专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5780104A Method for preventing the inner wall surfaces of the polymerization apparatus from being fouled with scale during the polymerizatioin of vinyl chloride 失效
标题翻译：在氯乙烯的聚合反应中防止聚合装置的内壁表面被污垢堵塞的方法
公开(公告)号：US5780104A
公开(公告)日：1998-07-14
申请号：US768970
申请日：1996-12-18
申请人： Akihiko Takahashi , Sunao Maeda , Yuzo Ono , Masaaki Ozawa , Ichisaburo Nakamura
发明人： Akihiko Takahashi , Sunao Maeda , Yuzo Ono , Masaaki Ozawa , Ichisaburo Nakamura
IPC分类号： C08F2/00 , B05D7/22
CPC分类号： C08F2/004
摘要： A method for the homopolymerization or copolymerization of vinyl chloride, wherein the inner wall of the polymerizer and the like are prevented from being fouled with the resulting polymer by applying a coating fluid containing the oxidative polymerization product of a specific phenolic monomer to the surface of the inner wall of the polymerizer and the like, as well as an anti-fouling agent used for this purpose. The method of this invention can very effectively prevent the polymerizer and the like from being fouled with the resulting polymer without affecting the polymerization rate and various properties of the product. Consequently, the necessity of performing the operation for removal of the deposited polymer after completion of each polymerization cycle is eliminated, thus making it possible to achieve closed polymerization requiring no manhole opening after each polymerization cycle which is becoming increasingly popular in recent years.
摘要翻译：通过将含有特定酚类单体的氧化聚合产物的涂布液施加到所述聚合物的表面上，可以防止聚合反应器的内壁等被所得聚合物污染的氯乙烯的均聚或共聚方法聚合器等的内壁，以及用于该目的的防污剂。本发明的方法可以非常有效地防止聚合反应器等被所得聚合物污染，而不会影响产物的聚合速率和各种性能。因此，消除了在每个聚合循环完成后进行沉积的聚合物的除去操作的必要性，因此可以在近年来越来越受欢迎的每个聚合循环之后实现不需要人孔打开的闭合聚合。

2. 发明授权

US06174986B1 Polymerization of vinyl chloride 失效
标题翻译：氯乙烯的聚合
公开(公告)号：US06174986B1
公开(公告)日：2001-01-16
申请号：US08993245
申请日：1997-12-18
申请人： Ichisaburo Nakamura , Akihiko Takahashi , Masaaki Ozawa
发明人： Ichisaburo Nakamura , Akihiko Takahashi , Masaaki Ozawa
IPC分类号： C08G804
CPC分类号： C08G8/24 , C08F14/06 , C08G12/26 , C08G14/02
摘要： A process for polymerizing a vinyl chloride monomer wherein the vinyl chloride monomer is subjected to homopolymerization or (co)polymerization with a monomer copolymerizable with the vinyl chloride monomer in an aqueous solvent, comprising applying in advance a coating liquid containing a cocondensation product obtained by reacting either a phenothiazine derivative and an aldehyde or a phenothiazine derivative, a naphthol derivative and an aldehyde to give an initial condensation product and then reacting the initial product with a polyphenol, to an inner wall of a polymerization tank and parts of an apparatus in contact with the monomers during the polymerization process. The process makes it possible to apply the cocondensation product as an aqueous solution to, e.g., an inner wall of a polymerization tank; to quite effectively prevent polymer adhesion in, e.g., a polymerization tank, without affecting a polymerization rate or physical properties of the product; and thus to eliminate the need for removing adhered polymer after every polymerization process and to realize closed polymerization in which a manhole should not be opened for every polymerization process.
摘要翻译：一种聚合氯乙烯单体的方法，其中氯乙烯单体在与水性溶剂中可与氯乙烯单体共聚的单体进行均聚或（共）聚合），包括预先涂覆含有缩聚产物的涂布液，所述缩聚产物通过使吩噻嗪衍生物，醛或吩噻嗪衍生物，萘酚衍生物和醛，得到初始缩合产物，然后使初始产物与多酚反应到聚合槽的内壁和与聚合过程中的单体。该方法可以将缩合产物作为水溶液施加到例如聚合罐的内壁; 以非常有效地防止在例如聚合槽中的聚合物粘附而不影响产物的聚合速率或物理性能; 从而消除了在每个聚合过程之后去除粘附的聚合物的需要，并且实现了对于每个聚合过程不应打开人孔的闭合聚合。

3. 发明授权

US5789499A Polymerization process of vinyl chloride in the presence of oxygen 失效
标题翻译：在氧气存在下氯乙烯的聚合过程
公开(公告)号：US5789499A
公开(公告)日：1998-08-04
申请号：US777059
申请日：1996-12-30
申请人： Seiichi Masuko , Yoshihiro Umeda , Katsuhito Kohketsu , Ichisaburo Nakamura , Akihiko Takahashi
发明人： Seiichi Masuko , Yoshihiro Umeda , Katsuhito Kohketsu , Ichisaburo Nakamura , Akihiko Takahashi
IPC分类号： C08F114/06 , C08F2/00 , C08F2/18 , C08F14/06 , C08F291/00 , C08F2/20
CPC分类号： C08F14/06 , C08F2/004 , C08F2/005 , C08F291/00
摘要： A process is provided for the polymerization of vinyl chloride in a closed mode. According to the process, oxygen is caused to exist in a polymerizer, which is coated with an anti-fouling agent, during an operation in which the polymerization is repeated. The process according to this invention has made it possible to fully exhibit effects of the anti-fouling. This has in turn made it possible to achieve polymerization of vinyl chloride in the closed mode, leading to an improvement in productivity.
摘要翻译：提供了在闭合模式下聚合氯乙烯的方法。根据该方法，在重复聚合的操作中，使氧气存在于用防污剂涂布的聚合器中。根据本发明的方法使得可以充分发挥防污效果。这又使得可以在闭合模式下实现氯乙烯的聚合，从而提高生产率。

4. 发明授权

US5674954A Method of preventing scale adhesion to the surfaces of a polymerization tank and the like 失效
标题翻译：防止水垢附着在聚合槽等表面的方法
公开(公告)号：US5674954A
公开(公告)日：1997-10-07
申请号：US470474
申请日：1995-06-06
申请人： Seiichi Masuko , Ichisaburo Nakamura , Yoshimatsu Naka , Keiichi Fukuda , Akira Yamamoto , Yasuyuki Hatakeyama
发明人： Seiichi Masuko , Ichisaburo Nakamura , Yoshimatsu Naka , Keiichi Fukuda , Akira Yamamoto , Yasuyuki Hatakeyama
IPC分类号： C08F2/00 , C08F14/06 , C08F2/20
CPC分类号： C08F14/06 , C08F2/004
摘要： In a novel method of homo- or copolymerization of vinyl chloride, a specified coating agent is applied on the surfaces of the portions which will become into contact with the vinyl chloride monomer during the polymerization process. The coating agent is in a form of an aqueous solution of a modified condensation product of phenol and aldehyde, the pH of the solution being adjusted in a range that the product is dissolved at an ambient temperature upon coating of the solution and separates out of the solution upon being heated on the surfaces. The wall surface of the polymerization tank and the like is then coated with a thin film of the coating agent having a uniform thickness and being strongly adhered to the wall surface, thereby providing an excellent effect of preventing adhesion of the product polymer to the wall surface.
摘要翻译：在氯乙烯均聚或共聚的新方法中，在聚合过程中将在与氯乙烯单体接触的部分的表面上施加特定的涂布剂。涂层剂是苯酚和醛的改性缩合产物的水溶液形式，溶液的pH值在产物在环境温度下溶解的范围内被调节，并在分离出在表面上加热时的溶液。然后将聚合槽等的壁面用均匀厚度的涂布剂的薄膜涂布并牢固地附着在壁面上，从而提供优异的防止产品聚合物粘合到壁面上的效果。

5. 发明授权

US5674953A Method of preventing scale adhesion to surfaces of polymerization tank with phenol-aldehyde coating 失效
标题翻译：用酚醛涂料防止聚合槽表面附着垢的方法
公开(公告)号：US5674953A
公开(公告)日：1997-10-07
申请号：US466522
申请日：1995-06-06
申请人： Seiichi Masuko , Ichisaburo Nakamura , Keiichi Fukuda , Yasuyuki Hatakeyama , Akihiro Yamaguchi , Keizaburo Yamaguchi
发明人： Seiichi Masuko , Ichisaburo Nakamura , Keiichi Fukuda , Yasuyuki Hatakeyama , Akihiro Yamaguchi , Keizaburo Yamaguchi
IPC分类号： C08F2/00 , C08F14/06 , C08F2/20 , C08F2/02
CPC分类号： C08F14/06 , C08F2/004
摘要： In a novel method of homo- or copolymerization of vinyl chloride, a specified coating agent is applied on the surfaces of the portions which will become into contact with the vinyl chloride monomer during the polymerization process. The coating agent is in a form of an aqueous solution of a modified condensation product of phenol and aldehyde, the pH of the solution being adjusted in a range that the product is dissolved at an ambient temperature upon coating of the solution and separates out of the solution upon being heated on the surfaces. The wall surface of the polymerization tank and the like is then coated with a thin film of the coating agent having a uniform thickness and being strongly adhered to the wall surface, thereby providing an excellent effect of preventing adhesion of the product polymer to the wall surface.
摘要翻译：在氯乙烯均聚或共聚的新方法中，在聚合过程中将在与氯乙烯单体接触的部分的表面上施加特定的涂布剂。涂层剂是苯酚和醛的改性缩合产物的水溶液形式，溶液的pH值在产物在环境温度下溶解的范围内被调节，并在分离出在表面上加热时的溶液。然后将聚合槽等的壁面用均匀厚度的涂布剂的薄膜涂布并牢固地附着在壁面上，从而提供优异的防止产品聚合物粘合到壁面上的效果。

6. 发明授权

US06291600B1 Method of preventing scale adhesion to the surfaces of a polymerization tank 失效
标题翻译：防止水垢附着在聚合槽表面的方法
公开(公告)号：US06291600B1
公开(公告)日：2001-09-18
申请号：US08053974
申请日：1993-04-09
申请人： Seiichi Masuko , Ichisaburo Nakamura , Yoshimatsu Naka , Keiichi Fukuda , Akira Yamamoto , Yasuyuki Hatakeyama , Akihiro Yamaguchi , Keizaburo Yamaguchi
发明人： Seiichi Masuko , Ichisaburo Nakamura , Yoshimatsu Naka , Keiichi Fukuda , Akira Yamamoto , Yasuyuki Hatakeyama , Akihiro Yamaguchi , Keizaburo Yamaguchi
IPC分类号： C08F200
CPC分类号： C08F14/06 , C08F2/004
摘要： In a novel method of homo- or copolymerization of vinyl chloride, a specified coating agent is applied on the surfaces of the portions which will become into contact with the vinyl chloride monomer during the polymerization process. The coating agent is in a form of an aqueous solution of a modified condensation product of phenol and aldehyde, the pH of the solution being adjusted in a range that the product is dissolved at an ambient temperature upon coating of the solution and separates out of the solution upon being heated on the surfaces. The wall surface of the polymerization tank and the like is then coated with a thin film of the coating agent having a uniform thickness and being strongly adhered to the wall surface, thereby providing an excellent effect of preventing adhesion of the product polymer to the wall surface.
摘要翻译：在氯乙烯均聚或共聚的新方法中，在聚合过程中将在与氯乙烯单体接触的部分的表面上施加特定的涂布剂。涂层剂是苯酚和醛的改性缩合产物的水溶液形式，溶液的pH值在产物在环境温度下溶解的范围内被调节，并在分离出在表面上加热时的溶液。然后将聚合槽等的壁面用均匀厚度的涂布剂的薄膜涂布并牢固地附着在壁面上，从而提供优异的防止产品聚合物粘合到壁面上的效果。

7. 发明授权

US5728780A Method of preventing scale adhesion to the surfaces of a polymerization tank and the like 失效
标题翻译：防止水垢附着在聚合槽等表面的方法
公开(公告)号：US5728780A
公开(公告)日：1998-03-17
申请号：US470472
申请日：1995-06-06
申请人： Seiichi Masuko , Ichisaburo Nakamura , Yasuyuki Hatakeyama
发明人： Seiichi Masuko , Ichisaburo Nakamura , Yasuyuki Hatakeyama
IPC分类号： C08F2/00 , C08F14/06 , C08F2/18 , C08F2/02
CPC分类号： C08F14/06 , C08F2/004
摘要： In a novel method of homo- or copolymerization of vinyl chloride, a specified coating agent is applied on the surfaces of the portions which will become into contact with the vinyl chloride monomer during the polymerization process. The coating agent is in a form of an aqueous solution of a modified condensation product of phenol and aldehyde, the pH of the solution being adjusted in a range that the product is dissolved at an ambient temperature upon coating of the solution and separates out of the solution upon being heated on the surfaces. The wall surface of the polymerization tank and the like is then coated with a thin film of the coating agent having a uniform thickness and being strongly adhered to the wall surface, thereby providing an excellent effect of preventing adhesion of the product polymer to the wall surface.
摘要翻译：在氯乙烯均聚或共聚的新方法中，在聚合过程中将在与氯乙烯单体接触的部分的表面上施加特定的涂布剂。涂层剂是苯酚和醛的改性缩合产物的水溶液形式，溶液的pH值在产物在环境温度下溶解的范围内被调节，并在分离出在表面上加热时的溶液。然后将聚合槽等的壁面用均匀厚度的涂布剂的薄膜涂布并牢固地附着在壁面上，从而提供优异的防止产品聚合物粘合到壁面上的效果。

8. 发明授权

US5147948A Method for polymerizing vinyl chloride while inhibiting adhesion to the polymerization reactor with coating from poly(hydricphenol sulfide) 失效
标题翻译：在聚合物（硫化氢）下，将聚氯乙烯聚合成聚合反应剂的方法，
公开(公告)号：US5147948A
公开(公告)日：1992-09-15
申请号：US631932
申请日：1990-12-21
申请人： Seiichi Masuko , Ichisaburo Nakamura , Keiichi Fukuda , Yasuyuki Hatakeyama , Akihiro Yamaguchi , Keizaburo Yamaguchi
发明人： Seiichi Masuko , Ichisaburo Nakamura , Keiichi Fukuda , Yasuyuki Hatakeyama , Akihiro Yamaguchi , Keizaburo Yamaguchi
IPC分类号： C08F14/06 , C08F2/00 , C08F2/20 , C08F14/00 , C09D181/02
CPC分类号： C08F2/004
摘要： A method for polymerizing vinyl chloride comprises polymerizing vinyl chloride in an aqueous medium or bulk-polymerizing vinyl chloride, wherein the inner wall of a polymerizer and parts of devices which come in contact with the monomer during the polymerization are coated, prior to the polymerization, with a reaction product having a molecular weight ranging from 500 to 100,000, obtained by condensing a polyhydric phenol and sulfur dichloride in the presence of a Lewis acid as a catalyst. The amount of the polymer adhered to the polymerizer during polymerization of vinyl chloride is substantially lowered and the adhered polymer can be easily washed away through simple water washing according to the foregoing method. Moreover, the method does not adversely affect the reaction time and the quality of the resulting product at all.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式