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公开(公告)号：US06593383B2
公开(公告)日：2003-07-15
申请号：US10157434
申请日：2002-05-29
IPC分类号： C08J922
CPC分类号： C08J9/18 , B29C44/3461 , C08J2203/06 , C08J2323/12 , C08L23/0876 , C08L23/10 , C08L2203/14 , Y10S264/09 , C08L2666/06
摘要： To provide a process for preparing polyolefin resin pre-expanded particles which enables to prepare pre-expanded particles having lower fluctuation in expansion ratios. Polyolefin resin pre-expanded particles are prepared by a process comprising steps of dispersing polyolefin resin particles into an aqueous dispersion medium in an autoclave; heating the resin particles to temperature of at least the softening point of the polyolefin resin and pressuring the same; releasing said resin particles from the autoclave through a release port into an atmosphere of lower pressure than the inner pressure of the autoclave; thereby pre-expanding the resin particles, wherein at the releasing step, the resulting pre-expanded particles are contacted with gas of at least 60° C. and collided with a collision board or a container wall disposed at a distance of 5 mm
摘要翻译： 提供一种制备聚烯烃树脂预发泡颗粒的方法，其能够制备具有较低膨胀比波动的预发泡颗粒。聚烯烃树脂预发泡颗粒通过以下步骤制备，所述方法包括以下步骤：将聚烯烃树脂颗粒分散到水性分散介质 在高压釜中 将树脂颗粒加热至至少为聚烯烃树脂的软化点的温度并加压; 通过释放口将高压釜中的树脂颗粒释放到低于高压釜内压的气氛中; 从而预先膨胀树脂颗粒，其中在释放步骤中，将所得预发泡颗粒与至少60℃的气体接触并与碰撞板或设置在5mm×D距离处的容器壁相撞 D表示从释放口到碰撞板或容器壁的距离。
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2.发明授权Pre-expanded particles of propylene resin, process for preparing the same and flow-restricting device 失效丙烯树脂的预发泡颗粒，其制备方法和流动限制装置
公开(公告)号：US06130266A
公开(公告)日：2000-10-10
申请号：US495329
申请日：2000-02-01
CPC分类号： C08J9/18 , C08L23/10 , C08J2203/06 , C08J2323/16 , C08L23/0876 , Y10S521/917
摘要： There is provided pre-expanded particles of a propylene resin having a high expansion ratio and excellent molding adhesion without using a volatile blowing agent or increasing an expansion pressure. The pre-expanded particles of a propylene resin are prepared by the process comprising dispersing resin particles comprising a propylene resin composition, which contains 100 parts by weight of (A) a random copolymer of ethylene and propylene having an ethylene content of 1.5 to 4.5% by weight and 0.001 to 10 parts by weight of (B) an alkali metal salt of a copolymer of ethylene and (meth)acrylic acid, into an aqueous dispersion medium in a pressure vessel to obtain a mixture, heating the mixture to an expansion temperature higher than a softening temperature of the resin particles, introducing an inorganic gas, and releasing the mixture into a lower atmosphere than the inner pressure of the pressure vessel; said mixture is expanded after a temperature of said mixture is maintained at a temperature region of not more than the expansion temperature to at least (the expansion temperature -1.degree. C.) for at least 30 minutes.
摘要翻译： 在不使用挥发性发泡剂或增加膨胀压力的情况下，提供具有高膨胀率和优异的模制粘合性的丙烯树脂的预发泡颗粒。 丙烯树脂的预发泡颗粒通过包括分散树脂颗粒的方法制备，所述树脂颗粒包含丙烯树脂组合物，其包含100重量份的（A）乙烯含量为1.5至4.5重量％的乙烯和丙烯的无规共聚物， 和（B）乙烯与（甲基）丙烯酸的共聚物的碱金属盐0.001〜10重量份，在压力容器中的水分散介质中，得到混合物，将混合物加热至膨胀温度 高于树脂颗粒的软化温度，引入无机气体，并将混合物释放到比压力容器的内部压力低的气氛中; 所述混合物在所述混合物的温度保持在不大于膨胀温度至少至（膨胀温度-1℃）的温度区域下膨胀至少30分钟。
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3.发明申请公开(公告)号：US20050167870A1
公开(公告)日：2005-08-04
申请号：US10513923
申请日：2003-05-21
CPC分类号： C08J9/232 , B29C44/3453 , B29C44/3461 , C08J2323/02
摘要： An object of the present invention is to provide an inmold foaming method of a polyolefin based resin foamed article, wherein a pre-foamed particle having a large bulk density, which could be molded only by an impregnation method based on conventional technology having defect of expensive plant-and-equipment investment expense, may be molded using a compression filling molding method advantageous in productivity and plant-and-equipment investment expense, and thereby a charging ratio and surface appearance of the foamed article to be obtained may also be improved. The present invention is an inmold foaming method of a polyolefin based resin foam for charging, into a molding space, a pre-foamed particle including a polyolefin based resin as a base material resin, and having a bulk density of 30 kg/m3 to 100 kg/m3, and a DSC ratio of 5% to 35%, while pressurizing with an inorganic gas, and for heating with steam and welding the pre-foamed particle, wherein a pressurizing treatment of the pre-foamed particle is performed with a pressure of 0.3 MPa to 1.0 MPa with an inorganic gas before charging.
摘要翻译： 本发明的目的在于提供一种聚烯烃系树脂发泡体的发泡成型方法，其特征在于，具有大体积密度的预发泡粒子，其可以仅通过基于传统技术的浸渍方法成型，所述技术具有昂贵的缺陷 可以使用有利于生产率和设备投资费用的压缩填充成型方法来模制设备投资费用，从而也可以提高要获得的发泡制品的装料率和表面外观。 本发明是一种聚烯烃系树脂发泡体的成型发泡方法，其特征在于，在成形空间中，将包含聚烯烃系树脂作为基材树脂的预发泡粒子进行充填，所述预发泡粒子的体积密度为30kg / m 2 > 3℃至100kg / m 3，DSC比率为5％至35％，同时用无机气体加压，并用蒸汽加热并将预发泡颗粒 其中，在充电前用无机气体以0.3MPa〜1.0MPa的压力进行预发泡粒子的加压处理。
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公开(公告)号：US06506807B1
公开(公告)日：2003-01-14
申请号：US09592674
申请日：2000-06-13
IPC分类号： C08J916
CPC分类号： C08J9/0061 , B29C44/3461 , C08J9/18 , C08J2203/10 , C08J2323/02 , C08J2423/00
摘要： A process for preparing pre-expanded particles of a thermoplastic resin without washing the prepared pre-expanded particles to remove a dispersing agent remaining thereon and without discharging waste water, which comprises charging particles of a thermoplastic resin and an aqueous dispersion medium containing a dispersing agent into a closed pressure vessel, heating the resulting aqueous dispersion to a temperature of not less than the softening point of the thermoplastic resin, thereby impregnating the particles with water to have a water content of 1 to 50% by weight, releasing the dispersion into a lower pressure atmosphere, thereby expanding the particles, recovering the dispersion medium containing the dispersing agent, and recycling it as a dispersion medium to the pressure vessel.
摘要翻译： 一种用于制备热塑性树脂预发泡颗粒的方法，而不洗涤制备的预发泡颗粒以除去残留在其上的分散剂并且不排出废水，其包括装入热塑性树脂的颗粒和含有分散剂的水分散介质 进入封闭的压力容器中，将得到的水分散体加热到不低于热塑性树脂的软化点的温度，由此用水浸渍颗粒以使其含水量为1-50重量％，将分散体释放到 低压气氛，从而使颗粒膨胀，回收含有分散剂的分散介质，并将其作为分散介质再循环到压力容器中。
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公开(公告)号：US06627668B2
公开(公告)日：2003-09-30
申请号：US09916315
申请日：2001-07-30
IPC分类号： C08J922
CPC分类号： B29C44/3453 , B29C44/3461 , C08J9/18 , C08J2203/06 , C08J2323/02
摘要： Pre-expanded particles of polyolefin resin having less fluctuation in expansion ratio, uniform particle size and low expansion ratio are provided without using any volatile foaming agent. The low expansion ratio means 2 to 10 times, preferably 3 to 8 times. Resin particles to be released are uniformly contacted with saturated vapor at the time of pre-expanding polyolefin resin particles by dispersing the resin particles into an aqueous dispersion medium in a closed vessel, heating the resin particles to temperature of at least the softening point of the polyolefin resin and releasing the particles from the closed vessel into an atmosphere of lower pressure than the inner pressure of the closed vessel.
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6.发明授权Pre-expanded particles of propylene resin, process for preparing the same and flow-restricting device 失效丙烯树脂的预发泡颗粒，其制备方法和流动限制装置公开(公告)号：US06273347B1
公开(公告)日：2001-08-14
申请号：US09642025
申请日：2000-08-21
IPC分类号： B05B130
CPC分类号： C08J9/18 , C08J2203/06 , C08J2323/16 , C08L23/0876 , C08L23/10 , Y10S521/917 , C08L2666/04
摘要： There is provided pre-expanded particles of a propylene resin having a high expansion ratio and excellent molding adhesion without using a volatile blowing agent or increasing an expansion pressure. The pre-expanded particles of a propylene resin are prepared by the process comprising dispersing resin particles comprising a propylene resin composition, which contains 100 parts by weight of (A) a random copolymer of ethylene and propylene having an ethylene content of 1.5 to 4.5% by weight and 0.001 to 10 parts by weight of (B) an alkali metal salt of a copolymer of ethylene and (meth)acrylic acid, into an aqueous dispersion medium in a pressure vessel to obtain a mixture, heating the mixture to an expansion temperature higher than a softening temperature of the resin particles, introducing an inorganic gas, and releasing the mixture into a lower atmosphere than the inner pressure of the pressure vessel; said mixture is expanded after a temperature of said mixture is maintained at a temperature region of not more than the expansion temperature to at least (the expansion temperature −1° C.) for at least 30 minutes.
摘要翻译： 在不使用挥发性发泡剂或增加膨胀压力的情况下，提供具有高膨胀率和优异的模制粘合性的丙烯树脂的预发泡颗粒。 丙烯树脂的预发泡颗粒通过包括分散树脂颗粒的方法制备，所述树脂颗粒包含丙烯树脂组合物，其包含100重量份的（A）乙烯含量为1.5至4.5重量％的乙烯和丙烯的无规共聚物， 和（B）乙烯与（甲基）丙烯酸的共聚物的碱金属盐0.001〜10重量份，在压力容器中的水分散介质中，得到混合物，将混合物加热至膨胀温度 高于树脂颗粒的软化温度，引入无机气体，并将混合物释放到比压力容器的内部压力低的气氛中; 所述混合物在所述混合物的温度保持在不大于膨胀温度至少至（膨胀温度-1℃）的温度区域下膨胀至少30分钟。
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公开(公告)号：US5821272A
公开(公告)日：1998-10-13
申请号：US339
申请日：1998-01-20
CPC分类号： C08J9/22 , B29C44/3461 , B29C44/5609 , C08J2323/02 , Y10S264/09 , Y10S521/918
摘要： Post-treatment method of polyolefin resin pre-expanded particles comprising: introducing the polyolefin resin pre-expanded particles foamed by using an inflammable blowing agent into an extraction vessel filled with steam previously; feeding an additional steam into the extraction vessel; extracting the inflammable blowing agent gas from the polyolefin resin pre-expanded particles; discharging the resulting steam which contains the extracted inflammable blowing agent gas from the extraction vessel continuously or intermittently; and liquefying the steam to separate and recover the inflammable blowing agent gas. According to the post-treatment method of polyolefin resin pre-expanded particles, the inflammable blowing agent can be extracted from the pre-expanded particles in a short period of time and the extracted inflammable blowing agent can be re-used.
摘要翻译： PCT No.PCT / JP97 / 02074 Sec。 371日期1998年1月20日 102（e）日期1998年1月20日PCT提交1997年6月16日PCT公布。 第WO97 / 48759号公报 日期1997年12月24日聚烯烃树脂预发泡粒子的后处理方法包括：将通过使用可燃性发泡剂发泡的聚烯烃树脂预发泡颗粒引入预先装有蒸汽的萃取容器中; 将额外的蒸汽进料到提取容器中; 从聚烯烃树脂预发泡颗粒中提取易燃发泡剂气体; 从提取容器中连续或间歇地排出含有提取的易燃发泡剂气体的所得蒸汽; 并使蒸汽液化以分离和回收易燃发泡剂气体。 根据聚烯烃树脂预发泡颗粒的后处理方法，可以在短时间内从预发泡颗粒中提取易燃发泡剂，并且可以重新使用提取的可燃性发泡剂。
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8.发明授权Method of recovering volatile foaming agent from prefoamed beads of polyolefin resins 失效从聚烯烃树脂的预发泡珠回收挥发性发泡剂的方法
公开(公告)号：US4682989A
公开(公告)日：1987-07-28
申请号：US789672
申请日：1985-10-21
申请人： Hirofumi Maeda , Naruhiko Akamatsu
发明人： Hirofumi Maeda , Naruhiko Akamatsu
CPC分类号： C08J11/02 , Y10S264/09
摘要： The present invention provides a method of recovering volatile foaming agent contained in prefoamed beads of polyolefin resin characterized in that the volatile foaming agent contained in the prefoamed beads is recovered by bringing into contact with heated air prefoamed beads obtained by heating polyolefin resin beads containing the volatile foaming agent. According to the invented method it is possible to avoid not only aggravation of the working environments and atmospheric pollution but also risk of explosion etc. and, furthermore, material cost can be saved through reutilization of the recovered volatile foaming agent.
摘要翻译： 本发明提供一种回收包含在聚烯烃树脂的预发泡珠中的挥发性发泡剂的方法，其特征在于，通过与通过加热含有挥发性的聚烯烃树脂珠而获得的加热空气预开泡珠接触，回收预发泡珠中包含的挥发性发泡剂 发泡剂。 根据本发明的方法，不仅可以避免工作环境恶化和大气污染，而且可以避免爆炸等危险，此外，通过回收挥发性发泡剂的再利用可以节省材料成本。
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公开(公告)号：US4937271A
公开(公告)日：1990-06-26
申请号：US353579
申请日：1989-05-18
CPC分类号： C08J9/22 , B29C44/3461 , B29K2023/00 , Y10S521/918
摘要： A process for post-treating pre-expanded polyolefin resin particles which comprises charging in a vessel pre-expanded polyolefin resin particles which are pre-expanded by using an inflammable blowing agent, supplying an inert gas into the vessel, and then discharging the inert gas with the inflammable blowing agent gas extracted from the pre-expanded polyolefin resin particles, from the vessel. According to the process of the invention, the inflammable blowing agent can be extracted efficiently, safely and in a short time from the pre-expanded polyolefin resin particles which are pre-expanded by using the inflammable blowing agent. Consequently, the spontaneous cambustion of the particles can be completely avoided even if sparks are generated on the surface of the pre-expanded particles, therefore, it becomes easy to handle the pre-expanded polyolefin resin particles because the particles can be dried and transported by a pneumatic conveyer.
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10.发明授权Hydrous polyolefin resin composition, preexpanded particles produced therefrom, process for producing the same, and expanded molding 有权含水聚烯烃树脂组合物，由其制备的预剥离颗粒，其制备方法和膨胀成型公开(公告)号：US06596782B1
公开(公告)日：2003-07-22
申请号：US09155544
申请日：1998-09-25
IPC分类号： C08J916
CPC分类号： C08J9/18 , B29C44/3461 , C08J9/0061 , C08J2203/10 , C08J2323/02
摘要： A water-containing polyolefin resin composition containing a polyolefin resin and a hydrophilic polymer and having a water content of 1 to 50% by weight which is suitable for use in preparation of polyolefin resin pre-expanded particles, and pre-expanded particles of a polyolefin resin prepared by pre-expanding the water-containing polyolefin resin composition the particles having a an apparent expansion ratio of 5 to 60, a closed cell ratio of 80 to 100% and an average cell diameter of 50 to 500 &mgr;m. The pre-expanded particles can be prepared without using a volatile blowing agent by dispersing resin particles made of a polyolefin resin composition containing a polyolefin resin and a hydrophilic polymer into an aqueous dispersion medium in a closed vessel to form a dispersion, heating to a temperature not lower than the softening point of the polyolefin resin to produce water-containing resin particles having a water content of 1 to 50% by weight, and releasing the aqueous dispersion from the closed vessel into a lower pressure than the inner pressure of the closed vessel, thereby expanding the water-containing resin particles. When the releasing of the dispersion from the vessel is conducted after raising the inner pressure to 25 to 75 kg/cm2G by introducing nitrogen gas, air or an inorganic gas including them as a main component into the vessel, pre-expanded particles providing foams having good physical properties and a high expansion ratio are obtained.
摘要翻译： 含有聚烯烃树脂和亲水性聚合物的水含量聚烯烃树脂组合物，其水含量为1-50重量％，其适用于制备聚烯烃树脂预发泡颗粒和聚烯烃预发泡颗粒 通过将含水聚烯烃树脂组合物的表观膨胀率为5〜60，闭孔率为80〜100％，平均泡孔直径为50〜500μm的颗粒预膨胀而制备的树脂。 可以通过将含有聚烯烃树脂和亲水性聚合物的聚烯烃树脂组合物制成的树脂颗粒分散在密闭容器中的水性分散介质中而不使用挥发性发泡剂来制备预发泡颗粒，以形成分散体，加热到温度 不低于聚烯烃树脂的软化点，以产生水含量为1至50重量％的含水树脂颗粒，并将水分散体从密闭容器中释放到比密封容器的内部压力低的压力 从而使含水树脂颗粒膨胀。 当通过将氮气，空气或其中包含它们的无机气体作为主要成分将内部压力升高到25至75kg / cm2G之后进行容器的分散时，预发泡颗粒提供具有 获得良好的物理性能和高膨胀率。
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