专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4224435A Method for mixing raw materials for producing oxymethylene copolymers 失效
标题翻译：用于混合生产甲醛共聚物的原料的方法
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
IPC分类号： B01J4/00 , C08G2/00 , C08G2/10 , C08G2/18
CPC分类号： C08G2/18 , B01J4/001 , C08G2/00
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。

2. 发明授权

US4342680A Stabilized oxymethylene copolymer composition 失效
标题翻译：稳定的甲醛共聚物组合物
公开(公告)号：US4342680A
公开(公告)日：1982-08-03
申请号：US132165
申请日：1980-03-20
申请人： Akitoshi Sugio , Akira Amemiya , Masaharu Kimura , Yoshiharu Otuki , Kiyokazu Kawaguchi
发明人： Akitoshi Sugio , Akira Amemiya , Masaharu Kimura , Yoshiharu Otuki , Kiyokazu Kawaguchi
IPC分类号： C08L59/00 , C08G2/18 , C08G2/28 , C08K3/18 , C08K5/05 , C08K5/09 , C08K5/13 , C08K5/34 , C08K5/3492 , C08K13/02 , C08L59/04 , C08K3/22
CPC分类号： C08K5/3492 , C08G2/18 , C08G2/28 , C08K13/02
摘要： A stabilized oxymethylene copolymer composition comprising an oxymethylene copolymer, and incorporated therein,(1) at least one amine-substituted triazine of the following formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are a hydrogen atom, a halogen atom, a hydroxyl group, an alkyl group, an alkoxy group, an aryl group, a hydrogenated aryl group, an amino group or a substituted amino group, and at least one of them is an amino group or a substituted amino group,(2) at least one sterically hindered phenol of the following formula ##STR2## wherein R.sub.4 and R.sub.5 are an alkyl group, a substituted alkyl group or a substituted triazole group and R.sub.6 is an alkyl group, a substituted alkyl group, an alkoxy group or a substituted amino group, and(3) at least one metal-containing compound selected from the group consisting of the hydroxides, inorganic acid salts, carboxylic acid salts and alkoxides of an alkali metal which is sodium or potassium or an alkaline earth metal which is magnesium, calcium or barium.
摘要翻译：一种稳定化的甲醛共聚物组合物，其包含甲醛共聚物，并且其中并入其中，（1）至少一种下式的胺取代的三嗪其中R 1，R 2和R 3是氢原子，卤素原子，羟基，烷基，烷氧基，芳基，氢化芳基，氨基或取代氨基，并且它们中的至少一个是氨基或取代的氨基，（2）至少一个空间位阻苯酚，其中R4和R5是烷基，取代的烷基或取代的三唑基，R6是烷基，取代的烷基，烷氧基或取代的氨基，和（3））至少一种含金属的化合物，其选自碱金属的氢氧化物，无机酸盐，羧酸盐和醇盐，其为钠或钾，或碱土金属为镁，钙或钡嗯

3. 发明授权

US4189565A Process for polymerizing trioxane 失效
标题翻译：三恶烷聚合方法
公开(公告)号：US4189565A
公开(公告)日：1980-02-19
申请号：US971565
申请日：1978-12-20
申请人： Akitoshi Sugio , Akira Amemiya , Tetsuya Abe , Tomotaka Furusawa , Takeo Suzumori , Mutsuhiko Takeda , Masaharu Kimura , Yoshiharu Ohtsuki , Katsumasa Tanaka , Toshikazu Umemura , Kiyokazu Kawaguchi , Michio Ohba
发明人： Akitoshi Sugio , Akira Amemiya , Tetsuya Abe , Tomotaka Furusawa , Takeo Suzumori , Mutsuhiko Takeda , Masaharu Kimura , Yoshiharu Ohtsuki , Katsumasa Tanaka , Toshikazu Umemura , Kiyokazu Kawaguchi , Michio Ohba
IPC分类号： C07D323/06 , C08F2/10 , C08G2/00 , C08G2/10 , C08G2/18
CPC分类号： C08G2/10 , C08G2/18
摘要： A process for polymerizing trioxane made from an aqueous solution of methanol-containing formaldehyde by a conventional method or copolymerizing the trioxane with another monomer, characterized bycooling the trioxane to crystallize it,allowing the trioxane in a crystalline state to stand in an open system in an atmosphere of air or an inert gas to remove polyoxymethylene dimethoxide from the trioxane,melting the trioxane, andpolymerizing the trioxane or copolymerizing the trioxane and the another monomer.
摘要翻译：聚合由甲醇含甲醛的水溶液通过常规方法或将三恶烷与另一种单体共聚的三恶烷的方法，其特征在于冷却三恶烷以使其结晶，使得结晶状态的三恶烷以开放体系空气或惰性气体气氛，从三恶烷中除去聚甲醛二甲氧基化物，熔融三恶烷，聚合三恶烷或共聚三恶烷和另一种单体。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式