发明名称 |
Method for Reducing Negative Effects of Natural Pitch Contaminants in Both Pulping and Papermaking Operations |
摘要 |
The instant invention relates to a method for inhibiting pitch deposition on pulping and papermaking equipment or machinery comprising adding to a pulp slurry containing pitch an effective amount of polymer dispersion comprising a component A and a component B, wherein component A being a homopolymer and/or copolymer of acrylic acid and/or its alkyl esters, or methacrylic acid and/or its alkyl esters, styrene and/or methylstyrene, vinyl acetate, itaconic acid, glycidyl methacrylate, 2-hydroxyalkyl (meth)acrylate, methacrylamide, N-hydroxyethyl(meth)acrylamide, dimethacrylate monomers, 1,3-butylene glycol dimethacrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, propylene glycol dimethacrylate, dipropylene glycol dimethacrylate, 4-methyl-1,4-pentanediol dimethacrylate, divinylbenzene and/or trivinylbenzene, and component B being an aqueous solution of a styrene copolymer with acrylic acid, maleimide and/or maleic anhydride. |
申请公布号 |
US2015027652(A1) |
申请公布日期 |
2015.01.29 |
申请号 |
US201314384747 |
申请日期 |
2013.03.09 |
申请人 |
CLARIANT INTERNATIONAL LTD. |
发明人 |
Cowman John Stuart;Kohler Achim;Leone-Kammler Antonella |
分类号 |
D21H17/37 |
主分类号 |
D21H17/37 |
代理机构 |
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代理人 |
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主权项 |
1. A method for inhibiting pitch deposition on pulping and/or papermaking equipment and/or machinery comprising adding to a pulp slurry containing pitch,. an effective amount of polymer dispersion comprising a component A and a component B, wherein component A being a homopolymer and/or copolymer of acrylic acid and/or one or more alkyl esters thereof, or methacrylic acid and/or one or more alkyl esters thereof, styrene and/or methylstyrene, vinyl acetate, itaconic acid, glycidyl methacrylate, 2-hydroxyalkyl (meth)acrylate, methacrylamide, N-hydroxyethyl(meth)acrylamide, dimethacrylate monomers, 1,3-butylene glycol dimethacrylate, ethylene glycol dimethacrylate, diethylene glycol dimethacrylate, propylene glycol dimethacrylate, dipropylene glycol dimethacrylate, 4-methyl-1,4-pentanediol dimethacrylate, divinylbenzene and/or trivinylbenzene, and component B being an aqueous solution of a styrene copolymer with acrylic acid, maleimide and/or maleic anhydride. |
地址 |
Muttenz CH |