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2. 发明公开

EP0442508A1 A process for making graft copolymers from lignin and vinyl monomers 失效
标题翻译： Verfahren zur Herstellung von Pfropfcopolymerisaten aus Lignin und Vinylmonomeren。
公开(公告)号：EP0442508A1
公开(公告)日：1991-08-21
申请号：EP91102118.6
申请日：1991-02-14
申请人： Meister, John J.
发明人： Meister, John J.
IPC分类号： C08H5/02 , C08F289/00
CPC分类号： C09K8/588 , C08F289/00
摘要： The invention provides a series of methods for synthesizing a lignin graft copolymer or modifying the surface of a wood fiber or pulp and to provide a spectrum of reagents to use in the processes for preparing the lignin graft copolymer, grafted wood, grafted wood fiber, or grafted pulp and to provide a method of boosting or enhancing polymer molecular weights during polymerization reactions.
In accordance with the present invention, to the lignin macromolecule, possibly to the aromatic ring of the oxyphenylpropene moiety, is grafted 1) repeating units of 1-(pendant group)ethylene:

2) a combination of randomly occurring repeating units of 1-(pendant group)ethylene with 1-(alternate pendant group)ethylene:

3) a combination of randomly occurring repeating units of 1-methyl-1-(pendant group)ethylene with 1-(alternate pendant group)ethylene:

or 4) a combination of randomly occurring repeating units of 1-methyl-1-(pendant group)ethylene with 1-methyl-1-(alternate pendant group)ethylene:

In these formulas, m and n are integers varying from 1 to 300,000. R₁ and R₂ are organic functional groups which do not interfere with free radical polymerization, and the structures presented represent typical polymer or random-sequence, copolymer sidechains attached to lignin by the process of this invention.
摘要翻译：本发明提供一系列用于合成木质素接枝共聚物或改性木纤维或纸浆表面的方法，并提供一系列试剂用于制备木质素接枝共聚物，接枝木材，接枝木纤维或并且提供在聚合反应期间增强或增强聚合物分子量的方法。根据本发明，对于可能与氧基苯基丙烯部分的芳环的木质素大分子接枝1）1-（侧基）亚乙基的重复单元： 2）随机存在的重复单元的组合 1-（侧基）乙烯与1-（交替侧基）乙烯： 3）1-甲基-1-（侧基）乙烯和1-（交替侧基）乙烯的无规重复重复单元的组合或者4）1-甲基-1-（侧基）乙烯与1-甲基-1-（交替侧基）乙烯的无规重复重复单元的组合：在这些式中，m和n 是从1到300,000的整数。 R1和R2是不干扰自由基聚合的有机官能团，并且所呈现的结构表示通过本发明的方法连接到木质素上的典型的聚合物或随机序列的共聚物侧链。

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