| 摘要 |
Polycarbonate-containing compositions having desirable properties, such as good resistance to environmental stress cracking, are achieved using a combination of a polycarbonate polymer, a compatibilizing agent and an olefinic elastomer. The polycarbonate-containing composition may include about 40-98 weight percent of one or more carbonates polymers; about 0.1-10 weight percent of one or more compatibilizing agents; and 0.1-10 weight percent of one or more olefmic elastomers. The polycarbonate-containing compositions (e.g., polycarbonate blend compositions) preferably have good chemical resistance to medium chain triglycerides. The compositions may be employed in components, such as housings, that require resistance to cleaning fluids used in hospitals. For example, the composition may be employed in components that require resistance to hospital grade tuberculosis disinfectants. |
| 主权项 |
1. A composition comprising a blend of a plurality of polymers including:
a. from about 40 weight percent to about 98 weight percent of one or more carbonates polymers; b. from about 0.1 weight percent to about 10 weight percent of one or more compatibilizing agent including one or more olefins; and c. from about 0.1 weight percent to about 10 weight percent of one or more olefinic elastomers, wherein the olefinic elastomer is a copolymer including two or more α-olefins and has a crystallinity of less than 30 percent; wherein the total concentration of the α-olefins of the olefinic elastomer is from 95 weight percent to 100 weight percent based on the total weight of the olefinic elastomer; and wherein the compatibilizing agent is selected from the group consisting of a copolymer including or consisting essentially of an acrylate monomer and one or more α-olefins, a copolymer including or consisting essentially of acrylic acid monomer and one or more α-olefins, an oxazoline functional olefin, a copolymer including or consisting essentially of one or more alkylacrylic acid monomers and one or more α-olefins, a copolymer or terpolymer including or consisting essentially of glycidiyl methacrylate and an α-olefin, a copolymer including maleic anhydride and one or more α-olefins, and a graft polymer having a backbone including, consisting essentially of, or consisting entirely of one or more α-olefins and a functional graft; wherein the functional graft is a maleic anhydride, an acrylate, an acrylic acid, an oxazoline, or a glycidyl methacrylate, or a combination thereof; wherein the total concentration of the olefins in the compatibilizing agent is from about 10 weight percent to less than 95 weight percent based on the total weight of the compatibilizing agent; and wherein the total concentration of the carbonate polymer, the ccompatibizing agent, the olefinic elastomer, any polyester, any silicone elastomer, and any additives is more than 95 weight percent, based on the total weight of the composition. |
