| abstract |
Process for prodn. of plastics reflectors for lighting units consisting of a rigid support shell with a surfacing layer of smooth metal-coated thermoplastic, comprises moulding a rigid core shell of a thermosetting plastics material over the surfacing skin forming thermoplastic chosen from polycarbonate (PC), polybutylene terephthalate (PBT), acrylonitrile-butadiene-styrene (ABS), polyetherimide (PEI), polyphenylene sulphide (PPS) and/or polyamide (PA). The thermosetting core material is chosen e.g. from diallyl-phthalate resin, urea-formaldehyde resin, epoxy resin, melamine-formaldehyde resin, melamine-phenol-formaldehyde resin, phenol-formaldehyde resin and/or unsaturated polyester resin. |