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    • 22. 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。
    • 23. 发明申请
    • Extruded Polystyrene Foam Containing Propylene Carbonate, Ethylene Carbonate or Butylene Carbonate as a Process Aids
    • 包含碳酸丙烯酯,碳酸亚乙酯或碳酸亚丁酯作为加工助剂的挤出聚苯乙烯泡沫
    • US20110144221A1
    • 2011-06-16
    • US12996032
    • 2008-06-04
    • Yadollah DelavizRaymond Marshall BreindelMitchell Z. Weekley
    • Yadollah DelavizRaymond Marshall BreindelMitchell Z. Weekley
    • C08J9/00B82Y30/00
    • C08J9/0066C08J9/0014C08J9/0061C08J9/0071C08J9/12C08J2201/03C08J2203/142C08J2205/052C08J2325/04C08J2495/00
    • Polymeric foam and polymeric foam products that contain a foamable polymer material, at least one hydrofluorocarbon (HFC) blowing agent, an infrared attenuating agent such as nanographite, and propylene carbonate, ethylene carbonate, or butylene carbonate as a process additive are provided. In one or more embodiments, the HFC blowing agent is 1,1-difluoroethane (HFC-152a), 1,1,1,2-tetrafluoroethane (HFC-134a), or a combination of 1,1-difluoroethane (HFC-152a) and 1,1,1,2-tetrafluoroethane (HFC-134a). The propylene carbonate, ethylene carbonate, or butylene carbonate acts as a cell enlarger to increase the average cell size of the foamed product, as a process aid, as a plasticizer, and lowers the die pressure. The inventive foam composition produces extruded foams that have insulation values (R-values) that are equal to or better than conventional extruded, closed cell foams produced with 1-chloro-1,1-difluoroethane (HCFC-142b). In exemplary embodiments, less than 4% of the cells are open cells. A method of forming an extruded foam product is also provided.
    • 提供含有可发泡聚合物材料,至少一种氢氟烃(HFC)发泡剂,红外衰减剂如纳米石墨和碳酸亚丙酯,碳酸亚乙酯或碳酸亚丁酯作为加工添加剂的聚合物泡沫和聚合物泡沫产品。 在一个或多个实施方案中,HFC发泡剂是1,1-二氟乙烷(HFC-152a),1,1,1,2-四氟乙烷(HFC-134a)或1,1-二氟乙烷(HFC-152a )和1,1,1,2-四氟乙烷(HFC-134a)。 碳酸亚丙酯,碳酸亚乙酯或碳酸亚丁酯充当电池放大器,以增加发泡产品的平均泡孔尺寸作为加工助剂作为增塑剂,并降低模具压力。 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)生产的常规挤出的闭孔泡沫的绝缘值(R值)的挤出泡沫。 在示例性实施例中,小于4%的细胞是开放细胞。 还提供了一种形成挤出泡沫产品的方法。
    • 25. 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。