Polyphenylene ether blends and a process for the preparation thereof
    1.
    发明授权
    Polyphenylene ether blends and a process for the preparation thereof 失效
    聚苯醚共混物及其制备方法

    公开(公告)号:US5929168A

    公开(公告)日:1999-07-27

    申请号:US737497

    申请日:1996-11-19

    摘要: The present invention concerns polymer blends and processes for the preparation thereof. The present blends contain a) 5 to 95 parts by weight of poly(2,6-dimethyl-1,4-phenylene)ether, b) 95 to 5 parts by weight of a second polymer which is immiscible therewith, and c) a component (a compatibilizer) which enhances the compatibility of the polymers. According to the invention the component enhancing the compatibility of the polymers comprises 0.1 to 10%, preferably about 1.5 to 10%, calculated on basis of the total weight of components a and b, of at least one compound C, which has the formulaA.sub.i --B.sub.j IwhereinA stands for a group which contains at least one ring with 3 to 7 members, capable of forming ring-to-ring interactions with the phenyl rings of poly(2,6-dimethyl-1,4-phenylene)ether,B is a polar group,i is an integer 1 to 20, andj is an integer 0 to 20,whereati+j is greater than or equal to 2,the melting point of compound C is above 50.degree. C. and the boiling point thereof above 200.degree. C. (at 760 mmHg) and ccompound C is capable of at least partially dissolving poly(2,6-dimethyl-1,4-phenylene)ether and is preferably a hydroquinone derivative.

    摘要翻译: PCT No.PCT / FI95 / 00275 Sec。 371日期1996年11月19日 102(e)1996年11月19日PCT PCT 1995年5月19日PCT公布。 公开号WO95 / 32243 日期:1995年11月30日本发明涉及聚合物共混物及其制备方法。 本发明共混物包含a)5-95重量份的聚(2,6-二甲基-1,4-亚苯基)醚,b)95-5重量份与其不混溶的第二聚合物,和c)a 组分(增容剂),其增强聚合物的相容性。 根据本发明,提高聚合物相容性的组分包含0.1至10%,优选约1.5至10%,基于组分a和b的总重量计算,至少一种化合物C具有式A1- 其中A代表含有至少一个具有3至7个成员的环的基团,其能够与聚(2,6-二甲基-1,4-亚苯基)醚的苯环形成环 - 环相互作用,B是 极性基,i为1〜20的整数,j为0〜20的整数,i + j大于或等于2,化合物C的熔点在50℃以上,沸点 高于200℃(760mmHg),c化合物C能够至少部分溶解聚(2,6-二甲基-1,4-亚苯基)醚,优选氢醌衍生物。

    Silicoaluminophosphate isomerization catalyst
    3.
    发明申请
    Silicoaluminophosphate isomerization catalyst 审中-公开
    硅铝磷酸异构化催化剂

    公开(公告)号:US20070287871A1

    公开(公告)日:2007-12-13

    申请号:US11725103

    申请日:2007-03-16

    摘要: A catalyst system for treating a hydrocarbonaceous feed comprising a matrix selected from the group consisting of alumna, silica alumina, titanium alumina and mixtures thereof; a support medium substantially uniformly distributed through said matrix comprising a SAPO-11 molecular sieve; and 0.1 to 1.0 wt % (based on the total weight of the catalyst system) of a catalytically active metal phase supported on said medium and comprising a metal selected from the group consisting of platinum, palladium, ruthenium, rhodium or mixtures thereof. The catalyst system is characterized in that said SAPO-11 molecular sieve has: a) a silica to alumina molar ratio of 0.08 to 0.24; b) a phosphorous to alumina ratio of 0.75 to 0.83; c) a surface area of at least 150 m2/g; d) a crystallite size in the range 250 to 600 angstroms; and, e) a sodium content of less than 2000 ppm weight.

    摘要翻译: 一种用于处理含烃原料的催化剂体系,其包含选自校准物,二氧化硅氧化铝,钛氧化铝及其混合物的基质; 基本上均匀分布在包含SAPO-11分子筛的基质中的载体介质; 和0.1至1.0重量%(基于催化剂体系的总重量)负载在所述介质上的催化活性金属相,并且包含选自铂,钯,钌,铑或其混合物的金属。 催化剂体系的特征在于所述SAPO-11分子筛具有:a)二氧化硅与氧化铝的摩尔比为0.08至0.24; b)磷与氧化铝的比例为0.75至0.83; c)表面积至少为150m 2 / g; d)微晶尺寸在250至600埃的范围内; 和e)小于2000ppm重量的钠含量。