发明申请
- 专利标题: PIGMENT COMPOSITION
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申请号: US16204873申请日: 2018-11-29
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公开(公告)号: US20190264030A1公开(公告)日: 2019-08-29
- 发明人: Junichiro Sato , Takeshi Nishikawa
- 申请人: Sanyo Color Works, Ltd.
- 优先权: JP2017-231733 20171201
- 主分类号: C09B29/033
- IPC分类号: C09B29/033 ; C09B29/34 ; C09D11/328 ; G03G9/09
摘要:
A pigment composition contains: an azo pigment that is a reaction product between a coupler and a base; and a pigment derivative, and a content of o-anisidine derived from the coupler is less than or equal to 20 mg/kg in the entire pigment composition. A method for producing the pigment composition includes, after reaction between a coupler and a base to generate an azo pigment, or during the reaction between the coupler and the base, adding a remover for o-anisidine derived from the coupler.
公开/授权文献
- US11549018B2 Pigment composition 公开/授权日:2023-01-10
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