RU2007139887A - IMPROVED COMPOSITIONS AND METHODS OF PAPER PRODUCTION - Google Patents
IMPROVED COMPOSITIONS AND METHODS OF PAPER PRODUCTION Download PDFInfo
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- RU2007139887A RU2007139887A RU2007139887/12A RU2007139887A RU2007139887A RU 2007139887 A RU2007139887 A RU 2007139887A RU 2007139887/12 A RU2007139887/12 A RU 2007139887/12A RU 2007139887 A RU2007139887 A RU 2007139887A RU 2007139887 A RU2007139887 A RU 2007139887A
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- bleached
- cellulosic material
- pulp
- bleached cellulosic
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Abstract
1. Способ изготовления беленого целлюлозного материала, обладающего повышенной белизной и повышенной устойчивостью к термическому пожелтению, включающий: ! i) получение беленого целлюлозного материала и ! ii) контакт беленого целлюлозного материала с достаточным количеством одного или более восстанавливающих агентов. ! 2. Способ по п.1, дополнительно включающий контакт беленого целлюлозного материала с одним или более оптическими отбеливателями. ! 3. Способ по п.1, дополнительно включающий контакт беленого целлюлозного материала с одним или более хелатирующими агентами. ! 4. Способ по п.1, где беленый целлюлозный материал выбирают из группы, состоящей из целлюлозы из первичного сырья, макулатурной массы, крафт-целлюлозы, сульфитной целлюлозы, древесной массы, любой комбинации перечисленных видов целлюлозы, утилизированной макулатуры, санитарно-гигиенической бумаги и любой бумаги или бумажной продукции, изготовленной из перечисленных видов целлюлозы или их сочетаний. ! 5. Способ по п.1, где восстанавливающий агент выбирают из группы, состоящей из сульфитов, бисульфитов, метабисульфитов (пиросульфитов), сульфоксилатов, тиосульфатов, дитионитов (гидросульфитов), политионатов, формамидинсульфиновой кислоты, ее солей и производных, аддукта формальдегида и бисульфита и других аддуктов альдегидов и бисульфита, сульфинамидов и простых эфиров сульфиновой кислоты, сульфенамидов и простых эфиров сульфеновой кислоты, сульфамидов, фосфинов, солей фосфония, фосфитов и тиофосфитов. ! 6. Способ по п.5, где восстанавливающий агент выбирают из группы, состоящей из замещенных форсфинов, сульфитов, бисульфитов и метабисульфитов. ! 71. A method of manufacturing a bleached cellulosic material having increased whiteness and increased resistance to thermal yellowing, including:! i) obtaining bleached cellulosic material and! ii) contacting the bleached cellulosic material with a sufficient amount of one or more reducing agents. ! 2. The method according to claim 1, further comprising contacting the bleached cellulosic material with one or more optical brighteners. ! 3. The method according to claim 1, further comprising contacting the bleached cellulosic material with one or more chelating agents. ! 4. The method according to claim 1, where the bleached pulp material is selected from the group consisting of cellulose from primary raw materials, waste paper, kraft pulp, sulphite pulp, wood pulp, any combination of these types of cellulose, recycled waste paper, sanitary paper and any paper or paper products made from the listed types of pulp or combinations thereof. ! 5. The method according to claim 1, where the reducing agent is selected from the group consisting of sulfites, bisulfites, metabisulfites (pyrosulfites), sulfoxylates, thiosulfates, dithionites (hydrosulfites), polythionates, formamidinesulfinic acid, its salts and derivatives, formaldehyde adduct and bisulfite and other adducts of aldehydes and bisulfite, sulfinamides and ethers of sulfinic acid, sulfenamides and ethers of sulfenic acid, sulfamides, phosphines, phosphonium salts, phosphites and thiophosphites. ! 6. The method according to claim 5, where the reducing agent is selected from the group consisting of substituted forsphines, sulfites, bisulfites and metabisulfites. ! 7
Claims (24)
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/102,318 US20060229393A1 (en) | 2005-04-08 | 2005-04-08 | Compositions and methods for enhancing brightness and brightness stabilization in papermaking |
US11/102,318 | 2005-04-08 | ||
US71847505P | 2005-09-19 | 2005-09-19 | |
US60/718,475 | 2005-09-19 | ||
US60/721,847 | 2005-09-29 | ||
US11/387,499 | 2006-03-23 | ||
US11/387,499 US8246780B2 (en) | 2005-09-19 | 2006-03-23 | Methods for enhancing brightness and resistance to thermal yellowing of bleached kraft pulp and paper |
Publications (2)
Publication Number | Publication Date |
---|---|
RU2007139887A true RU2007139887A (en) | 2009-05-20 |
RU2387751C2 RU2387751C2 (en) | 2010-04-27 |
Family
ID=41021106
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU2007139887/12A RU2387751C2 (en) | 2005-04-08 | 2006-04-07 | Method for production of bleached cellulose material, method for prevention of yellowing and loss of whiteness in bleached craft-cellulose in storage and method for production of paper goods |
Country Status (1)
Country | Link |
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RU (1) | RU2387751C2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2507248C2 (en) * | 2009-08-27 | 2014-02-20 | Дзе Проктер Энд Гэмбл Компани | Method of neutralising colour of compositions |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9926665B2 (en) * | 2016-02-25 | 2018-03-27 | International Paper Company | Crosslinked cellulose as precursor in production of high-grade cellulose derivatives and related technology |
-
2006
- 2006-04-07 RU RU2007139887/12A patent/RU2387751C2/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2507248C2 (en) * | 2009-08-27 | 2014-02-20 | Дзе Проктер Энд Гэмбл Компани | Method of neutralising colour of compositions |
Also Published As
Publication number | Publication date |
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RU2387751C2 (en) | 2010-04-27 |
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