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公开(公告)号:US12043700B2
公开(公告)日:2024-07-23
申请号:US17635739
申请日:2020-08-28
Applicant: KOLON INDUSTRIES, INC.
Inventor: Mee Hye Jeong , Ji Min Ha , Da Kyoung Yong , Ki Hyun Park
IPC: C08G63/183 , B01J23/46 , C07C29/143 , C07C45/59 , C08G18/32 , C08G18/76 , C08G63/199
CPC classification number: C08G63/199 , B01J23/462 , C07C29/143 , C07C45/59 , C08G18/3212 , C08G18/7671 , C08G63/183
Abstract: The present invention relates to a polyester or polyurethane polymer comprising a biomass-derived 1,3-cyclopentanediol monomer, and a method for preparing same.
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公开(公告)号:US10923732B2
公开(公告)日:2021-02-16
申请号:US16340908
申请日:2017-12-19
Applicant: KOLON INDUSTRIES, INC.
Inventor: Joon Young Yoon , Da Kyoung Yong
IPC: H01M4/88 , D01F9/16 , D21H13/50 , D21H25/06 , D21H19/10 , D21H17/70 , H01M8/0245 , D21H17/48 , D21H25/04 , D21H19/84 , H01M8/0234 , D21H19/20
Abstract: A method for producing a roll-type gas diffusion layer is disclosed. The method includes preparing a carbon paper from carbon fiber chops having a low modulus of 10 to 100 Gpa; impregnating the prepared carbon paper with a phenol resin, and then carbonizing the resin-impregnated carbon paper at 1,800 to 2,400° C.; forming a microporous polytetrafluoroethylene resin layer on one side of the carbonized carbon paper, to prepare a gas diffusion layer sheet; and winding the prepared gas diffusion layer sheet on a roll. Since the roll of gas diffusion layer is formed using the carbon fiber chops having a low modulus, the gas diffusion layer exhibits excellent and uniform spreading properties. Therefore, sealing between the gas diffusion layer and the fuel cell separation plate is reliably secured without using a separate binder.
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