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。

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。