| US 7,384,999 B2 | ||
| Powdery pigment preparations for dyeing films | ||
| Robert Balent, Frankfurt am Main (Germany); Dietmar Beck, Bad Soden (Germany); and Heinfred Ohleier, Kelsterbach (Germany) | ||
| Assigned to Clariant Produkte (Deutschland) GmbH, Sulzbach (Germany) | ||
| Filed on Jun. 27, 2006, as Appl. No. 11/475,502. | ||
| Application 11/475502 is a division of application No. 10/466142, abandoned, previously published as PCT/EP02/00310, filed on Jan. 15, 2002. | ||
| Claims priority of application No. 101 02 019 (DE), filed on Jan. 18, 2001. | ||
| Prior Publication US 2006/0241231 A1, Oct. 26, 2006 | ||
| Int. Cl. C08K 3/18 (2006.01) | ||
| U.S. Cl. 524—431 [428/412; 524/81; 524/86; 524/87; 524/89; 524/90; 524/107; 524/432; 525/176; 525/193; 526/318.2] | 10 Claims |
| 1. A colored polymethyl methacrylate film comprising polymethyl methacrylate film colored by a pigment composition, wherein the pigment composition comprises a pigment in dispersion in an acrylate resin, wherein the acrylate resin has an average molar mass Mw of between 40 000 and 80 000 g/mol and is a copolymer of from 50 to 65 mol % ethyl methacrylate, from 30 to 45 mol % butyl methacrylate, and from 0.5 to 5 mol % methacrylic acid, wherein colored polymethyl methacrylate film has a thickness of between 5 to 1000 μm. |