Voided latex particles
    9.
    发明授权

    公开(公告)号:US11384216B2

    公开(公告)日:2022-07-12

    申请号:US16435716

    申请日:2019-06-10

    申请人: Arkema Inc.

    摘要: A process for forming voided latex particles is improved by combining swelling and polymerization of an outer shell into a single step. The process includes contacting multi-stage emulsion polymer particles comprising a core, at least one intermediate shell, with a swelling agent, and polymerizing an outer shell after said contacting with swelling agent wherein the core and the at least one intermediate shell are contacted with swelling agent in the presence of less than 0.5% monomer based on the weight of the multi-stage emulsion polymer particles, and substantially all of the swelling occurs during polymerization of the outer shell.

    METHOD AND DEVICE FOR PRODUCING FOAMED BODY

    公开(公告)号:US20210292509A1

    公开(公告)日:2021-09-23

    申请号:US17188989

    申请日:2021-03-01

    摘要: A method for producing a foamed body includes: forming a foamed layer precursor including applying a coating liquid onto a base to form a liquid film and applying an ink onto the liquid film by an inkjet method, where the coating liquid contains a foaming agent and an active energy ray curable material having a radical-polymerizable functional group, the active energy ray curable material contains a multifunctional active energy ray curable material having two or more radical-polymerizable functional groups, and the ink contains a foaming accelerator having a radical-polymerizable functional group; and foaming a desired position of the foamed layer precursor by heating to form a foamed layer. A functional group equivalent of the radical-polymerizable functional group in the foaming accelerator is greater than a functional group equivalent of the radical-polymerizable functional group in the active energy ray curable material.