US 12,227,640 B2
Polyester polymer compositions
Toshio Hatayama, Tokyo (JP)
Assigned to SOLVAY SPECIALTY POLYMERS USA, LLC, Alpharetta, GA (US)
Appl. No. 16/621,353
Filed by SOLVAY SPECIALTY POLYMERS USA, LLC, Alpharetta, GA (US)
PCT Filed Jun. 12, 2018, PCT No. PCT/EP2018/065527
§ 371(c)(1), (2) Date Dec. 11, 2019,
PCT Pub. No. WO2018/229062, PCT Pub. Date Dec. 20, 2018.
Claims priority of provisional application 62/518,875, filed on Jun. 13, 2017.
Prior Publication US 2021/0139694 A1, May 13, 2021
Int. Cl. C08L 67/02 (2006.01); C08G 63/183 (2006.01); C08K 3/22 (2006.01); C08K 3/30 (2006.01); C08K 3/32 (2006.01); C08K 5/00 (2006.01); C08K 7/14 (2006.01)
CPC C08L 67/02 (2013.01) [C08G 63/183 (2013.01); C08K 3/22 (2013.01); C08K 3/30 (2013.01); C08K 3/32 (2013.01); C08K 5/005 (2013.01); C08K 7/14 (2013.01); C08K 2003/2241 (2013.01); C08K 2003/2296 (2013.01); C08K 2003/3036 (2013.01); C08K 2003/3045 (2013.01); C08K 2003/325 (2013.01); C08L 2203/20 (2013.01)] 12 Claims
 
1. An LED housing comprising a polyester polymer composition, the polyester polymer composition comprising:
a polyester polymer comprising, relative to the total number of recurring units in the polyester polymer, at least 50 mol % of a recurring unit (RPE), which contains an ester group (C(═O)—O) and is represented by the following formula:

OG Complex Work Unit Chemistry
wherein
Cy is a bond or is represented by the following formula

OG Complex Work Unit Chemistry
n is an integer from 1 to 12,
m is an integer from 1 to 12; and
“†” indicates a bond to the —(CH2)n— group and “*” indicates a bond to —O—;
from 1 wt. % to 50 wt. % of a white pigment selected from the group consisting of TiO2, ZnS2, ZnO, and BaSO4;
from at least 1 wt. % to 12 wt. % hydroxyapatite;
from 0.05 to 3 wt % of one or more stabilizers in addition to the hydroxyapatite, selected from the group consisting of light stabilizers, antioxidant stabilizers, and mixtures thereof; and
optionally, one or more additives selected from the group consisting of reinforcing fillers, lubricants, processing aids, plasticizers, flow modifiers, flame retardants, anti-static agents, extenders, metal deactivators and mixtures thereof,
wherein
the polyester polymer composition is substantially free of non-calcium phosphate salts, the expression “substantially free of non-calcium phosphate salts” meaning that the concentration of non-calcium phosphate salts is less than 0.01 wt %; and
wt. % is relative to the total weight of the polyester polymer composition.