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公开(公告)号：US06887912B2
公开(公告)日：2005-05-03
申请号：US10743645
申请日：2003-12-22
IPC分类号： C08F2/00 , C08J9/14 , C08F36/04 , C08F136/04 , C08F210/00 , C08F236/04 , C08L23/00
CPC分类号： C08J9/141 , C08J2205/052 , C08J2323/02
摘要： An expanded cellular ethylenic polymer product is provided from an irradiated, noncross-linked linear ethylenic polymer. Linear ethylenic polymers can be irradiated at ambient conditions sufficient to introduce branching in the polymer in the absence of detectable cross-linking as indicated by the absence of gels. The irradiated linear ethylenic polymer is compatible with highly branched low density polyethylene and, when mixed therewith, produces a resin having a single broad based melting temperature range as determined by direct scanning calorimetry, which indicates that the polymers in the mixture have similar crystallization behavior suitable for producing low density foams by extrusion foaming. The linear polymers can be obtained from recycled shrink wrap film. Low densities of from 0.7 to less than 4 pcf can be achieved. The foams typically have improved tear resistance as compared to previous products prepared from low density polyethylene, at comparable low densities.
摘要翻译： 从照射的非交联的直链烯属聚合物提供膨胀的细胞烯属聚合物产物。 直链烯属聚合物可在不存在可检测的交联作用的情况下在足以引入聚合物中的支化物的环境条件下照射，如不存在凝胶所示。 经辐射的线性烯属聚合物与高度支化的低密度聚乙烯相容，当与其混合时，产生具有通过直接扫描量热法确定的单一宽基熔点温度范围的树脂，这表明混合物中的聚合物具有相似的结晶行为 用于通过挤出发泡生产低密度泡沫。 线性聚合物可以从再循环的收缩包装膜获得。 可实现0.7至小于4 pcf的低密度。 与以低密度聚乙烯制备的以前的产品相比，泡沫通常具有改善的抗撕裂性。
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2.发明授权Polyolefin products and process additives therefor having reduced transfer to substrates 有权聚烯烃产品及其加工添加剂具有减少的转移到基材公开(公告)号：US06232355B1
公开(公告)日：2001-05-15
申请号：US09614499
申请日：2000-07-11
IPC分类号： C08J900
CPC分类号： C08K5/103 , C08J9/0023 , C08J9/0028 , C08J9/141 , C08J2203/14 , C08J2323/02 , C08K5/20 , Y10S516/915 , C08L23/02
摘要： A process additive for polyolefin films and foams produces products having reduced aging time and reduced greasiness and reduced grease-like transfer as compared to glycerol monostearate (GMS). Carbon dioxide based blowing agents are suitable. The process additive comprises a fatty acid N-aliphatic alcohol amide of the general formula R—CON(R′)R″. R is a fatty hydrocarbon radical having from about 8 to 30 carbons. R′ typically is hydrogen. R′ can also be an alkyl radical of from about 1 to 6 carbons or an alkyl alcohol radical of from about 1 to 6 carbons. R″ is an alkyl alcohol fragment of from about 1 to 6 carbons. The alkyl alcohol fragments can be monohydric or polyhydric. Secondary fatty monoalkanolamides in which R′ is hydrogen are particularly useful, especially stearamide monoethanolamine (MEA). The benefits of the invention can be achieved and enhanced in some examples by mixing the fatty acid N-aliphatic alcohol amide with an ester of a long chain fatty acid with a polyhydric alcohol, including GMS. Examples of fatty acid N-aliphatic alcohol amides include cocamide MEA, lauramide monoisopropylamine (MIPA), oleamide MIPA, and stearamide 2,3-propanediol.
摘要翻译： 与甘油单硬脂酸酯（GMS）相比，用于聚烯烃膜和泡沫的工艺添加剂产生具有减少的老化时间和减少的油脂并减少类似脂肪的转移的产物。 二氧化碳基发泡剂是合适的。 加工添加剂包括通式为R-CON（R'）R“的脂肪酸N-脂族醇酰胺。 R是具有约8至30个碳的脂肪烃基。 R'通常是氢。 R'也可以是约1至6个碳的烷基或约1至6个碳的烷基醇基团。 R“是约1至6个碳的烷基醇片段。 烷基醇片段可以是一元或多元。 其中R'是氢的二级脂肪单烷醇酰胺特别有用，特别是硬脂酰胺单乙醇胺（MEA）。 通过将脂肪酸N-脂肪醇酰胺与长链脂肪酸的酯与多元醇（包括GMS）混合，可以在一些实施例中实现和增强本发明的益处。 脂肪酸N-脂肪醇酰胺的实例包括椰油酰胺MEA，月桂酰胺单异丙胺（MIPA），油酰胺MIPA和硬脂酰胺2,3-丙二醇。
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公开(公告)号：US6156813A
公开(公告)日：2000-12-05
申请号：US414397
申请日：1999-10-07
CPC分类号： C08K5/103 , C08J9/0023 , C08J9/0028 , C08J9/141 , C08K5/20 , C08J2203/14 , C08J2323/02 , Y10S516/915
摘要： A process additive for polyolefin films and foams produces products having reduced aging time and reduced greasiness and reduced grease-like transfer as compared to glycerol monostearate (GMS). Carbon dioxide based blowing agents are suitable. The process additive comprises a fatty acid N-aliphatic alcohol amide of the general formula R-CON(R')R". R is a fatty hydrocarbon radical having from about 8 to 30 carbons. R' typically is hydrogen. R' can also be an alkyl radical of from about 1 to 6 carbons or an alkyl alcohol radical of from about 1 to 6 carbons. R" is an alkyl alcohol fragment of from about 1 to 6 carbons. The alkyl alcohol fragments can be monohydric or polyhydric. Secondary fatty monoalkanolamides in which R' is hydrogen are particularly useful, especially stearamide monoethanolamine (MEA). The benefits of the invention can be achieved and enhanced in some examples by mixing the fatty acid N-aliphatic alcohol amide with an ester of a long chain fatty acid with a polyhydric alcohol, including GMS. Examples of fatty acid N-aliphatic alcohol amides include cocamide MEA, lauramide monoisopropylamine (MIPA), oleamide MIPA, and stearamide 2,3-propanediol.
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公开(公告)号：US06716914B2
公开(公告)日：2004-04-06
申请号：US10454702
申请日：2003-06-04
IPC分类号： C08F21000
CPC分类号： C08J9/141 , C08J2205/052 , C08J2323/02
摘要： An expanded cellular ethylenic polymer product is provided from an irradiated, noncross-linked linear ethylenic polymer. Linear ethylenic polymers can be irradiated at ambient conditions sufficient to introduce branching in the polymer in the absence of detectable cross-linking as indicated by the absence of gels. The irradiated linear ethylenic polymer is compatible with highly branched low density polyethylene and, when mixed therewith, produces a resin having a single broad based melting temperature range as determined by direct scanning calorimetry, which indicates that the polymers in the mixture have similar crystallization behavior suitable for producing low density foams by extrusion foaming. The linear polymers can be obtained from recycled shrink wrap film. Low densities of from 0.7 to less than 4 pcf can be achieved. The foams typically have improved tear resistance as compared to previous products prepared from low density polyethylene, at comparable low densities.
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公开(公告)号：US06593386B1
公开(公告)日：2003-07-15
申请号：US09394723
申请日：1999-09-13
IPC分类号： C08F21000
CPC分类号： C08J9/141 , C08J2205/052 , C08J2323/02
摘要： An expanded cellular ethylenic polymer product is provided from an irradiated, noncross-linked linear ethylenic polymer. Linear ethylenic polymers can be irradiated at ambient conditions sufficient to introduce branching in the polymer in the absence of detectable cross-linking as indicated by the absence of gels. The irradiated linear ethylenic polymer is compatible with highly branched low density polyethylene and, when mixed therewith, produces a resin having a single broad based melting temperature range as determined by direct scanning calorimetry, which indicates that the polymers in the mixture have similar crystallization behavior suitable for producing low density foams by extrusion foaming. The linear polymers can be obtained from recycled shrink wrap film. Low densities of from 0.7 to less than 4 pcf can be achieved. The foams typically have improved tear resistance as compared to previous products prepared from low density polyethylene, at comparable low densities.
摘要翻译： 从照射的非交联的直链烯属聚合物提供膨胀的细胞烯属聚合物产物。 直链烯属聚合物可在不存在可检测的交联作用的情况下在足以引入聚合物中的支化物的环境条件下照射，如不存在凝胶所示。 经辐射的线性烯属聚合物与高度支化的低密度聚乙烯相容，当与其混合时，产生具有通过直接扫描量热法确定的单一宽基熔点温度范围的树脂，这表明混合物中的聚合物具有相似的结晶行为 用于通过挤出发泡生产低密度泡沫。 线性聚合物可以从再循环的收缩包装膜获得。 可实现0.7至小于4 pcf的低密度。 与以低密度聚乙烯制备的以前的产品相比，泡沫通常具有改善的抗撕裂性。
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公开(公告)号：US06559194B2
公开(公告)日：2003-05-06
申请号：US09841656
申请日：2001-04-24
IPC分类号： C08J900
CPC分类号： C08K5/103 , C08J9/0023 , C08J9/0028 , C08J9/141 , C08J2203/14 , C08J2323/02 , C08K5/20 , Y10S516/915 , C08L23/02
摘要： A process additive for polyolefin films and foams produces products having reduced aging time and reduced greasiness and reduced grease-like transfer as compared to glycerol monostearate (GMS). Carbon dioxide based blowing agents are suitable. The process additive comprises a fatty acid N-aliphatic alcohol amide of the general formula R—CON(R′)R″. R is a fatty hydrocarbon radical having from about 8 to 30 carbons. R′ typically is hydrogen. R′ can also be an alkyl radical of from about 1 to 6 carbons or an alkyl alcohol radical of from about 1 to 6 carbons. R″ is an alkyl alcohol fragment of from about 1 to 6 carbons. The alkyl alcohol fragments can be monohydric or polyhydric. Secondary fatty monoalkanolamides in which R′ is hydrogen are particularly useful, especially stearamide monoethanolamine (MEA). The benefits of the invention can be achieved and enhanced in some examples by mixing the fatty acid N-aliphatic alcohol amide with an ester of a long chain fatty acid with a polyhydric alcohol, including GMS. Examples of fatty acid N-aliphatic alcohol amides include cocamide MEA, lauramide monoisopropylamine (MIPA), oleamide MIPA, and stearamide 2,3-propanediol.
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公开(公告)号：US06583190B2
公开(公告)日：2003-06-24
申请号：US09748931
申请日：2000-12-27
申请人： Shau-Tarng Lee , Natarajan S. Ramesh , James Baker
发明人： Shau-Tarng Lee , Natarajan S. Ramesh , James Baker
IPC分类号： C08J914
CPC分类号： C08J9/127 , C08J2201/03 , C08J2203/06 , C08J2203/14 , C08J2323/06
摘要： An extruded thin sheet foam is disclosed prepared from a polyolefin resin in which the blowing agent comprises a blend of from about 1 to 25% by weight of carbon dioxide and the balance of C3 to C4 VOCs. Thin foam sheets produced with the blowing agent age about twice as fast as foams prepared with VOCs, are remarkably stable, and can be produced at high throughputs.
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公开(公告)号：US06809125B1
公开(公告)日：2004-10-26
申请号：US09586493
申请日：2000-06-02
IPC分类号： C08L2308
CPC分类号： C08L23/06 , C08L23/0815 , C08L2203/14 , C08L2666/06
摘要： A foam and method for making such foam includes a blend of a low density polyethylene and a higher density ethylene polymer. The ethylene polymer has a density ranging from greater than 0.94 to about 0.97 grams/cubic centimeter and a melt flow index of greater than 10 g/10 minutes, and may include at least one member selected from ethylene/alpha-olefin copolymer, ethylene homopolymer, and blends thereof.
摘要翻译： 泡沫和制造这种泡沫的方法包括低密度聚乙烯和较高密度乙烯聚合物的共混物。 乙烯聚合物的密度范围大于0.94至约0.97克/立方厘米，熔体流动指数大于10g / 10分钟，并且可包括至少一种选自乙烯/α-烯烃共聚物，乙烯均聚物 ，及其混合物。
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9.发明授权Expandable composition, blowing agent, and process for extruded thermoplastic foams 有权可膨胀组合物，发泡剂和挤出热塑性泡沫体的方法公开(公告)号：US06872757B2
公开(公告)日：2005-03-29
申请号：US10454757
申请日：2003-06-04
申请人： Shau-Tarng Lee , Natarajan S. Ramesh , James Baker
发明人： Shau-Tarng Lee , Natarajan S. Ramesh , James Baker
CPC分类号： C08J9/127 , C08J2201/03 , C08J2203/06 , C08J2203/14 , C08J2323/06
摘要： An extruded thin sheet foam is disclosed prepared from a polyolefin resin in which the blowing agent comprises a blend of from about 1 to 25% by weight of carbon dioxide and the balance of C3 to C4 VOCs. Thin foam sheets produced with the blowing agent age about twice as fast as foams prepared with VOCs, are remarkably stable, and can be produced at high throughputs.
摘要翻译： 公开了一种由聚烯烃树脂制备的挤出薄片泡沫体，其中发泡剂包含约1至25重量％的二氧化碳和余量为C 3至C 4 VOC的共混物。 用发泡剂制备的薄泡沫片剂的寿命约为用VOC制备的泡沫的两倍，是非常稳定的，并且可以以高产量生产。
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公开(公告)号：US20080114091A1
公开(公告)日：2008-05-15
申请号：US11560042
申请日：2006-11-15
CPC分类号： C08J3/28
摘要： The present invention provides a method for producing a UV induced crosslinked foam in which a melt stream comprising a thermoplastic polymer, a UV crosslinking agent and a photoinitiator is crosslinked by exposing the melt stream to a source of UV light source prior to extruding the melt through an extrusion die. Exposing the melt stream to UV light causes the photoinitiator to become excited and react with the crosslinking agent to generate a free radical. The thus generated free radical reacts with the thermoplastic polymer to induce crosslinking in the polymer. Crosslinking of the polymer can be done prior to extrusion so that the crosslinking process can be carried out without additional steps and/or without the aid of chemical crosslinking agents. The invention also provides an apparatus for producing a crosslinked foam in which the apparatus includes a UV chamber disposed between the extruder and the die through which UV light can be introduced into the melt stream.
摘要翻译： 本发明提供一种制备UV诱导交联泡沫的方法，其中包含热塑性聚合物，UV交联剂和光引发剂的熔体流在将熔体流挤出之前将熔体流暴露于UV光源之前进行交联 挤出模具。 将熔融流体暴露于UV光使得光引发剂变得激发并与交联剂反应以产生自由基。 由此产生的自由基与热塑性聚合物反应以引发聚合物中的交联。 聚合物的交联可以在挤出之前进行，使得交联过程可以在没有附加步骤和/或不借助化学交联剂的情况下进行。 本发明还提供了一种用于生产交联泡沫的装置，其中该装置包括设置在挤出机和模具之间的UV室，通过UV室可将UV光引入到熔体流中。
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