Method of dispersing wax from a hot melt wax-coated paper
US6273993A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 11, 1995 |
| Grant date | Aug 14, 2001 |
| Priority date | — |
| Expiry date | Jan 11, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/64
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates generally to a hot melt wax coating composition containing at least one chemical compound which is either itself capable of acting as a latent dispersant for the coating or capable of being chemically modified so as to act as a dispersant for the coating, within an aqueous environment, thus rendering the hot melt coating more readily redispersable. The present invention also relates to a coated paper product using such coating which renders the coated paper more readily repulpable (recyclable) with standard paper mill equipment. Other related aspects of the present invention include a method of coating paper with the novel coating composition and a method of repulping such coated paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.