公开(公告)号：US12180311B2

公开(公告)日：2024-12-31

申请号：US17310705

申请日：2020-03-18

Applicant: Osaka Soda Co., Ltd.

Inventor： Taro Ozaki ,  Motoki Kitagawa ,  Masatsugu Naitou ,  Ryo Okada

IPC: C08F2/24 ,  C08F6/22 ,  C08F220/18 ,  C08F220/28

Abstract: There is provided a method for more easily producing an acrylic rubber capable of providing a crosslinked rubber having excellent water resistance. A method for producing an acrylic rubber comprising the steps of subjecting a monomer to emulsion polymerization to obtain a polymerized emulsion; mixing the polymerized emulsion with a coagulant to obtain a water-containing crumb; and water-washing the water-containing crumb, wherein, in the step of water-washing the water-containing crumb, the water-containing crumb is water-washed until an electrical conductivity of the washing water after water-washing the water-containing crumb becomes 6.0 mS/cm or less.

公开(公告)号：US20160222161A1

公开(公告)日：2016-08-04

申请号：US14917989

申请日：2014-10-06

Applicant: OSAKA SODA CO., LTD.

Inventor： Tsuyoshi Imaoka ,  Toshiyuki Funayama ,  Yoshinori Ashida ,  Taro Ozaki

IPC: C08G65/334 ,  C08K5/43 ,  C08K5/053 ,  C08K3/26

CPC classification number: C08G65/3348 ,  C08G65/333 ,  C08K3/26 ,  C08K5/053 ,  C08K5/43 ,  C08K2003/267 ,  C08L71/03

Abstract: A crosslinking composition comprising an epichlorohydrin based polymer (a), a triazine type crosslinking agent (b), and magnesium carbonate (c). The crosslinking composition further comprises a polyhydric alcohol (d) which is preferably pentaerythritol type compound. In the crosslinking composition, the polyhydric alcohol (d) is preferably contained in an amount of 0.1 to 10 parts by weight for 100 parts by weight of the epichlorohydrin based polymer (a).

Abstract translation: 包含表氯醇类聚合物（a），三嗪型交联剂（b）和碳酸镁（c）的交联组合物。 交联组合物还包含多元醇（d），其优选为季戊四醇型化合物。 在交联组合物中，相对于100重量份表氯醇系聚合物（a），多元醇（d）的含量优选为0.1〜10重量份。

公开(公告)号：US20220185913A1

公开(公告)日：2022-06-16

申请号：US17310705

申请日：2020-03-18

Applicant: Osaka Soda Co., Ltd.

Inventor： Taro Ozaki ,  Motoki Kitagawa ,  Masatsugu Naitou ,  Ryo Okada

IPC: C08F2/24 ,  C08F220/18 ,  C08F220/28 ,  C08F6/22

Abstract: There is provided a method for more easily producing an acrylic rubber capable of providing a crosslinked rubber having excellent water resistance. A method for producing an acrylic rubber comprising the steps of subjecting a monomer to emulsion polymerization to obtain a polymerized emulsion; mixing the polymerized emulsion with a coagulant to obtain a water-containing crumb; and water-washing the water-containing crumb, wherein, in the step of water-washing the water-containing crumb, the water-containing crumb is water-washed until an electrical conductivity of the washing water after water-washing the water-containing crumb becomes 6.0 mS/cm or less.