Composition for enhancing the pulping of wood chips
US5298120A · kind A · utility
15Cited by
5References
7Claims
0Family size
Inventor
Key dates
| Filing date | Jun 9, 1992 |
| Grant date | Mar 29, 1994 |
| Priority date | — |
| Expiry date | Jun 9, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S516/06
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A novel composition for use in a process for cooking wood to form pulp and processes for using same are provided. The composition and variations thereof are useful in enhancing the uniformity of wood cooking and reducing the rejects in a pulping process for the production of pulp. The composition comprises esters of block copolymers having the general formula ##STR1## wherein x, y, and z each have a value of at least one.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.