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    Polycarbonate plates with improved flame resistance
    4.
    发明授权
    Polycarbonate plates with improved flame resistance 有权
    具有改善阻燃性的聚碳酸酯板

    公开(公告)号：US09371437B2

    公开(公告)日：2016-06-21

    申请号：US13505014

    申请日：2010-11-03

    申请人： Alexander Meyer ,  Berit Krauter ,  Claus Rüdiger ,  Ulrich Blaschke ,  Peter Schwarz

    发明人： Alexander Meyer ,  Berit Krauter ,  Claus Rüdiger ,  Ulrich Blaschke ,  Peter Schwarz

    IPC分类号： B32B5/00 ,  C09D169/00 ,  C08L69/00 ,  C08K5/521 ,  B32B27/28 ,  B32B27/06 ,  C08K5/49 ,  C08K5/523

    CPC分类号： C08K5/49 ,  C08K5/523 ,  Y10T428/31507 ,  C08L69/00

    摘要： A sheet containing a base layer containing polycarbonate and a flame retardant, wherein the flame retardant contains a compound of formula 1 wherein R1, R2, R3 and R4, represents an optionally halogen-substituted C1-C8 alkyl, C5-C6 cycloalkyl, C6-C10 aryl or C7-C12 aralkyl, R5 and R6, represents a C1-C4 alkyl, and Y represents a C1-C7 alkylidene, C1-C7 alkylene, C5-C12 cycloalkylidene, —O—, —S—, —SO—, —SO2—, —CO— or a residue of formula (2) or (3) wherein Z represents carbon and R21 and R22 can be selected for each Z individually and, represent hydrogen or C1-C6 alkyl, with the proviso that, on at least one Z atom, R21 and R22 are simultaneously alkyl and wherein the polycarbonate comprises a mixture of linear and branched polycarbonate and wherein the linear polycarbonate content is at least 40 wt. %, based on the total polycarbonate weight.

    摘要翻译： 包含含有聚碳酸酯和阻燃剂的基层的片材，其中所述阻燃剂含有式1的化合物，其中R 1，R 2，R 3和R 4表示任选卤素取代的C 1 -C 8烷基，C 5 -C 6环烷基， C10芳基或C7-C12芳烷基，R5和R6表示C1-C4烷基，Y表示C1-C7亚烷基，C1-C7亚烷基，C5-C12亚环烷基，-O - ， - S - ， - SO-， -SO 2 - ， - CO-或式（2）或（3）的残基，其中Z表示碳，R 21和R 22可以各自独立选择，并且表示氢或C 1 -C 6烷基，条件是在 至少一个Z原子，R 21和R 22同时是烷基，并且其中所述聚碳酸酯包含直链和支链聚碳酸酯的混合物，并且其中线性聚碳酸酯含量为至少40wt。 ％，基于聚碳酸酯的总重量。

    PROCESS FOR PRODUCING BISPHENOL A WITH AN EXTENDED SERVICE LIFE IN THE CRYSTALLISATION
    9.
    发明申请
    PROCESS FOR PRODUCING BISPHENOL A WITH AN EXTENDED SERVICE LIFE IN THE CRYSTALLISATION 审中-公开
    在结晶器中生产具有延长服务寿命的双酚A的方法

    公开(公告)号：US20080281130A1

    公开(公告)日：2008-11-13

    申请号：US12115655

    申请日：2008-05-06

    申请人： Ulrich Blaschke ,  Raymond Audenaert ,  Jeroen Geers ,  Philip De Kock ,  Paul Salembier ,  Dirk Petein

    发明人： Ulrich Blaschke ,  Raymond Audenaert ,  Jeroen Geers ,  Philip De Kock ,  Paul Salembier ,  Dirk Petein

    IPC分类号： C07C37/68

    CPC分类号： C07C37/20 ,  C07C37/84 ,  C07C39/16

    摘要： The invention describes a process for producing bisphenol with a content of less than 15 wt. % of phenol, wherein a suspension crystallisation of a product mixture containing bisphenol A, minor components and phenol is performed in a crystalliser, the product mixture being pumped through a heat exchanger. Due to deposition (fouling, i.e. crystallisation and deposition on the surface of the heat exchangers) in the heat exchanger, the pressure difference increases from 0.5 to 3 bar across the heat exchanger. The resulting reduced flow rate, which would lead to increased fouling in the crystalliser, is offset by continuously increasing the speed of the pump, the pump speed being regulated in such a way that the current consumption of the pump is maintained such that it fluctuates by a maximum of 5%.

    摘要翻译： 本发明描述了一种生产含量小于15重量％的双酚的方法。 ％的苯酚，其中在结晶器中进行含有双酚A，次要组分和苯酚的产物混合物的悬浮液结晶，产物混合物被泵送通过热交换器。 由于热交换器中的沉积（结垢，即结晶并沉积在热交换器的表面上），压力差通过热交换器从0.5增加到3巴。 所产生的降低的流速将导致结晶器中的结垢增加，这通过连续地提高泵的速度而被抵消，泵的速度被调节为使得泵的电流消耗保持为使得其波动 最多5％。