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    • 2. 发明授权
    • Process for preparing extruded foam bodies
    • 挤出泡沫体的制备方法
    • US5120481A
    • 1992-06-09
    • US598020
    • 1990-10-12
    • Joseph A. BrackmanRaymond M. Breindel
    • Joseph A. BrackmanRaymond M. Breindel
    • C08J9/14
    • B29C44/3407C08J9/144C08J2325/02
    • A process for preparing an extruded thermoplastic resin elongate foam body comprising an alkenyl-substituted aromatic resin characterized as having a density of between about 0.9 to about 3.5 pounds per cubic foot is described. The process comprises the steps of (A) heat plastifying the thermoplastic resin; (B) adding at least one fluid blowing agent comprising at least one of 1-chloro-1,1-difluoroethane, 1,1,1,2-tetrafluoroethane and 2-chloro-1,1,1,2-tetrafluoroethane; (C) uniformly mixing the blowing agent in the resin under a pressure sufficient to prevent blowing of the resin thereby forming a blowable resin mixture; (D) extruding the mixture into a region of reduced pressure which is less than atmospheric pressure wherein the blowable resin mixture expands into a foam body; and (E) cooling the foam body. In one embodiment, the region of less than atmospheric pressure is formed by an elongated chamber with the blowable resin mixture passing through a die at one end of such chamber and such foam body passing through a pool of water at the opposite end of the chamber. The process results in the formation of extruded expanded thermoplastic resins such as polystyrene resins characterized as having relatively small average cell sizes such as from about 0.2 to about 0.5 mm., improved and higher compressive strengths, and higher cell volumes.
    • 描述了一种制备挤出的热塑性树脂细长泡沫体的方法,其包含密度为约0.9至约3.5磅/立方英尺的密度的烯基取代的芳族树脂。 该方法包括以下步骤:(A)对热塑性树脂进行热塑化; (B)添加至少一种包含1-氯-1,1-二氟乙烷,1,1,1,2-四氟乙烷和2-氯-1,1,1,2-四氟乙烷中的至少一种的流体发泡剂; (C)在足以防止树脂吹入的压力下将发泡剂均匀地混合在树脂中,从而形成可吹塑树脂混合物; (D)将混合物挤出到小于大气压的减压区域,其中可吹塑树脂混合物膨胀成泡沫体; 和(E)冷却泡沫体。 在一个实施方案中,小于大气压的区域由细长的室形成,其中可吹塑树脂混合物通过这种室的一端处的模具,并且这种泡沫体通过在室的相对端的水池。 该方法导致挤出的发泡热塑性树脂如聚苯乙烯树脂的形成,其特征在于具有相对较小的平均泡孔尺寸,例如约0.2至约0.5mm,改善的和较高的压缩强度以及更高的泡孔体积。
    • 3. 发明申请
    • Cell size enlargers for polystyrene foams
    • 聚苯乙烯泡沫的泡孔尺寸放大器
    • US20070299152A1
    • 2007-12-27
    • US11472772
    • 2006-06-22
    • Bharat PatelYadollah DelavizRaymond M. BreindelMitchell Z. WeekleyRoland R. LohManoj K. Choudhary
    • Bharat PatelYadollah DelavizRaymond M. BreindelMitchell Z. WeekleyRoland R. LohManoj K. Choudhary
    • C08J9/00
    • C08J9/0061C08J9/0014C08J2325/06C08J2423/00C08J2471/00
    • Polymer extruded foams that contain cell size enlarging agents are provided. The inventive composition includes a foamable polymer material, at least one blowing agent, and at least one cell size enlarging agent. The blowing agent utilized in the inventive composition is preferably selected such that the composition has a zero ozone depletion and low global warming potential. Examples include any inorganic blowing agents and/or non-hydrogenated chlorofluorocarbons (non-HCFCs). The foamable polymer material is preferably polystyrene. The cell size enlarging agent may be chosen from ethylene vinyl acetate (EVA) and/or ethylene methyl acrylate (EMA). The cell size enlarging agent permits the formation of a foam with large cell sizes that are desirable to achieve a high insulation value and to optimize the physical properties of the foamed product. In addition, the cell size enlarging agent provides an increased cell size to the foamed product without detracting from the physical and thermal properties.
    • 提供了含有电池尺寸扩大剂的聚合物挤出泡沫体。 本发明的组合物包括可发泡聚合物材料,至少一种发泡剂和至少一种细胞尺寸扩大剂。 本发明组合物中使用的发泡剂优选地选择成使得组合物具有零臭氧消耗和低的全球变暖潜能。 实例包括任何无机发泡剂和/或非氢化氯氟烃(非HCFC)。 可发泡聚合物材料优选为聚苯乙烯。 电池尺寸扩大剂可以选自乙烯乙酸乙烯酯(EVA)和/或乙烯丙烯酸甲酯(EMA)。 电池尺寸扩大剂允许形成具有大电池尺寸的泡沫,这是希望达到高绝缘值并优化发泡产品的物理性能的泡沫。 此外,电池尺寸扩大剂为发泡产品提供增加的电池尺寸,而不会降低物理和热性能。
    • 6. 发明申请
    • Polystyrene foams incorporating nanographite and HFC-134
    • 掺有纳米石墨和HFC-134的聚苯乙烯泡沫
    • US20080242752A1
    • 2008-10-02
    • US11729157
    • 2007-03-28
    • Yadollah DelavizRaymond M. BreindelMitchell Z. WeekleyRoland R. LohManoj K. Choudhary
    • Yadollah DelavizRaymond M. BreindelMitchell Z. WeekleyRoland R. LohManoj K. Choudhary
    • C08J9/00C08F14/00
    • E04C2/205B82Y30/00C08J9/0066C08J9/0071C08J9/146C08L9/02C08L9/06C08L25/06
    • Polymeric foam and polymeric foam products that contain a foamable polymer material, nanographite, and 1,1,2,2-tetrafluoroethane (HFC-134) are provided. Preferably, the foamable polymer material is an alkenyl aromatic polymer material. The foam is free of other conventional blowing agents typically utilized in preparing a foamed product. The nanographite is not chemically or surface modified and is preferably compounded in a polyethylene methyl acrylate copolymer (EMA), which is used both as a medium and a carrier for the nanographite. The nanographite may be compounded in the polymer in an amount up to 60% loading. In addition, the nanographite acts as a nucleating agent, R-value enhancer, infrared attenuating agent, lubricant, UV absorber, and process aid. The inventive foam composition produces extruded foams that have R-values that are equal to or better than conventional extruded foams produced with 1-chloro-1,1-difluoroethane (HCFC-142b). The foamed products are desirably made by a conventional extrusion process.
    • 提供含有可发泡聚合物材料,纳米石墨和1,1,2,2-四氟乙烷(HFC-134)的聚合物泡沫和聚合物泡沫产品。 优选地,可发泡聚合物材料是烯基芳族聚合物材料。 泡沫不含通常用于制备发泡产品的常规发泡剂。 纳米尺度不是化学或表面改性的,并且优选在聚丙烯酸甲酯共​​聚物(EMA)中复合,聚乙烯甲基丙烯酸甲酯共​​聚物(EMA)既用作纳米尺度的介质和载体。 纳米尺度可以以高达60%的载量的量混合在聚合物中。 此外,nanographite作为成核剂,R值增强剂,红外衰减剂,润滑剂,UV吸收剂和加工助剂。 本发明的泡沫组合物产生具有等于或优于用1-氯-1,1-二氟乙烷(HCFC-142b)生产的常规挤出泡沫的R值的挤出泡沫。 发泡产品希望通过常规挤出方法制成。
    • 7. 发明授权
    • Polystyrene/polyethylene oxide copolymer cell size enlarger for foam
    • 泡沫聚苯乙烯/聚环氧乙烷共聚物泡孔尺寸扩大器
    • US08349909B2
    • 2013-01-08
    • US12696553
    • 2010-01-29
    • Yadollah DelavizRaymond M. BreindelKlin RodriguesBharat Patel
    • Yadollah DelavizRaymond M. BreindelKlin RodriguesBharat Patel
    • B22C1/22
    • C08J9/04C08J9/0061C08J9/0066C08J9/12C08J9/141C08J9/142C08J9/146C08J2203/02C08J2203/22C08J2205/052C08J2205/10C08J2325/06C08J2425/06
    • Polymeric foam and polymeric foam products that contain a foamable polymer material, at least one blowing agent, an infrared attenuating agent, and a polystyrene/polyethylene oxide copolymer are provided. In exemplary embodiments, the blowing agent contains an HFC. The maleic anhydride-styrene copolymer grafted with polyethylene oxide increases the cell size of the polymer foam and offsets or even negates the decreased cell size caused by an HFC blowing agent and/or infrared attenuating agents. In addition, the copolymer of maleic anhydride-styrene grafted with polyethylene oxide has a positive affect on the processability of the blowing agent(s) in the composition by both widening the process window and enhancing the solubility of the blowing agent in the polymer melt. Thus, the polystyrene/polyethylene oxide copolymer present in the inventive composition acts as a cell enlarger, a plasticizer, and a processing aid. A method of forming an extruded foam product is also provided.
    • 提供含有可发泡聚合物材料,至少一种发泡剂,红外衰减剂和聚苯乙烯/聚环氧乙烷共聚物的聚合物泡沫和聚合物泡沫产品。 在示例性实施方案中,发泡剂含有HFC。 用聚环氧乙烷接枝的马来酸酐 - 苯乙烯共聚物增加了聚合物泡沫的泡孔尺寸,抵消甚至抵消了由HFC发泡剂和/或红外衰减剂引起的降低的泡孔尺寸。 此外,接枝聚环氧乙烷的马来酸酐 - 苯乙烯的共聚物通过加工工艺窗口扩大和提高发泡剂在聚合物熔体中的溶解度,对组合物中的发泡剂的加工性具有积极的影响。 因此,存在于本发明组合物中的聚苯乙烯/聚环氧乙烷共聚物用作电池放大器,增塑剂和加工助剂。 还提供了一种形成挤出泡沫产品的方法。
    • 9. 发明授权
    • Polystyrene/polyethylene oxide copolymer for enhancing water vapor permeability in thermoplastic foam
    • 聚苯乙烯/聚环氧乙烷共聚物,用于提高热塑性泡沫塑料中的水蒸气渗透性
    • US08754143B2
    • 2014-06-17
    • US13769647
    • 2013-02-18
    • Yadollah DelavizRaymond M. BreindelMitchell Z. WeekleyJohn F. Budinscak, Jr.
    • Yadollah DelavizRaymond M. BreindelMitchell Z. WeekleyJohn F. Budinscak, Jr.
    • B22C1/22C08J9/00
    • C08J9/146C08J9/0061C08J9/0066C08J9/12C08J9/141C08J9/142C08J2205/052C08J2205/10C08J2325/06C08J2425/00
    • Polymeric foam and polymeric foam products that contain a foamable polymer material, at least one blowing agent, a polystyrene/polyethylene oxide copolymer, and optionally, an infrared attenuating agent, are provided. In exemplary embodiments, the blowing agent includes at least one hydrofluorocarbon blowing agent. The maleic anhydride-styrene copolymer grafted with polyethylene oxide provides a water vapor permeability of 1.1 perm inch or greater in the extruded foam product without detrimentally affecting physical or thermal properties of the product. Additionally, the copolymer of maleic anhydride-styrene grafted with polyethylene oxide has a positive affect on the processability of the blowing agent(s) in the composition by both widening the process window and enhancing the solubility of the blowing agent in the polymer melt. Thus, the polystyrene/polyethylene oxide copolymer present in the inventive composition acts as a cell enlarger, a plasticizer, and a processing aid. A method of forming an extruded foam product is also provided.
    • 提供含有可发泡聚合物材料,至少一种发泡剂,聚苯乙烯/聚环氧乙烷共聚物和任选的红外衰减剂的聚合物泡沫和聚合泡沫产品。 在示例性实施方案中,发泡剂包括至少一种氢氟烃发泡剂。 用聚环氧乙烷接枝的马来酸酐 - 苯乙烯共聚物在挤出的泡沫产品中提供1.1 perm英寸或更大的水蒸汽透过率,而不会有害地影响产品的物理或热性能。 此外,接枝聚环氧乙烷的马来酸酐 - 苯乙烯的共聚物通过加工工艺窗口和提高发泡剂在聚合物熔体中的溶解度而对组合物中的发泡剂的加工性具有积极的影响。 因此,存在于本发明组合物中的聚苯乙烯/聚环氧乙烷共聚物用作电池放大器,增塑剂和加工助剂。 还提供了一种形成挤出泡沫产品的方法。