BLACK PIGMENT DISPERSION

An object of the present invention is to prevent the gelation of a dispersion or change in viscosity of the dispersion during storage and to improve dispersibility when the pigment dispersion containing lactam black is prepared. A lactam black is used together with a copolymer comprising a monomer A...

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Bibliographic Details
Main Authors YAMAMOTO TAKUYA, KAJIMURA HIROTO, KATAYAMA KAZUYA, NOZAWA TAKAHIRO
Format Patent
LanguageEnglish
Korean
Published 25.04.2022
Subjects
ADHESIVES
CHEMISTRY
DYES
LAKES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MORDANTS
NATURAL RESINS
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES
PAINTS
PHYSICS
POLISHES
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Summary:An object of the present invention is to prevent the gelation of a dispersion or change in viscosity of the dispersion during storage and to improve dispersibility when the pigment dispersion containing lactam black is prepared. A lactam black is used together with a copolymer comprising a monomer A having a structure of chemical formula 1 as a dispersant, a monomer B having a nitrogen-containing aromatic heterocyclic group as a basic functional group, and a monomer C polymerizable with the monomer A and the monomer B. The content of lactam black is from 5% by mass to 25% by mass. The average particle diameter of the lactam black is preferably adjusted to 200 nm or less. [과제] 락탐 블랙을 함유하는 안료 분산액을 조제할 때, 분산액이 겔화되거나, 보존 중에 분산액의 점도가 변화하거나 하는 것을 방지하고, 분산성을 향상시키는 것. [해결수단] 락탐 블랙과, 분산제로서 화학식 1의 구조를 갖는 단량체 A와, 염기성 관능기로서 질소 함유 방향족 복소환기를 갖는 단량체 B와, 단량체 A 및 단량체 B와 중합 가능한 단량체 C로 구성되는 공중합체를 병용한다. 락탐 블랙의 함유량은 5질량% 이상 25질량% 이하다. 락탐 블랙의 평균 입자 지름은 200 nm 이하로 조정되는 것이 바람직하다.
Bibliography:Application Number: KR20210128648