Aqueous resin dispersion for heat-sensitive recording material and heat-sensitive recording material using the same
US5677365A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1994 |
| Grant date | Oct 14, 1997 |
| Priority date | — |
| Expiry date | Feb 3, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M2205/40
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An aqueous resin dispersion for a heat-sensitive recording material is disclosed. The aqueous resin dispersion is obtained by the use of polyvinyl alcohol as an emulsifier and the use of two steps of polymerization. In the first step of polymerization, a polymeric monomer composition A is polymerized, composition A containing polymeric multi-functional monomers which constitute 15% by weight or more of the total weight of the polymeric monomers used for the first step. And, in the second step, a polymeric monomer composition B is polymerized, The invention also discloses a heat-sensitive recording material using such an aqueous resin dispersion as a color-developing layer or a protective coating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.