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1. 发明授权

US5861471A Polysulphone/polyether block copolycondensates 失效
标题翻译：聚砜/聚醚嵌段共缩聚物
公开(公告)号：US5861471A
公开(公告)日：1999-01-19
申请号：US632659
申请日：1996-04-15
申请人： Heinz Pudleiner , Ralf Dujardin , Rolf Wehrmann , Knud Reuter , Helmut-Martin Meier
发明人： Heinz Pudleiner , Ralf Dujardin , Rolf Wehrmann , Knud Reuter , Helmut-Martin Meier
IPC分类号： B01D71/52 , B01D71/68 , C08G2/30 , C08G2/34 , C08G65/00 , C08G65/32 , C08G65/42 , C08G75/00 , C08G75/02 , C08G75/23 , C08G8/02 , A61M29/00
CPC分类号： C08G75/23 , C08L81/06 , C08L2205/05 , C08L71/02
摘要： The invention relates to polysulphone/polyether block copolycondensates having the recurring structural unit as in formula (I)--(--O--E--O--Ar.sup.1 --SO.sub.2 --Ar.sup.2 --)--W-- (I)whereinE is a divalent diphenolate radical andW is a polyether, polythioether or polyacetal possessing at least two hydroxyl groups and having an average molecular weight (M.sub.n) of from 400 to 30,000 andwherein the proportion of the radical W in the total polymer amounts to 5 to 99 wt. %,the preparation and use thereof for the production of moulded shapes, for example, membranes or catheter tubes.
摘要翻译：本发明涉及具有如式（I） - （ - OEO-Ar1-SO2-Ar2 - ） - W-（I）的重复结构单元的聚砜/聚醚嵌段共缩合物，其中E是二价二酚盐基，W是聚醚具有至少两个羟基并具有400至30,000的平均分子量（+ E，ovs M + EE n）的聚硫醚或聚缩醛，并且其中基团W在总聚合物中的比例为5至99重量％％，其制备和用于生产模塑形状的用途，例如膜或导管。

2. 发明授权

US3161616A Polyoxymethylene diethers 失效
标题翻译：聚甲醛二醚
公开(公告)号：US3161616A
公开(公告)日：1964-12-15
申请号：US68232557
申请日：1957-09-06
申请人： DU PONT
发明人： NORTHROP BROWN , LANGSDORF JR WILLIAM PHILIP , EARLE SCHWEITZER CARL
IPC分类号： C08G2/00 , C08G2/34 , H04B17/40
CPC分类号： C08G2/08 , C08G2/12 , C08G2/14 , C08G2/16 , C08G2/32 , C08G2/34 , H04B17/40 , H04B17/404 , Y10S74/10

3. 发明授权

US09090842B2 Method for refining polyoxymethylene dialkyl ethers by catalytic hydrogenation using a slurry bed 有权
标题翻译：通过使用浆料床的催化氢化来精制聚甲醛二烷基醚的方法
公开(公告)号：US09090842B2
公开(公告)日：2015-07-28
申请号：US14257215
申请日：2014-04-21
申请人： Dongfang Hongsheng New Energy Application Technology Research Institute Co., Ltd
发明人： Zhengpeng Hong , Hongyan Shang , Xiaoting Feng
IPC分类号： C10L1/02 , C08L59/02 , C08G2/28 , C08G2/34 , C07C29/141 , C07C41/56
CPC分类号： C10L1/02 , C07C29/141 , C07C41/56 , C08G2/28 , C08G2/34 , C08L59/02 , C07C43/303 , C07C31/04
摘要： The present invention relates to a method for refining polyoxymethylene dialkyl ethers by catalytic hydrogenation using a slurry bed, wherein, using a slurry bed reactor for refining by hydrogenation, an equilibrium system containing polyoxymethylene dialkyl ethers products is refined by catalytic hydrogenation, so as to remove formaldehyde contained therein. The refining method by hydrogenation described in the present invention can remarkably increase the separation and purification efficiency of polyoxymethylene dialkyl ethers, and the polyoxymethylene dialkyl ethers obtained after subsequent rectification have a purity greater than 99.5%, a product yield greater than 97% and an atom utilization ratio close to 100%.
摘要翻译：本发明涉及一种通过使用淤浆床的催化氢化来精制聚甲醛二烷基醚的方法，其中使用浆床反应器通过氢化进行精制，含有聚甲醛二烷基醚产物的平衡体系通过催化氢化来精制，以除去其中含有甲醛。通过本发明描述的氢化精炼方法可以显着提高聚甲醛二烷基醚的分离和提纯效率，随后精馏后得到的聚甲醛二烷基醚的纯度大于99.5％，产物收率大于97％，原子利用率接近100％。

4. 发明授权

US4268643A Process for improving the stability of acetal polymers 失效
标题翻译：改进缩醛聚合物稳定性的方法
公开(公告)号：US4268643A
公开(公告)日：1981-05-19
申请号：US088250
申请日：1979-10-25
申请人： Pierino Radici , Sergio Custro , Paolo Colombo
发明人： Pierino Radici , Sergio Custro , Paolo Colombo
IPC分类号： C08G2/32 , C08G2/34 , C08G6/00
CPC分类号： C08G2/34 , C08G2/32
摘要： The terminal hydroxyl groups of an acetal polymer are esterified or etherified by reaction with an end-capping agent chosen from anhydrides of carboxylic acids, orthoesters and orthocarbonates, by forming an intimate mixture of polymer in powder form and liquid end-capping agent, the amount of said agent in the mixture being less than that which results in loss of the free-flowing characteristics of the powder, and reacting said mixture under stirring at 50.degree.-170.degree. C.
摘要翻译：通过与选自羧酸，原酸酯和原碳酸酯的酸酐的封端剂反应，通过形成粉末形式的聚合物和液体封端剂的紧密混合物，缩醛聚合物的末端羟基被酯化或醚化，所述混合物中的所述试剂的摩尔比小于粉末的自由流动特性的损失，并且在搅拌下使所述混合物在50-170℃下反应。

5. 发明授权

US3998791A Process for the stabilization of polyacetal reins 失效
标题翻译：聚合物纤维素稳定化的方法
公开(公告)号：US3998791A
公开(公告)日：1976-12-21
申请号：US605949
申请日：1975-08-19
申请人： Pierino Radici , Sergio Custro , Paolo Colombo
发明人： Pierino Radici , Sergio Custro , Paolo Colombo
IPC分类号： C08G2/34 , C08G2/32
CPC分类号： C08G2/34
摘要： Process for the stabilization of polyacetal resins having terminal hydroxyl groups, which comprises reacting a reagent capable of etherifying the hydroxyl groups with the polyacetal resins suspended in a reaction medium that is liquid under the conditions used, the said reaction medium consisting of at least one substance that is a solvent for the polymer and at least one substance that is a non-solvent for the polymer, the said solvent and non-solvent substances being completely miscible at the reaction temperatures but immiscible or partly miscible at temperature substantially lower than the reaction temperatures, and carrying out the operation in the presence of catalytic quantities of one or more compounds selected from the groups consisting ofA. strong or medium-strong mineral acids whose acid dissociation constant or first acid dissociation constant is higher than 10.sup..sup.-7 ;B. strong or medium-strong oganic acids whose acid dissociation constant is higher than 10.sup..sup.-6 ;C. alkyl, cycloalkyl, or alkylaromatic esters of strong or medium-strong mineral acids;D. alkyl, cycloalkyl or alkylaromatic esters of strong or medium-strong organic acids.

6. 发明授权

US4260730A Preparation of bisphenol-formaldehyde ethers using nitric acid 失效
标题翻译：用硝酸制备双酚甲醛
公开(公告)号：US4260730A
公开(公告)日：1981-04-07
申请号：US109215
申请日：1980-01-03
申请人： Kazys Sekmakas , Thomas H. Plaisance
发明人： Kazys Sekmakas , Thomas H. Plaisance
IPC分类号： C08G8/08 , C08G2/34
CPC分类号： C08G8/08
摘要： A bisphenol is reacted with formaldehyde in solution in alcohol in the presence of an alkali metal hydroxide, preferably at a pH of from 7-10, to provide a polymethylol derivative. Nitric acid is then added to precipitate the hydroxide and an excess is preferably used to provide an acid pH, preferably pH 1-3, and the acidic mixture is heat reacted to remove water of etherification. The nitric acid catalyst is then precipitated with alkali metal hydroxide to enable easy removal of both acid and alkali as an insoluble salt.
摘要翻译：在碱金属氢氧化物的存在下，优选在7-10的pH下，双酚在甲醇溶液中与醇反应，得到多羟甲基衍生物。然后加入硝酸以沉淀氢氧化物，优选使用过量以提供酸性pH，优选pH为1-3，并将酸性混合物热反应以除去醚化的水。然后用碱金属氢氧化物沉淀硝酸催化剂，使得能够容易地除去作为不溶性盐的酸和碱。

7. 发明授权

US3393179A Preparation of polyoxymethylene ethers 失效
标题翻译：聚甲醛醚的制备
公开(公告)号：US3393179A
公开(公告)日：1968-07-16
申请号：US52807966
申请日：1966-02-17
申请人： DU PONT
发明人： FREDRICK LEVERETT GLENN
IPC分类号： C08G2/34
CPC分类号： C08G2/34

8. 发明授权

US3000861A Polymerization of aqueous formaldehyde to produce high molecular weight polyoxymethylene 失效
标题翻译：聚合甲醛水溶液生产高分子量聚甲醛
公开(公告)号：US3000861A
公开(公告)日：1961-09-19
申请号：US70033957
申请日：1957-12-03
申请人： DU PONT
发明人： NORTHROP BROWN , LIGHT FUNCK DENNIS , EARLE SCHWEITZER CARL
IPC分类号： C08G2/00 , C08G2/34 , H04B17/40
CPC分类号： C08G2/08 , C08G2/12 , C08G2/14 , C08G2/16 , C08G2/32 , C08G2/34 , H04B17/40 , H04B17/404 , Y10S74/10

9. 发明授权

US09725551B2 Aromatic hydrocarbon formaldehyde resin, modified aromatic hydrocarbon formaldehyde resin and epoxy resin, and method for producing these 有权
公开(公告)号：US09725551B2
公开(公告)日：2017-08-08
申请号：US14896487
申请日：2014-06-16
申请人： MITSUBISHI GAS CHEMICAL COMPANY, INC.
发明人： Go Higashihara , Atsushi Okoshi
IPC分类号： C08G4/00 , C08G2/26 , C08G2/34 , C08G10/04 , C08G14/12 , C08L63/00
CPC分类号： C08G4/00 , C08G2/26 , C08G2/34 , C08G10/04 , C08G14/12 , C08L63/00
摘要： There is provided an aromatic hydrocarbon formaldehyde resin obtained by reacting an aromatic hydrocarbon compound (A) represented by the following formula (1) with formaldehyde (B) in the presence of an acidic catalyst. wherein R represents an organic group having 1 to 10 carbon atoms; l represents an integer of 0 to 2, and m and n represent integers satisfying 1≦m+n≦10, m≧0 and n≧1.

10. 发明授权

US4310653A Production of monomeric etherified bisphenol-formaldehyde condensates 失效
标题翻译：单体醚化双酚 - 甲醛缩合物的生产
公开(公告)号：US4310653A
公开(公告)日：1982-01-12
申请号：US195110
申请日：1980-10-08
申请人： John J. Krajewski , Edward J. Murphy
发明人： John J. Krajewski , Edward J. Murphy
IPC分类号： C08G8/36 , C09D161/14 , C08G2/34 , C08G8/20
CPC分类号： C09D161/14 , C08G8/36 , Y10S524/901
摘要： A method of producing essentially monomeric etherified formaldehyde condensates with a bisphenol having a plurality of formaldehyde-reactive sites is disclosed in which the bisphenol is reacted with at least about 2 moles of formaldehyde per mole of bisphenol in solution in etherifying alcohol in the presence of an insoluble strong acid cation exchange resin. The reaction is carried out at a reaction temperature of from about 30.degree. C. to about 100.degree. C. to simultaneously provide the desired methylolation and etherification without introducing soluble ionic contaminants.
摘要翻译：公开了一种用具有多个甲醛反应性位点的双酚生产基本上单体醚化的甲醛缩合物的方法，其中在醚化醇存在下，双酚与溶剂中每摩尔双酚的至少约2摩尔甲醛反应不溶性强酸阳离子交换树脂。反应在约30℃至约100℃的反应温度下进行，以同时提供所需的羟甲基化和醚化，而不引入可溶性离子污染物。

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