Invention Grant
- Patent Title: Pre-treatments for packaging print media
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Application No.: US17417519Application Date: 2019-09-12
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Publication No.: US11767445B2Publication Date: 2023-09-26
- Inventor: Rajasekar Vaidyanathan , Jason Swei
- Applicant: Hewlett-Packard Development Company, L.P.
- Applicant Address: US TX Spring
- Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee: Hewlett-Packard Development Company, L.P.
- Current Assignee Address: US TX Spring
- Agency: HP Inc. Patent Department
- International Application: PCT/US2019/050798 2019.09.12
- International Announcement: WO2021/050071A 2021.03.18
- Date entered country: 2021-06-23
- Main IPC: C09D129/04
- IPC: C09D129/04 ; C09D7/63 ; C09D175/04 ; C09D191/06 ; B32B29/08 ; C08L75/04 ; C08L91/06 ; B41M5/52 ; B32B29/00 ; B41M5/00

Abstract:
A pre-treatment coating composition includes evaporable liquid vehicle and a pre-treatment coating matrix, including from 30 wt % to 70 wt % multivalent organic salt, from 5 wt % to 30 wt % dispersed polyurethane binder having a weight average molecular weight from 30,000 Mw to 100,000 Mw, from 0.5 wt % to 8 wt % of a high molecular weight polyvinyl alcohol binder, and from 10 wt % to 30 wt % of a low molecular weight polyvinyl alcohol binder. The low molecular weight polyvinyl alcohol binder and the high molecular weight polyvinyl alcohol binder are present in the pre-treatment coating matrix at a 3:1 to 15:1 weight ratio, and weight percentages are based on dry weight of the pre-treatment coating matrix.
Public/Granted literature
- US20220194109A1 PRE-TREATMENTS FOR PACKAGING PRINT MEDIA Public/Granted day:2022-06-23
Information query
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