Abstract:
Articles of high molecular weight thermoplastic polycarbonates having high resistance to ultraviolet radiation while retaining good mechanical properties prepared by applying to the surface of the articles a liquid mixture containing 2 - 20 percent by weight of an ultraviolet absorber in a mixture of 10 to 80 parts by weight of one or more aliphatic C1 - C3 halogenohydrocarbons, 20 to 80 parts by weight of one or more lower aliphatic C1 - C4 alcohols, which may be halogen-substituted, and 0 to 25 parts by weight of water. The mixtures are applied to the polycarbonate at room temperature and subsequently dried at 70* - 100*C.
Abstract:
Homopolymers and copolymers based on alkenoyloxybenzylidenemalonic esters of the formula
WHERE R1 is hydrogen or C1 to C4-alkyl; R2 is C1 to C12-alkyl or cycloalkyl and R3 is hydrogen, C1 to C8-alkyl, C1 to C8-alkoxy or halogen, and plastics, i.e., polycarbonates, stabilized therewith.
Abstract:
A transparent moulding composition comprising a bisphenol polycarbonate having a low refractive index due to a content of alkyl substitution and a rubber and/or a resin.