Aqueous dispersions including polyester particles, photopolymerizable compositions, articles, and methods

    公开(公告)号:US11091579B2

    公开(公告)日:2021-08-17

    申请号:US17047409

    申请日:2019-06-17

    Abstract: The present disclosure provides an aqueous dispersion. The aqueous dispersion includes a) water; b) a surfactant having at least one ethylenically unsaturated group; and c) polyester particles dispersed in the water. The polyester particles include a water-insoluble polyester having a weight average molecular weight of 20 kiloDaltons or greater, and the polyester particles have an average diameter that is submicron in size. Further, the present disclosure provides a method of making the aqueous dispersion. The method includes a) dissolving a water-insoluble polyester in a water-immiscible solvent to form a polyester solution; b) combining the polyester solution with an aqueous solution including water and a surfactant; and c) removing at least a portion of the water-immiscible solvent to form the aqueous dispersion including polyester particles dispersed in the water. The present disclosure also provides a photopolymerizable composition including a) water; b) a surfactant; c) polyester particles dispersed in the water; d) a photoinitiator; e) at least one ethylenically unsaturated monomer dispersed in the water; and f) an optional polymerization inhibitor. The present disclosure also provides coatings and articles prepared from the aqueous dispersion or photopolymerizable composition.

    AQUEOUS DISPERSIONS INCLUDING POLYESTER PARTICLES, PHOTOPOLYMERIZABLE COMPOSITIONS, ARTICLES, AND METHODS

    公开(公告)号:US20210108019A1

    公开(公告)日:2021-04-15

    申请号:US17047409

    申请日:2019-06-17

    Abstract: The present disclosure provides an aqueous dispersion. The aqueous dispersion includes a) water; b) a surfactant having at least one ethylenically unsaturated group; and c) polyester particles dispersed in the water. The polyester particles include a water-insoluble polyester having a weight average molecular weight of 20 kiloDaltons or greater, and the polyester particles have an average diameter that is submicron in size. Further, the present disclosure provides a method of making the aqueous dispersion. The method includes a) dissolving a water-insoluble polyester in a water-immiscible solvent to form a polyester solution; b) combining the polyester solution with an aqueous solution including water and a surfactant; and c) removing at least a portion of the water-immiscible solvent to form the aqueous dispersion including polyester particles dispersed in the water. The present disclosure also provides a photopolymerizable composition including a) water; b) a surfactant; c) polyester particles dispersed in the water; d) a photoinitiator; e) at least one ethylenically unsaturated monomer dispersed in the water; and f) an optional polymerization inhibitor. The present disclosure also provides coatings and articles prepared from the aqueous dispersion or photopolymerizable composition.

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