公开(公告)号：US20230272233A1

公开(公告)日：2023-08-31

申请号：US18007017

申请日：2021-05-19

Applicant: SAKATA INX CORPORATION

Inventor： Toru KANEKO ,  Keishiro HISHINUMA ,  Kousuke NAGANUMA ,  Naoki OMI ,  Risa KUGENUMA

IPC: C09D11/101 ,  C09D11/107 ,  C09D11/08

CPC classification number: C09D11/101 ,  C09D11/08 ,  C09D11/107

Abstract: Provided is an active energy ray-curable ink composition for offset printing that exhibits superior properties comparable to ink compositions containing trimethylolpropane triacrylate (TMPTA), regardless of containing no TMPTA. This can be achieved through preparation of an active energy ray-curable ink composition for offset printing which contains at least one selected from the group consisting of diallyl phthalate resin, polyfunctional polyester acrylate, and rosin-modified alkyd resin having an sp value of 9.0 to 11.0 (cal/cm3)½, and contains ethylene oxide (EO)-modified TMPTA monomers having one to nine EO units in the molecule.

公开(公告)号：US20220356361A1

公开(公告)日：2022-11-10

申请号：US17754043

申请日：2020-11-10

Applicant: SAKATA INX CORPORATION

Inventor： Naoki OMI ,  Yuka YOKOYAMA ,  Keishiro HISHINUMA ,  Toru KANEKO

IPC: C09D11/04 ,  C09D11/101 ,  C09D11/08

Abstract: A polyester resin that is a condensation polymer of a polyol mixture including an epoxidized vegetable oil and a rosin additive, a polycarboxylic acid and a vegetable-derived polyol; has a mass ratio (rosin/epoxidized vegetable oil) between the rosin and the epoxidized vegetable oil of 2-10; and has a biomass content of at least 80%. The polyester resin has a high proportion of biomass-derived components and can be used to obtain an offset printing ink composition that has excellent scratch resistance and excellent abrasion resistance.