Colorant for plastic, coloring composition for plastic using the same, and plastic molded article
US10633510B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 4, 2014 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Aug 2, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/0041
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A colorant for plastic containing a halogenated phthalocyanine pigment (A) that satisfies conditions (1) to (4) below: (1) the average number of halogen substitutions is at least 2.0 but not more than 7.0, (2) the halogen distribution width is at least 5, (3) the amount of aluminum phthalocyanine and halogenated aluminum phthalocyanine is not more than 1.0% by mass, and (4) the central element is at least one element selected from the group consisting of hydrogen, manganese, iron, cobalt, zinc, nickel and copper. As a result, a colorant for plastic can be shown that can color a resin without changing the mechanical or chemical properties of the resin, and in particular can produce a plastic molded article having essentially no migration, extremely low discoloration due to heat, and no deformation such as warping and distortion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.