N-sulfohydrocarbon-substituted acrylamide polymers as formation aids for non-woven stock |
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| 申请号 | US3772142D | 申请日 | 1971-03-23 | 公开(公告)号 | US3772142A | 公开(公告)日 | 1973-11-13 |
| 申请人 | LUBRIZOL CORP; | 发明人 | DOGGETT R; TSCHIRCH R; | ||||
| 摘要 | Polymers of N-sulfohydrocarbon-substituted acrylamides, especially the alkali metal salts of 2-acrylamido-2methylpropanesulfonic acid, are useful as fiber dispersants in the preparation of paper and similar stock. | ||||||
| 权利要求 | 2. A slurry according to claim 1 wherein the fibers are adapted for the formation of non-woven stock therefrom. 3. A slurry according to claim 2 wherein R1 is hydrogen or methyl. 4. A slurry according to claim 3 wherein the water-soluble polymer is a homopolymer of an alkali metal 2-acrylamido-2-methylpropanesulfonate, or a copolymer thereof with acrylic acid. 5. A slurry according to claim 4 wherein the water-soluble polymer is a homopolymer. 6. In a method for producing non-woven stock which comprises forming a sheet from an aqueous slurry of a plurality of fibers, the improvement which comprises adding to said slurry, as a dispersant for said fibers, about 0.1-10 percent by weight, based on the weight of said fibers, of at least one water-soluble polymer containing at least five percent by weight of units of the formula 7. A method according to claim 6 wherein R1 is hydrogen or methyl. 8. A method according to claim 7 wherein the water-soluble polymer is a homopolymer of an alkali metal 2-acrylamido-2-methylpropanesulfonAte, or a copolymer thereof with acrylic acid. 9. A method according to claim 8 wherein the water-soluble polymer is a homopolymer. |
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