26-12-2013 дата публикации
Номер: US20130340964A1
Принадлежит:
The invention is directed to methods and compositions for reducing the deposition of pitches and stickies in a papermaking process. The method involves introducing an anionic glycerol-based polymer to the papermaking process. This anionic polymer prevents the pitches and stickies from depositing and agglomerating in papermaking processes. 1. A method of reducing the deposition of organic contaminants in papermaking processes , comprising adding to pulp or a papermaking system an effective amount of a composition comprising an anionic lipophilic branched , cyclic glycerol-based polymer , wherein the composition selectively bonds with the organic contaminants to form a complex and the complex is stable in papermaking processes.2. The method of claim 1 , wherein the anionic group is one selected from the list consisting of phosphates claim 1 , phosphonates claim 1 , carboxylates claim 1 , sulfonates claim 1 , the like and any combination thereof.3. The method of claim 1 , wherein the glycerol-based polymer is an anionic lipohydrophilic glycerol based polymer.4. The method of claim 1 , wherein the glycerol-based polymer is branched claim 1 , hyperbranched claim 1 , dendritic claim 1 , cyclic or any combination thereof.5. The method of claim 1 , wherein the branched claim 1 , cyclic glycerol-based polymer is cross-linked.7. The method of claim 6 , wherein each Ris independently selected from hydrogen claim 6 , C-Calkyl claim 6 , and —C(O)CH(OH)CH.9. The method of claim 6 , wherein m claim 6 , n claim 6 , o claim 6 , p claim 6 , q and r are independently selected from 0 claim 6 , 1 claim 6 , 2 claim 6 , 3 claim 6 , 4 claim 6 , 5 claim 6 , 6 claim 6 , 7 claim 6 , 8 claim 6 , 9 claim 6 , 10 claim 6 , 11 claim 6 , 12 claim 6 , 13 claim 6 , 14 claim 6 , 15 claim 6 , 16 claim 6 , 17 claim 6 , 18 claim 6 , 19 claim 6 , 20 claim 6 , 21 claim 6 , 22 claim 6 , 23 claim 6 , 24 claim 6 , 25 claim 6 , 26 claim 6 , 27 claim 6 , 28 claim 6 , 29 claim 6 , 30 claim 6 , 31 claim 6 , 32 ...
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