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1. 发明授权

US06130266A Pre-expanded particles of propylene resin, process for preparing the same and flow-restricting device 失效
标题翻译：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
申请人： Tsuyoshi Mihayashi , Nobuhisa Ota , Naruhiko Akamatsu , Yutaka Yanagihara , Takeshi Satoh
发明人： Tsuyoshi Mihayashi , Nobuhisa Ota , Naruhiko Akamatsu , Yutaka Yanagihara , Takeshi Satoh
IPC分类号： C08J9/18 , C08L23/08 , C08L23/10 , C08J9/16 , C08J9/22
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。

2. 发明授权

US06273347B1 Pre-expanded particles of propylene resin, process for preparing the same and flow-restricting device 失效
标题翻译：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
申请人： Tsuyoshi Mihayashi , Nobuhisa Ota , Naruhiko Akamatsu , Yutaka Yanagihara , Takeshi Satoh
发明人： Tsuyoshi Mihayashi , Nobuhisa Ota , Naruhiko Akamatsu , Yutaka Yanagihara , Takeshi Satoh
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。

3. 发明申请

US20050167870A1 Method of in-mold foam molding for polyolefin based resin foamed article 审中-公开
标题翻译：聚烯烃类树脂发泡制品的模内发泡成型方法
公开(公告)号：US20050167870A1
公开(公告)日：2005-08-04
申请号：US10513923
申请日：2003-05-21
申请人： Yutaka Yanagihara , Naruhiko Akamatsu
发明人： Yutaka Yanagihara , Naruhiko Akamatsu
IPC分类号： B29C44/34 , C08J9/232 , B29C44/02
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。

4. 发明授权

US06506807B1 Process for preparing pre-expanded particles of thermoplastic resin 失效
标题翻译：制备热塑性树脂预发泡颗粒的方法
公开(公告)号：US06506807B1
公开(公告)日：2003-01-14
申请号：US09592674
申请日：2000-06-13
申请人： Yutaka Yanagihara , Kenji Mogami , Naruhiko Akamatsu
发明人： Yutaka Yanagihara , Kenji Mogami , Naruhiko Akamatsu
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。

5. 发明授权

US06627668B2 Process for preparing polyolefin pre-expanded particles 有权
公开(公告)号：US06627668B2
公开(公告)日：2003-09-30
申请号：US09916315
申请日：2001-07-30
申请人： Shinobu Ochikoshi , Yutaka Yanagihara , Naruhiko Akamatsu
发明人： Shinobu Ochikoshi , Yutaka Yanagihara , Naruhiko Akamatsu
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.

6. 发明授权

US06593383B2 Process for preparing polyolefin pre-expanded particles 有权
标题翻译：制备聚烯烃预发泡颗粒的方法
公开(公告)号：US06593383B2
公开(公告)日：2003-07-15
申请号：US10157434
申请日：2002-05-29
申请人： Yutaka Yanagihara , Masahide Ebisui , Naruhiko Akamatsu
发明人： Yutaka Yanagihara , Masahide Ebisui , Naruhiko Akamatsu
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。

7. 发明授权

US06326409B1 In-mold foaming article of polypropylene resin composition 有权
标题翻译：聚丙烯树脂组合物的模内发泡制品
公开(公告)号：US06326409B1
公开(公告)日：2001-12-04
申请号：US09694264
申请日：2000-10-24
申请人： Tsuyoshi Mihayashi , Yutaka Yanagihara , Takayuki Goda
发明人： Tsuyoshi Mihayashi , Yutaka Yanagihara , Takayuki Goda
IPC分类号： C08J922
CPC分类号： C08J9/228 , C08J9/0061 , C08J9/18 , C08J2323/10 , C08L23/0876 , C08L23/10 , C08L2203/14 , C08L2666/04
摘要： The object of the present invention is to provide an in-mold foaming article of a propylene resin composition having improved productivity and stable quality in internal molding, and simultaneously a compressive strength and a tensile strength thereof at high density range are improved at the same time. The in-mold foaming article is obtained by using a pre-foamed particle having a density of 90 to 300 g/L and an open cell ratio of at most 12%, wherein the pre-foamed particle comprises a resin composition having (A) 100 parts by weight of a polypropylene resin and (B) 0.01 to 20 parts by weight of a hydrophilic polymer as a base material resin, and water as a foaming agent, the pre-foamed particle having at least two endothermic peaks in a DSC curve obtained in differential scanning calorimetry.
摘要翻译：本发明的目的是提供一种在内部成型中具有提高的生产率和稳定质量的丙烯树脂组合物的模内发泡制品，并同时提高在高密度范围内的抗压强度和抗拉强度。通过使用密度为90〜300g / L，开孔率为12％以下的预发泡粒子得到模内发泡体，其中，所述预发泡粒子包含具有（A）成分的树脂组合物， 100重量份的聚丙烯树脂和（B）0.01〜20重量份作为基材树脂的亲水性聚合物，作为发泡剂的水，预发泡颗粒在DSC曲线中具有至少两个吸热峰以差示扫描量热法获得。

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