Deinking agent for reproduction of printed waste papers
US5158697A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1990 |
| Grant date | Oct 27, 1992 |
| Priority date | — |
| Expiry date | Aug 17, 2010 |
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 to an deinking agent used for reproduction of printed waste papers such as newspapers, magazines, leaflets and the like, and mainly contains one or more additives selected from the group comprising PA1 (a) additives made by adding one or more selected from alkylene oxides to at least one selected from dimer acids and polymer acids of higher unsaturated fatty acids having a carbon number of 16-20; PA1 (b) additives made by adding one or more selected from alkylene oxides to at least one selected from partial esters which are made of an alcohol having a carbon number of 1-18 and dimer acids and polymer acids of higher unsaturted fatty acids having a carbon number of 16-20; PA1 (c) additives made by adding one or more selected from alkylene oxides to one or more selected from dicarboxylic acids or dicarboxylic acid monoesters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.