Invention Grant
- Patent Title: White inks
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Application No.: US15544301Application Date: 2015-04-27
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Publication No.: US10167400B2Publication Date: 2019-01-01
- Inventor: Paul Joseph Bruinsma , Vladek Kasperchik , Thomas W. Butler
- Applicant: Hewlett-Packard Development Company, L.P.
- Applicant Address: US TX Houston
- Assignee: Hewlett Packard Development Company, L.P.
- Current Assignee: Hewlett Packard Development Company, L.P.
- Current Assignee Address: US TX Houston
- Agency: Thorpe North & Western LLP
- International Application: PCT/US2015/027833 WO 20150427
- International Announcement: WO2016/175749 WO 20161103
- Main IPC: C09D11/322
- IPC: C09D11/322 ; C09D11/102 ; C09D11/326 ; C09D11/54 ; C09D11/03 ; C09D11/107

Abstract:
The present disclosure provides a white ink including an aqueous ink vehicle, from 5 wt % to 50 wt % of a white metal oxide pigment having an average particulate size from 100 nm to 2,000 nm, from 0.02 wt % to 2 wt % of an anionic low molecular weight polymer having a weight average molecular weight of 3,000 Mw to 50,000 Mw and an acid number higher than 100 mg KOH/g based on dry polymer weight, and from 2 wt % to 30 wt % of latex particulates having a glass transition temperature from 0 C to 130 C. Furthermore, the white metal oxide pigment is dispersed by a non-ionic or predominantly non-ionic dispersant having an acid number not higher than 100 mg KOH/g based on dry polymer weight.
Public/Granted literature
- US20170369722A1 WHITE INKS Public/Granted day:2017-12-28
Information query
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