Patent ID: 8920602
Filing Date: 2014-12-30
Classification: D21C

Abstract:
1. A process for cooking wood in a cooking liquor medium comprising: contacting wood with a composition comprising an alkaline mixture, a surface active agent, and at least one polymer stable at temperatures above 250° C., the at least one polymer comprising a carbon linear backbone segment having two end components or a carbon and phosphorous linear backbone segment having two end components, the at least one polymer comprising at least one phosphorus containing monomer, the phosphorus containing monomer comprising a phosphorous atom that is either directly chemically linked to the linear backbone segment of the polymer, forms part of the linear backbone segment of the polymer, or any combination thereof, the phosphorus containing monomer comprising a phosphonate, a phosphinate, or any combination thereof wherein the phosphinate is formed from a compound having the structure: wherein R wherein R cooking the wood that has been contacted with the composition to produce a pulp.