公开(公告)号：US20230159686A1

公开(公告)日：2023-05-25

申请号：US17916249

申请日：2021-03-30

申请人： Midori Anzen Co., Ltd. ,  BST Specialty Co., Ltd.

发明人： Norihide Enomoto ,  Atsushi Morinaga ,  Hisanori Ota

IPC分类号： C08F236/12 ,  C08K5/1515 ,  C08K3/22

CPC分类号： C08F236/12 ,  C08K5/1515 ,  C08K3/22 ,  C08K2003/2296

摘要： Provided is a dip molding composition which contains at least: a carboxyl group-containing nitrile rubber elastomer; an epoxy crosslinking agent containing an epoxy compound that contains three or more glycidyl ether groups in one molecule and has a basic skeleton containing an alicyclic, aliphatic or aromatic hydrocarbon; and a pH modifier. In this dip molding composition, the elastomer contains 50% by weight or more, 78% by weight or less of a conjugated diene monomer-derived structural unit, 20% by weight or more, 30% by weight or less of an ethylenically unsaturated nitrile monomer-derived structural unit, and 3.5% by weight or more, 6% by weight or less of an ethylenically unsaturated carboxylic acid monomer-derived structural unit; the elastomer has an MEK-insoluble content of 60% by weight or more, 80% by weight or less; and the epoxy crosslinking agent has an MIBK/water distribution ratio of 50% or higher.

公开(公告)号：US20230357460A1

公开(公告)日：2023-11-09

申请号：US18028391

申请日：2021-09-27

申请人： Midori Anzen Co., Ltd. ,  BST Specialty Co., Ltd.

发明人： Norihide Enomoto ,  Atsushi Morinaga ,  Yamato Takeuchi ,  Hisanori Ota

IPC分类号： C08F36/06 ,  C08L9/04 ,  C08K3/22 ,  B29C41/00 ,  B29C41/14 ,  B29C41/46

CPC分类号： C08F36/06 ,  C08L9/04 ,  C08K3/22 ,  B29C41/003 ,  B29C41/14 ,  B29C41/46 ,  C08L2312/00 ,  C08K2003/2296 ,  B29K2009/00

摘要： Provided is a dip molding composition containing at least a nitrile rubber elastomer containing a carboxyl group and an amide group. In this dip molding composition, the elastomer contains 50% by weight or more, 78% by weight or less of a conjugated diene monomer-derived structural unit, 17% by weight or more, 35% by weight or less of an ethylenically unsaturated nitrile monomer-derived structural unit, 2.0% by weight or more, 8.0% by weight or less of an ethylenically unsaturated carboxylic acid monomer-derived structural unit, and 0.5% by weight or more, 5.0% by weight or less of an amide group-containing monomer-derived structural unit, and has an MEK-insoluble content of 50% by weight or more, 80% by weight or less.