Invention Grant
- Patent Title: Hydrophilic pigment dispersant for an inkjet ink
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Application No.: US15518232Application Date: 2014-10-31
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Publication No.: US10196533B2Publication Date: 2019-02-05
- Inventor: Tienteh Chen , June Yang , Marcos A. Barreto
- 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: Dierker & Kavanaugh PC
- International Application: PCT/US2014/063355 WO 20141031
- International Announcement: WO2016/068985 WO 20160506
- Main IPC: C09D11/033
- IPC: C09D11/033 ; C09D11/102 ; C09D11/107 ; C09D11/322 ; C09D11/326 ; C09D11/38

Abstract:
A hydrophilic pigment dispersant for an inkjet ink includes water and a hydrophilic polyurethane having a weight average molecular weight from 3,000 to 15,000, and an acid number ranging from 50 to 100. The polyurethane is formed from 25 wt % to 70 wt % of a non-aromatic polyisocyanate; 0 wt % to 60 wt % of a polyol having a weight average molecular weight from 500 to 5,000; 0 wt % to 30 wt % of an aromatic diol having a weight average molecular weight ranging from 100 to 1000; 5 wt % to 25 wt % of an acid monomer having a hydroxyl functional group, an amino functional group, or both hydroxyl and amino functional groups; and 0 wt % to 5 wt % of a polyethyleneoxide compound having a hydroxyl functional group, an amino functional group, or both hydroxyl and amino functional groups; wherein at least one of the polyol or the aromatic diol is present.
Public/Granted literature
- US20170247558A1 HYDROPHILIC PIGMENT DISPERSANT FOR AN INKJET INK Public/Granted day:2017-08-31
Information query
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