(JP9509976-W)      Radiation-crosslinked polymer systems with reversible temp.-dependent radiation transmission are claimed (I). Also claimed is a process for the prodn. of (I), by converting the polymer into the form required for the application concerned and then subjecting it to irradiation.    USE -   Used for the reversible temp.-dependent control of radiation transmission in glazing systems and solar energy devices (claimed).    ADVANTAGE -   Provides crosslinked polymer systems with reversible temp.-dependent transmission properties, variability of processing, short switching times and low creep, without the disadvantages of chemically-crosslinked systems (poor reversibility, short working time, limited choice of polymer types).    (US5977201-A)      Radiation-crosslinked polymer systems with reversible temp.-dependent radiation transmission are claimed (I). Also claimed is a process for the prodn. of (I), by converting the polymer into the form required for the application concerned and then subjecting it to irradiation.    USE -   Used for the reversible temp.-dependent control of radiation transmission in glazing systems and solar energy devices (claimed).    ADVANTAGE -   Provides crosslinked polymer systems with reversible temp.-dependent transmission properties, variability of processing, short switching times and low creep, without the disadvantages of chemically-crosslinked systems (poor reversibility, short working time, limited choice of polymer types).    (CN1145630-A)      Radiation-crosslinked polymer systems with reversible temp.-dependent radiation transmission are claimed (I). Also claimed is a process for the prodn. of (I), by converting the polymer into the form required for the application concerned and then subjecting it to irradiation.    USE -   Used for the reversible temp.-dependent control of radiation transmission in glazing systems and solar energy devices (claimed).    ADVANTAGE -   Provides crosslinked polymer systems with reversible temp.-dependent transmission properties, variability of processing, short switching times and low creep, without the disadvantages of chemically-crosslinked systems (poor reversibility, short working time, limited choice of polymer types).