IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0324478
(2002-12-20)
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발명자
/ 주소 |
- Soerens, Dave Allen
- Laumer, Jason Matthew
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출원인 / 주소 |
- Kimberly-Clark Worldwide, Inc.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
16 인용 특허 :
49 |
초록
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A method of making an absorbent binder composition includes combining a first aqueous monomer solution including a reducing polymerization initiator with a second aqueous monomer solution including an oxidizing polymerization initiator to form a binder composition having post application, moisture-i
A method of making an absorbent binder composition includes combining a first aqueous monomer solution including a reducing polymerization initiator with a second aqueous monomer solution including an oxidizing polymerization initiator to form a binder composition having post application, moisture-induced crosslinking capability. The first aqueous monomer solution includes a monoethylenically unsaturated monomer and an ethylenically unsaturated monomer that contains an alkoxysilane functionality. The second aqueous monomer solution includes a monoethylenically unsaturated monomer. The monoethylenically unsaturated monomer included in the first and second aqueous monomer solutions may be carboxylic, sulphonic, or phosphoric acids or salts or a combination thereof. The ethylenically unsaturated monomer may be an acrylate or methacrylate. Crosslinking of the resulting binder composition is induced by removal of water. The polymerization of the monomer solutions to form an absorbent binder composition may be carried out in about 100 minutes or less.
대표청구항
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1. A method of making an absorbent binder composition comprising:forming a first aqueous monomer solution including a monoethylenically unsaturated monomer selected from the group consisting of carboxylic acid salts, sulphonic acid salts, phosphoric acid salts, and combinations thereof; an ethylenic
1. A method of making an absorbent binder composition comprising:forming a first aqueous monomer solution including a monoethylenically unsaturated monomer selected from the group consisting of carboxylic acid salts, sulphonic acid salts, phosphoric acid salts, and combinations thereof; an ethylenically unsaturated monomer including an acrylate or a methacrylate that contains an alkoxysilane functionality; and a reducing polymerization initiator; forming a second aqueous monomer solution including a monoethylenically unsaturated monomer selected from the group consisting of carboxylic acid salts, sulphonic acid salts, phosphoric acid salts, and combinations thereof; and an oxidizing polymerization initiator; combining the first aqueous monomer solution with the second aqueous monomer solution wherein the reducing polymerization initiator reacts with the oxidizing polymerization initiator to form a binder composition; and inducing crosslinking of the binder composition by removal of water. 2. The method of claim 1, wherein the binder composition is formed in about 100 minutes or less.3. The method of claim 1, wherein the binder composition is formed in about 30 minutes or less.4. The method of claim 1, wherein the binder composition is formed in about 15 minutes or less.5. The method of claim 1, wherein the binder composition is formed in about 10 minutes or less.6. The method of claim 1, further comprising applying the binder composition to a substrate prior to inducing crosslinking of the binder composition by the removal of water.7. The method of claim 1, further comprising adjusting the first aqueous monomer solution to have a pH of about 6.5 to about 7.8. The method of claim 1, further comprising adjusting the second aqueous monomer solution to have a pH of about 6.5 to about 7.9. The method of claim 1, wherein the reducing polymerization initiator is selected from the group consisting of ascorbic acid, alkali metal sulfites, alkali metal bisulfites, ammonium sulfite, ammonium bisulfite, alkali metal hydrogen sulfite, ferrous metal salts such as ferrous sulfates, sugars, aldehydes, primary and secondary alcohols, and combinations thereof.10. The method of claim 1, wherein the oxidizing polymerization initiator is selected from the group consisting of hydrogen peroxide, alkali metal persulfates, ammonium persulfate, alkylhydroperoxides, peresters, diacryl peroxides, silver salts, and combinations thereof.11. A method of making an absorbent binder composition comprising:forming a first aqueous monomer solution including a monoethylenically unsaturated monomer selected from the group consisting of carboxylic acids, sulphonic acids, phosphoric acids, and combinations thereof; an ethylenically unsaturated monomer including an acrylate or a methacrylate that contains an alkoxysilane functionality; and a reducing polymerization initiator; forming a second aqueous monomer solution including a monoethylenically unsaturated monomer selected from the group consisting of carboxylic acids, sulphonic acids, phosphoric acids, and combinations thereof; and an oxidizing polymerization initiator; combining the first aqueous monomer solution with the second aqueous monomer solution wherein the reducing polymerization initiator reacts with the oxidizing polymerization initiator to form a binder composition; and inducing crosslinking of the binder composition by removal of water. 12. The method of claim 11, wherein the binder composition is formed in about 100 minutes or less.13. The method of claim 11, wherein the first aqueous monomer solution comprises a basic material in an amount effective to at least partially neutralize the monoethylenically unsaturated monomer.14. The method of claim 11, wherein the second aqueous monomer solution comprises a basic material in an amount effective to at least partially neutralize the monoethylenically unsaturated monomer.15. The method of claim 11, further comprising adding a surfactant to the first aqueous monomer solution to disperse the ethylenically unsaturated monomer.16. The method of claim 11, further comprising adding a surfactant to the second aqueous monomer solution.17. The method of claim 11, further comprising applying the binder composition to a substrate prior to inducing crosslinking of the binder composition by the removal of water.18. A method for making an absorbent binder composition comprising:forming a first aqueous monomer solution including a monoethylenically unsaturated monomer selected from the group consisting of carboxylic acids, sulphonic acids, phosphoric acids, and combinations thereof; and an ethylenically unsaturated monomer including an acrylate or a methacrylate that contains an alkoxysilane functionality; adding an amount of a basic material to the first aqueous monomer solution effective to neutralize the monoethylenically unsaturated monomer; adjusting the first aqueous monomer solution to have a pH of about 6.5 to about 7.0; adding a reducing polymerization initiator including ascorbic acid to the first aqueous monomer solution; forming a second aqueous monomer solution including a monoethylenically unsaturated monomer selected from the group consisting of carboxylic acids, sulphonic acids, phosphoric acids, and combinations thereof; adding an amount of a basic material to the second aqueous monomer solution effective to neutralize the monoethylenically unsaturated monomer; adjusting the second aqueous monomer solution to have a pH of about 6.5 to about 7.0; adding an oxidizing polymerization initiator including hydrogen peroxide to the second aqueous monomer solution; combining the first aqueous monomer solution with the second aqueous monomer solution wherein the reducing polymerization initiator reacts with the oxidizing polymerization initiator to form a binder composition in about 60 minute or less; applying the binder composition to a substrate; and inducing crosslinking of the binder composition by removal of water. 19. The method of claim 18, wherein the binder composition is formed in about 30 minutes or less.20. The method of claim 18, wherein the first aqueous monomer solution comprises acrylic acid and 3-(trimethoxysilyl)propyl methacrylate.21. The method of claim 18, wherein the second aqueous monomer solution comprises acrylic acid.22. An absorbent binder composition prepared by the method of claim 1.23. The absorbent binder composition of claim 22, wherein the absorbent binder composition has a glass transition temperature of about 30 degrees Celsius or lower.24. The absorbent binder composition of claim 22, wherein the absorbent binder composition has a Centrifugal Retention Capacity of about 80 percent or greater of its dry weight of 0.9% saline.25. An absorbent binder composition prepared by the method of claim 11.26. The absorbent binder composition of claim 25, wherein the absorbent binder composition has a glass transition temperature of about 30 degrees Celsius or lower.27. The absorbent binder composition of claim 25, wherein the absorbent binder composition has a Centrifugal Retention Capacity of about 80 percent or greater of its dry weight of 0.9% saline.28. An absorbent binder composition prepared by the method of claim 18.29. The absorbent binder composition of claim 28, wherein the absorbent binder composition has a glass transition temperature of about 30 degrees Celsius or lower.30. The absorbent binder composition of claim 28, wherein the absorbent binder composition has a Centrifugal Retention Capacity of about 80 percent or greater of its dry weight of 0.9% saline.
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