| US 7,547,749 B2 | ||
| Triazine compounds, polymers comprising triazine structural units, and method | ||
| Sterling Bruce Brown, Austin, Tex. (US); Hans-Peter Brack, Herrliberg (Switzerland); James Anthony Cella, Clifton Park, N.Y. (US); and Dennis Karlik, Noord Brabant (Netherlands) | ||
| Assigned to SABIC Innovative Platics IP B.V., Bergen op Zoom (Netherlands) | ||
| Filed on Jun. 21, 2007, as Appl. No. 11/766,122. | ||
| Application 11/766122 is a division of application No. 10/672789, filed on Sep. 26, 2003, granted, now 7,235,611. | ||
| Application 10/672789 is a continuation of application No. 09/941050, filed on Aug. 28, 2001, abandoned. | ||
| Prior Publication US 2008/0097040 A1, Apr. 24, 2008 | ||
| Int. Cl. C08G 64/42 (2006.01); C08G 64/00 (2006.01); C08G 65/48 (2006.01); C08G 65/44 (2006.01) | ||
| U.S. Cl. 525—391 [525/390; 525/392; 525/396; 525/467; 525/468] | 9 Claims |
1. A process for capping nucleophilic groups in a polycarbonate which comprises combining and reacting the polymer with a
triazine-comprising capping agent of formula (I):
 wherein L1 is an aryloxy group comprising at least one electron withdrawing group ortho, meta, or para to the linkage between the aryloxy
group and the triazine ring, and Z1 and Z2 are each independently groups which are essentially inert to reaction with a nucleophilic group on a polymer or monomer, or
which react with a nucleophilic group on a polymer or monomer at a slower rate than the group, L1, and
wherein the resulting capped polycarbonate does not comprise a triazine-containing moiety as a structural unit in the polymer
chain other than at a terminal site.
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