Blends of glyoxalated polyacrylamides and paper strengthening agents
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
D21H-017/55
D21H-017/00
C08F-008/00
출원번호
US-0919488
(2004-08-17)
등록번호
US-7488403
(2009-02-10)
발명자
/ 주소
Hagiopol,Cornel
Luo,Yuping
Townsend,David F.
Johnston,James W.
Ringold,Clay E.
Favors,Karla D.
출원인 / 주소
Hagiopol,Cornel
Luo,Yuping
Townsend,David F.
Johnston,James W.
Ringold,Clay E.
Favors,Karla D.
인용정보
피인용 횟수 :
19인용 특허 :
31
초록▼
Compositions comprising a blend of two or more paper strengthening agents have improved stability compared with previously known paper strengthening agents. One component is a polymeric paper strengthening agent, preferably a wet strengthening agent. The other component is a stabilized glyoxalated p
Compositions comprising a blend of two or more paper strengthening agents have improved stability compared with previously known paper strengthening agents. One component is a polymeric paper strengthening agent, preferably a wet strengthening agent. The other component is a stabilized glyoxalated polyacrylamide prepared by (1) reacting a first portion of glyoxal with a polyacrylamide having pendant amide groups to form a first reaction mixture comprising glyoxalated polyacrylamide; (2) adding an acid to the first reaction mixture to form a second reaction mixture having a reduced pH and comprising the glyoxalated polyacrylamide; and (3) adding a second portion of glyoxal to the second reaction mixture to form the stabilized glyoxalated polyacrylamide. If desired, an aldehyde scavenger can be included in one or more of step (1), step (2), step (3), or the stabilized glyoxalated polyacrylamide. Such compositions can be used to enhance the strength of paper, particularly the wet strength of paper.
대표청구항▼
The invention claimed is: 1. A composition for enhancing the wet strength of paper comprising a blend of two components: (a) a polymeric paper strengthening agent; and (b) a stabilized glyoxalated polyacrylamide in a concentration of between about 40% and about 99% by weight of the two components,
The invention claimed is: 1. A composition for enhancing the wet strength of paper comprising a blend of two components: (a) a polymeric paper strengthening agent; and (b) a stabilized glyoxalated polyacrylamide in a concentration of between about 40% and about 99% by weight of the two components, wherein the stabilized glyoxalated polyacrylamide is prepared by (1) reacting a first portion of glyoxal with a polyacrylamide having pendant amide groups to form a first reaction mixture comprising glyoxalated polyacrylamide; (2) adding an acid to the first reaction mixture to form a second reaction mixture having a reduced pH and comprising the glyoxalated polyacrylamide; and (3) adding a second portion of glyoxal to the second reaction mixture to form the stabilized glyoxalated polyacrylamide. 2. The composition of claim 1 wherein the polyacrylamide is prepared by free radical polymerization of an acrylamide monomer in the presence of a cationic co-monomer to produce a cationic polyacrylamide polymer. 3. The composition of claim 2 wherein the cationic co-monomer is selected from diallyl dimethyl ammonium chloride, 2-vinylpyridine, 4-vinylpryridine, 2-methyl-5-vinylpyridine, 2-vinyl-N-methylpyridinium chloride, p-vinylphenyl-trimethyl ammonium chloride, 2-(dimethylamino) ethyl methacrylate, trimethyl(p-vinylbenzyl)ammonium chloride, p-dimethylaminoethylstyrene, dimethylaminopropyl acrylamide, 2-methylacroyloxyethyltrimethyl ammonium methylsulfate, 3-acrylamido-3-methylbutyl trimethyl ammonium chloride, 2-(dimethylamino) ethyl acrylate, and mixtures thereof. 4. The composition of claim 1 wherein the polyacrylamide is prepared in the presence of a di-functional monomer to obtain a branched structure. 5. The composition of claim 4 wherein the di-functional monomer is selected from the group consisting of N,N'-methylene-bisacrylamide, N,N'-methylene-bismethacrylamide, N-allyl acrylamide, N-allyl methacrylamide and mixtures thereof. 6. The composition of claim 1 wherein the first portion of glyoxal is provided in an amount of 10 to 60 mole percent of the pendant amide groups. 7. The composition of claim 6 wherein the second portion of glyoxal is from about 1 about 75 weight percent of the first portion of glyoxal. 8. The composition of claim 6 wherein the second portion of glyoxal is from about 4 to about 50 weight percent of the first portion of glyoxal. 9. The composition of claim 1 further comprising an aldehyde scavenger. 10. The composition of claim 1 wherein an aldehyde scavenger is included in one or more of step (1), step (2), step (3), and the stabilized glyoxalated polyacrylamide. 11. The composition of claim 9 or 10 wherein the aldehyde scavenger is selected from the group consisting of lactic acid, malic acid, citric acid, and choline chloride. 12. The composition of claim 9 or 10 wherein the aldehyde scavenger is used in an amount of 0.0001 to 0.25 mole per mole of total glyoxal. 13. The composition of claim 9 or 10 wherein the aldehyde scavenger has the structure: wherein: R1 is hydrogen or C1-C2 alkyl; R2 is hydrogen or C1-C4 alkyl; and A- is a compatible anion. 14. The composition of claim 13 wherein R1 and R2 are each hydrogen and A- is chloride. 15. The composition of claim 13 wherein the aldehyde scavenger is used in an amount of about 0.01 to about 0.3 moles per mole of glyoxal. 16. The composition of claim 13 wherein the aldehyde scavenger is used in an amount of about 0.1 to about 0.5 moles per mole of glyoxal. 17. The composition of claim 13 wherein the aldehyde scavenger is used in an amount of about 0.7 to about 1.5 moles per mole of glyoxal. 18. The composition of claim 13 wherein the polymeric paper strengthening agent is a polymeric wet strengthening agent. 19. The composition of claim 18 wherein the polymeric wet strengthening agent comprises a copolymer. 20. The composition of claim 18 wherein the polymeric wet strengthening agent comprises a homopolymer. 21. The composition of claim 18 wherein the polymeric wet strengthening agent comprises one or more of a cationic polymer, an anionic polymer, and a neutral polymer. 22. The composition of claim 21 wherein the polymeric wet strengthening agent comprises a cationic polymer and the cationic polymer is selected from the group consisting of poly(diallyl dimethyl ammonium chloride) (polyDADMAC), polyamidoamine (prepolymer), polyamidoamine-Epi (AMRES��), a DADMAC copolymer, a cationic styrene maleic anhydride (SMA), a cationic latex, and mixtures thereof. 23. The composition of claim 21 wherein the polymeric wet strengthening agent comprises an anionic polymer and the anionic polymer is selected from the group consisting of an acrylamide-acrylic acid copolymer, a styrene acrylic acid copolymer, a styrene maleic anhydride copolymer, a styrene-acrylic acid-hydroxyethyl acrylate copolymer, carboxymethylcellulose (CMC), an anionic latex, and mixtures thereof. 24. The composition of claim 21 wherein the polymeric wet strengthening agent comprises a neutral polymer and the neutral polymer is selected from the group consisting of polyvinyl alcohol, a starch, polyhydroxyethyl acrylate, and mixtures thereof. 25. A composition for enhancing the wet strength of paper comprising a blend of two components: (a) a polyamidoamine-Epi polymer; and (b) a stabilized glyoxalated polyacrylamide in a concentration of between about 40% and about 99% by weight of the two components, wherein the glyoxalated polyacrylamide is prepared by (1) reacting a first portion of glyoxal with a polyacrylamide having pendant amide groups to form a first reaction mixture comprising glyoxalated polyacrylamide; (2) adding an acid to the first reaction mixture to form a second reaction mixture having a reduced pH and comprising the glyoxalated polyacrylamide; and (3) adding a second portion of glyoxal to the second reaction mixture to form the stabilized glyoxalated polyacrylamide. 26. The composition of claim 25 wherein an aldehyde scavenger having the structure: is included in one or more of step (1), step (2), step (3), and the stabilized glyoxalated polyacrylamide. 27. The composition of claim 26 wherein R1 and R2 are each hydrogen and A- is chloride. 28. Paper strengthened with the composition of claim 25. 29. Paper strengthened with the composition of claim 1. 30. A method for imparting wet strength to paper comprising adding the composition of claim 1 to a pulp slurry from which the paper is formed. 31. A method for imparting wet strength to paper comprising adding the composition of claim 25 to a pulp slurry from which the paper is formed.
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이 특허에 인용된 특허 (31)
Floyd Don E. (Minneapolis MN) Potente Demetri (Minneapolis MN), Aminopolyamide-acrylamide-glyoxal resin.
Underwood Richard T. (Columbus GA) Jasion Robert J. (Columbus GA) Hoke Stephen P. (Columbus GA) Spence Gavin G. (Columbus GA), Method for imparting strength to paper.
Robert Rupaner BR; Martin Scholtissek DE; Karl-Heinz Schumacher DE; Maximilian Angel DE, Method for reducing the C1-C2-aldehyde content formed from compounds with -CH2-CHR-O-or-CH(OH)-groups.
Dauplaise David L. (Norwalk CT) Kozakiewicz Joseph J. (Trumbull CT) Schmitt Joseph M. (Ridgefield CT), Micro-emulsified glyoxalated acrylamide polymers.
Ballweber Edward G. (Glenwood IL) Jansma Roger H. (Park Forest IL) Phillips Kenneth G. (River Forest IL), Paper fiber additive containing polyacrylamide blended with glyoxal and polymeric diallyldimethyl ammonium chloride as a.
Cooper Anthony ; Underwood Richard T. ; Monteith Geoffrey ; Wright Michael, Process of after-treating dyed cellulose fabrics with a glyoxalated acrylamide polymer.
Dulany Margaret A. (Decatur GA) Garvey Chad E. (Ball Ground GA) Ringold Clay E. (Decatur GA) Srinivasan Ramji (Duluth GA), Repulpable wet strength resins for paper and paperboard.
Crisp Mark T.,NLX ; Riehle Richard J., Resins of amphoteric aldehyde polymers and use of said resins as temporary wet-strength or dry-strength resins for paper.
Hagiopol, Cornel; Townsend, David F.; Ringold, Clay E.; Johnston, James W.; McDonald, Robert; Simpson, Metric M.; Potter, Frederick S., Blends of polymers as wet strengthening agents for paper.
Hagiopol, Cornel; Townsend, David F.; Ringold, Clay E.; Johnston, James W.; McDonald, Robert; Simpson, Metric M.; Potter, Frederick S., Blends of polymers as wet strengthening agents for paper.
Castro, David J.; Lowe, Robert M.; Liu, Mei, Method of increasing paper bulk strength by using a diallylamine acrylamide copolymer in a size press formulation containing starch.
Benz, Bradley J.; Johnson, William C.; Liu, Mei; Wilson, Shawnee; Grimm, Mark; St. John, Michael R., Method of using aldehyde-functionalized polymers to increase papermachine performance and enhance sizing.
Hagiopol, Cornel; Townsend, David F.; Ringold, Clay E.; Johnston, James W.; McDonald, Robert; Simpson, Metric M.; Potter, Frederick S., Paper products containing a polymeric wet strengthening agent.
Cyr, Shane; Bakker, Henk; Stevels, Willem Marinus; Staib, Ronald Richard, Reactive cationic resins for use as dry and wet strength agents in sulfite ion-containing papermaking systems.
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