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公开(公告)号：US5458839A
公开(公告)日：1995-10-17
申请号：US51903
申请日：1993-04-27
IPC分类号： B29C47/00 , B29C47/14 , B29C49/00 , B29D7/01 , B29K59/00 , B29L7/00 , B29L22/00 , B29L31/06 , C08G2/10 , C08G2/18 , C08J5/00 , C08J5/18
CPC分类号： C08J5/18 , B29C49/0005 , B29D7/01 , C08G2/10 , C08G2/18 , B29K2059/00 , C08J2359/02
摘要： A process for efficiently producing a hollow molding or a sheet- or rod-shaped molding includes subjecting a composition containing a polyoxymethylene copolymer resin having substantially a linear molecular structure and a melt flow index (MI) value (190.degree. C., 2160 g load) of 0.1 to 2.0 g/10 min to blow -molding or extrusion-molding operations. The preferred polyoxymethylene copolymer is prepared by copolymerizing trioxane as the principle monomer with a cyclic ether or cyclic formal comonomer in the presence of 1.times.10.sup.-3 to 1.times.10.sup.-2 molar % of a boron trifluoride catalyst or a coordination compound thereof, while regulating the chain-terminating or chain-transferring impurities in the reaction system to 1.times.10.sup.-2 molar % or less, and then cooling the product obtained to a temperature of 45.degree. or below within 30 seconds so as to deactivate the catalyst.
摘要翻译： 一种用于有效地生产中空成型或片状或棒状成型的方法包括使含有基本上具有线性分子结构和熔体流动指数（MI）值（190℃，2160g载荷）的聚甲醛共聚物树脂 ）为0.1〜2.0g / 10分钟，以进行吹塑或挤出成型操作。 优选的聚甲醛共聚物通过在1×10 -3至1×10 -2摩尔％的三氟化硼催化剂或其配位化合物的存在下，将三恶烷作为主要单体与环醚或环状形式共聚单体共聚而制备， 将反应体系中的杂质终止或链转移至1×10 -2摩尔％以下，然后在30秒内将得到的产物冷却至45℃以下，使催化剂失活。
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公开(公告)号：US4820829A
公开(公告)日：1989-04-11
申请号：US1309
申请日：1987-01-08
申请人： Alfred Steinmann
发明人： Alfred Steinmann
IPC分类号： C07F7/08 , C07F7/22 , C07F7/30 , C08G2/00 , C08G2/10 , C08G2/14 , G03F7/039 , G03F7/075 , C07F7/02
CPC分类号： C08G2/00 , C07F7/0818 , G03F7/039 , G03F7/0758
摘要： There are disclosed novel substituted o-phthalaldehydes of formula I ##STR1## wherein at least one of the substituents R.sub.1, R.sub.2, R.sub.3, R.sub.4 is Q(alkyl).sub.3, --CH.sub.2 --Q(alkyl).sub.3, --O--Q(alkyl).sub.3, --Q(aryl).sub.3 or --Q(alkylenearyl).sub.3, wherein Q is Si, Sn or Ge, the alkyl moieties contain 1 to 12 carbon atoms, the aryl groups contain 6 or 12 ring carbon atoms and the alkylene radicals contain 1 to 4 carbon atoms, and each of the remaining substituents R.sub.1 to R.sub.4 is a hydrogen or halogen atom or a cyano, nitro, carboxyl or hydroxyl group, a C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylthio or an alkoxycarbonyl group containing 1 to 4 carbon atoms in the alkoxy moiety.The novel o-phthalaldehydes can be polymerized to give polymers that can be used as photoresists.
摘要翻译： 公开了式I（I）的新型取代邻邻醛，其中至少一个取代基R 1，R 2，R 3，R 4是Q（烷基）3，-CH 2 -Q（烷基）3，-OQ（ 烷基）3，-Q（芳基）3或-Q（亚烷基硬脂基）3，其中Q是Si，Sn或Ge，烷基部分含有1至12个碳原子，芳基含有6或12个环碳原子， 基团含有1至4个碳原子，并且其余的取代基R 1至R 4中的每一个为氢或卤素原子或氰基，硝基，羧基或羟基，C 1 -C 4烷氧基，C 1 -C 4烷硫基或含有1至4个的烷氧基羰基 烷氧基部分中的碳原子。 可以将新型邻苯二甲醛聚合，得到可用作光致抗蚀剂的聚合物。
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公开(公告)号：US4431794A
公开(公告)日：1984-02-14
申请号：US443614
申请日：1982-11-22
摘要： Oxymethylene polymers are prepared by a continuous process, by mass polymerization of the monomers with the aid of conventional, preferably cationic, initiators, wherein the monomers as well as the resulting polymer are present substantially in molten form during the polymerization.
摘要翻译： 通过连续方法，通过常规的优选阳离子引发剂的单体的大量聚合来制备亚甲基聚合物，其中单体以及所得聚合物在聚合过程中基本上以熔融形式存在。
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公开(公告)号：US4382994A
公开(公告)日：1983-05-10
申请号：US363786
申请日：1982-03-31
申请人： Kenzi Matsumi
发明人： Kenzi Matsumi
IPC分类号： C08L59/00 , B29C71/00 , B29C71/02 , B29K59/00 , C08J7/00 , C08J7/06 , C08K5/00 , C08L7/00 , C08L21/00 , C08L23/00 , C08L27/00 , C08L59/02 , C08L77/00 , C08L83/04 , C08L101/00 , B32B9/04 , B29C25/00 , C08G2/10
CPC分类号： C08K5/00 , C08L59/02 , C08L23/00 , C08L27/00 , C08L77/00 , C08L83/04 , Y10T428/3154 , Y10T428/31663 , Y10T428/31801 , Y10T428/31942
摘要： A polyacetal resin molded article having reduced water contamination is disclosed. The water contamination reduction feature is provided by the inclusion of a substantially water insoluble substance which forms a hydrophobic film on the molded article. It is furthermore required that the water insoluble substance-included polyacetal molded article be heat treated in air or in an inert gas to provide reduced water contamination.
摘要翻译： 公开了一种具有减少的水污染的聚缩醛树脂模塑制品。 通过包含在模制品上形成疏水膜的基本上不溶于水的物质来提供水污染减少特征。 此外，要求含水不溶性物质的聚缩醛成型体在空气或惰性气体中进行热处理，以减少水污染。
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公开(公告)号：US4224435A
公开(公告)日：1980-09-23
申请号：US48178
申请日：1979-06-13
申请人： Akitoshi Sugio , Akira Amamiya , Tadashi Kunii , Tomotaka Furusawa , Mutsuhiko Takeda , Katsumasa Tanaka , Toshikazu Umenura , Kiyokazu Kawaguchi
发明人： Akitoshi Sugio , Akira Amamiya , Tadashi Kunii , Tomotaka Furusawa , Mutsuhiko Takeda , Katsumasa Tanaka , Toshikazu Umenura , Kiyokazu Kawaguchi
摘要： In a method for mixing a trioxane, a polymerization catalyst and a comonomer for producing of oxymethylene copolymers by continuously copolymerizing trioxane with a cyclic ether or a cyclic acetal as a comonomer, the improved method comprises following steps:spouting a comonomer and a polymerization catalyst from nozzle openings which are set adjacent to each other,while washing both openings at the tip end of the nozzles with a flow of trioxane,whereby mixing said comonomer, said polymerization catalyst and said trioxane,and then feeding the mixture to a polymerization reactor to effect copolymerization.The raw materials are mixed together before they are fed to the polymerization reactor, and no clogging trouble at the tip end of the nozzle for feeding a polymerization catalyst occurs. Further the resulting copolymer has a much superior heat stability. In addition, since each of the reaction raw materials is quantititively fed, the molecular weight and conversion of the copolymer extended from the polymerization reactor is so constant that a stabilized operation of the polymerization reactor can be secured.
摘要翻译： 在通过将三恶烷与环醚或环状缩醛连续共聚作为共聚单体的三恶烷，聚合催化剂和用于制备甲醛共聚物的共聚单体的方法中，改进的方法包括以下步骤：将共聚单体和聚合催化剂从 喷嘴开口彼此相邻设置，同时用三恶烷流洗涤喷嘴前端的两个开口，由此混合所述共聚单体，所述聚合催化剂和所述三恶烷，然后将混合物进料到聚合反应器中以实现 共聚。 在将原料进料到聚合反应器中之前将原料混合在一起，并且不会在用于进料聚合催化剂的喷嘴的前端发生堵塞问题。 此外，所得共聚物具有非常优异的热稳定性。 此外，由于每个反应原料都是定量供料的，从聚合反应器中延伸的共聚物的分子量和转化率是恒定的，从而可以确保聚合反应器的稳定运行。
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公开(公告)号：US4115369A
公开(公告)日：1978-09-19
申请号：US855905
申请日：1977-11-29
摘要： A process for continuously producing an oxymethylene polymer by continuously polymerizing a starting monomer containing at least 50 mole% of trioxane in bulk in the presence of a catalyst, which comprises feeding the starting monomer into a first-stage polymerization reactor having a self-cleaning action to perform a first-stage polymerization reaction until the conversion reaches 40 to 70%, withdrawing the reaction mixture as a powder from the outlet of the first-stage polymerization reactor, feeding the reaction mixture into a second-stage polymerization reactor having a stirring action to perform a second-stage polymerization reaction until the conversion reaches 95 to 100%, and then withdrawing the polymerization product as a powder from the outlet of the second-stage polymerization reactor.
摘要翻译： 在催化剂存在下，通过连续聚合含有至少50摩尔％的三恶烷的起始单体的方法连续生产甲醛聚合物的方法，其包括将起始单体进料到具有自清洁作用的第一阶段聚合反应器中 进行第一阶段聚合反应，直到转化率达到40〜70％，从第一阶段聚合反应器的出口取出粉末状的反应混合物，将反应混合物进料到具有搅拌作用的第二阶段聚合反应器 进行第二阶段聚合反应，直至转化率达到95〜100％，然后从第二阶段聚合反应器的出口取出作为粉末的聚合产物。
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57.发明授权
公开(公告)号：US4108838A
公开(公告)日：1978-08-22
申请号：US655358
申请日：1976-02-05
申请人： Herbert Amann , Gerhard Morlock
发明人： Herbert Amann , Gerhard Morlock
摘要： Solid thermoplastic terpolymer of trioxane is prepared by reacting trioxane in the presence of a prepolymer having recurring units consisting essentially of about 87-99 percent by weight of units derived from at least one cyclic formal and about 13-1 percent by weight of units derived from diglycerin diformal.
摘要翻译： 三恶烷的固体热塑性三元共聚物是通过使三恶烷在预聚物存在下反应来制备的，所述预聚物的重复单元基本上由约87-99重量％的衍生自至少一个环状缩甲醛的单元和约13-1重量％衍生自 二甘油异常。
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58.发明授权
公开(公告)号：US3917563A
公开(公告)日：1975-11-04
申请号：US40849073
申请日：1973-10-23
发明人： NAKASE YOSHIAKI , YOSHIDA MASARU , IWAI TADASHI , ITO AKIHIKO
IPC分类号： C08G2/10
CPC分类号： C08G2/10
摘要： Pure and high molecular weight polyoxymethylene can be efficiently and economically produced in good yield by the polymerization of tetraoxane using a radical-forming material such as a peroxide, some nitrogen-containing compounds, a gaseous mixture containing ozone, an aqueous or organic solvent solution of hydrogen peroxide, and the like without requiring the coexistence of any known initiators for cationic polymerization.
摘要翻译： 通过使用自由基形成材料如过氧化物，一些含氮化合物，含臭氧的气体混合物，含有臭氧的水溶液或有机溶剂溶液，可以有效地和经济地制备纯的和高分子量的聚甲醛， 过氧化氢等，而不需要任何已知的用于阳离子聚合的引发剂共存。
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公开(公告)号：US3860562A
公开(公告)日：1975-01-14
申请号：US31579272
申请日：1972-12-18
发明人： YOSHIDA MASARU , NAKASE YOSHIAKI , ITO AKIHIKO
CPC分类号： C08G2/10
摘要： Tetraoxane is polymerized by means of an electron acceptor substance used as polymerization initiator in the absence or presence of a saturated aliphatic carboxylic acid anhydride and/or an acetal, to obtain an oxymethylene polymer having thermal stability. An ionizing radiation or a light can, if desired, concomitantly be employed before and/or in the course of polymerization.
摘要翻译： 在不存在或不存在饱和脂肪族羧酸酐和/或缩醛的情况下，通过用作聚合引发剂的电子受体物质聚合四烷，得到具有热稳定性的甲醛聚合物。
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公开(公告)号：US3641192A
公开(公告)日：1972-02-08
申请号：US3641192D
申请日：1968-09-13
申请人： CELANESE CORP
摘要： MOLDABLE OXYMETHYLENE COPOLYMERS ARE PRODUCED BY A NOVEL METHOD IN WHICH TRIOXANE IS REACTED WITH A PREFORMED OXYMETHYLENE COPOLYMER, CONTAINING A LARGER PORTION OF COMONOMER THAN IS DESIRED IN THE FINAL PRODUCT. TRIOXANE POLYMERIZATION CATALYSTS ARE EMPLOYED AND THE PRODUCT IS OF A HIGHER MOLECULAR WEIGHT AND CONTAINS LOWER COMONOMER CONTENT THAN THE PREFORMED COPOLYMER.
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