US 12,146,052 B2
Polymer composition with mold release properties
Qamer Zia, Raunheim (DE); Kirsten Markgraf, Weinheim (DE); Dirk Zierer, Hattersheim (DE); and Patrick Nickolay, Villmar (DE)
Assigned to CELANESE INTERNATIONAL CORPORATION, Irving, TX (US)
Filed by Celanese International Corporation, Irving, TX (US)
Filed on Apr. 20, 2022, as Appl. No. 17/724,982.
Claims priority of provisional application 63/319,531, filed on Mar. 14, 2022.
Claims priority of provisional application 63/208,250, filed on Jun. 8, 2021.
Claims priority of provisional application 63/177,210, filed on Apr. 20, 2021.
Prior Publication US 2022/0332941 A1, Oct. 20, 2022
Int. Cl. C08L 67/02 (2006.01); A61M 5/31 (2006.01); C08K 3/34 (2006.01); C08K 7/14 (2006.01); C08L 23/06 (2006.01); C08L 23/08 (2006.01); C08L 83/04 (2006.01); C08L 91/06 (2006.01)
CPC C08L 67/02 (2013.01) [A61M 5/31 (2013.01); C08K 3/34 (2013.01); C08K 7/14 (2013.01); C08L 23/06 (2013.01); C08L 23/0869 (2013.01); C08L 83/04 (2013.01); C08L 91/06 (2013.01); C08L 2205/025 (2013.01); C08L 2205/035 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A polymer composition comprising:
a thermoplastic polymer;
at least one of a tribological modifier or a nucleant;
reinforcing fibers present in the polymer composition in an amount from 5% to about 55% by weight; and
at least a first mold release agent and a second mold release agent, wherein the first mold release agent comprises a polar mold release agent comprising a polar wax, wherein the second mold release agent comprises a non-polar mold release agent comprising a non-polar polymer, and wherein the thermoplastic polymer is selected from a polyester polymer, a polyether ether ketone polymer, a polyphenylene sulfide polymer, or a polyacetal polymer.