公开(公告)号：US20230312948A1

公开(公告)日：2023-10-05

申请号：US18009403

申请日：2020-06-28

Applicant: DIC Corporation

Inventor： Shumei Ji ,  Issei Masuko ,  Masaki Hosaka ,  Kyoichi Okada ,  Nagatoshi Kobayashi ,  Xiyang Liao ,  Wei Zhao

IPC: C09D11/037 ,  C09D17/00 ,  C09D11/102 ,  C09D171/02 ,  C09B67/20 ,  C09B67/46

CPC classification number: C09D11/037 ,  C09D17/003 ,  C09D11/102 ,  C09D171/02 ,  C09B67/0066 ,  C09B67/009

Abstract: The issue of the present invention is to provide a disazo pigment in which the polychlorinated biphenyl (PCB) content in addition to the primary aromatic amine (PAA) content is reduced. The present invention provides a pigment composition containing a disazo pigment, an alkylamine that has an alkyl group having a carbon number of 8 or more, and a poly(oxyethylene) alkyl ester that has an alkyl group having a carbon number of 8 or more. Preferably, the disazo pigment includes at least one disazo pigment selected from a group consisting of C.I. Pigment Yellow 83, C.I. Pigment Yellow 13, and C.I. Pigment Yellow 14.

公开(公告)号：US20230257588A1

公开(公告)日：2023-08-17

申请号：US18009427

申请日：2020-06-28

Applicant: DIC Corporation

Inventor： Shumei Ji ,  Issei Masuko ,  Masaki Hosaka ,  Kyoichi Okada ,  Nagatoshi Kobayashi ,  Xiyang Liao ,  Wei Zhao

IPC: C09B35/039 ,  C09D11/037

CPC classification number: C09B35/039 ,  C09D11/037

Abstract: The issue of the present invention is to provide a disazo pigment with high safety in which the content of chemical substances that may be harmful, in particular, in the food packaging field and the like and that may be regulated substances is reduced. A disazo pigment according to the present invention has a polychlorinated biphenyl content of less than 15 ppm and a primary aromatic amine content of less than 700 ppm. Preferably, the disazo pigment is at least one selected from a group consisting of C.I. Pigment Yellow 83, C.I. Pigment Yellow 13, and Cl. Pigment Yellow 14.