Compositions and processes to increase pulp yield, reduce extractives, and reduce scaling in a chemical pulping process
US8920602B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Oct 4, 2010 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Oct 4, 2030 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21C3/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In general, the present disclosure is directed to compositions and processes to increase pulp yield, reduce extractives, and reduce scaling in a chemical pulping process. In one particular embodiment, for instance, the present disclosure is directed to a composition comprising a surface active agent, an alkaline mixture, at least one polymer, the polymer having a linear backbone segment having two ends, at least one phosphorus component, the phosphorus component chemically linked along the linear backbone segment of the polymer, and at least one end component, the end component chemically linked to one or both ends of the linear backbone segment of the polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.