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51. 发明授权

US4331779A Ethylenic polymer foams having improved dimensional stability 失效
标题翻译：具有改进尺寸稳定性的乙烯聚合物泡沫
公开(公告)号：US4331779A
公开(公告)日：1982-05-25
申请号：US165991
申请日：1980-07-07
申请人： Chung P. Park
发明人： Chung P. Park
IPC分类号： C08J9/00 , C08J9/14 , C08L23/06
CPC分类号： C08J9/0061 , C08J9/141 , C08J9/143 , C08J2323/08 , C08J2423/00 , Y10S264/05 , Y10S521/91
摘要： The dimensional stability of relatively unstable substantially closed-cell low density foams of non-ionic ethylenic polymers (e.g., polyethylene, ethylene/vinyl acetate copolymers, etc.) can be notably improved by the incorporation therein (during the preparation thereof) of from about 5 to about 95 weight percent (based on total polymer weight) of a copolymer of ethylene with from about 3 to about 45 weight percent of a monoethylenically unsaturated carboxylic acid.
摘要翻译：非离子型乙烯类聚合物（例如聚乙烯，乙烯/乙酸乙烯酯共聚物等）的相对不稳定的基本上闭孔的低密度泡沫的尺寸稳定性可以通过其中（其制备过程中）从约 5至约95重量％（基于总聚合物重量）乙烯共聚物与约3至约45重量％的单烯键式不饱和羧酸。

52. 发明授权

US07226955B2 Macrocellular acoustic foam containing particulate additive 有权
标题翻译：含有微粒添加剂的蜂窝声发泡体
公开(公告)号：US07226955B2
公开(公告)日：2007-06-05
申请号：US10499802
申请日：2003-01-15
申请人： Suresh Subramonian , Chung P. Park
发明人： Suresh Subramonian , Chung P. Park
IPC分类号： C08J9/00
CPC分类号： C08J9/0066 , C08J9/0061 , C08J2323/00 , C08J2351/06
摘要： A cellular thermoplastic polyolefin foam comprising at least one particulate additive in admixture with a polymer matrix is disclosed, along with a process and foamable gel for manufacturing the same, wherein the polyolefin matrix comprises at least one polymer resin graft-modified with at least one polar group selected from the group consisting of acid, acid ester, and acid anhydride, and salts thereof. The invention facilitates the manufacture of macrocellular foams useful for acoustic absorption having increased amounts of particulate additives that provide certain desired properties difficult to achieve without the particulate additives, such as improved flame retardancy.
摘要翻译：公开了一种包含与聚合物基质混合的至少一种颗粒添加剂的多孔热塑性聚烯烃泡沫，以及用于制造聚合物基质的方法和可发泡凝胶，其中聚烯烃基质包含至少一种用至少一种极性选自酸，酸酯和酸酐的基团及其盐。本发明有助于制造可用于声吸收的具有增加量的颗粒添加剂的大量泡沫体，这些颗粒添加剂提供难以在没有颗粒添加剂的情况下实现某些所需性质，例如改进的阻燃性。

53. 发明授权

US06720363B2 Preparation of a macrocellular acoustic foam 有权
标题翻译：制备大量的细胞声泡沫
公开(公告)号：US06720363B2
公开(公告)日：2004-04-13
申请号：US09782499
申请日：2001-02-13
申请人： Suresh Subramonian , Sandrine Burgun , Chung P. Park
发明人： Suresh Subramonian , Sandrine Burgun , Chung P. Park
IPC分类号： C08J900
CPC分类号： C08J9/0019 , C08J9/0061 , C08J2201/03 , C08J2323/02
摘要： A process for making a macrocellular acoustic foam is disclosed in which a foamable gel made of a blowing agent and a polymeric resin composition is subjected to an extrusion process at a die pressure greater than the prefoaming critical die pressure but less than or equal to four times that of said prefoaming critical die pressure and macrocellular foams obtainable by that process are also disclosed which are made of: A) one or more homopolymers of ethylene, one or more C3-C20 &agr;-olefin polymers, or a combination thereof; B) one or more halogenated flame retardants; C) optionally, one or more polymers other than that of Component A; and D) optionally, one or more flame retardant synergists.
摘要翻译：公开了一种制造宏蜂窝泡沫的方法，其中由发泡剂和聚合物树脂组合物制成的可发泡凝胶在大于预发泡临界压模的模压下进行挤出加工，但小于或等于四倍还公开了通过该方法可获得的所述预发泡临界模压和宏蜂窝泡沫的那些，其由以下制成：A）一种或多种乙烯均聚物，一种或多种C 3 -C 20α-烯烃聚合物或其组合; B）一种或更多的卤化阻燃剂; C）任选的一种或多种不同于组分A的聚合物; 和D）任选的一种或多种阻燃增效剂。

54. 发明授权

US06541105B1 Acoustical open-cell polylefins and process for making 有权
标题翻译：声学开孔聚烯烃及其制备方法
公开(公告)号：US06541105B1
公开(公告)日：2003-04-01
申请号：US09744895
申请日：2002-01-24
申请人： Chung P. Park
发明人： Chung P. Park
IPC分类号： C08J936
CPC分类号： C08J9/0061 , C08J2201/03 , C08J2323/16 , C08J2423/00 , Y10T428/249953
摘要： This invention provides an expanded open-cell foam polymer composition comprising at least one linear or modified linear polyolefin, at least 50% of the cells being open, and the cells having an average size of at least 1 millimeter. It is desirable that the composition have a sound absorption coefficient as determined by ASTM D 1050 at 1,000 Hz which is greater than 0.15. In preferred foams the composition has an airflow resistivity of less than about 800,000 Rayls/m.
摘要翻译：本发明提供一种扩展的开孔泡沫聚合物组合物，其包含至少一种直链或改性线性聚烯烃，至少50％的细胞是开放的，并且所述细胞具有至少1毫米的平均尺寸。希望该组合物具有通过ASTM D 1050在1,000Hz下测定的吸声系数，其大于0.15。在优选的泡沫中，组合物具有小于约800,000Ryls / m的气流阻力。

55. 发明授权

US06251319B1 Method of forming a thermoformable polypropylene foam sheet 失效
标题翻译：形成可热成形的聚丙烯泡沫板的方法
公开(公告)号：US06251319B1
公开(公告)日：2001-06-26
申请号：US09302306
申请日：1999-04-30
申请人： Martin H. Tusim , Martin C. Cornell , Kyung W. Suh , Christopher P. Christenson , Chung P. Park
发明人： Martin H. Tusim , Martin C. Cornell , Kyung W. Suh , Christopher P. Christenson , Chung P. Park
IPC分类号： B29C4420
CPC分类号： B32B5/18 , B29C43/00 , B29C44/22 , B29C44/5654 , B29C47/0014 , B29C47/0016 , B29C47/0021 , B29C47/0023 , B29C47/0038 , B29C47/004 , B29C47/0042 , B29C47/0054 , B29C47/0066 , B29C47/02 , B29K2105/04 , B29K2105/0854 , B32B5/245 , B32B5/32 , B32B27/065 , B32B27/32 , B32B2266/0257 , B32B2266/0264 , B32B2305/30 , B32B2323/10 , B32B2605/00 , B60R13/02 , B60R13/0225 , B60R13/0815 , C08J9/127 , C08J9/141 , C08J9/142 , C08J2201/03 , C08J2323/12 , Y10S264/05
摘要： A process for making a polymer foam sheet, which comprises (i) extruding through an annular extrusion die a foamable composition comprising at least one polypropylene polymer and at least one blowing agent, at a pressure, temperature, and extrusion rate sufficient to prevent foaming of the composition prior to exiting the die, under conditions sufficient to form a foam tube having a density of at least 16 kg/m3 and no greater than 200 kg/m3, an open cell content of less than 70 percent, a circumference of at least 1 meter, and a foam thickness of at least 2 mm and no greater than 25 mm, wherein the blowing agent is used in an amount of from 0.2 to 4.5 moles per kg of polymer, (ii) allowing the foam to cool to a temperature below the melt temperature of the polypropylene, and (iii) cutting the tube of foam along its radius to form a foam sheet, wherein at least 70 percent by weight of the polymer in such sheet is a polypropylene having a melt strength in the range of from 25 to 60 cN when measured at 190° C.
摘要翻译：一种制备聚合物泡沫片的方法，其包括（i）通过环形挤出模挤出包含至少一种聚丙烯聚合物和至少一种发泡剂的可发泡组合物，其压力，温度和挤出速率足以防止发泡在足以形成具有至少16kg / m 3且不大于200kg / m 3的密度的泡沫管的条件下离开模具之前的组合物，开孔的含量小于70％，至少为周长 1米，泡沫厚度为至少2mm且不大于25毫米，其中发泡剂的用量为每公斤聚合物0.2至4.5摩尔，（ii）使泡沫体冷却至温度低于聚丙烯的熔融温度，和（iii）沿着其半径切割泡沫管，以形成泡沫片，其中该片材中至少70重量％的聚合物是熔体强度范围为从25到60 cN en在190℃测量

56. 发明授权

US5567742A Dimensionally-stable polypropylene foam expanded with inorganic blowing agents 失效
标题翻译：尺寸稳定的聚丙烯泡沫用无机发泡剂膨胀
公开(公告)号：US5567742A
公开(公告)日：1996-10-22
申请号：US267096
申请日：1994-06-28
申请人： Chung P. Park
发明人： Chung P. Park
IPC分类号： C08J9/12 , C08J9/14
CPC分类号： C08J9/125 , C08J9/122 , C08J2323/10
摘要： Disclosed is a low density, dimensionally-stable, extruded propylene polymer foam comprising primarily of an expanded propylene polymer material wherein the foam has a blowing agent comprising at least 15 percent by weight of one or more inorganic blowing agents. The propylene polymer material comprises at least about 15 weight percent of propylene monomeric units. The foam has a density of from about 10 to about 150 kilograms per cubic meter. The foam having an average cell wall thickness of less than about 35 micrometers.
摘要翻译：公开了低密度，尺寸稳定的挤出丙烯聚合物泡沫，其主要包括膨胀的丙烯聚合物材料，其中泡沫具有包含至少15重量％的一种或多种无机发泡剂的发泡剂。丙烯聚合物材料包含至少约15重量％的丙烯单体单元。泡沫的密度为约10至约150千克每立方米。泡沫的平均泡孔壁厚小于约35微米。

57. 发明授权

US5475035A Process and apparatus for making a thermoplstic foam structure employing downstream injection of water 失效
标题翻译：制造采用下游注射水的热塑性泡沫结构的方法和设备
公开(公告)号：US5475035A
公开(公告)日：1995-12-12
申请号：US321366
申请日：1994-10-11
申请人： Chung P. Park , Gerald A. Garcia
发明人： Chung P. Park , Gerald A. Garcia
IPC分类号： B29C44/08 , B29C44/34 , B29C47/00 , B29C47/10 , B29C47/50 , B29C47/80 , B29K25/00 , B29K105/04 , C08J9/12 , C08K5/02 , C08L23/10 , C08L25/06 , C08J9/00
CPC分类号： B29C44/3446 , B29C44/08 , C08J9/12 , C08J9/122 , B29C47/00 , B29C47/0009 , B29K2023/00
摘要： Disclosed is a process for making a thermoplastic polymer foam structure with a blowing agent having water. The process comprises in sequence: a) melting the polymer to form a polymer melt; b) incorporating a brominated aliphatic fire retardant into the polymer melt; c) incorporating and mixing a first blowing agent into the polymer melt to form a first foamable gel; d) cooling the first foamable gel to a suitable foaming temperature; e) incorporating and mixing a second blowing agent comprising water into the cooled first foamable gel to form a second foamable gel; f) optionally further cooling the second foamable gel to a suitable foaming temperature; and g) extruding the second foamable gel through an extrusion die to form a foam structure. Incorporating of the water blowing agent downstream in the process after the foamable gel has been cooled reduces or minimizes process corrosion problems. Further disclosed is an apparatus for making the foam structure.
摘要翻译：公开了一种用具有水的发泡剂制备热塑性聚合物泡沫结构的方法。该方法依次包括：a）熔融聚合物以形成聚合物熔体; b）将溴化脂族阻燃剂掺入聚合物熔体中; c）将第一发泡剂并入并混合到聚合物熔体中以形成第一可发泡凝胶; d）将第一可发泡凝胶冷却至合适的发泡温度; e）将包含水的第二发泡剂并入并混合到冷却的第一可发泡凝胶中以形成第二可发泡凝胶; f）任选地将第二可发泡凝胶进一步冷却至合适的发泡温度; 和g）通过挤出模头将第二可发泡凝胶挤出以形成泡沫结构。将可发泡凝胶冷却后的工艺中下游的发泡剂掺入可减少或最小化工艺腐蚀问题。进一步公开了一种用于制造泡沫结构的装置。

58. 发明授权

US5411684A Process for making large cross-section olefinic polymer foam structure blown with 1, 1-difluoroethane 失效
标题翻译：用1,1-二氟乙烷吹制大截面烯烃聚合物泡沫结构的方法
公开(公告)号：US5411684A
公开(公告)日：1995-05-02
申请号：US56231
申请日：1993-04-30
申请人： Martin H. Tusim , Chung P. Park
发明人： Martin H. Tusim , Chung P. Park
IPC分类号： C08J9/14 , B29C44/00
CPC分类号： C08J9/149 , C08J2323/02
摘要： Disclosed is an extruded, unitary, closed-cell olefin polymer foam structure in plank form. The foam structure has a cross-section of 2 or more inches in one dimension and 18 or more inches in the other dimension. The olefin polymer material has a melt index of about 3.5 grams/10 minutes or less. The foam structure contains a blowing agent of about 75 mole percent or more 1,1-difluoroethane based upon the total moles of blowing agent. Further disclosed is a process for making the foam structure at a shear rate of about 400/second or more. It was found surprising that 1,1-difluoroethane which has relatively low solubility in olefin polymers, could be used to make olefin polymer foam structures of large cross-section.
摘要翻译：公开了一种板状的挤出的，单一的闭孔烯烃聚合物泡沫结构。泡沫结构在一个尺寸上具有2英寸或更多英寸的横截面，在另一个尺寸上具有18英寸或更多英寸的横截面。烯烃聚合物材料的熔体指数为约3.5克/ 10分钟或更短。泡沫结构含有基于发泡剂总摩尔数的约75摩尔％或更多的1,1-二氟乙烷的发泡剂。进一步公开的是使泡沫结构的剪切速率为约400 /秒以上的方法。发现在烯烃聚合物中具有较低溶解度的1,1-二氟乙烷可用于制备具有大横截面的烯烃聚合物泡沫结构。

59. 发明授权

US5348795A Process for making a dimensionally-stable open-cell polypropylene foam with organic blowing agents 失效
标题翻译：用有机发泡剂制备尺寸稳定的开孔聚丙烯泡沫的方法
公开(公告)号：US5348795A
公开(公告)日：1994-09-20
申请号：US178582
申请日：1994-01-07
申请人： Chung P. Park
发明人： Chung P. Park
IPC分类号： C08J9/14 , B32B5/20
CPC分类号： C08J9/14 , C08J2323/10 , Y10T428/249993
摘要： Disclosed is a process for making a low density, dimensionally-stable, open-cell, extruded propylene polymer foam comprising primarily an expanded propylene polymer material wherein the foam has a blowing agent comprising greater than 85 percent by weight of one or more organic blowing agents based upon the total weight of the blowing agent. The propylene polymer material comprises more than 50 weight percent or more of propylene monomeric units based upon the total weight of the propylene polymer material. The foam has a density about 96 kilograms or less per cubic meter. The foam is greater than 20 percent open cell.
摘要翻译：公开了一种制备低密度，尺寸稳定的开孔，挤出丙烯聚合物泡沫的方法，主要包括膨胀丙烯聚合物材料，其中泡沫具有发泡剂，其包含大于85重量％的一种或多种有机发泡剂基于发泡剂的总重量。基于丙烯聚合物材料的总重量，丙烯聚合物材料包含大于50重量％或更多的丙烯单体单元。泡沫的密度约为每立方米96公斤或更少。泡沫大于20％的开孔。

60. 发明授权

US5288762A Cross-linked ethylenic polymer foam structures and process for making 失效
标题翻译：交联乙烯聚合物泡沫结构及其制备方法
公开(公告)号：US5288762A
公开(公告)日：1994-02-22
申请号：US54329
申请日：1993-04-28
申请人： Chung P. Park , Pak-Wing S. Chum , George W. Knight
发明人： Chung P. Park , Pak-Wing S. Chum , George W. Knight
IPC分类号： C08J9/10 , C08J9/14
CPC分类号： C08J9/14 , C08J9/10 , C08J2323/16 , Y10S526/943
摘要： Disclosed is a cross-linked ethylenic polymer foam structure of an ethylenic polymer material of a cross-linked, substantially linear ethylenic polymer. The substantially linear ethylenic polymer having in an uncross-linked state has: a) a melt flow ratio, I.sub.10 /I.sub.2, .gtoreq.5.63; b) a molecular weight distribution, M.sub.w /M.sub.n, defined by the equation: M.sub.w /M.sub.n .gtoreq.(I.sub.10 /I.sub.2)- 4.63; and c) a critical shear rate at onset of surface melt fracture of at least 50 percent greater than the critical shear rate at the onset of surface melt fracture of a linear ethylenic polymer having about the same I.sub.2 and M.sub.w /M.sub.n. Further disclosed is a process for making the above foam structure.
摘要翻译：公开了交联的，基本上线性的烯属聚合物的乙烯类聚合物材料的交联乙烯类聚合物泡沫结构。具有未交联状态的基本上线性的乙烯类聚合物具有：a）熔体流动比，I10 / I2> = 5.63; b）由以下等式定义的分子量分布Mw / Mn：Mw / Mn> =（I10 / I2）-4.63; 和c）在具有大约相同的I2和Mw / Mn的线性烯属聚合物的表面熔融断裂开始时，表面熔融断裂开始时的临界剪切速率比临界剪切速率大至少50％。进一步公开了制造上述泡沫结构的方法。

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