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    Reduction of monomer level in acrylonitrile polymers - by exposure to ionising radiation at defined low dosage
    11.
    发明专利
    Reduction of monomer level in acrylonitrile polymers - by exposure to ionising radiation at defined low dosage 未知

    公开(公告)号：IT1111069B

    公开(公告)日：1986-01-13

    申请号：IT5199578

    申请日：1978-11-21

    Applicant: RADIATION DYNAMICS INC SOC DEL

    IPC: C08J20060101 ,  C08J

    Abstract: Acrylonitrile polymers, partic. including acrylonitrile/styrene copolymers, are exposed to ionising radiation at a dosage level of 0.05-2 megarads. Such polymers can be in the form of shaped articles. Irradiation can be followed by an HCN degassing treatment. The ionisation radiation can be provided by an electron beam. Other suitable copolymers are those of acrylonitrile with butadiene, methyl acrylate and other acrylates. If desired, the treatment can be applied first to the material in ground or pelletised form, then to the article produced from it. The material can also be treated in soln. or in suspension e.g. in a polymerisation medium. Carcinogenic acrylonitrile monomer can be removed while causing only a low level of HCN generation, which itself is removed in the process by degassing.

    15.
    发明专利
    未知

    公开(公告)号：ES287129Y

    公开(公告)日：1986-07-16

    申请号：ES287129

    申请日：1985-05-29

    Applicant: RADIATION DYNAMICS,INC.

    IPC: A01L20060101 ,  A01L7/02 ,  C08L23/02 ,  C08L23/22 ,  F16F20060101 ,  F16F1/36

    Abstract: This invention relates to a method of and devices for impact and vibration damping and, more particularly, to devices composed of an elastoplastic material including the characteristics of damping, heat and pressure dimensional stability, and moisture non absorbency of a blend of polyolefin and conjugated diene butyl rubber which converts impact shock or vibration energy into thermal energy.

    UN DISPOSITIVO DE AMORTIGUACION DE CHOQUE POR IMPACTO Y VI- BRACION
    16.
    发明专利
    UN DISPOSITIVO DE AMORTIGUACION DE CHOQUE POR IMPACTO Y VI- BRACION 未知

    公开(公告)号：ES287129U

    公开(公告)日：1985-12-16

    申请号：ES287129

    申请日：1985-05-29

    Applicant: RADIATION DYNAMICS,INC.

    IPC: A01L20060101 ,  A01L7/02 ,  C08L23/02 ,  C08L23/22 ,  F16F20060101 ,  F16F1/36

    Abstract: Un dispositivo de amortiguación de choque por impacto y vibración, que comprende, en combinación, a) una herradura, b) una almohadilla constituida por una mezcla de una poliolefina y butilo-dieno conjugado siendo dicha almohadilla esencialmente no absorbente de humedad, dimensionalmente estable y capaz de amortiguación de choque dinámico convirtiendo una notable cantidad de energía de impacto de choque en calor, y c) medios para permitir fijar dicha herradura a un caballo con dicha almohadilla dispuesta entre ellos.

    19.
    发明专利
    未知

    公开(公告)号：DE2342772C3

    公开(公告)日：1980-01-17

    申请号：DE2342772

    申请日：1973-08-24

    Applicant: RADIATION DYNAMICS, INC., WESTBURY, LONG ISLAND, N.Y. (V.ST.A.)

    Inventor： THOMPSON JUN., CHESTER C., ROSLYN HEIGHTS ,  OLSEN, SEVERT E., STATEN ISLAND ,  LOBY, RAYMOND J., PLAINVIEW, LONG ISLAND

    IPC: H01T4/16 ,  H01T4/20 ,  H02H7/12 ,  H02H9/06 ,  H02M7/04 ,  H02M7/06 ,  H02M7/10 ,  H01L25/02

    Abstract: A high voltage solid-state rectifier includes multiple series connected ac-compensated diodes and series buffer resistors in a stepped spiral stack. The stack is encased in a sectionalized faraday shield which provides 360 DEG isolation from external rf electrostatic fields and provides external capacitance grading along the stack. Spark gaps between shield sections prevent excessive voltage build-up due to electrical discharges and are arranged in line of sight of each other to permit the ultra-violet light produced from one spark gap firing to stimulate the firing of the other spark gaps. A trigger spark-gap derives its voltage from an inductance in series with the solid-state rectifier. Any electrical discharges which result in an excessive voltage appear initially across the inductance, firing the trigger spark gap which in turn initiates the other spark gaps to fire by ultra-violet stimulation.

    20.
    发明专利
    未知

    公开(公告)号：DE2342772B2

    公开(公告)日：1979-05-10

    申请号：DE2342772

    申请日：1973-08-24

    Applicant: RADIATION DYNAMICS, INC., WESTBURY, LONG ISLAND, N.Y. (V.ST.A.)

    Inventor： THOMPSON JUN., CHESTER C., ROSLYN HEIGHTS ,  OLSEN, SEVERT E., STATEN ISLAND ,  LOBY, RAYMOND J., PLAINVIEW, LONG ISLAND

    IPC: H01T4/16 ,  H01T4/20 ,  H02H7/12 ,  H02H9/06 ,  H02M7/04 ,  H02M7/06 ,  H02M7/10 ,  H01L25/02

    Abstract: A high voltage solid-state rectifier includes multiple series connected ac-compensated diodes and series buffer resistors in a stepped spiral stack. The stack is encased in a sectionalized faraday shield which provides 360 DEG isolation from external rf electrostatic fields and provides external capacitance grading along the stack. Spark gaps between shield sections prevent excessive voltage build-up due to electrical discharges and are arranged in line of sight of each other to permit the ultra-violet light produced from one spark gap firing to stimulate the firing of the other spark gaps. A trigger spark-gap derives its voltage from an inductance in series with the solid-state rectifier. Any electrical discharges which result in an excessive voltage appear initially across the inductance, firing the trigger spark gap which in turn initiates the other spark gaps to fire by ultra-violet stimulation.

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