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51. 发明授权

US3959240A Catalytic process for the preparation of polyacrylonitrile and acrylonitrile copolymers 失效
标题翻译：用于制备聚丙烯腈和丙烯腈共聚物的催化方法
公开(公告)号：US3959240A
公开(公告)日：1976-05-25
申请号：US486722
申请日：1974-07-08
申请人： Luciano Console , Alessandro Zecchin , Antonio Quarta
发明人： Luciano Console , Alessandro Zecchin , Antonio Quarta
IPC分类号： C08F4/40 , C08F20/44 , C08F120/44 , C08F220/44
CPC分类号： C08F20/44
摘要： A process for polymerizing acrylonitrile monomer or copolymerizing a mixture of acrylonitrile monomer and further ethylenically unsaturated monomers copolymerizable therewith, which comprises contacting the monomer or mixture of monomers in an aqueous medium at a temperature not exceeding 55.degree.C with a catalytic system comprising a watersoluble persulphate, a hydroxylamine mono- or disulfonate and a water-soluble salt of a variable valence metal, such as a ferrous salt.
摘要翻译：一种使丙烯腈单体聚合或共聚丙烯腈单体和可与其共聚的其它烯属不饱和单体的混合物的方法，其包括使单体或单体混合物在水介质中在不超过55℃的温度下与包含水溶性过硫酸盐的催化体系，羟基胺单或二磺酸盐和可变价金属的水溶性盐如亚铁盐。

52. 发明授权

US3915941A Acrylonitrile polymerization using sodium sulfoxylate formaldehyde 失效
标题翻译：丙烯腈聚合使用甲醛次硫酸钠
公开(公告)号：US3915941A
公开(公告)日：1975-10-28
申请号：US44041974
申请日：1974-02-07
申请人： AMERICAN CYANAMID CO
发明人： CHAN DAVID YEE HING
IPC分类号： C08F20/44 , C08F220/42 , C08F120/42 , C08F120/70 , C08F220/70
CPC分类号： C08F20/44 , C08F2/16
摘要： Polymerization of acrylonitrile in aqueous system using watersoluble redox catalyst system comprising oxidizing catalyst and reducing bisulfite activator is improved by (a) conducting the polymerization in the presence of 0.1 to 0.5 parts of sodium sulfoxylate formaldehyde per 100 parts of monomer to inhibit cyanide by-product formation and/or (b) the use of sodium sulfoxylate formaldehyde to shortstop the polymerization reaction while minimizing the formation of undesirable water-soluble acrylonitrile-bisulfite addition product.
摘要翻译：通过（a）在每100份单体存在0.1至0.5份甲醛次硫酸钠的情况下进行聚合反应，从而通过使用包含氧化催化剂和还原性亚硫酸氢盐活化剂的水溶性氧化还原催化剂体系的丙烯腈在水系统中的聚合来抑制氰化物 - 产品形成和/或（b）使用甲醛次硫酸钠来阻止聚合反应，同时最小化不期望的水溶性丙烯腈 - 亚硫酸氢盐加成产物的形成。

53. 发明授权

US3873508A Preparation of acrylonitrile polymer 失效
标题翻译：制备丙烯腈聚合物
公开(公告)号：US3873508A
公开(公告)日：1975-03-25
申请号：US42880973
申请日：1973-12-27
申请人： DU PONT
发明人： TURNER JOHN J
IPC分类号： C08F2/00 , C08F2/02 , C08F2/10 , C08F20/44 , D01D5/11 , D01F6/18 , C08F3/76 , C08F15/02 , C08F15/22
CPC分类号： C08F20/44 , C08F2/04 , C08F2/16 , D01D5/11 , D01F6/18 , D01F6/38
摘要： Preparation of acrylonitrile polymers by polymerizing monomer in an aqueous medium at 120* to 215*C. produces a polymer-hydrate melt which separates at the bottom of a reactor. A continuous coupled process for polymerization and extrusion into fibers is disclosed.
摘要翻译：通过在120-220℃的水性介质中聚合单体制备丙烯腈聚合物，产生在反应器底部分离的聚合物 - 水合物熔体。公开了一种用于聚合和挤出成纤维的连续偶联方法。

54. 发明授权

US3821177A Acrylonitrile polymerization terminated with a shortstopping agent 失效
标题翻译：丙烯腈聚合终止与短程代理
公开(公告)号：US3821177A
公开(公告)日：1974-06-28
申请号：US29755172
申请日：1972-10-13
申请人： CHAN D
发明人： CHAN D
IPC分类号： C08F2/00 , C08F2/38 , C08F4/00 , C08F4/40 , C08F20/44 , C08F3/76 , C08F15/02 , C08F15/22
CPC分类号： C08F20/44 , C08F2/16
摘要： Polymerization of acrylonitrile in aqueous system using watersoluble redox catalyst system comprising oxidizing catalyst and reducing bisulfite activator is improved by (a) conducting the polymerization in the presence of 0.1 to 0.5 parts of sodium sulfoxylate formaldehyde per 100 parts of monomer to inhibit cyanide by-product formation and/or (b) the use of sodium sulfoxylate formaldehyde to shortstop the polymerization reaction while minimizing the formation of undesirable water-soluble acrylonitrile-bisulfite addition product.

55. 发明授权

US3687918A Acrylonitrile polymerization 失效
标题翻译：丙烯腈聚合
公开(公告)号：US3687918A
公开(公告)日：1972-08-29
申请号：US3687918D
申请日：1969-06-16
申请人： CELANESE CORP
发明人： CALUNDANN GORDON W
IPC分类号： C08F20/44 , C08F3/76 , C08F15/38
CPC分类号： C08F20/44 , Y10S260/28
摘要： A method of polymerizing acrylonitrile polymers at elevated temperatures and superatmospheric pressure conditions in a novel organic, preferably aqueous-organic, reaction medium in which the monomeric reactants and the polymerized acrylonitrile are soluble under the polymerization conditions. The polymerization conditions may correspond to or are conveniently changed to polymer shaping conditions utilizing the same solvent-reaction medium, thus eliminating polymer recovery, polymer washing, polymer dissolution and the like, process steps. The organic polymerization medium is a monomer and polymer solvating amount of acetonitrile, generally in an amount of 60 to 100 percent by weight of the solvent solution with the residual amount being preferably water. The process is particularly suitable for continuous reaction and polymer shaping wherein an effluent solution of polymer and organic or aqueous-organic reaction medium is continuously withdrawn from the reaction system, maintained under solubilizing conditions of heat and superatmospheric pressure, with suitable adjustment of solvent concentrations as desired to provide homogeneous polymer suitable for extrusion into a shaped article.
摘要翻译：在聚合条件下单体反应物和聚合丙烯腈可溶的新型有机，优选含水有机反应介质中，在高温和超大气压条件下聚合丙烯腈聚合物的方法。聚合条件可以对应于或者可以方便地改变为使用相同的溶剂 - 反应介质的聚合物成型条件，从而消除聚合物回收，聚合物洗涤，聚合物溶解等步骤。有机聚合介质是单体和聚合物溶剂化量的乙腈，通常为溶剂溶液的60至100重量％，残留量优选为水。该方法特别适用于连续反应和聚合物成型，其中将聚合物和有机或含水 - 有机反应介质的流出液连续地从反应体系中取出，保持在加热和超大气压力的溶解条件下，并适当地调节溶剂浓度如期望提供适于挤出成型制品的均匀聚合物。

56. 发明授权

US3679562A Lower temperature solid phase polymerization of acrylonitrile in the presence of an organic carbonyl compound 失效
标题翻译：有机碳化合物存在下丙烯腈的低温固相聚合
公开(公告)号：US3679562A
公开(公告)日：1972-07-25
申请号：US3679562D
申请日：1969-12-15
申请人： JAPAN ATOMIC ENERGY RES INST
发明人： TABATA YONEHO , OIZUMI CHIHIRO
IPC分类号： C08F20/44 , B01J1/00 , C08D1/00 , C08F1/16
CPC分类号： C08F20/44 , C08F2/36
摘要： THE PRESENT DISCLOSURE RELATES TO A PROCESS OF SOLID PHASE POLYMERIZATION OF ACRYLONITRILE BY MEANS OF AN IONIZING RADIATION BELOW THE MELTING POINT OF AN ACRYLONITRILE, CHARACTERIZED IN THAT AN ORGANIC CARBONYL COMPOUND OR COMPOUNDS ARE ADDED TO ACRYLONITRILE BEFORE THE POLYMERIZATION THEREOF. THE CARBONYL COMPOUND ADDED TO THE POLYMERIZATION SYSTEM SERVES TO CONTROL THE MOLECULAR WEIGHT OF POLYACRYLONITRILE AND IMPROVE OTHER PHYSICAL PROPERTIES OF THE POLYMER.

57. 发明授权

US3634378A Process for producing acrylonitrile polymer using a catalyst syste of a chlorate sulfur dioxide or sulfur dioxide liberating compound and a hypophosphite 失效
标题翻译：使用氯化二氧化硫或二氧化硫溶解化合物和氢氧化钠的催化剂体系生产丙烯腈聚合物的方法
公开(公告)号：US3634378A
公开(公告)日：1972-01-11
申请号：US3634378D
申请日：1969-07-28
申请人： CTA COMP IND TEXTILES
发明人： SCHORSCH GILBERT
IPC分类号： C08F20/44 , C08F3/76 , C08F15/22
CPC分类号： C08F20/44 , C08F2/16 , Y10S526/915
摘要： A PROCESS FOR PRODUCING ACRYLONITRILE POLYMERS TO PRODUCE A WHITE POLYMER HAVING EXCELLENT HEAT STABILITY, EXCELLENT MOLECULAR WEIGHT STABILITY, ETC. COMPRISING POLYMERIZING ACRYLONITRILE AT A TEMPERATURE OF FROM 30-70*C. AT A PH BETWEEN 1.8 AND 2.7 IN THE SIMULTANEOUS PRESENCE OF AN ALKALI OR ALALINE EARTH CHLORIDE, SULFUR DIOXIDE OR A COMPOUND CAPABLE OF LIBERATING SULFUR DIOXIDE IN THE POLYMERIZATION MEDIUM, AND AN ALKALI OR ALKALINE EARTH HYPOPHOSPHITE.

58. 发明授权

US3627741A Polymerization process for producing uniform acrylonitrile polymers using chlorate/sulfoxy redox initiators and amino polyacids or salts thereof 失效
标题翻译：使用氯化物/氧化还原反应物和氨基聚合物或其盐生产均匀的丙烯腈聚合物的聚合方法
公开(公告)号：US3627741A
公开(公告)日：1971-12-14
申请号：US3627741D
申请日：1967-08-22
申请人： MONSANTO CO
发明人： PATRON LUIGI , MONACO SERGIO LO
IPC分类号： C08F20/44 , C08F3/76 , C08F15/22
CPC分类号： C08F20/44 , C08F2/16
摘要： The use of additive compounds such as ethylenediamine tetracetic acid, diethylenetriaminepentaacetic acid and nitrilotriacetic acid and their water-soluble salts has been found to enhance the uniformity of the polymerization of vinyl monomers when initiated by a redox catalyst system comprising chlorate ions and reducing sulphoxy ions at pH below about 4.

59. 发明授权

US3468841A Compositions of carbon black and polyacrylonitrile and method for their preparation 失效
标题翻译：碳黑和聚丙烯腈的组合物及其制备方法
公开(公告)号：US3468841A
公开(公告)日：1969-09-23
申请号：US3468841D
申请日：1966-05-02
申请人： CRYLOR
发明人： CORBIERE PAUL JACQUES , ROSSET JEAN-BAPTISTE
IPC分类号： C08F2/44 , C08F20/44 , D01F1/04 , C08F1/84 , C08F27/00 , C08F45/08
CPC分类号： D01F1/04 , C08F2/16 , C08F2/36 , C08F2/44 , C08F20/44
摘要： The invention comprises threads and fibres consisting essentially of 65 to 90% by weight of an acrylonitrile polymer and 10 to 35% by weight of carbon black distributed throughout the polymer in the form of particles of diameter less than 0.5 m . The term "acrylonitrile polymer" is defined as acrylonitrile homopolymer or random or block copolymers, graft copolymers or mixtures of polymers containing at least 95% by weight of acrylonitrile units and up to 5% by weight of comonomer units. The threads and fibres are prepared by a process which comprises adsorbing acrylonitrile, with or without a monomer copolymerizable therewith, on carbon black, polymerizing the adsorbed material in aqueous solution, if necessary removing the product from excess water, then dissolving it in a solvent for the polymer formed, and then forming threads or fibres from the solution by a known method of spinning. In the example acrylonitrile is polymerized in the presence of aqueous sulphuric acid, sodium bisulphite and potassium chlorate.

60. 发明授权

US3432482A Process for the preparation of polymer 失效
标题翻译：制备聚合物的方法
公开(公告)号：US3432482A
公开(公告)日：1969-03-11
申请号：US3432482D
申请日：1965-05-27
申请人： ASAHI CHEMICAL IND
发明人： OHFUKA TOSHIO , SHIRODE KATSUMI , ICHIKAWA YASUSHI
IPC分类号： C08F4/00 , C08F20/44 , C08F1/62 , C08F1/11 , C08F3/76
CPC分类号： C08F4/00 , C08F2/16 , C08F20/44

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