Aromatic Polyamide Composition and Article Manufactured Therefrom
AssigneeSolvay Advanced Polymers, L.L.C.
InventorsChristie W. Crowe, Masahiko Saito
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Abstract
Polymer composition comprising—an aromatic polyamide, —more than 5 wt. % (based on the total weight of the composition) of at least one crystalline silicate chosen from nesosilicates, sorosilicates, cyclosilicates, tectosilicates and inosilicates, —more than 2 wt. % (based on the total weight of the composition) of at least one white pigment, and/or more than 0.003 wt. % (based on the total weight of the composition) of at least one optical brightener, and —more than 1 wt. % (based on the total weight of the composition) of at least one optionally functionalized olefin copolymer. Article comprising said polymer composition. 5 figures.
Claims34
1-62. (canceled)
A polymer composition comprising:
- (a) an aromatic polyamide;
- (b) more than 5 wt. % (based on the total weight of the composition) of at least one crystalline silicate chosen from nesosilicates, sorosilicates, cyclosilicates, tectosilicates and inosilicates;
- (c) more than 4 wt. % (based on the total weight of the composition) of at least one white pigment;
- and
- (d) more than 1 wt. % (based on the total weight of the composition) of at least one optionally functionalized olefin copolymer.
A polymer composition comprising:
- (a) an aromatic polyamide;
- (b) more than 5 wt. % (based on the total weight of the composition) of at least one crystalline silicate chosen from nesosilicates, sorosilicates, cyclosilicates, tectosilicates and inosilicates;
- (c) more than 0.003 wt. % (based on the total weight of the composition) of at least one optical brightener;
- and
- (d) ore than 1 wt. % (based on the total weight of the composition) of at least one optionally functionalized olefin copolymer.
A method for improving the UV resistance of a polymer composition in the need thereof, the polymer composition comprising an aromatic polyamide, the method comprising adding at least one optionally functionalized olefin copolymer to the polymer composition.
A polymer composition comprising:
- (a) an aromatic polyamide;
- (b) more than 5 wt. % (based on the total weight of the composition) of at least one crystalline silicate chosen from nesosilicates, sorosilicates, cyclosilicates, tectosilicates and inosilicates;
- and
- (c) more than 2 wt. % (based on the total weight of the composition) of at least one white pigment,
- which, if concurrently exposed to heat and UV rays at 150° C. for 5 hours, using a Blue M oven of model ESP-400C-5 and a UVASPOT 400/T UV cure unit, equipped with a metal halide F-lamp as UV source, with a UV source-composition distance of 14 cm and absent any filter, has a total reflectance in the visible light spectrum RT of above 55%, wherein RT is calculated by number-averaging the reflectances Rλ in the visible light spectrum, said reflectances Rλ being measured at an incidence angle of 8° using a BYK Gardner Color-Sphere spectrophotometer, a D65 standard illuminant and a 10° observer.
A polymer composition comprising:
- (a) an aromatic polyamide;
- (b) more than 5 wt. % (based on the total weight of the composition) of at least one crystalline silicate chosen from nesosilicates, sorosilicates, cyclosilicates, tectosilicates and inosilicates;
- and
- (c) more than 2 wt. % (based on the total weight of the composition) of at least one white pigment,
- which, if concurrently exposed to heat and UV rays at 150° C. for 5 hours, using a Blue M oven of model ESP-400C-5 and a UVASPOT 400/T UV cure unit, equipped with a metal halide F-lamp as UV source, with a UV source-composition distance of 14 cm and absent any filter, has a reflectance in the 420-520 nm wavelength region R420-520 of above 40%, wherein R420-520 is calculated by number-averaging the reflectances Rλ in the 420-520 nm wavelength region, said reflectances Rλ being measured at an incidence angle of 8° using a BYK Gardner Color-Sphere spectrophotometer, a D65 standard illuminant and a 10° observer.
Dependencies are inferred from the claim text.