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1.发明授权
公开(公告)号：US4794166A
公开(公告)日：1988-12-27
申请号：US77803
申请日：1987-07-27
IPC分类号： C08F6/00
CPC分类号： C08F6/003 , Y10S524/916
摘要： A polymer hydrogel substantially free from monomers and oligomers is prepared by contacting a previously prepared polymer hydrogel with a single-phase mixture of water and a solvent and then separating the mixture of water and solvent from the hydrogel.
摘要翻译： 通过将预先制备的聚合物水凝胶与水和溶剂的单相混合物接触，然后将水和溶剂的混合物与水凝胶分离，制备基本上不含单体和低聚物的聚合物水凝胶。
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公开(公告)号：US4985152A
公开(公告)日：1991-01-15
申请号：US380086
申请日：1989-07-14
申请人： Josef Hilbig , Guenther Welt , Manfred Ziegelmayer
发明人： Josef Hilbig , Guenther Welt , Manfred Ziegelmayer
CPC分类号： C08B11/20 , B01D11/023 , B01D33/04 , B01D2201/085
摘要： The present invention relates to a process and a device for selectively separating the solvents employed in the preparation and purification of products. In this connection the different solvents are removed from the product to be treated by means of mechanical separation and subsequent admission of steam, and are collected separately. As a result of this, mixing of solvents from the preparation and from the purification is avoided, so that the working up of a solvent mixture is superfluous. The proces and the device are preferably used in the process for producing starch ethers and cellulose ethers.
摘要翻译： 本发明涉及用于选择性分离用于制备和纯化产物的溶剂的方法和装置。 在这方面，通过机械分离和随后的蒸汽入口将不同的溶剂从待处理的产品中除去，并分开收集。 因此，避免了制剂和纯化中的溶剂的混合，使得溶剂混合物的加工是多余的。 方法和装置优选用于生产淀粉醚和纤维素醚的方法中。
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3.发明授权Apparatus for continuously producing water-soluble hydroxyalkyl cellulose and related ethers 失效用于连续生产水溶性羟烷基纤维素及相关醚的装置
公开(公告)号：US4363784A
公开(公告)日：1982-12-14
申请号：US257552
申请日：1981-04-27
申请人： Josef Hilbig , Arno Holst , Hans Kunkler , Klaus Stolting , Wolfgang Schminke
发明人： Josef Hilbig , Arno Holst , Hans Kunkler , Klaus Stolting , Wolfgang Schminke
摘要： Apparatus for continuously producing water-soluble hydroxyalkyl cellulose and related ethers comprising, in combination, the following elements connected in series: a stirred kettle for alkalizing cellulose at atmospheric pressure, at least one stirred autoclave for partially etherifying the alkalized cellulose, individual homogenizing pumps at the outlet of the stirred kettle and at the outlet of each stirred autoclave, individual bypass lines leading from the bottom of the stirred kettle to the upper end thereof and from the bottom of each stirred autoclave to the upper end of the same autoclave for circulating slurry from each vessel in a loop, a tubular reactor comprising a plurality of serially-connected, horizontal tubes for completing the etherification of the cellulose slurry, the first tube of the tubular reactor being provided with a non-conveying, homogenizing agitator, and each subsequent tube being provided with a conveying agitator such as an impeller, means such as a jacket for each section of the tubular reactor for adjusting the temperature of a slurry in the tubular reactor, and cooling tube for cooling etherified slurry withdrawn from the tubular reactor.
摘要翻译： 用于连续生产水溶性羟烷基纤维素和相关醚的装置，其组合包括串联连接的以下元件：用于在大气压下碱化纤维素的搅拌釜，至少一个用于部分醚化碱化纤维素的搅拌釜，各个均化泵 搅拌釜的出口和每个搅拌的高压釜的出口处，从搅拌釜的底部到其上端以及从每个搅拌的高压釜的底部到达相同高压釜的上端的单独的旁路管道用于循环浆料 一个管道反应器，包括多个串联连接的水平管，用于完成纤维素浆料的醚化，管状反应器的第一管设置有非输送均质搅拌器，每个后续的 管设置有诸如叶轮的输送搅拌器，诸如jac的装置 用于调节管式反应器中的浆料的温度的管状反应器的每个部分以及从管式反应器中排出的用于冷却醚化浆料的冷却管。
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4.发明授权Preparing cellulose ethers in a dimethoxyethane/(dispersing auxiliary) medium 失效在二甲氧基乙烷/（分散助剂）介质中制备纤维素醚
公开(公告)号：US4501887A
公开(公告)日：1985-02-26
申请号：US581233
申请日：1984-02-17
CPC分类号： C08B11/00
摘要： In modern processes for the preparation of cellulose ethers containing one or more types of substituents (such as MC, CMC, HEC, HPC, MHEC or EHEC), cellulose is reacted with etherifying agents in the presence of water, base and a mixture of preferably inert organic solvents (as a dispersing auxiliary). Dimethoxyethane (ethylene glycol dimethyl ether) and at least one organic solvent selected from the group including alkanols, alkane diols and alkoxy alkanols (for example, methanol and/or isopropanol) are employed in the mixture of organic solvents used for these syntheses, particularly in quantities of 1 to 30 parts by weight per 1 part by weight of cellulose.
摘要翻译： 在制备含有一种或多种取代基（例如MC，CMC，HEC，HPC，MHEC或EHEC）的纤维素醚的现代方法中，纤维素与醚化剂在水，碱和优选的混合物的存在下与醚化剂反应 惰性有机溶剂（作为分散助剂）。 在用于这些合成的有机溶剂的混合物中使用二甲氧基乙烷（乙二醇二甲醚）和选自烷醇，烷二醇和烷氧基链烷醇（例如甲醇和/或异丙醇）的至少一种有机溶剂，特别是在 相对于1重量份的纤维素，其含量为1〜30重量份。
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公开(公告)号：US5708162A
公开(公告)日：1998-01-13
申请号：US416185
申请日：1995-04-04
申请人： Josef Hilbig , Reinhard Doenges
发明人： Josef Hilbig , Reinhard Doenges
CPC分类号： C08B37/0087 , C08B11/20 , C08B31/08
摘要： Process for the preparation of low molecular weight polysaccharide ethers which can be employed in binders for improving adhesive power and film-forming properties, by oxidative degradation of relatively high molecular weight polysaccharide ethers, which comprises initially introducing a relatively high molecular weight polysaccharide ether in suspension (e.g. in a slurry), adding a perborate or a mixture of perborate and perborate activator, and carrying out the oxidative degradation at a temperature of between 25.degree. and 90.degree. C.
摘要翻译： 用于制备低分子量多糖醚的方法，其可用于粘合剂中以通过相对高分子量多糖醚的氧化降解来改善粘合力和成膜性能，其包括首先将相对高分子量的多糖醚引入悬浮液 （例如在浆料中），加入过硼酸盐或过硼酸盐和过硼酸盐活化剂的混合物，并在25℃至90℃的温度下进行氧化降解。
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6.发明授权Continuous process for producing water-soluble hydroxyalkyl cellulose and related ethers 失效生产水溶性羟烷基纤维素及相关醚的连续工艺
公开(公告)号：US4310663A
公开(公告)日：1982-01-12
申请号：US156404
申请日：1980-06-04
申请人： Josef Hilbig , Arno Holst , Hans Kunkler , Klaus Stolting , Wolfgang Schminke
发明人： Josef Hilbig , Arno Holst , Hans Kunkler , Klaus Stolting , Wolfgang Schminke
IPC分类号： C08B11/193 , C08B11/08 , C08B17/06 , C08G59/68
摘要： A continuous process for manufacturing water-soluble hydroxyalkyl cellulose, and water-soluble mixed ethers based on hydroxyalkyl cellulose, comprising producing a slurry comprising (by weight) 1 part cellulose, 0.02 to 0.6 parts alkali metal hydroxide, 5 to 10 parts inert organic solvent, and 0.4 to 2.5 parts water; continuously feeding the slurry to a first elevated pressure reactor and mixing the slurry therein with at least one normally gaseous etherifying agent which has been liquified under pressure; maintaining the slurry at a temperature up to 40.degree. C., and a gauge pressure up to 3 bars, for 15 to 90 minutes, to give a degree of substitution from 0.2 to 1.0; continuously circulating the slurry in the first reactor in a loop through a homogenizing device to form a homogenized slurry; continuously feeding the homogenized slurry through a tubular reactor having a conveying device, an inlet, and first and second parts, and reacting the homogenized slurry in the tubular reactor for 70 to 180 minutes at a temperature from 30.degree. to 120.degree. C., under a gauge pressure of up to 10 bars, continuously transferring the reacted slurry into a cooling device; and subsequently purifying the etherified compounds; and apparatus for performing the process utilizing pressurized etherifying reactors and a heated tubular reactor.
摘要翻译： 制备水溶性羟烷基纤维素的连续方法和基于羟烷基纤维素的水溶性混合醚，包括制备包含（重量）1份纤维素，0.02-0.6份碱金属氢氧化物，5至10份惰性有机溶剂 ，和0.4〜2.5份水; 将浆料连续地供给到第一高压反应器中，并将其中的浆料与至少一种在压力下液化的常规气态醚化剂混合; 将浆料保持在高达40℃的温度和表压至3巴，持续15至90分钟，得到0.2至1.0的取代度; 使第一反应器中的淤浆循环通过均质装置循环以形成匀浆浆料; 通过具有输送装置，入口和第一和第二部分的管式反应器连续地供给均质浆料，并使管状反应器中的均质浆料在30℃至120℃的温度下反应70至180分钟， 表压高达10巴，将反应的浆料连续转移到冷却装置中; 随后纯化醚化的化合物; 以及使用加压醚化反应器和加热的管式反应器进行该方法的装置。
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