| Patent Number |
Title Of Patent |
Date Issued |
| 6359042 |
Polycarbonate moulding compounds and their use as layers in coextruded sheets |
March 19, 2002 |
| A polycarbonate molding composition containing a UV absorber and two types of mold release agents is disclosed. The composition is suitable for use as coating or external layer on coextruded sheets. |
| 5856012 |
Process for the production of multilayer plastic sheets |
January 5, 1999 |
| The invention relates to a process for the production of multilayer plastic sheets from special branched polycarbonates. |
| 5852138 |
Stabilizer mixtures and their use in polycarbonates |
December 22, 1998 |
| The invention provides stabilizer mixtures comprising phosphines, silicon compound and optionally silicon-free oxetane compounds and/or silicon-free epoxide compounds and their use for stabilizing thermoplastic aromatic polycarbonates. |
| 5846659 |
UV-protected, multilayer polycarbonate sheets |
December 8, 1998 |
| The present invention relates to UV-protected, multilayer polycarbonate sheets containing a base sheet, at least one outer layer and optionally at least one additional protective layer, and to the production of the polycarbonate sheets according to the invention by coextrusion. |
| 5726228 |
Use of carbonates as demoulding agents for thermoplastic polycarbonates |
March 10, 1998 |
| The present invention relates to the use of cyclic carbonates as demoulding agents for thermoplastic polycarbonates, and to the incorporation of these cyclic carbonates into the thermoplastic polycarbonates. |
| 5627256 |
Polycarbonates containing aryl phosphines |
May 6, 1997 |
| The present invention relates to thermoplastic aromatic polycarbonates having a content of special aryl phosphines, to their preparation, and to their use in the light engineering sector and in optics. |
| 5545710 |
Use of special polycarbonates for the production of optical articles |
August 13, 1996 |
| The present invention provides the use of polycarbonates containing carbonate structural units of the formula (I), ##STR1## for the production of optical articles, novel polycarbonates, which contain the structural units (I), together with a process for the production of these no |
