Stabilized oxymethylene copolymer composition
    1.
    发明授权
    Stabilized oxymethylene copolymer composition 失效
    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

    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

    Acetal resin composition
    3.
    发明授权
    Acetal resin composition 失效
    乙缩醛树脂组合物

    公开(公告)号:US4201849A

    公开(公告)日:1980-05-06

    申请号:US964445

    申请日:1978-11-28

    CPC分类号: C08L59/02 C08L57/00 C08L91/00

    摘要: An acetal resin composition comprising an admixture of 100 parts by weight of an acetal resin and 0.01 to 15 parts by weight of a petroleum resin, said petroleum resin being prepared by polymerizing a cracked petroleum fraction boiling between -15.degree. C. and 200.degree. C. and containing unsaturated hydrocarbons, and having a molecular weight in the range of 400 to 2500 and a second order transition temperature in the range of 35.degree. to 90.degree. C.

    摘要翻译: 一种缩醛树脂组合物,其包含100重量份的缩醛树脂和0.01至15重量份的石油树脂的混合物,所述石油树脂通过使沸点在-15℃和200℃之间的裂化石油馏分 并含有不饱和烃,分子量为400〜2500,二级转变温度为35〜90℃。

    Method for mixing raw materials for producing oxymethylene copolymers
    4.
    发明授权
    Method for mixing raw materials for producing oxymethylene copolymers 失效
    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

    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。

    Process for stabilizing oxymethylene copolymers
    5.
    发明授权
    Process for stabilizing oxymethylene copolymers 失效
    稳定甲醛共聚物的方法

    公开(公告)号:US4301273A

    公开(公告)日:1981-11-17

    申请号:US153674

    申请日:1980-05-27

    摘要: In a process for producing a stabilized oxymethylene copolymer which comprises heat-melting an oxymethylene copolymer having unstable, unblocked terminals obtained by the copolymerization of trioxane with a cyclic acetal and/or a cyclic ether to heat decompose it in the presence of available heat stabilizers; the improvement which comprises heating said oxymethylene copolymer having unblocked terminals in a mixer at a temperature between the melting point of said oxymethylene copolymer and a point 100.degree. C. higher than said melting point under a pressure of 0.1 mmHg to a atmospheric pressure for a mean residence time of 5 to 60 minutes, said mixer comprising a casing, a jacket for heating medium fitted over its external wall, and at least two stirring shafts equipped with a plurality of scraping blades disposed in said casing, said stirring shafts being capable of rotating in the same or different directions, and in the meantime, rotating said stirring shafts of said mixer to heat decompose said oxymethylene copolymer while renewing the surface of the molten oxymethylene copolymer.

    摘要翻译: 在制备稳定化的甲醛共聚物的方法中,该方法包括将具有不稳定的未封端末端的甲醛共聚物进行加热熔融,其通过三恶烷与环状缩醛和/或环醚的共聚得到,以在可用的热稳定剂存在下将其分解; 改进之处在于,在混合器中将所述具有未封端末端的甲醛共聚物在所述甲醛共聚物的熔点和高于所述熔点的高于所述熔点的100℃的温度下在0.1mmHg的压力下加热至平均气压 停留时间为5至60分钟,所述混合器包括壳体,装配在其外壁上的加热介质的护套,以及至少两个配备有设置在所述壳体中的刮刀的搅拌轴,所述搅拌轴能够旋转 在相同或不同的方向上,并且同时旋转所述混合器的所述搅拌轴以使所述甲醛共聚物分解,同时更新熔融的甲醛共聚物的表面。

    Process for continuously polymerizing trioxane
    7.
    发明授权
    Process for continuously polymerizing trioxane 失效
    连续聚合三恶烷的方法

    公开(公告)号:US4343929A

    公开(公告)日:1982-08-10

    申请号:US200065

    申请日:1980-10-23

    摘要: A process for producing a polyacetal homopolymer or copolymer which comprises continuously feeding a liquid starting mixture containing molten trioxane and a catalyst and optionally a comonomer through a feed opening of a reactor, said reactor being a continuously stirring-type mixer having two stirring shafts having a plurality of plate-like paddles fixed thereto the cross-section of each of said paddles taken perpendicularly of the axial direction of the stirring shaft having a shape of a convex lens, an ellipse or a quasipolygon inscribing a phantom circle at each vertex, one of said paddles facing another paddle fixed to the other stirring shaft and said one paddle being positioned such that it rotates while the edges thereof keep a slight clearance from the inner surface of the barrel and the other paddle; polymerizing the starting mixture while moving it toward the discharge opening by the rotation of the paddles, the improvement wherein the profiles of the paddles are changed, or the arrangement of the paddles is changed continuously or stepwise, so that the transportability of the reaction mixture becomes progressively smaller from the feed opening toward the discharge opening of the reactor.

    摘要翻译: 一种制备聚缩醛均聚物或共聚物的方法,其包括通过反应器的进料口连续地供给含有熔融三恶烷和催化剂和任选的共聚单体的液体起始混合物,所述反应器是具有两个搅拌轴的连续搅拌型混合器, 多个板状的叶片固定在其上,垂直于搅拌轴的轴向垂直于每个顶点形成凸透镜,椭圆形或准圆体的形状的每个顶板上的假体圆的横截面, 所述桨叶面向固定到另一个搅拌轴的另一个桨叶,并且所述一个桨叶定位成使得其旋转,同时其边缘保持与筒体和另一个桨叶的内表面的微小间隙; 使起始混合物通过桨叶的旋转而朝向排出口移动而聚合起始混合物,改进了桨叶的轮廓改变,或者桨叶的排列被连续或逐步地改变,使得反应混合物的输送性变为 从进料口向反应器的排出口逐渐变小。

    Resin composition containing polyphenylene oxide
    9.
    发明授权
    Resin composition containing polyphenylene oxide 失效
    含有聚苯醚的树脂组合物

    公开(公告)号:US4153644A

    公开(公告)日:1979-05-08

    申请号:US640776

    申请日:1975-12-15

    摘要: A novel resin composition improved in moldability and impact resistance, comprising (A) a polyphenylene oxide having a molecular weight of 5,000 or higher, (B) an aromatic hydrocarbon-formaldehyde resin or a modified aromatic hydrocarbon-formaldehyde resin, and, if necessary, (C) a rubbery polymer, the weight ratio of the resin (A) to the resin (B) being from 10:90 to 99:1 and the amount of the rubbery polymer (C) being 3 to 40 parts by weight per 100 parts by weight of the sum of the resins (A) and (B). This resin composition has excellent mechanical and electrical properties of the polyphenylene oxide together with an improved moldability, impact resistance, and adhesiveness.

    摘要翻译: 一种提高成型性和耐冲击性的新型树脂组合物,其包含(A)分子量为5,000以上的聚苯醚,(B)芳香族烃 - 甲醛树脂或改性芳香族 - 甲醛树脂,如果需要, (C)橡胶状聚合物,树脂(A)与树脂(B)的重量比为10:90〜99:1,橡胶状聚合物(C)的量为3〜40重量份/ 100 (A)和(B)之和的重量份。 该树脂组合物具有优异的聚苯醚的机械和电学性能以及改进的成型性,耐冲击性和粘合性。

    Resin composition containing polyphenylene oxide
    10.
    发明授权
    Resin composition containing polyphenylene oxide 失效
    含有聚苯醚的树脂组合物

    公开(公告)号:US4228258A

    公开(公告)日:1980-10-14

    申请号:US7572

    申请日:1979-01-29

    摘要: A novel resin composition improved in moldability and impact resistance, comprising (A) a polyphenylene oxide having a molecular weight of 5,000 or higher, (B) an aromatic hydrocarbon-formaldehyde resin or a modified aromatic hydrocarbon-formaldehyde resin, and, if necessary, (C) a rubbery polymer, the weight ratio of the resin (A) to the resin (B) being from 10:90 to 99:1 and the amount of the rubbery polymer (C) being 3 to 40 parts by weight per 100 parts by weight of the sum of the resins (A) and (B). This resin composition has excellent mechanical and electrical properties of the polyphenylene oxide together with an improved moldability, impact resistance, and adhesiveness.

    摘要翻译: 一种提高成型性和耐冲击性的新型树脂组合物,其包含(A)分子量为5,000以上的聚苯醚,(B)芳香族烃 - 甲醛树脂或改性芳香族 - 甲醛树脂,如果需要, (C)橡胶状聚合物,树脂(A)与树脂(B)的重量比为10:90〜99:1,橡胶状聚合物(C)的量为3〜40重量份/ 100 (A)和(B)之和的重量份。 该树脂组合物具有优异的聚苯醚的机械和电学性能以及改进的成型性,耐冲击性和粘合性。