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1.发明授权Separation of solids from aqueous suspensions using modified amine functional polymers 失效使用改性胺官能聚合物从固体悬浮液中分离固体
公开(公告)号：US5185083A
公开(公告)日：1993-02-09
申请号：US803256
申请日：1991-12-05
CPC分类号： G21F9/10 , C02F1/54 , C08F8/12 , C08F8/48 , C08F2800/10
摘要： Polyvinylaminals, optionally as the formed copolymer with polyvinylhemiaminals and polyvinylacetals are useful as separating agents and are provided by reacting a poly(vinylamine) or a copolymer containing vinyl alcohol and vinylamine units with a monoaldehyde. The aldehyde, such as butyraldehyde, can be introduced into the polymer aminalization as a liquid or gas, generally in a proportion of about 0.02 to 0.5 mol per mol of alcohol and amine units in the polymer chain. These polymers, especially as the cationic salt, perform very well in the flocculation, settling, clarification and dewatering of wastewater.
摘要翻译： 聚乙烯基胺，任选地作为与聚乙烯基缩聚物和聚乙烯醇缩甲醛形成的共聚物可用作分离剂，并且通过使聚（乙烯基胺）或含有乙烯醇和乙烯胺单元的共聚物与单醛反应来提供。 醛，如丁醛，可以作为液体或气体引入聚合物中间化，通常在聚合物链中每摩尔醇和胺单元约0.02至0.5摩尔的比例。 这些聚合物，特别是作为阳离子盐，在废水的絮凝，沉降，澄清和脱水方面表现非常好。
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公开(公告)号：US5324787A
公开(公告)日：1994-06-28
申请号：US977973
申请日：1992-11-18
IPC分类号： C08F8/00 , C08F26/00 , C08F126/02 , C08F226/02
CPC分类号： C08F8/00
摘要： Poly(vinylamine) homopolymers and copolymers are hydrophobically modified by reaction of amine units present in the polymer with a saturated aliphatic or aromatic glycidyl ether compound. The resulting polymers are useful as flocculants in separating water from suspended solids and are especially effective in improving fines retention in papermaking. Poly(vinylamine hydrochloride) modified in this manner with butyl glycidyl ether is shown to be very efficient in retaining the paper product fines present in recycle paper pulps.
摘要翻译： 通过聚合物中存在的胺单元与饱和脂族或芳族缩水甘油醚化合物的反应，聚（乙烯基胺）均聚物和共聚物被疏水改性。 所得聚合物可用作从悬浮固体中分离水中的絮凝剂，并且特别有效地改善造纸中的细粉保留。 以这种方式用丁基缩水甘油醚改性的聚（乙烯胺盐酸盐）显示出非常有效地保留存在于回收纸浆中的纸制品细粉。
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3.发明授权
公开(公告)号：US5281307A
公开(公告)日：1994-01-25
申请号：US3760
申请日：1993-01-13
IPC分类号： D21H17/34 , D21H17/06 , D21H17/15 , D21H17/36 , D21H17/47 , D21H17/49 , D21H17/52 , D21H21/18 , D21H23/76 , D21H17/33
摘要： An improved papermaking process has been developed to enhance the properties of the resultant paper or paper-type products. The process involves adding a polyvinyl alcohol/vinylamine copolymer along with a crosslinking agent at the dry end step of a conventional papermaking process. Improvements in the properties of the resultant paper products are observed, especially at low levels of copolymer addition.
摘要翻译： 一种改进的造纸工艺已被开发，以提高所得的纸或纸产品类型的性能。 该方法涉及与常规造纸过程的干燥结束步骤交联剂沿添加聚乙烯醇/乙烯胺共聚物。 在所得纸产品的性能改进中观察到，尤其是在共聚物加入低水平。
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公开(公告)号：US5232553A
公开(公告)日：1993-08-03
申请号：US826330
申请日：1992-01-24
摘要： Polyvinylaminals, optionally as the formed copolymer with polyvinyl hemiaminals, and polyvinyl acetals are added to a papermaking pulp slurry to improve the retention of fines in the final paper product. This polymer is provided by reacting a poly(vinylamine) which can be a homopolymer or a copolymer containing vinyl alcohol and vinyl amine units with a monoaldehyde. The aldehyde, such as butyraldehyde, modifies the structure of the polymer and increases its hydrophobicity. The use of these polymers in papermaking involving the recycle of waste papers provides notable advantages in fines retention because of the high level of fines which normally accompany such recycle paper waste.
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