초록

PLA-containing materials, and building components containing such materials, include: polylactic acid (PLA); one or more inorganic pigments; and one or more stabilizers that includes one or more carbodiimide groups.

대표청구항 ▼

1. A PLA-containing building component comprising: polylactic acid (PLA);at least 3 wt-% TiO2 pigment, based on the total weight of the PLA-containing building component; andat least 0.5 wt-% of one or more stabilizers comprising one or more carbodiimide groups, based on the total weight of the PLA-

1. A PLA-containing building component comprising: polylactic acid (PLA);at least 3 wt-% TiO2 pigment, based on the total weight of the PLA-containing building component; andat least 0.5 wt-% of one or more stabilizers comprising one or more carbodiimide groups, based on the total weight of the PLA-containing building components;wherein the building component comprises a fenestration component or a portion thereof. 2. The PLA-containing building component of claim 1 wherein the polylactic acid is at least 90 wt-% L-polylactic acid (PLA), based on the total weight of the PLA. 3. The PLA-containing building component of claim 1 wherein the PLA, TiO2 pigment, and stabilizer are selected to provide a material that demonstrates no greater than 5ΔE Units (Hunter) of color change over a period of 1 year of South Florida exposure, or simulation of 1 year of South Florida exposure through accelerated weathering. 4. The PLA-containing building component of claim 3 wherein the PLA, TiO2 pigment, and stabilizer are selected to provide a material that demonstrates at least 30% gloss retention over a period of 1 year of South Florida exposure, or simulation of 1 year of South Florida exposure through accelerated weathering. 5. The PLA-containing building component of claim 3 wherein the PLA, TiO2 pigment, and stabilizer are selected to provide no less than a chalking rating of 8 or more over a period of 1 year of South Florida exposure, or simulation of 1 year of South Florida exposure through accelerated weathering. 6. The PLA-containing building component of claim 3 wherein the PLA, TiO2 pigment, and stabilizer are selected to provide a material that demonstrates no greater than 5ΔE Units (Hunter) of color change over a period of 5 years of South Florida exposure, or simulation of 5 years of South Florida exposure through accelerated weathering. 7. The PLA-containing building component of claim 6 wherein the PLA, TiO2 pigment, and stabilizer are selected to provide a material that demonstrates no greater than 5ΔE Units (Hunter) of color change, and at least 30% gloss retention, over a period of 5 years of South Florida exposure, or simulation of 5 years of South Florida exposure through accelerated weathering. 8. The PLA-containing building component of claim 7 wherein the PLA, TiO2 pigment, and stabilizer are selected to provide a material that demonstrates no greater than 5ΔE Units (Hunter) of color change, at least 30% gloss retention, and a chalking rating of 8 or more, over a period of 5 years of South Florida exposure, or simulation of 5 years of South Florida exposure through accelerated weathering. 9. The PLA-containing building component of claim 7 wherein the PLA, TiO2 pigment, and stabilizer are selected to provide a material that demonstrates no greater than 5ΔE Units (Hunter) of color change and at least 50% gloss retention, over a period of 10 years of South Florida exposure, or simulation of 10 years of South Florida exposure through accelerated weathering. 10. The PLA-containing building component of claim 1 wherein the amount of TiO2 pigment is no greater than 20 wt-%, based on the total weight of the PLA-containing building component. 11. The PLA-containing building component of claim 1 wherein the amount of the one or more stabilizers is no greater than 10 wt-%, based on the total weight of the PLA-containing building component. 12. The PLA-containing building component of claim 1 wherein the fenestration component comprises a window or door component or a capping material for a window or door component. 13. The PLA-containing building component of claim 1 which is in the form of a profile extrusion. 14. The PLA-containing building component of claim 1 which is in the form of a capping material. 15. The PLA-containing building component of claim 1 wherein the TiO2 pigment comprises an alumina-based coating. 16. The PLA-containing building component of claim 1 comprising at least 3.75 wt-% TiO2 pigment. 17. The PLA-containing building component of claim 1 comprising no greater than 12 wt-% TiO2 pigment. 18. The PLA-containing building component of claim 1 comprising at least 0.6 wt-% of one or more stabilizers comprising one or more carbodiimide groups. 19. The PLA-containing building component of claim 1 comprising no greater than 3.75 wt-% of one or more stabilizers comprising one or more carbodiimide groups. 20. A PLA-containing building component comprising: polylactic acid (PLA);3 wt-% to 12 wt-% TiO2 pigment, based on the total weight of the PLA-containing building component; and0.5 wt-% to 3.75 wt-% of one or more stabilizers comprising one or more carbodiimide groups, based on the total weight of the PLA-containing building component;wherein the building component comprises a fenestration component or a portion Thereof. 21. The PLA-containing building component of claim 20 wherein the PLA, TiO2 pigment, and stabilizer are selected to provide a material that demonstrates no greater than 5ΔE Units (Hunter) of color change over a period of 1 year of South Florida exposure, or simulation of 1 year of South Florida exposure through accelerated weathering. 22. The PLA-containing building component of claim 20 wherein the polylactic acid is at least 90 wt-% L-polylactic acid (PLA), based on the total weight of the PLA. 23. A PLA-containing fenestration component comprising: polylactic acid (PLA);3.75 wt-% to 12 wt-% TiO2 pigment, based on the total weight of the PLA-containing fenestration component; and0.6 wt-% to 3.75 wt-% of one or more stabilizers comprising one or more carbodiimide groups, based on the total weight of the PLA-containing fenestration component. 24. The PLA-containing fenestration component of claim 23 wherein the PLA, TiO2 pigment, and stabilizer are selected to provide a material that demonstrates no greater than 5ΔE Units (Hunter) of color change over a period of 1 year of South Florida exposure, or simulation of 1 year of South Florida exposure through accelerated weathering. 25. The PLA-containing fenestration component of claim 24 wherein the polylactic acid is at least 90 wt-% L-polylactic acid (PLA), based on the total weight of the PLA. 26. The PLA-containing fenestration of claim 24 having a heat distortion temperature (HDT) of no less than 80° C. 27. A building component comprising a PLA-containing material comprising: polylactic acid (PLA);TiO2 pigment; andone or more stabilizers comprising one or more carbodiimide groups;wherein the PLA-containing material includes an amount of TiO2 pigment and one or more stabilizers in an amount within the region RB shown in FIG. 3B;wherein the building component comprises a fenestration component or a portion thereof. 28. The building component of claim 1 wherein the PLA-containing component further comprises a filler. 29. The building component of claim 28 wherein the filler comprises wood fiber. 30. The building component of claim 20 wherein the PLA-containing component further comprises a filler. 31. The building component of claim 30 wherein the filler comprises wood fiber.