公开(公告)号：US20190276584A1

公开(公告)日：2019-09-12

申请号：US16335407

申请日：2017-01-31

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Zhang-Lin ZHOU ,  Rodney David STRAMEL ,  Gregg A. LANE

IPC: C08G18/67 ,  C08G18/75 ,  C08G18/08 ,  C09D11/322 ,  C09D11/38

Abstract: The present disclosure is drawn to a reactive polyurethane dispersion including a polymer strand having a polymer backbone that has two ends terminating at a first capping unit and a second capping unit. The polymer backbone can include polymerized monomers including a reactive diol and a diisocyanate. The reactive diol can be an acrylate-containing diol, a methacrylate-containing diol, an allyl-containing diol, or combination thereof. The first capping unit can be an allyl-containing monoalcohol reacted with an isocyanate group of the diisocyanate. The second capping unit can be an ionic stabilizing group.

公开(公告)号：US20190184725A1

公开(公告)日：2019-06-20

申请号：US16331239

申请日：2017-02-07

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Zhang-Lin ZHOU ,  Rodney David STRAMEL ,  Gregg A. LANE

IPC: B41M5/00 ,  C09D11/54 ,  C09D11/322 ,  C09D11/38 ,  B41M7/00

CPC classification number: B41M5/0017 ,  B41M5/5209 ,  B41M5/5281 ,  B41M7/0081 ,  C09D11/101 ,  C09D11/322 ,  C09D11/38 ,  C09D11/40 ,  C09D11/54

Abstract: The present disclosure relates to an inkjet printing process that comprises inkjet printing an inkjet ink composition onto a substrate to form a printed inkjet ink layer. The inkjet ink composition comprises a colorant, a curable polyurethane dispersion, a photoinitiator and water, wherein the amount of curable polyurethane dispersed in the inkjet ink composition is 0.1 to 30 weight %. A radiation-curable overcoat composition is inkjet printed over the printed inkjet ink layer as an overcoat layer. The overcoat composition comprises a curable polyurethane dispersion, a photoinitiator and water, wherein the amount of curable polyurethane dispersed in the overcoat composition is 0.1 to 30 weight %. The printed inkjet ink layer is cured by exposing both the printed inkjet ink layer and the overcoat layer on the substrate to radiation.