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1.发明授权Method for converting cyclic polycarbonate oligomer mixtures to linear polycarbonate, and composition resulting therefrom 失效将环状聚碳酸酯低聚物混合物转化为线性聚碳酸酯的方法，以及由其制得的组合物
公开(公告)号：US4740583A
公开(公告)日：1988-04-26
申请号：US888673
申请日：1986-07-24
申请人： Daniel J. Brunelle , Thomas L. Evans , Michael A. Vallance , Kevin R. Stewart , Thomas G. Shannon , David A. Williams , Dwight J. Patterson , Niles R. Rosenquist , William Hilakos
发明人： Daniel J. Brunelle , Thomas L. Evans , Michael A. Vallance , Kevin R. Stewart , Thomas G. Shannon , David A. Williams , Dwight J. Patterson , Niles R. Rosenquist , William Hilakos
摘要： Cyclic polycarbonate (or thiol analog) oligomer mixtures are prepared by the reaction of bishaloformates or their thio analogs, or mixtures thereof with dihydroxy or dimercapto compounds, with alkali metal hydroxides and various amines. The oligomer mixtures may be converted to polycarbonates or their thiol analogs by a method which is particularly adaptable to integration with polycarbonate processing operations. Polymerization may be conducted simultaneously with molding, extrusion and the like. The oligomer mixtures are adaptable to the preparation of filled prepregs.
摘要翻译： 通过双卤代甲酸酯或其硫代类似物或其与二羟基或二巯基化合物的混合物与碱金属氢氧化物和各种胺的反应制备环状聚碳酸酯（或硫醇类似物）低聚物混合物。 低聚物混合物可以通过特别适用于与聚碳酸酯加工操作整合的方法转化为聚碳酸酯或其硫醇类似物。 聚合可以与成型，挤出等同时进行。 低聚物混合物适用于填充的预浸料的制备。
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2.发明授权Composition and method for controlling polymerization rate of cyclic polycarbonate oligomer with encapsulated catalyst 失效用封装催化剂控制环状聚碳酸酯低聚物的聚合速度的组成和方法
公开(公告)号：US4755588A
公开(公告)日：1988-07-05
申请号：US899375
申请日：1986-08-22
CPC分类号： C08G64/30
摘要： The polymerization rate of a cyclic polycarbonate oligomer composition to linear polycarbonates is controlled by encapsulating a polycarbonate formation catalyst in a thermoplastic polymer which is soluble or stably dispersible in said oligomer compositions at elevated temperatures; blending the encapsulated catalyst with the oligomer composition under non-polymerization conditions; and heating the blend to a temperature at which polymerization takes place. Among the polymers suitable for encapsulating the catalyst are polyetherimides.
摘要翻译： 环状聚碳酸酯低聚物组合物对线性聚碳酸酯的聚合速率通过将聚碳酸酯形成催化剂包封在热可塑性聚合物中来控制，热塑性聚合物在高温下可溶或稳定地分散在所述低聚物组合物中; 在非聚合条件下将包封的催化剂与低聚物组合物共混; 并将共混物加热至发生聚合的温度。 适用于包封催化剂的聚合物中有聚醚酰亚胺。
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3.发明授权Method for the impregnation of filament wound structures with thermoplastic binders 失效用热塑性粘合剂浸渍细丝缠绕结构的方法
公开(公告)号：US4865787A
公开(公告)日：1989-09-12
申请号：US189456
申请日：1988-05-02
CPC分类号： B29C70/326 , B29B15/10
摘要： Filament wound or dry lay-ups of structural shapes are impregnated with a binder of thermoplastic resin. Impregnation is achieve by adding a polymer solution to a centrifuge containing reinforcing material. The centrifuge is spun at high rotational speed. Solution is metered into the centrifuge and contacts the inner surface of the reinforicng material. A preheated carrier gas flow is circulated in the centrifuge using baffles, then released to a solvent recovery system. Alternatively, vacuum drying to recover solvent can be used.
摘要翻译： 用热塑性树脂粘合剂浸渍结构形状的细丝伤口或干燥层叠物。 通过向含有增强材料的离心机中加入聚合物溶液来实现浸渍。 离心机以高转速旋转。 将溶液计量到离心机中并与加强材料的内表面接触。 使用挡板将预热的载气流在离心机中循环，然后释放到溶剂回收系统中。 或者，可以使用真空干燥以回收溶剂。
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公开(公告)号：US4935723A
公开(公告)日：1990-06-19
申请号：US396401
申请日：1989-08-21
申请人： Michael A. Vallance
发明人： Michael A. Vallance
CPC分类号： G08B13/126 , G08B13/04 , G08B13/1618
摘要： A security window is a laminated pair of polymeric window panels having waveguides sandwiched therebetween for transmission of ultrasonic compression waves. The waveguide transmission medium is glass fibers extending from edge to edge of the plastic panels and distributed in plastic strips which cover the entire window area. The index of refraction of the glass fibers is as identical as possible to that of the surrounding plastics, making the waveguides substantially invisible. A transducer initiates an ultrasonic compression wave which travels the length of the waveguide, and is detected by a transducer at the other end of the waveguide. The received signal amplitude diminishes when the waveguide is damaged and such change is used to trigger an external alarm system.
摘要翻译： 安全窗是层叠的一对聚合物窗板，其间夹有波导以便传输超声压缩波。 波导传输介质是从塑料面板的边缘延伸到边缘的玻璃纤维，并且分布在覆盖整个窗口区域的塑料条中。 玻璃纤维的折射率尽可能与周围塑料的折射率相同，使得波导基本上不可见。 换能器启动行进波导长度的超声波压缩波，并由波导另一端的换能器检测。 当波导损坏时，接收的信号振幅减小，这种变化用于触发外部报警系统。
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公开(公告)号：US4972176A
公开(公告)日：1990-11-20
申请号：US407981
申请日：1989-09-15
申请人： Michael A. Vallance
发明人： Michael A. Vallance
CPC分类号： G08B13/04
摘要： The security window is a laminated pair of polymeric panels having electrically conductive rods sandwiched therebetween. Glass fibers, having electrically conductive coatings, extend from edge to edge of the plastic window panels and are distributed in the rods which substantially cover the entire window area. The index of refraction of the coated glass fibers is as identical as possible to that of the surrounding plastics, making the electrically conductive rods substantially invisible. The conductive rods are connected in series. The resistance characteristics of the circuit are monitored to detect damage to the window.
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公开(公告)号：US4892774A
公开(公告)日：1990-01-09
申请号：US141708
申请日：1988-01-07
申请人： Michael A. Vallance
发明人： Michael A. Vallance
CPC分类号： B32B27/12 , Y10T156/1044 , Y10T156/1048 , Y10T428/1362 , Y10T428/1366 , Y10T428/1369 , Y10T428/1372 , Y10T428/24099 , Y10T428/24107 , Y10T428/24124 , Y10T428/24628 , Y10T428/24636 , Y10T442/2057 , Y10T442/365
摘要： Disclosed are interleafed fiber-reinforced thermoplastic composites formed by introducing a ductile interleaf block copolymer layer to a fiber-reinforced thermoplastic layer. Also disclosed are methods for producing such composites. These composites are useful in numerous applications where toughness, impact strength and resistance to delamination are desirable.
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