| Patent Number |
Title Of Patent |
Date Issued |
| 6887968 |
Process for the recycling of polycarbonates |
May 3, 2005 |
| A process for making a high molecular weight (co)polycarbonate resin is disclosed. The process entails (i) obtaining at least one member selected from the group low molecular weight residue (weight average molecular weight 15,000 to 30,000) of aromatic (co)polycarbonate production, waste |
| 5440066 |
Process for splitting polycarbonates |
August 8, 1995 |
| A continuous process for splitting an aromatic polycarbonate resin is disclosed. Accordingly there are reacted in a distillation column and in the presence of a catalyst(i) a polycarbonate resin in solution with(ii) methanolto produce a dihydroxy compound and dimethyl carbonate. The solution |
| 5112925 |
Special diorganosiloxane block copolycarbonates |
May 12, 1992 |
| The present invention relates to a process for the preparation of polydiorganosiloxane block copolycarbonates having special bridging members between the siloxane blocks and the carbonate blocks, and the polydiorganosiloxane block copolycarbonates which are obtainable by the process |
| 5108835 |
Coextruded double walled sheet of linear polycarbonate resin |
April 28, 1992 |
| The invention relates to a process for coating moldings via co-extrusion with a UV-absorber-containing layer containing special dimeric UV absorbers and to the moldings coated with a corresponding layer. |
| 4544762 |
Process for the preparation of oligomeric aluminoxanes |
October 1, 1985 |
| The present invention relates to a process for the preparation of oligomeric alkylaluminoxanes of the general formulae: ##STR1## in which R=C.sub.1 -C.sub.6 -alkyl, preferably methyl, and n=2-40, preferably 10-20, by reacting aluminum salts containing water of crystallization, pr |
| 4542199 |
Process for the preparation of polyolefins |
September 17, 1985 |
| The invention relates to a process for the preparation of polyolefins by polymerizing olefins of the formula CH.sub.2 CHR in which R=H or C.sub.1 -C.sub.10 alkyl, on their own or as a mixture, if appropriate together with C.sub.4 -C.sub.12 .alpha.,.omega.-diolefins, in solvents, liquid |
