Pla-containing material

Abstract

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.

What is claimed is: 
     
         1 . A PLA-containing building component comprising:
 polylactic acid (PLA);   one or more inorganic pigments; and   one or more stabilizers;   wherein the building component 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.   
     
     
         2 . The PLA-containing building component of  claim 1 , comprising a profile extrusion. 
     
     
         3 . The PLA-containing building component of  claim 1 , wherein the building component demonstrates no greater than 5ΔE Units (Hunter) of color change over a period of 10 year of South Florida exposure, or simulation of 10 year of South Florida exposure through accelerated weathering. 
     
     
         4 . The PLA-containing building component of  claim 1 , the PLA comprising a number average molecular weight (Mn) from 50,000 to 111.000 Daltons, and a polydispersity index (PDI) of 1.9 to 2. 
     
     
         5 . The PLA-containing building component of  claim 1 , the PLA comprising homopolymeric PLA. 
     
     
         6 . The PLA-containing building component of  claim 1 , wherein the PLA is at least 90% PLA-L, based on the total weight of PLA. 
     
     
         7 . The PLA-containing building component of  claim 1 , wherein the PLA is at least 50 percent by weight of the building component. 
     
     
         8 . The PLA-containing building component of  claim 1 , wherein the PLA is at least 75 percent by weight of the building component. 
     
     
         9 . The PLA-containing building component of  claim 1 , wherein the PLA is at least 90 percent by weight of the building component. 
     
     
         10 . The PLA-containing building component of  claim 1 , the inorganic pigment selected from the group consisting of metal oxides, metal sulfides, and metal salts 
     
     
         11 . The PLA-containing building component of  claim 1 , the inorganic pigment selected from the group consisting of titanium dioxide, zinc oxide, zinc sulfide, and antimony oxide. 
     
     
         12 . The PLA-containing building component of  claim 1 , wherein the building component exhibits a heat distortion temperature (HDT) of no less than 80° C. 
     
     
         13 . The PLA-containing building component of  claim 1 , further comprising a nucleating agent. 
     
     
         14 . The PLA-containing building component of  claim 1 , further comprising a filler. 
     
     
         15 . The PLA-containing building component of  claim 14 , the filler comprising wood fiber. 
     
     
         16 . The PLA-containing building component of  claim 1 , further comprising inorganic particulate materials selected from the group consisting of metal oxide particles or spheres, glass particles, and glass fibers. 
     
     
         17 . The PLA-containing building component of  claim 1 , the building component selected from the group consisting of components for windows and doors, railings, decking, siding, flooring, fencing, and trim. 
     
     
         18 . The PLA-containing building component of  claim 1 , the stabilizer comprising one or more carbodiimide groups. 
     
     
         19 . The PLA-containing building component of  claim 1 , comprising at least 1 wt-% of one or more inorganic pigments. 
     
     
         20 . The PLA-containing building component of  claim 1 , comprising at least 0.1 wt-% of one or more stabilizers comprising one or more carbodiimide group.