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1. 发明授权

US06245266B1 Method for making oriented polyethylene foam and foam produced thereby 有权
标题翻译：制造取向聚乙烯泡沫的方法和由此生产的泡沫
公开(公告)号：US06245266B1
公开(公告)日：2001-06-12
申请号：US09268396
申请日：1999-03-15
申请人： Natarajan S. Ramesh , Lloyd George
发明人： Natarajan S. Ramesh , Lloyd George
IPC分类号： C08J900
CPC分类号： B29C55/00 , B29C44/352 , B29C44/5627 , C08J9/36 , C08J2201/03 , C08J2323/02
摘要： A method for making an oriented foam generally includes the steps of: a. blending molten polyethylene and a blowing agent to form a foamable mixture; b. producing a foam by extruding the mixture at a predetermined rate through a die and into a region of reduced pressure so that the blowing agent expands within the mixture; and c. orienting the foam by drawing the foam out of the die at a rate that is between 1 and 1.5 times greater than the predetermined rate at which the mixture is extruded.
摘要翻译：制备定向泡沫的方法通常包括以下步骤：a。混合熔融聚乙烯和发泡剂以形成可发泡混合物; b。通过将模具以预定的速率挤出混合物并进入减压区域以使发泡剂在混合物内膨胀来生产泡沫; andc。通过将模具中的泡沫以比混合物挤出的预定速率大1至1.5倍的速率将泡沫从模具中取出来定向泡沫。

2. 发明授权

US06391438B1 Polyolefin foam/film composite structure and method for making same 有权
标题翻译：聚烯烃泡沫/薄膜复合结构及其制备方法
公开(公告)号：US06391438B1
公开(公告)日：2002-05-21
申请号：US09378096
申请日：1999-08-20
申请人： Natarajan S. Ramesh , Lloyd George
发明人： Natarajan S. Ramesh , Lloyd George
IPC分类号： B32B2732
CPC分类号： B32B25/045 , B32B5/18 , B32B27/32 , B32B2266/025 , B32B2307/744 , B32B2319/00 , B32B2553/00 , C08L23/04 , C08L53/00 , C08L53/02 , C08L53/025 , Y10T428/1376 , Y10T428/24504 , Y10T428/24992 , Y10T428/249953 , Y10T428/249981 , Y10T428/249991 , Y10T428/249992 , Y10T428/249993 , C08L2666/24 , C08L2666/04
摘要： A composite structure generally includes a polyolefin foam sheet and a film in adherence with the foam sheet. The film includes a blend of polyethylene and a thermoplastic elastomer. The elastomer includes a copolymer or terpolymer having a styrenic component and a rubbery component, the rubbery component having at least one carbon-carbon double bond. The rubbery component makes up at least about 70 wt. % of the thermoplastic elastomer. The resultant composite structure has a coefficient of friction ranging from about 0.5 to about 2.0, as measured at the upper surface of the film.
摘要翻译：复合结构通常包括聚烯烃泡沫片和粘附泡沫片的膜。该膜包括聚乙烯和热塑性弹性体的共混物。弹性体包括具有苯乙烯组分和橡胶组分的共聚物或三元共聚物，该橡胶组分具有至少一个碳 - 碳双键。橡胶组分占至少约70重量％％的热塑性弹性体。所得复合结构的摩擦系数在膜的上表面上测量的约为0.5至约2.0。

3. 发明授权

US06887912B2 Compatible linear and branched ethylenic polymers and foams therefrom 有权
标题翻译：相容的线性和支化烯烃聚合物和泡沫
公开(公告)号：US06887912B2
公开(公告)日：2005-05-03
申请号：US10743645
申请日：2003-12-22
申请人： Nelson E. Malwitz , Natarajan S. Ramesh , Shau-Tarng Lee
发明人： Nelson E. Malwitz , Natarajan S. Ramesh , Shau-Tarng Lee
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。

4. 发明授权

US06583190B2 Expandable composition, blowing agent, and process for extruded thermoplastic foams 有权
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.

5. 发明申请

US20130143975A1 Method of Foaming Polyolefin Using Acrylated Epoxidized Fatty Acid and Foam Produced Therefrom 失效
标题翻译：使用丙烯酸环氧化脂肪酸和生产的泡沫发泡聚烯烃的方法
公开(公告)号：US20130143975A1
公开(公告)日：2013-06-06
申请号：US13308608
申请日：2011-12-01
申请人： Edward F. Cassidy , William J. Mahon , Natarajan S. Ramesh , Parimal M. Vadhar
发明人： Edward F. Cassidy , William J. Mahon , Natarajan S. Ramesh , Parimal M. Vadhar
IPC分类号： C08J9/00
CPC分类号： C08J9/12 , C08J9/0023 , C08J9/122 , C08J2203/06 , C08J2203/08 , C08J2323/04 , C08J2323/08
摘要： The presently disclosed subject matter relates generally to method of producing thermoplastic foam from a blend of polyolefin and acrylated epoxidized fatty acid using a phsyical blowing agent. Specifically, the presently disclosed subject matter includes embodiments wherein the acrylated epoxidized fatty acid is added to the polyolefin resin in an amount of from about 0.1% to about 10%, based on the total weight of the resin. The presently disclosed subject matter also includes the foam produced by the disclosed method.
摘要翻译：目前公开的主题一般涉及使用液晶发泡剂从聚烯烃和丙烯酸酯化的环氧化脂肪酸的共混物制备热塑性泡沫的方法。具体地，本发明的主题包括其中以基于树脂总重量计约0.1％至约10％的量将丙烯酸酯化的环氧化脂肪酸加入到聚烯烃树脂中的实施方案。本公开的主题还包括通过所公开的方法产生的泡沫。

6. 发明授权

US06809125B1 Foam comprising polyolefin blend and method for producing same 有权
标题翻译：包含聚烯烃共混物的泡沫及其制造方法
公开(公告)号：US06809125B1
公开(公告)日：2004-10-26
申请号：US09586493
申请日：2000-06-02
申请人： Shau-Tarng Lee , Natarajan S. Ramesh
发明人： Shau-Tarng Lee , Natarajan S. Ramesh
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。

7. 发明授权

US06773798B2 Polyolefin foam composite structure and method for making the same 有权
标题翻译：聚烯烃泡沫复合结构及其制造方法
公开(公告)号：US06773798B2
公开(公告)日：2004-08-10
申请号：US09826221
申请日：2001-04-04
申请人： Natarajan S. Ramesh
发明人： Natarajan S. Ramesh
IPC分类号： B32B2700
CPC分类号： B32B5/18 , B32B27/32 , Y10T428/249953 , Y10T428/249977 , Y10T428/249981 , Y10T428/249982 , Y10T428/249985 , Y10T428/249987 , Y10T428/249991 , Y10T428/249992 , Y10T428/249993
摘要： A composite structure, which generally includes: a. a foam sheet comprising polyolefin; and b. a coating disposed on at least one surface of the polyolefin foam sheet, the coating comprising at least one member selected from ethylene/propylene rubber, homogeneous ethylene/alpha-olefin copolymer, ethylene/acrylic acid copolymer, ethylene/vinyl acetate copolymer, and blends of the foregoing.
摘要翻译：复合结构，其通常包括：a。包含聚烯烃的泡沫片; 安布涂层，其设置在所述聚烯烃泡沫板的至少一个表面上，所述涂层包含至少一种选自乙烯/丙烯橡胶，均匀乙烯/α-烯烃共聚物，乙烯/丙烯酸共聚物，乙烯/乙酸乙烯酯共聚物和共混物的上述内容。

8. 发明授权

US06232355B1 Polyolefin products and process additives therefor having reduced transfer to substrates 有权
标题翻译：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
申请人： Nelson E. Malwitz , Natarajan S. Ramesh , Shau-Tarng Lee
发明人： Nelson E. Malwitz , Natarajan S. Ramesh , Shau-Tarng Lee
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。

9. 发明授权

US6156813A Polyolefin products and process additives therefor having reduced transfer to substrates 有权
公开(公告)号：US6156813A
公开(公告)日：2000-12-05
申请号：US414397
申请日：1999-10-07
申请人： Nelson E. Malwitz , Natarajan S. Ramesh , Shau-Tarng Lee
发明人： Nelson E. Malwitz , Natarajan S. Ramesh , Shau-Tarng Lee
IPC分类号： C08K5/103 , C08K5/20 , C08J9/00 , C08J9/12 , C08J9/14
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.

10. 发明授权

US09045611B2 Process for preparing a heat resistant polylactic acid foamed article 有权
标题翻译：制备耐热聚乳酸发泡制品的方法
公开(公告)号：US09045611B2
公开(公告)日：2015-06-02
申请号：US13040632
申请日：2011-03-04
申请人： A. Victoria Nawaby , Eric Kragness , Robert Babrowicz , Natarajan S. Ramesh , Nilesh Amrutiya , Eugenio Longo
发明人： A. Victoria Nawaby , Eric Kragness , Robert Babrowicz , Natarajan S. Ramesh , Nilesh Amrutiya , Eugenio Longo
IPC分类号： B29C51/08 , C08J9/36 , B29C51/00 , B29K105/04
CPC分类号： C08J9/36 , B29C51/002 , B29K2105/04 , B29K2995/004 , C08J2367/04
摘要： Some embodiments of the present invention provides a method of preparing a thermoformed article composed of polylactic acid that includes the steps of providing a foam sheet comprising polylactic acid having a D-lactic acid stereo-isomer content that is about 3 mole % or less, exposing the sheet to a temperature of at least about 190° C., and forming the heated sheet in a mold at a mold temperature that is at least about 50° C. and for a length of time to form a thermoformed article having a PLA crystalline content of at least about 10%. Surprisingly, it has been discovered that heat resistant thermoformed articles can be prepared in accordance with embodiments of the invention wherein the time required for forming the foam sheet into a molded article is less than about 10 seconds.
摘要翻译：本发明的一些实施方案提供了制备由聚乳酸组成的热成型制品的方法，其包括以下步骤：提供包含D-乳酸立体异构体含量为约3摩尔％以下的聚乳酸的发泡片，曝光将片材加热至至少约190℃的温度，并将模具中的加热片材在至少约50℃的模具温度下形成并且长时间以形成具有PLA结晶的热成型制品含量至少约10％。令人惊奇的是，已经发现，根据本发明的实施方案可以制备耐热热成型制品，其中将泡沫片形成成型制品所需的时间小于约10秒。

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