Paper coating or binding formulations and methods of making and using same
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
D21H-019/10
D21H-019/44
D21H-019/58
D21H-021/30
C08K-005/42
C08L-003/02
C08L-009/06
출원번호
US-0048528
(2013-10-08)
등록번호
US-9074322
(2015-07-07)
발명자
/ 주소
Hayes, Peter C.
De Jong, Ralph Lewis
출원인 / 주소
BASF SE
대리인 / 주소
Meunier Carlin & Curfman LLC
인용정보
피인용 횟수 :
0인용 특허 :
86
초록▼
A paper coating or binding formulation comprises an aqueous polymer dispersion comprising a copolymer obtained by polymerization of an unsaturated monomer and a carbohydrate derived compound and a tetrasulfonate-based fluorescent whitening agent. The carbohydrate derived compound can be selected fro
A paper coating or binding formulation comprises an aqueous polymer dispersion comprising a copolymer obtained by polymerization of an unsaturated monomer and a carbohydrate derived compound and a tetrasulfonate-based fluorescent whitening agent. The carbohydrate derived compound can be selected from the group consisting of dextrins, maltodextrins, and mixtures thereof. Methods of preparing a paper coating or binding formulation and improving the whitening properties of paper are also provided. Furthermore, paper including a copolymer obtained by polymerization of an unsaturated monomer and a carbohydrate derived compound and a tetrasulfonate-based fluorescent whitening agent is also disclosed.
대표청구항▼
1. A paper coating or binding formulation, comprising: an aqueous polymer dispersion comprising a copolymer prepared by polymerizing monomers comprising 40% to 75% by weight of styrene, 25% to 60% by weight of butadiene, 1% to 10% by weight of itaconic and/or (meth)acrylic acid, 0% to 3% by weight o
1. A paper coating or binding formulation, comprising: an aqueous polymer dispersion comprising a copolymer prepared by polymerizing monomers comprising 40% to 75% by weight of styrene, 25% to 60% by weight of butadiene, 1% to 10% by weight of itaconic and/or (meth)acrylic acid, 0% to 3% by weight of (meth)acrylamide, and 0% to 20% by weight of (meth)acrylonitrile in the presence of greater than 0% to less than 50% by weight, based on the total monomer weight, of a carbohydrate-derived compound having a dextrose equivalent (DE) of about 10 to about 35; anda tetrasulfonate-based fluorescent whitening agent, wherein the carbohydrate-derived compound is selected from the group consisting of dextrins, maltodextrins, and mixtures thereof. 2. The formulation according to claim 1, wherein the DE of the carbohydrate-derived compound is from about 12.5 to about 25. 3. The formulation according to claim 1, wherein the DE of the carbohydrate-derived compound is from about 15 to about 20. 4. The formulation according to claim 1, wherein the weight average molecular weight of the carbohydrate-derived compound is from about 3,000 to about 20,000. 5. The formulation according to claim 1, wherein the weight average molecular weight of the carbohydrate-derived compound is from about 5,000 to about 17,000. 6. The formulation according to claim 1, wherein the carbohydrate-derived compound is soluble in water at room temperature in an amount of greater than about 40% by weight. 7. The formulation according to claim 1, wherein the copolymer is derived from about 5 to about 45 percent by weight of the carbohydrate-derived compound based on the total monomer weight. 8. The formulation according to claim 1, wherein the copolymer is derived from about 8 to about 40 percent by weight of the carbohydrate-derived compound based on the total monomer weight. 9. The formulation according to claim 1, wherein the aqueous polymer dispersion comprises a disperse phase and an aqueous phase and the carbohydrate-derived compound provided in the copolymer is present in the disperse phase. 10. The formulation according to claim 1, wherein said fluorescent whitening agent is not activated. 11. The formulation according to claim 1, wherein the formulation is substantially free of polyvinyl alcohol, carboxymethylcellulose, polyvinylpyrrolidone, and water-insoluble starches. 12. The formulation according to claim 1, wherein the aqueous polymer dispersion further comprises a hexasulfonate-based fluorescent whitening agent. 13. A method of preparing a paper coating or binding formulation, comprising: polymerizing a mixture of 40% to 75% by weight of styrene, 25% to 60% by weight of butadiene, 1% to 10% by weight of itaconic and/or (meth)acrylic acid, 0% to 3% by weight of (meth)acrylamide, and 0% to 20% by weight (meth)acrylonitrile, in the presence of about greater than 0% to less than 50% by weight of a carbohydrate-derived compound having a dextrose equivalent (DE) of about 10 to about 35, based on the total monomer weight, in an aqueous medium to produce a styrene-butadiene copolymer in an aqueous polymer dispersion, andmixing the aqueous polymer dispersion with a tetrasulfonate-based fluorescent whitening agent, wherein the carbohydrate-derived compound is selected from the group consisting of dextrins, maltodextrins, and mixtures thereof. 14. The method according to claim 13, wherein the DE of the carbohydrate-derived compound is from about 12.5 to about 25. 15. The method according to claim 13, wherein the weight average molecular weight of the carbohydrate-derived compound is from about 3,000 to about 20,000. 16. The method according to claim 13, wherein said polymerizing step comprising first mixing an aqueous solution of a carbohydrate-derived compound at room temperature comprising greater than about 40% by weight of the carbohydrate-derived compound with the styrene, butadiene, and itaconic and/or (meth)acrylic acid and polymerizing the mixture to form the copolymer. 17. The method according to claim 13, wherein the copolymer is derived from about 5 to about 45 percent by weight of the carbohydrate-derived compound based on the total monomer weight. 18. The method according to claim 13, wherein said fluorescent whitening agent is not activated. 19. The method according to claim 13, wherein the formulation is substantially free of polyvinyl alcohol, carboxymethylcellulose, polyvinylpyrrolidone, and water-insoluble starches. 20. A method of improving the whitening properties of paper; comprising: providing an aqueous polymer dispersion comprising a copolymer prepared by polymerizing 40% to 75% by weight of styrene, 25% to 60% by weight of butadiene, 1% to 10% by weight of itaconic and/or (meth)acrylic acid, 0% to 3% by weight of (meth)acrylamide, and 0% to 20% by weight of (meth)acrylonitrile, in the presence of greater than 0% to less than 50% by weight of a carbohydrate-derived compound having a dextrose equivalent (DE) of about 10 to about 35, based on the total monomer weight;mixing the aqueous polymer dispersion with a tetrasulfonate-based fluorescent whitening agent to produce a paper coating or binding formulation; andapplying the formulation as a coating to paper, wherein the carbohydrate-derived compound is selected from the group consisting of dextrins, maltodextrins, and mixtures thereof. 21. The method according to claim 20, wherein said providing step comprises polymerizing the styrene, butadiene, and itaconic and/or (meth)acrylic acid, and a carbohydrate-derived compound having a dextrose equivalent (DE) of about 10 to about 35, in an aqueous medium to produce the copolymer. 22. The method according to claim 20, wherein the DE of the carbohydrate-derived compound is from about 12.5 to about 25. 23. The method according to claim 20, wherein the weight average molecular weight of the carbohydrate-derived compound is from about 3000 to about 20,000. 24. The method according to claim 20, wherein the carbohydrate-derived compound is soluble in water at room temperature in an amount of greater than about 40% by weight. 25. The method according to claim 20, wherein the copolymer is derived from about 5 to about 45 percent by weight of the carbohydrate-derived compound based on the total monomer weight. 26. The method according to claim 20, wherein said fluorescent whitening agent is not activated. 27. The method according to claim 20, wherein the formulation is substantially free of polyvinyl alcohol, carboxymethylcellulose, polyvinylpyrrolidone, and water-insoluble starches. 28. Paper comprising a fiber matrix and a binder composition comprising a copolymer prepared by polymerizing 40% to 75% by weight of styrene, 25% to 60% by weight of butadiene, 1% to 10% by weight of itaconic and/or (meth)acrylic acid, 0% to 3% by weight of (meth)acrylamide, and 0% to 20% by weight of (meth)acrylonitrile, in the presence of greater than 0% to less than 50% by weight of a carbohydrate-derived compound having a dextrose equivalent (DE) of about 10 to about 35, based on the total monomer weight, and a tetrasulfonate-based fluorescent whitening agent, wherein the carbohydrate-derived compound is selected from the group consisting of dextrins, maltodextrins, and mixtures thereof. 29. Paper according to claim 28, wherein the DE of the carbohydrate-derived compound is from about 12.5 to about 25. 30. Paper according to claim 28, wherein the weight average molecular weight of the carbohydrate-derived compound is from about 3,000 to about 20,000. 31. Paper according to claim 28, wherein the carbohydrate-derived compound is soluble in water at room temperature in an amount of greater than about 40% by weight. 32. Paper according to claim 28, wherein the copolymer is derived from about 5 to about 45 percent by weight of the carbohydrate-derived compound based on dry polymer weight. 33. Paper according to claim 28, wherein the fluorescent whitening agent is not activated. 34. Paper according to claim 28, wherein the binder is substantially free of polyvinyl alcohol, carboxymethylcellulose, polyvinylpyrrolidone, and water-insoluble starches. 35. Paper according to claim 28, wherein the binder is provided as a coating layer on a paper substrate.
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