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1.发明授权Process for preparing water-soluble acrylic polymers by irradiating aqueous monomer solutions containing a surfactant 失效通过照射含有表面活性剂的单体水溶液制备水溶性丙烯酸聚合物的方法
公开(公告)号：US4612336A
公开(公告)日：1986-09-16
申请号：US704414
申请日：1985-02-22
申请人： Akira Yada , Shusaku Matsumoto , Yoshihiro Kawamori , Takao Saito , Tadashi Nishiyama , Yoshitugu Adachi
发明人： Akira Yada , Shusaku Matsumoto , Yoshihiro Kawamori , Takao Saito , Tadashi Nishiyama , Yoshitugu Adachi
IPC分类号： C08F2/10 , C08F2/48 , C08F2/50 , C08F220/56
CPC分类号： C08F2/48
摘要： A process for preparing particulate water-soluble acrylic polymers, e.g. acrylamide or methacrylamide polymers and cationic acrylic polymers, having a high molecular weight, an excellent water solubility and a uniform particle size with a good productivity, which comprises:(a) adding at least one surfactant selected from the group consisting of a non-ionic surfactant and an anionic surfactant to an at least 20% by weight aqueous solution of a vinyl monomer in an amount of 0.001 to 1% by weight based on the monomer.(b) adjusting the dissolved oxygen in the aqueous monomer solution to at most 1 mg/liter,(c) admixing the aqueous monomer solution with at most 0.03% by weight of a photopolymerization initiator based on the monomer,(d) continuously feeding the aqueous monomer solution in the form of a layer having a thickness of 3 to 10 mm onto a moving support located in an atmosphere containing at most 1% by volume of oxygen,(e) irradiating the layer of the aqueous monomer solution on the moving support with ultraviolet rays having a wavelength of 300 to 450 millimicrons at an intensity of at most 50 W/m.sup.2,(f) continuously taking out the produced polymer in the form of a sheet having a thickness of 3 to 10 mm from the moving support,(g) breaking the polymer sheet to cubic pieces of 3 to 10 mm in length of a side by a roller type cutter,(h) pulverizing the cubic pieces to particles having a diameter of 0.3 to 3 mm by a vertical type cutter, and(i) drying the particles with hot air.
摘要翻译： 一种制备颗粒状水溶性丙烯酸聚合物的方法，例如 丙烯酰胺或甲基丙烯酰胺聚合物和阳离子丙烯酸类聚合物，其具有高分子量，优异的水溶性和均匀的粒度，具有良好的生产率，其包括：（a）加入至少一种选自非离子 表面活性剂和阴离子表面活性剂，以相对于单体为0.001〜1重量％的量的乙烯基单体的至少20重量％的水溶液。 （b）将单体水溶液中的溶解氧调节至至多1mg /升，（c）将单体水溶液与基于单体的至少0.03重量％的光聚合引发剂混合，（d）连续进料 水性单体溶液，其形式为具有3至10mm厚度的层，形成在含有至多1体积％氧气的气氛中的移动支持体上，（e）将单体水溶液层照射在移动支撑体上 紫外线的强度为50W / m 2以下的波长为300〜450毫微子的紫外线，（f）从移动的载体上连续取出厚度为3〜10mm的片状的聚合物， （g）通过辊式切割机将聚合物片破碎成侧面长度为3〜10mm的立方体片，（h）通过立式切割机将立方体片粉碎成直径为0.3〜3mm的粒子， （i）用热空气干燥颗粒。
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公开(公告)号：US4762862A
公开(公告)日：1988-08-09
申请号：US021647
申请日：1987-03-04
CPC分类号： C08F20/34 , C08F2/48 , Y10S522/903
摘要： A process for preparing particulate water-soluble cationic acrylic polymers having a high molecular weight, an excellent water solubility and a uniform particle size with a good productivity by adding a combined photoinitiator system of an azoguanyl compound and other usual photoinitiator to an aqueous monomer solution containing a cationic vinyl monomer, irradiating the aqueous monomer solution in the form of a thin layer on a moving support with ultraviolet rays in at least two stages, and finely dividing the produced aqueous polymer gel in a wet state by a roller cutter and then by a vertical cutter.
摘要翻译： 一种制备具有高分子量，优异的水溶性和均匀粒度的颗粒状水溶性阳离子丙烯酸类聚合物的方法，通过将偶氮芳基化合物和其它通常的光引发剂的组合光引发剂体系加入到含有 阳离子乙烯基单体，在至少两个阶段用紫外线照射移动的载体上的薄层形式的单体水溶液，并通过辊式切割机将所制备的湿态聚合物凝胶细分，然后通过 立式切割机
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公开(公告)号：US4690788A
公开(公告)日：1987-09-01
申请号：US795263
申请日：1985-11-05
申请人： Akira Yada , Shusaku Matsumoto , Yoshihiro Kawamori , Takao Saito , Tadashi Nishiyama , Yoshitugu Adachi
发明人： Akira Yada , Shusaku Matsumoto , Yoshihiro Kawamori , Takao Saito , Tadashi Nishiyama , Yoshitugu Adachi
CPC分类号： B29B13/065 , B29B13/10 , B29B9/04 , Y10S524/916
摘要： A novel process for preparing particles of polymer gel prepared by polymerizing an aqueous solution of water-soluble vinyl monomers which comprises breaking the polymer gel into particles with a breaker device wherein the gel is cut into strips by a pair of rollers having a plurality of annular projections or grooves on their surfaces, the rollers rotating in an opposite direction to each other to engage each other and cut off the gel fed between the rollers, and the strips are then cut into particles by a combination of a fixed cutting blade and a rotating cutting blade. The obtained gel particles are further pulverized into fine round or particles spherical in a vertical type cutter comprising at least one vertically fixed cutting blade and a rotary cutting blade arranged rotatably and vertically, a clearance being provided between an edge of the rotary cutting blade and an edge of the fixed blade.
摘要翻译： 一种用于制备聚合物凝胶颗粒的新方法，其通过聚合水溶性乙烯基单体的水溶液制备，该方法包括用聚合物凝胶将其破碎成具有破碎装置的颗粒，其中通过一对辊将该凝胶切成条带，该辊具有多个环状 在其表面上的突起或凹槽，辊彼此相反的方向旋转以彼此接合并切断在辊之间供给的凝胶，然后通过固定切割刀片和旋转的组合将条切割成颗粒 切割刀片。 将获得的凝胶颗粒进一步粉碎成垂直型切割机中的圆形或微球状，其包括至少一个垂直固定的切割刀片和可旋转和垂直设置的旋转切割刀片，在旋转切割刀片的边缘和 固定刀片的边缘。
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公开(公告)号：US4604411A
公开(公告)日：1986-08-05
申请号：US689004
申请日：1985-01-04
申请人： Akira Yada , Shusaku Matsumoto , Yoshihiro Kawamori , Takao Saito , Tadashi Nishiyama , Yoshitugu Adachi
发明人： Akira Yada , Shusaku Matsumoto , Yoshihiro Kawamori , Takao Saito , Tadashi Nishiyama , Yoshitugu Adachi
CPC分类号： C08F2/002 , C08F2/10 , Y10S526/92
摘要： An improved process for preparing a sticky water-soluble polymer, e.g. acrylamide polymers and acrylic acid polymers, which comprises polymerizing an aqueous solution of a monomer in a polymerization vessel of which the surface contacting the aqueous monomer solution is covered with a tetrafluoroethylene-ethylene copolymer film, whereby the stickiness of the produced polymer to the vessel is remarkably decreased, namely the peelability of the polymer from the vessel is remarkably improved, and moreover the polymerization conversion is remarkably improved. Also, the use of a metal deposited tetrafluoroethylene-ethylene copolymer film as a covering material improves the efficiency of a photopolymerization and enables to use a polymerization vessel made of an inexpensive material.
摘要翻译： 制备粘性水溶性聚合物的改进方法，例如 丙烯酰胺聚合物和丙烯酸聚合物，其包括在聚合容器中聚合单体的水溶液，其中与单体水溶液接触的表面被四氟乙烯 - 乙烯共聚物膜覆盖，由此所产生的聚合物对容器的粘性为 显着降低，即聚合物从容器的剥离性显着提高，此外聚合转化率显着提高。 此外，使用金属沉积的四氟乙烯 - 乙烯共聚物膜作为覆盖材料提高了光聚合的效率，并且能够使用由廉价材料制成的聚合容器。
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公开(公告)号：US5783628A
公开(公告)日：1998-07-21
申请号：US612434
申请日：1996-03-07
CPC分类号： B01F17/0028 , C08F8/00 , C08F8/44
摘要： A modified polyvinyl alcohol is disclosed, which comprises the following structural units (I) and (II) and has a weight average molecular weight of from 3,000 to 400,000: ##STR1## wherein R.sup.1 represents H or CH.sub.3 ; and M.sup.1 represents H, an alkali metal, ammonium, alkylammonium, or alkanolammonium. The modified polyvinyl alcohol may be sulfonated. The modified polyvinyl alcohol is used as a dispersant such as a drilling fluid additive.
摘要翻译： 公开了一种改性的聚乙烯醇，其包含以下结构单元（I）和（II），其重均分子量为3,000至400,000：（I）其中R 1表示H或 CH3; M1表示H，碱金属，铵，烷基铵或烷醇铵。 改性的聚乙烯醇可以被磺化。 改性聚乙烯醇用作分散剂如钻井液添加剂。
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公开(公告)号：US4647598A
公开(公告)日：1987-03-03
申请号：US689006
申请日：1985-01-04
申请人： Akira Yada , Shusaku Matsumoto , Yoshihiro Kawamori , Takao Saito , Tadashi Nishiyama , Yoshitugu Adachi
发明人： Akira Yada , Shusaku Matsumoto , Yoshihiro Kawamori , Takao Saito , Tadashi Nishiyama , Yoshitugu Adachi
CPC分类号： C08F2/10 , Y10S522/902 , Y10S522/91
摘要： An improved process for preparing a water-soluble polymer having an excellent water solubility and a high molecular weight, which comprises subjecting a thin layer of an aqueous solution of a water-soluble vinyl monomer to polymerization on a solid support, covering the thin layer with a substantially water-insoluble organic material, e.g. a paraffin, a silicone oil or a low molecular polyethylene, and/or a slightly water-soluble or substantially water-insoluble alkylene oxide adduct at least at a point of time when the aqueous monomer solution has not freely flowed, and further continuing the polymerization.
摘要翻译： 一种制备具有优异的水溶性和高分子量的水溶性聚合物的改进方法，其包括使水溶性乙烯基单体的水溶液薄层在固体载体上聚合，用 基本上不溶于水的有机材料，例如 至少在单体水溶液不能自由流动的时间点，和/或略微水溶性或基本上不溶于水的烯化氧加合物，进一步继续聚合 。
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