成聚合物的至少60重量％。 聚合物不含任何含N-羟甲基单体的单元，至少一部分聚乙烯醇以聚合物乳液稳定剂的形式存在。 通过施加一种或多种水性组合物可以提高纤维非织造基材的湿强度，所述水性组合物一起包括聚乙烯醇，pKa至多为4.0的酸和如上所述的聚合物的分散体，然后进行最终干燥步骤 。 可以以这种方式制备纤维非织造制品。
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6.发明授权Vinyl acetate/ethylene and vinyl chloride polymer blends as binders for nonwoven products 有权乙酸乙烯酯/乙烯和氯乙烯聚合物共混物作为非织造产品的粘合剂公开(公告)号：US07247586B2
公开(公告)日：2007-07-24
申请号：US11173365
申请日：2005-07-01
CPC分类号： D04H1/64 , D04H1/587 , Y10T428/31576 , Y10T442/20 , Y10T442/2762 , Y10T442/2787 , Y10T442/2811 , Y10T442/2861 , Y10T442/291
摘要： This invention is directed to an improvement in binders particularly suited for use in preparing nonwoven products and to the nonwoven products. The improved binders comprise a blend of a vinyl chloride (VCl) polymer emulsion and a self crosslinkable vinyl acetate-ethylene-N-methylolacrylamide (VAE-NMA) polymer emulsion. The blend of the VCl polymer emulsion and the VAE-NMA polymer emulsion can be applied to cellulose and cellulose/synthetic nonwoven substrates and cured in the absence of an acid catalyst to provide a self-sustaining web having excellent wet strength performance.
摘要翻译： 本发明涉及特别适用于制备非织造产品和非织造产品的粘合剂的改进。 改进的粘合剂包括氯乙烯（VCl）聚合物乳液和自交联乙酸乙烯酯 - 乙烯-N-羟甲基丙烯酰胺（VAE-NMA）聚合物乳液的共混物。 VCI聚合物乳液和VAE-NMA聚合物乳液的共混物可以施加到纤维素和纤维素/合成非织造基材上，并在不存在酸催化剂的情况下固化，以提供具有优异湿强度性能的自持性网。
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